6 Commits
Author SHA1 Message Date
qpismont 589d337057 Merge pull request '1.2: Sandboxing' (#7) from 1.2 into main
ci/woodpecker/push/tests Pipeline was successful
ci/woodpecker/tag/release Pipeline was successful
Reviewed-on: #7
2026-09-20 16:58:36 +02:00
qpismont fa03fd8589 add review type (perf, bug, security, ...) + fix tests
ci/woodpecker/push/tests Pipeline was successful
2026-09-20 14:42:14 +00:00
qpismont be7284c6d8 Fix file_size test
ci/woodpecker/push/tests Pipeline failed
2026-09-20 13:21:52 +00:00
qpismont 48e09aa373 Fix missing workspace when herald run in container
ci/woodpecker/push/tests Pipeline failed
2026-09-20 13:10:05 +00:00
qpismont 620ec6727e clean devcontainer-rs architecture
ci/woodpecker/push/tests Pipeline was successful
2026-09-17 20:37:54 +00:00
qpismont 624bc1e028 replace ContainerRuntime CLI to Bollard crate (default: docker socket)
ci/woodpecker/push/tests Pipeline was successful
limit tool result to open router tool response (with truncated info for
ai)

Hard kill if graceful shutdown is too long
2026-09-17 19:51:59 +00:00
28 changed files with 2593 additions and 1126 deletions
+1 -1
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@@ -20,5 +20,5 @@ RUST_BACKTRACE=1
METRICS_BIND_ADDR=
# Sandboxed tool execution
CONTAINER_RUNTIME=docker
# DOCKER_HOST=
SANDBOX_MAX_ITERATIONS=8
Generated
+133 -3
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@@ -295,6 +295,49 @@ dependencies = [
"objc2",
]
[[package]]
name = "bollard"
version = "0.21.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dbe8358268799ebb3e4df23cb9d47f4c72bbc4f5247e2fa6a1bf7b6c0baea220"
dependencies = [
"base64 0.22.1",
"bollard-stubs",
"bytes",
"futures-core",
"futures-util",
"hex",
"http 1.5.0",
"http-body-util",
"hyper",
"hyper-named-pipe",
"hyper-util",
"hyperlocal",
"log",
"pin-project-lite",
"serde",
"serde_derive",
"serde_json",
"serde_urlencoded",
"thiserror",
"tokio",
"tokio-util",
"tower-service",
"url",
"winapi",
]
[[package]]
name = "bollard-stubs"
version = "1.53.1-rc.29.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce412eb6f7096743011dc3cb5c674caeb24ced61d8c498fe07cf7998a4fea889"
dependencies = [
"serde",
"serde_json",
"serde_repr",
]
[[package]]
name = "bumpalo"
version = "3.20.3"
@@ -432,11 +475,16 @@ name = "devcontainer-rs"
version = "0.1.0"
dependencies = [
"anyhow",
"bollard",
"bytes",
"futures-util",
"serde",
"serde_json",
"tar",
"tempfile",
"thiserror",
"tokio",
"tokio-stream",
]
[[package]]
@@ -488,7 +536,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
dependencies = [
"libc",
"windows-sys 0.52.0",
"windows-sys 0.61.2",
]
[[package]]
@@ -508,6 +556,16 @@ version = "2.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223"
[[package]]
name = "filetime"
version = "0.2.29"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5c287a33c7f0a620c38e641e7f60827713987b3c0f26e8ddc9462cc69cf75759"
dependencies = [
"cfg-if",
"libc",
]
[[package]]
name = "find-msvc-tools"
version = "0.1.11"
@@ -830,6 +888,20 @@ dependencies = [
"want",
]
[[package]]
name = "hyper-named-pipe"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fab3637d6b04a8037af8a266fdf6cf92ea957e8c53981a2bf6136572531025bf"
dependencies = [
"hex",
"hyper",
"hyper-util",
"pin-project-lite",
"tokio",
"tower-service",
]
[[package]]
name = "hyper-tls"
version = "0.6.0"
@@ -869,6 +941,21 @@ dependencies = [
"tracing",
]
[[package]]
name = "hyperlocal"
version = "0.9.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "986c5ce3b994526b3cd75578e62554abd09f0899d6206de48b3e96ab34ccc8c7"
dependencies = [
"hex",
"http-body-util",
"hyper",
"hyper-util",
"pin-project-lite",
"tokio",
"tower-service",
]
[[package]]
name = "icu_collections"
version = "2.3.0"
@@ -1777,7 +1864,7 @@ dependencies = [
"errno",
"libc",
"linux-raw-sys",
"windows-sys 0.52.0",
"windows-sys 0.61.2",
]
[[package]]
@@ -2066,6 +2153,17 @@ dependencies = [
"serde_core",
]
[[package]]
name = "serde_repr"
version = "0.1.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d3b1629de253c70a0508c3899572da79ca359fdab27c7920ff00406df418906"
dependencies = [
"proc-macro2",
"quote",
"syn 3.0.4",
]
[[package]]
name = "serde_urlencoded"
version = "0.7.1"
@@ -2179,6 +2277,17 @@ dependencies = [
"syn 2.0.119",
]
[[package]]
name = "tar"
version = "0.4.46"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f6221d9a6003c78398e3b239969f352578258df48c8eb051caadae0015bc840"
dependencies = [
"filetime",
"libc",
"xattr",
]
[[package]]
name = "tempfile"
version = "3.27.0"
@@ -2189,7 +2298,7 @@ dependencies = [
"getrandom 0.3.4",
"once_cell",
"rustix",
"windows-sys 0.52.0",
"windows-sys 0.61.2",
]
[[package]]
@@ -2299,6 +2408,17 @@ dependencies = [
"tokio",
]
[[package]]
name = "tokio-stream"
version = "0.1.19"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a3d06f0b082ba57c26b79407372e57cf2a1e28124f78e9479fe80322cf53420b"
dependencies = [
"futures-core",
"pin-project-lite",
"tokio",
]
[[package]]
name = "tokio-util"
version = "0.7.19"
@@ -2796,6 +2916,16 @@ version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3ad82d2a33cdc9674dc7465672f271e096168fcdbe0f799d9e6db8c5892679dc"
[[package]]
name = "xattr"
version = "1.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "32e45ad4206f6d2479085147f02bc2ef834ac85886624a23575ae137c8aa8156"
dependencies = [
"libc",
"rustix",
]
[[package]]
name = "yoke"
version = "0.8.3"
+2
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@@ -8,6 +8,7 @@ resolver = "3"
[workspace.dependencies]
reqwest = { version = "0.13", default-features = false, features = ["json", "native-tls", "stream"] }
tokio = { version = "1.53", features = ["full"] }
tokio-stream = "0.1"
tokio-util = "0.7"
futures-util = "0.3"
serde_json = "1.0"
@@ -24,6 +25,7 @@ anyhow = { version = "1", features = ["backtrace"] }
thiserror = "2.0"
ring = "0.17"
hex = "0.4"
bytes = "1.1"
metrics = "0.24"
metrics-exporter-prometheus = { version = "0.18", default-features = false, features = ["http-listener"] }
+19 -3
View File
@@ -1,4 +1,4 @@
FROM rust:1.97-trixie as builder
FROM rust:1.98-trixie as builder
WORKDIR /app
@@ -10,6 +10,22 @@ RUN cargo build --release --package herald-server
FROM debian:trixie-slim
# git clones the pull request. ca-certificates is what every HTTPS call needs
# (Gitea, OpenRouter, git). The shared libraries are the non-base ones the binary
# links against, as reported by `ldd target/release/herald-server`; libc, libm
# and libgcc_s come from the base image.
RUN apt-get update && apt-get install -y --no-install-recommends \
ca-certificates \
git \
libssl3t64 \
libzstd1 \
zlib1g \
&& rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY --from=builder /app/target/release/herald-server .
CMD [ "./herald-server" ]
COPY --from=builder /app/target/release/herald-server ./herald-server
# Exec form, so the binary is PID 1 and receives the SIGTERM it handles to shut
# down gracefully.
CMD ["./herald-server"]
+35 -6
View File
@@ -37,8 +37,8 @@ Herald reads its configuration from environment variables (a `.env` file is supp
| `METRICS_BIND_ADDR` | *(optional)* Bind address for the Prometheus metrics endpoint (e.g. `0.0.0.0:9100`). If unset, the metrics exporter is disabled. |
| `SENTRY_DSN` | *(optional)* Sentry DSN for error tracking |
| `RUST_LOG` | *(optional)* Log level, defaults to `info` |
| `CONTAINER_RUNTIME` | *(optional)* Container runtime binary used for the sandbox (`docker` or `podman`). Defaults to `docker` |
| `SANDBOX_MAX_ITERATIONS` | *(optional)* Maximum number of tool-calling iterations per sandboxed review. Defaults to `8` |
| `DOCKER_HOST` | *(optional)* Container daemon socket Herald drives, e.g. `unix:///run/user/1000/podman/podman.sock` for a rootless podman. Defaults to `unix:///var/run/docker.sock` |
## Sandboxed reviews
@@ -51,13 +51,42 @@ Herald reviews pull requests inside an ephemeral
`GITEA_TOKEN` (so private repositories work), tells the model which files and
lines changed — additions and deletions, with the line numbers of the new and
old versions of the file respectively — then lets it explore the repository
with read-only tools (`ls`, `read_file`, `grep`, `find`) run inside the
container: the code itself is not sent, so the model reads it at those lines,
with read-only tools (`ls`, `file_size`, `read_file`, `grep`, `find`) run inside
the container: the code itself is not sent, so the model reads it at those lines,
4. posts the review, anchoring each comment on the added or removed line it
refers to, and removes the container and the temporary clone.
The container runtime is selected with `CONTAINER_RUNTIME` (`docker` or
`podman`). The repository must contain a `.devcontainer/devcontainer.json`.
Generated files are left out of the changes handed to the model: lockfiles
(`Cargo.lock`, `package-lock.json`, `yarn.lock`, `go.sum`…) are machine-written
dependency churn whose thousands of lines would drown the code under review, and
they are never a place where a comment belongs.
Each comment is tagged with a severity — `bug`, `security`, `performance` or
`maintainability` — shown at the start of the comment, and the summary also lists
what the pull request does well.
Herald drives the container daemon through its socket: `DOCKER_HOST` (default
`unix:///var/run/docker.sock`), which covers both docker and podman's
Docker-compatible socket. The repository must contain a
`.devcontainer/devcontainer.json`.
Herald can therefore run inside a container with only that socket mounted (no
shared workspace directory is required): the clone is streamed to the daemon over
the socket, like the build context, instead of being bind-mounted from a host
path the daemon would have to see. This is the setup the `Containerfile`
produces, e.g.:
```sh
podman run --env-file=.env -p 3001:3001 \
-v /run/user/$(id -u)/podman/podman.sock:/var/run/docker.sock \
herald:latest
```
The `runArgs` of that file are read but deliberately **not** passed to the daemon:
they come from an untrusted pull request, and one of them (`--network host`) would
attach the container to another network and quietly
defeat the network cut described below. A devcontainer that relies on them
(`--gpus all`, `--cap-add`, `--shm-size`…) will not get them.
Each sandbox is isolated: it gets its own image tag, container and network. The
container starts with network access so the `postCreateCommand` /
@@ -70,7 +99,7 @@ network and image are removed when the review ends (including on failure).
The easiest way to get started is with the provided [Dev Container](https://containers.dev/) (VS Code or Zed with the dev container extension).
Open the project and reopen it in the container — the Rust toolchain is pre-installed.
Open the project and reopen it in the container — the Rust toolchain is pre-installed, along with rootless podman, so sandboxed reviews can be exercised locally: start its API socket with `podman system service --time=0 &` and set `DOCKER_HOST=unix:///run/user/$(id -u)/podman/podman.sock`.
**Without Dev Container**, you just need a Rust toolchain:
+5
View File
@@ -4,7 +4,12 @@ version = "0.1.0"
edition = "2024"
[dependencies]
bollard = "0.21"
bytes = { workspace = true }
futures-util = { workspace = true }
tar = "0.4"
tokio = { workspace = true }
tokio-stream = { workspace = true }
serde = { workspace = true }
serde_json = { workspace = true }
anyhow = { workspace = true }
+24
View File
@@ -0,0 +1,24 @@
//! Constantes de la crate : endpoint du daemon, timeouts et découpage du
//! contexte de build.
use std::time::Duration;
/// Endpoint affiché dans les logs quand `DOCKER_HOST` n'est pas défini.
pub(crate) const DEFAULT_ENDPOINT: &str = "unix:///var/run/docker.sock";
/// Timeout appliqué aux opérations de build/run/stop/remove.
pub(crate) const DEFAULT_COMMAND_TIMEOUT: Duration = Duration::from_secs(600);
/// Timeout appliqué aux commandes exécutées dans un container en cours d'exécution.
pub(crate) const DEFAULT_EXEC_TIMEOUT: Duration = Duration::from_secs(60);
/// Taille des morceaux du contexte de build envoyés au daemon.
pub(crate) const CONTEXT_CHUNK_SIZE: usize = 64 * 1024;
/// Nombre de morceaux pouvant attendre dans le canal : c'est ce qui borne la
/// mémoire occupée par le contexte, quelle que soit sa taille.
pub(crate) const CONTEXT_CHUNKS: usize = 4;
/// Lectures successives du code de sortie d'un exec, et attente entre elles.
pub(crate) const EXIT_CODE_ATTEMPTS: usize = 10;
pub(crate) const EXIT_CODE_DELAY: Duration = Duration::from_millis(20);
+33 -589
View File
@@ -1,179 +1,12 @@
//! Primitives de cycle de vie de container pour un [`DevContainer`] analysé.
//!
//! Ce module invoque un runtime de containers (`docker` ou `podman`) pour construire
//! l'image devcontainer, démarrer un container avec le workspace monté, exécuter les
//! hooks `postCreateCommand` / `postStartCommand` et lancer des commandes à l'intérieur
//! du container en cours d'exécution.
//!
//! Il est volontairement agnostique du runtime : tout binaire exposant l'interface
//! CLI `docker` (y compris `podman`) peut être utilisé via [`ContainerRuntime::new`].
//!
//! # Isolation
//!
//! Chaque sandbox dispose de son propre tag d'image, de son propre container et de
//! son propre réseau. Le container démarre attaché à ce réseau afin que les hooks
//! `postCreateCommand` / `postStartCommand` puissent récupérer des dépendances
//! (par ex. `npm install`) ; une fois les hooks exécutés, le container est déconnecté
//! du réseau pour le reste de sa durée de vie. Chaque commande est bornée par un timeout.
//! Un devcontainer en cours d'exécution : inspection et exécution de commandes.
use std::{
path::{Path, PathBuf},
process::Stdio,
time::{Duration, SystemTime, UNIX_EPOCH},
use std::time::Duration;
use crate::{
consts::DEFAULT_EXEC_TIMEOUT, errors::ContainerError, exec::ExecOutput,
runtime::ContainerRuntime,
};
use tokio::process::Command;
use crate::DevContainer;
/// Timeout appliqué aux opérations de build/run/stop/remove.
const DEFAULT_COMMAND_TIMEOUT: Duration = Duration::from_secs(600);
/// Timeout appliqué aux commandes exécutées dans un container en cours d'exécution.
const DEFAULT_EXEC_TIMEOUT: Duration = Duration::from_secs(60);
/// Résultat d'une commande exécutée dans un container.
#[derive(Debug, Clone)]
pub struct ExecOutput {
/// Code de sortie, ou `-1` si le processus a été terminé par un signal.
pub status: i32,
pub stdout: String,
pub stderr: String,
}
impl ExecOutput {
pub fn success(&self) -> bool {
self.status == 0
}
/// Transforme un code de sortie non nul en [`ContainerError::Command`].
pub fn ensure_success(self, program: &str, args: &[String]) -> Result<Self, ContainerError> {
if self.success() {
return Ok(self);
}
Err(ContainerError::Command {
program: program.to_string(),
args: args.join(" "),
status: self.status,
stderr: self.stderr.trim().to_string(),
})
}
}
#[derive(Debug, thiserror::Error)]
pub enum ContainerError {
#[error("failed to run `{program}`: {source}")]
Spawn {
program: String,
source: std::io::Error,
},
#[error("`{program} {args}` failed with status {status}: {stderr}")]
Command {
program: String,
args: String,
status: i32,
stderr: String,
},
#[error("`{program} {args}` timed out after {timeout:?}")]
Timeout {
program: String,
args: String,
timeout: Duration,
},
}
/// Un binaire de runtime de containers exposant l'interface CLI `docker`.
#[derive(Debug, Clone)]
pub struct ContainerRuntime {
program: String,
timeout: Duration,
}
impl ContainerRuntime {
pub fn new(program: impl Into<String>) -> Self {
Self {
program: program.into(),
timeout: DEFAULT_COMMAND_TIMEOUT,
}
}
pub fn docker() -> Self {
Self::new("docker")
}
pub fn podman() -> Self {
Self::new("podman")
}
/// Remplace le timeout appliqué aux opérations de build/run/stop/remove.
pub fn with_timeout(mut self, timeout: Duration) -> Self {
self.timeout = timeout;
self
}
pub fn program(&self) -> &str {
&self.program
}
pub fn timeout(&self) -> Duration {
self.timeout
}
/// Vérifie que le binaire du runtime est présent et répond.
pub async fn available(&self) -> bool {
Command::new(&self.program)
.arg("version")
.stdin(Stdio::null())
.stdout(Stdio::null())
.stderr(Stdio::null())
.status()
.await
.map(|status| status.success())
.unwrap_or(false)
}
/// Exécute le runtime avec les arguments donnés, en capturant stdout/stderr.
///
/// Seuls les échecs de lancement (spawn) et les timeouts sont des erreurs ; un
/// code non nul est renvoyé dans [`ExecOutput`] afin que les appelants réagissent.
pub async fn run(&self, args: &[String]) -> Result<ExecOutput, ContainerError> {
self.run_with_timeout(args, self.timeout).await
}
/// Comme [`run`](Self::run), mais avec un timeout explicite.
pub async fn run_with_timeout(
&self,
args: &[String],
timeout: Duration,
) -> Result<ExecOutput, ContainerError> {
let output = Command::new(&self.program)
.args(args)
.stdin(Stdio::null())
.kill_on_drop(true)
.output();
match tokio::time::timeout(timeout, output).await {
Ok(Ok(output)) => Ok(ExecOutput {
status: output.status.code().unwrap_or(-1),
stdout: String::from_utf8_lossy(&output.stdout).into_owned(),
stderr: String::from_utf8_lossy(&output.stderr).into_owned(),
}),
Ok(Err(source)) => Err(ContainerError::Spawn {
program: self.program.clone(),
source,
}),
Err(_) => Err(ContainerError::Timeout {
program: self.program.clone(),
args: args.join(" "),
timeout,
}),
}
}
}
/// Un devcontainer en cours d'exécution.
#[derive(Debug, Clone)]
pub struct Container {
@@ -186,6 +19,25 @@ pub struct Container {
}
impl Container {
/// Assemble un container démarré, avec son réseau et son image à nettoyer.
pub(crate) fn new(
runtime: ContainerRuntime,
name: String,
workspace_folder: String,
remote_user: Option<String>,
network: Option<String>,
image: Option<String>,
) -> Self {
Self {
runtime,
name,
workspace_folder,
remote_user,
network,
image,
}
}
pub fn name(&self) -> &str {
&self.name
}
@@ -202,22 +54,14 @@ impl Container {
self.exec_with_timeout(cmd, DEFAULT_EXEC_TIMEOUT).await
}
async fn exec_with_timeout(
pub(crate) async fn exec_with_timeout(
&self,
cmd: &[&str],
timeout: Duration,
) -> Result<ExecOutput, ContainerError> {
let mut args = vec!["exec".to_string()];
if let Some(user) = &self.remote_user {
args.push("--user".to_string());
args.push(user.clone());
}
args.push(self.name.clone());
args.extend(cmd.iter().map(|arg| arg.to_string()));
self.runtime.run_with_timeout(&args, timeout).await
self.runtime
.exec(&self.name, cmd, self.remote_user.as_deref(), timeout)
.await
}
/// Exécute un script shell dans le container via `sh -c`.
@@ -227,423 +71,23 @@ impl Container {
/// Arrête le container.
pub async fn stop(&self) -> Result<(), ContainerError> {
let args = vec!["stop".to_string(), self.name.clone()];
self.runtime
.run(&args)
.await?
.ensure_success(self.runtime.program(), &args)?;
Ok(())
self.runtime.stop_container(&self.name).await
}
/// Supprime le container, son réseau et son image.
///
/// La suppression du réseau et de l'image est best-effort : ils peuvent déjà être absents.
pub async fn remove(&self) -> Result<(), ContainerError> {
let args = vec![
"rm".to_string(),
"-f".to_string(),
"-v".to_string(),
self.name.clone(),
];
self.runtime
.run(&args)
.await?
.ensure_success(self.runtime.program(), &args)?;
self.runtime.remove_container(&self.name).await?;
if let Some(network) = &self.network {
let args = vec!["network".to_string(), "rm".to_string(), network.clone()];
let _ = self.runtime.run(&args).await;
let _ = self.runtime.remove_network(network).await;
}
if let Some(image) = &self.image {
let args = vec!["rmi".to_string(), image.clone()];
let _ = self.runtime.run(&args).await;
let _ = self.runtime.remove_image(image).await;
}
Ok(())
}
}
impl DevContainer {
/// Nom de l'image de base dérivé du nom du devcontainer.
pub fn image_name(&self) -> String {
let base = self.name.as_deref().unwrap_or("devcontainer");
format!("devcontainer-rs/{}", sanitize(base))
}
/// Tag d'image unique pour une exécution de sandbox donnée.
///
/// L'unicité est importante : deux sandboxes concurrentes (éventuellement pour des
/// dépôts différents partageant un nom de devcontainer) ne doivent pas se disputer le même tag.
pub fn image_tag(&self) -> String {
format!("{}:{}", self.image_name(), unique_suffix())
}
/// Arguments passés à `docker build` (tout ce qui suit le verbe `build`).
pub fn build_args(&self, image_tag: &str) -> Vec<String> {
let context = self
.container_file_path
.parent()
.unwrap_or_else(|| Path::new("."));
let mut args = vec![
"-f".to_string(),
self.container_file_path.display().to_string(),
"-t".to_string(),
image_tag.to_string(),
];
for (key, value) in &self.build_args {
args.push("--build-arg".to_string());
args.push(format!("{key}={value}"));
}
args.push(context.display().to_string());
args
}
/// Arguments passés à `docker run` (tout ce qui suit le verbe `run`).
pub fn run_args(
&self,
workspace_dir: &Path,
container_name: &str,
image_tag: &str,
network: Option<&str>,
) -> Vec<String> {
let workspace_folder = self.workspace_folder();
let mut args = vec![
"-d".to_string(),
"--name".to_string(),
container_name.to_string(),
"-v".to_string(),
format!("{}:{}", workspace_dir.display(), workspace_folder),
"-w".to_string(),
workspace_folder.to_string(),
];
if let Some(network) = network {
args.push("--network".to_string());
args.push(network.to_string());
}
if let Some(user) = &self.remote_user {
args.push("--user".to_string());
args.push(user.clone());
}
for (key, value) in &self.container_env {
args.push("-e".to_string());
args.push(format!("{key}={value}"));
}
args.extend(self.run_args.iter().cloned());
args.push(image_tag.to_string());
// Maintient le container en vie pour pouvoir y exécuter `exec`.
args.push("sleep".to_string());
args.push("infinity".to_string());
args
}
/// Dossier de workspace dans le container, par défaut `/workspaces/workspace`.
pub fn workspace_folder(&self) -> String {
self.workspace_folder
.clone()
.unwrap_or_else(|| "/workspaces/workspace".to_string())
}
/// Nom de container unique pour cette exécution.
pub fn container_name(&self) -> String {
let base = self.name.as_deref().unwrap_or("devcontainer");
format!("devcontainer-rs-{}-{}", sanitize(base), unique_suffix())
}
/// Construit l'image devcontainer sous `image_tag`.
pub async fn build(
&self,
runtime: &ContainerRuntime,
image_tag: &str,
) -> Result<(), ContainerError> {
let mut args = vec!["build".to_string()];
args.extend(self.build_args(image_tag));
runtime
.run(&args)
.await?
.ensure_success(runtime.program(), &args)?;
Ok(())
}
/// Construit l'image, démarre le container avec le workspace monté, exécute les
/// hooks `postCreateCommand` / `postStartCommand` avec accès au réseau, puis
/// déconnecte le container du réseau.
///
/// En cas d'échec, le container, le réseau et l'image sont nettoyés avant de
/// renvoyer l'erreur, afin qu'aucune ressource ne soit laissée en place.
pub async fn up(
&self,
runtime: &ContainerRuntime,
workspace_dir: &Path,
) -> Result<Container, ContainerError> {
let image_tag = self.image_tag();
self.build(runtime, &image_tag).await?;
let name = self.container_name();
let network = format!("{name}-net");
// Réseau dédié afin de pouvoir couper la connectivité après les hooks.
let args = vec!["network".to_string(), "create".to_string(), network.clone()];
if let Err(err) = runtime
.run(&args)
.await
.and_then(|out| out.ensure_success(runtime.program(), &args))
{
let _ = runtime.run(&["rmi".to_string(), image_tag]).await;
return Err(err);
}
let mut args = vec!["run".to_string()];
args.extend(self.run_args(workspace_dir, &name, &image_tag, Some(&network)));
if let Err(err) = runtime
.run(&args)
.await
.and_then(|out| out.ensure_success(runtime.program(), &args))
{
let _ = runtime
.run(&["network".to_string(), "rm".to_string(), network])
.await;
let _ = runtime.run(&["rmi".to_string(), image_tag]).await;
return Err(err);
}
let container = Container {
runtime: runtime.clone(),
name,
workspace_folder: self.workspace_folder(),
remote_user: self.remote_user.clone(),
network: Some(network.clone()),
image: Some(image_tag),
};
// Les hooks s'exécutent avec accès au réseau (installation de dépendances, etc.).
if let Err(err) = self.run_hooks(&container).await {
let _ = container.remove().await;
return Err(err);
}
// Coupe l'accès réseau pour le reste de la durée de vie de la sandbox.
let args = vec![
"network".to_string(),
"disconnect".to_string(),
network,
container.name.clone(),
];
if let Err(err) = runtime
.run(&args)
.await
.and_then(|out| out.ensure_success(runtime.program(), &args))
{
let _ = container.remove().await;
return Err(err);
}
Ok(container)
}
async fn run_hooks(&self, container: &Container) -> Result<(), ContainerError> {
// Les hooks peuvent installer des dépendances, ils utilisent donc le timeout
// long des commandes plutôt que le court réservé à l'exécution des outils.
let timeout = container.runtime.timeout();
for command in [&self.post_create_command, &self.post_start_command]
.into_iter()
.flatten()
{
let output = container
.exec_with_timeout(&["sh", "-c", command], timeout)
.await?;
output.ensure_success(
container.runtime.program(),
&["exec".to_string(), command.clone()],
)?;
}
Ok(())
}
}
/// Nettoie une chaîne pour qu'elle puisse servir de nom d'image/container docker.
fn sanitize(input: &str) -> String {
let sanitized: String = input
.chars()
.map(|c| {
if c.is_ascii_alphanumeric() || c == '-' || c == '_' || c == '.' {
c.to_ascii_lowercase()
} else {
'-'
}
})
.collect();
let trimmed = sanitized.trim_matches(|c| c == '-' || c == '.' || c == '_');
if trimmed.is_empty() {
"devcontainer".to_string()
} else {
trimmed.to_string()
}
}
/// Suffixe unique à une exécution de sandbox, combinant l'identifiant de processus et un horodatage.
fn unique_suffix() -> String {
let nanos = SystemTime::now()
.duration_since(UNIX_EPOCH)
.map(|duration| duration.as_nanos())
.unwrap_or(0);
format!("{}-{}", std::process::id(), nanos)
}
/// Normalise lexicalement un chemin, en résolvant `.` et `..` sans toucher au
/// système de fichiers. Renvoie `None` si le chemin sort de sa racine.
pub fn normalize(path: &Path) -> Option<PathBuf> {
use std::path::Component;
let mut out = PathBuf::new();
for component in path.components() {
match component {
Component::RootDir => out.push("/"),
Component::CurDir => {}
Component::ParentDir => {
if !out.pop() {
return None;
}
}
Component::Normal(part) => out.push(part),
Component::Prefix(_) => return None,
}
}
Some(out)
}
#[cfg(test)]
mod tests {
use super::*;
use std::fs;
fn devcontainer(dir: &Path) -> DevContainer {
let devcontainer_path = dir.join("devcontainer.json");
let dockerfile_path = dir.join("Dockerfile");
fs::write(&dockerfile_path, "FROM alpine\n").unwrap();
fs::write(
&devcontainer_path,
r#"{
"name": "My Project",
"build": {
"dockerfile": "Dockerfile",
"args": { "VERSION": "1" }
},
"workspaceFolder": "/workspaces/my-project",
"containerEnv": { "RUST_LOG": "debug" },
"remoteUser": "dev",
"runArgs": ["--userns=keep-id"]
}"#,
)
.unwrap();
let runtime = tokio::runtime::Runtime::new().unwrap();
runtime.block_on(crate::parse(&devcontainer_path)).unwrap()
}
#[test]
fn image_name_is_sanitized() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
assert_eq!(dc.image_name(), "devcontainer-rs/my-project");
}
#[test]
fn image_tags_are_unique() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
assert_ne!(dc.image_tag(), dc.image_tag());
}
#[test]
fn build_args_include_dockerfile_tag_build_args_and_context() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
let args = dc.build_args("devcontainer-rs/my-project:test");
assert_eq!(args[0], "-f");
assert!(args[1].ends_with("Dockerfile"));
assert_eq!(args[2], "-t");
assert_eq!(args[3], "devcontainer-rs/my-project:test");
assert!(args.contains(&"--build-arg".to_string()));
assert!(args.contains(&"VERSION=1".to_string()));
assert_eq!(args.last().unwrap(), &dir.path().display().to_string());
}
#[test]
fn run_args_mount_workspace_and_keep_alive() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
let workspace = Path::new("/tmp/clone");
let args = dc.run_args(
workspace,
"devcontainer-rs-my-project-42",
"devcontainer-rs/my-project:test",
Some("sandbox-net"),
);
assert!(args.contains(&"-d".to_string()));
assert!(args.contains(&"--name".to_string()));
assert!(args.contains(&"devcontainer-rs-my-project-42".to_string()));
assert!(args.contains(&"/tmp/clone:/workspaces/my-project".to_string()));
assert!(args.contains(&"--network".to_string()));
assert!(args.contains(&"sandbox-net".to_string()));
assert!(args.contains(&"--user".to_string()));
assert!(args.contains(&"dev".to_string()));
assert!(args.contains(&"RUST_LOG=debug".to_string()));
assert!(args.contains(&"--userns=keep-id".to_string()));
assert!(args.contains(&"devcontainer-rs/my-project:test".to_string()));
assert_eq!(
&args[args.len() - 2..],
&["sleep".to_string(), "infinity".to_string()]
);
}
#[test]
fn normalize_rejects_escaping_paths() {
assert_eq!(
normalize(Path::new("/workspaces/project/src/../main.rs")),
Some(PathBuf::from("/workspaces/project/main.rs"))
);
assert_eq!(normalize(Path::new("/workspaces/../../etc/passwd")), None);
}
#[tokio::test]
async fn run_captures_output() {
let runtime = ContainerRuntime::new("echo");
let output = runtime.run(&["hello".to_string()]).await.unwrap();
assert!(output.success());
assert_eq!(output.stdout.trim(), "hello");
}
#[tokio::test]
async fn run_times_out_and_kills_the_process() {
let runtime = ContainerRuntime::new("sleep");
let err = runtime
.run_with_timeout(&["10".to_string()], Duration::from_millis(50))
.await
.unwrap_err();
assert!(matches!(err, ContainerError::Timeout { .. }));
}
}
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//! Empaquetage en flux du contexte de build envoyé au daemon.
use std::{
io::{BufWriter, Write},
path::Path,
};
use bytes::Bytes;
use futures_util::Stream;
use tokio::sync::mpsc;
use tokio_stream::wrappers::ReceiverStream;
use crate::consts::{CONTEXT_CHUNK_SIZE, CONTEXT_CHUNKS};
/// Empaquette le contexte de build dans un tar, **en flux**.
///
/// Le CLI `docker build` empaquette le contexte puis l'envoie ; le faire d'un coup
/// chargerait tout le dossier en mémoire, ce qui devient intenable dès que le
/// `.devcontainer` embarque des binaires. Ici l'archive est écrite par une tâche
/// bloquante et poussée morceau par morceau, avec la contre-pression du canal :
/// si le daemon lit lentement, l'empaquetage ralentit.
pub(crate) fn tar_directory_stream(
dir: &Path,
) -> impl Stream<Item = Result<Bytes, std::io::Error>> + Send + 'static {
let (sender, receiver) = mpsc::channel(CONTEXT_CHUNKS);
let failures = sender.clone();
let dir = dir.to_path_buf();
tokio::task::spawn_blocking(move || {
let writer = BufWriter::with_capacity(CONTEXT_CHUNK_SIZE, ChannelWriter { sender });
let mut builder = tar::Builder::new(writer);
let result = builder
.append_dir_all(".", &dir)
.and_then(|()| builder.finish())
// `finish` écrit les blocs de fin d'archive ; il reste à vider le tampon
// pour que le daemon reçoive tout, y compris une archive vide.
.and_then(|()| builder.get_mut().flush());
if let Err(error) = result {
// L'échec est remonté au daemon par le flux : sinon il ne verrait qu'un
// tar tronqué et signalerait une erreur incompréhensible.
let _ = failures.blocking_send(Err(error));
}
});
ReceiverStream::new(receiver)
}
/// Écrit les morceaux du tar dans un canal, en attendant qu'il se vide.
///
/// Utilisé depuis une tâche bloquante, seul contexte où `blocking_send` est autorisé.
struct ChannelWriter {
sender: mpsc::Sender<Result<Bytes, std::io::Error>>,
}
impl Write for ChannelWriter {
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
self.sender
.blocking_send(Ok(Bytes::copy_from_slice(buf)))
.map_err(|_| {
std::io::Error::new(
std::io::ErrorKind::BrokenPipe,
"the daemon dropped the build context",
)
})?;
Ok(buf.len())
}
fn flush(&mut self) -> std::io::Result<()> {
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::fs;
use futures_util::StreamExt;
/// Rassemble le flux du contexte en un tar complet, pour l'inspecter.
async fn context_tar(dir: &Path) -> Vec<u8> {
let mut tar = Vec::new();
let mut chunks = tar_directory_stream(dir);
while let Some(chunk) = chunks.next().await {
tar.extend_from_slice(&chunk.unwrap());
}
tar
}
#[tokio::test]
async fn tar_context_holds_the_devcontainer_files() {
let dir = tempfile::tempdir().unwrap();
let devcontainer_dir = dir.path().join(".devcontainer");
fs::create_dir(&devcontainer_dir).unwrap();
fs::write(devcontainer_dir.join("Dockerfile"), "FROM alpine\n").unwrap();
fs::write(devcontainer_dir.join("devcontainer.json"), "{}").unwrap();
let tar = context_tar(&devcontainer_dir).await;
let mut archive = tar::Archive::new(tar.as_slice());
let names = archive
.entries()
.unwrap()
.map(|entry| entry.unwrap().path().unwrap().display().to_string())
.collect::<Vec<_>>();
assert!(names.iter().any(|name| name.ends_with("Dockerfile")));
assert!(names.iter().any(|name| name.ends_with("devcontainer.json")));
}
#[tokio::test]
async fn tar_context_keeps_the_executable_bit() {
let dir = tempfile::tempdir().unwrap();
let script = dir.path().join("setup.sh");
fs::write(&script, "#!/bin/sh\n").unwrap();
#[cfg(unix)]
{
use std::os::unix::fs::PermissionsExt;
fs::set_permissions(&script, fs::Permissions::from_mode(0o755)).unwrap();
}
let tar = context_tar(dir.path()).await;
let mut archive = tar::Archive::new(tar.as_slice());
let mode = archive
.entries()
.unwrap()
.map(|entry| entry.unwrap())
.find(|entry| entry.path().unwrap().ends_with("setup.sh"))
.unwrap()
.header()
.mode()
.unwrap();
assert_eq!(mode & 0o111, 0o111);
}
#[tokio::test]
async fn tar_context_is_sent_in_chunks() {
let dir = tempfile::tempdir().unwrap();
fs::write(
dir.path().join("big.bin"),
vec![0_u8; CONTEXT_CHUNK_SIZE * 3],
)
.unwrap();
let mut chunks = tar_directory_stream(dir.path());
let mut count = 0;
while let Some(chunk) = chunks.next().await {
assert!(chunk.unwrap().len() <= CONTEXT_CHUNK_SIZE);
count += 1;
}
assert!(
count > 1,
"the context should be streamed, not buffered in one piece"
);
}
}
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//! Représentation analysée d'un `devcontainer.json` et son cycle de vie :
//! nommage, build, démarrage et hooks.
use std::{
collections::HashMap,
path::{Path, PathBuf},
time::{Duration, SystemTime, UNIX_EPOCH},
};
use bollard::models::{ContainerCreateBody, HostConfig};
use crate::{container::Container, errors::ContainerError, runtime::ContainerRuntime};
#[derive(Debug)]
pub struct DevContainer {
pub container_file_path: PathBuf,
pub name: Option<String>,
pub build_args: HashMap<String, String>,
pub container_env: HashMap<String, String>,
pub workspace_folder: Option<String>,
pub post_create_command: Option<String>,
pub post_start_command: Option<String>,
pub remote_user: Option<String>,
}
impl DevContainer {
/// Nom de l'image de base dérivé du nom du devcontainer.
pub fn image_name(&self) -> String {
let base = self.name.as_deref().unwrap_or("devcontainer");
format!("devcontainer-rs/{}", sanitize(base))
}
/// Tag d'image unique pour une exécution de sandbox donnée.
///
/// L'unicité est importante : deux sandboxes concurrentes (éventuellement pour des
/// dépôts différents partageant un nom de devcontainer) ne doivent pas se disputer le même tag.
pub fn image_tag(&self) -> String {
format!("{}:{}", self.image_name(), unique_suffix())
}
/// Dossier de workspace dans le container, par défaut `/workspaces/workspace`.
pub fn workspace_folder(&self) -> String {
self.workspace_folder
.clone()
.unwrap_or_else(|| "/workspaces/workspace".to_string())
}
/// Nom de container unique pour cette exécution.
pub fn container_name(&self) -> String {
let base = self.name.as_deref().unwrap_or("devcontainer");
format!("devcontainer-rs-{}-{}", sanitize(base), unique_suffix())
}
/// Construit l'image devcontainer sous `image_tag`.
pub async fn build(
&self,
runtime: &ContainerRuntime,
image_tag: &str,
) -> Result<(), ContainerError> {
let context = self.container_file_path.parent().ok_or_else(|| {
ContainerError::Unexpected(String::from(
"the devcontainer file path has no parent directory",
))
})?;
let dockerfile = self
.container_file_path
.file_name()
.and_then(|name| name.to_str())
.ok_or_else(|| {
ContainerError::Unexpected(String::from(
"the devcontainer file name is not valid UTF-8",
))
})?;
runtime
.build_image(context, dockerfile, image_tag, &self.build_args)
.await
}
/// Construit l'image, démarre le container, exécute les hooks puis coupe le réseau.
///
/// En cas d'échec, le container, le réseau et l'image sont nettoyés avant de
/// renvoyer l'erreur, afin qu'aucune ressource ne soit laissée en place.
pub async fn up(
&self,
runtime: &ContainerRuntime,
workspace_dir: &Path,
) -> Result<Container, ContainerError> {
let image_tag = self.image_tag();
self.build(runtime, &image_tag).await?;
let name = self.container_name();
let network = format!("{name}-net");
// Réseau dédié afin de pouvoir couper la connectivité après les hooks.
if let Err(err) = runtime.create_network(&network).await {
let _ = runtime.remove_image(&image_tag).await;
return Err(err);
}
let workspace_folder = self.workspace_folder();
let body = ContainerCreateBody {
image: Some(image_tag.clone()),
cmd: Some(vec![String::from("sleep"), String::from("infinity")]),
user: self.remote_user.clone(),
env: Some(
self.container_env
.iter()
.map(|(key, value)| format!("{key}={value}"))
.collect(),
),
working_dir: Some(workspace_folder.clone()),
host_config: Some(HostConfig {
network_mode: Some(network.clone()),
..Default::default()
}),
..Default::default()
};
if let Err(err) = runtime.create_container(&name, body).await {
let _ = runtime.remove_network(&network).await;
let _ = runtime.remove_image(&image_tag).await;
return Err(err);
}
if let Err(err) = runtime.start_container(&name).await {
let _ = runtime.remove_container(&name).await;
let _ = runtime.remove_network(&network).await;
let _ = runtime.remove_image(&image_tag).await;
return Err(err);
}
// Le clone est copié dans le container par le socket, pas monté depuis un
// chemin de l'hôte : le daemon n'a pas besoin de voir le clone pour le rendre
// visible dans la sandbox, ce qui permet à Herald de tourner dans un container
// (avec le socket monté) sans partager de dossier avec l'hôte.
if let Err(err) = runtime
.upload_directory(&name, &workspace_folder, workspace_dir)
.await
{
let _ = runtime.remove_container(&name).await;
let _ = runtime.remove_network(&network).await;
let _ = runtime.remove_image(&image_tag).await;
return Err(err);
}
let container = Container::new(
runtime.clone(),
name,
self.workspace_folder(),
self.remote_user.clone(),
Some(network.clone()),
Some(image_tag),
);
// Les hooks s'exécutent avec accès au réseau (installation de dépendances, etc.).
if let Err(err) = self.run_hooks(&container, runtime.timeout()).await {
let _ = container.remove().await;
return Err(err);
}
// Coupe l'accès réseau pour le reste de la durée de vie de la sandbox.
if let Err(err) = runtime.disconnect_network(&network, container.name()).await {
let _ = container.remove().await;
return Err(err);
}
Ok(container)
}
async fn run_hooks(
&self,
container: &Container,
timeout: Duration,
) -> Result<(), ContainerError> {
for command in [&self.post_create_command, &self.post_start_command]
.into_iter()
.flatten()
{
let output = container
.exec_with_timeout(&["sh", "-c", command], timeout)
.await?;
if !output.success() {
return Err(ContainerError::Unexpected(format!(
"hook `{command}` failed with status {}: {}",
output.status,
output.stderr.trim()
)));
}
}
Ok(())
}
}
/// Nettoie une chaîne pour qu'elle puisse servir de nom d'image/container docker.
fn sanitize(input: &str) -> String {
let sanitized: String = input
.chars()
.map(|c| {
if c.is_ascii_alphanumeric() || c == '-' || c == '_' || c == '.' {
c.to_ascii_lowercase()
} else {
'-'
}
})
.collect();
let trimmed = sanitized.trim_matches(|c| c == '-' || c == '.' || c == '_');
if trimmed.is_empty() {
"devcontainer".to_string()
} else {
trimmed.to_string()
}
}
/// Suffixe unique à une exécution de sandbox, combinant l'identifiant de processus et un horodatage.
fn unique_suffix() -> String {
let nanos = SystemTime::now()
.duration_since(UNIX_EPOCH)
.map(|duration| duration.as_nanos())
.unwrap_or(0);
format!("{}-{}", std::process::id(), nanos)
}
#[cfg(test)]
mod tests {
use super::*;
use std::fs;
fn devcontainer(dir: &Path) -> DevContainer {
let devcontainer_path = dir.join("devcontainer.json");
let dockerfile_path = dir.join("Dockerfile");
fs::write(&dockerfile_path, "FROM alpine\n").unwrap();
fs::write(
&devcontainer_path,
r#"{
"name": "My Project",
"build": {
"dockerfile": "Dockerfile",
"args": { "VERSION": "1" }
},
"workspaceFolder": "/workspaces/my-project",
"containerEnv": { "RUST_LOG": "debug" },
"remoteUser": "dev"
}"#,
)
.unwrap();
let runtime = tokio::runtime::Runtime::new().unwrap();
runtime.block_on(crate::parse(&devcontainer_path)).unwrap()
}
#[test]
fn image_name_is_sanitized() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
assert_eq!(dc.image_name(), "devcontainer-rs/my-project");
}
#[test]
fn image_tags_are_unique() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
assert_ne!(dc.image_tag(), dc.image_tag());
}
#[test]
fn container_name_is_sanitized() {
let dir = tempfile::tempdir().unwrap();
let dc = devcontainer(dir.path());
assert!(
dc.container_name()
.starts_with("devcontainer-rs-my-project-")
);
}
}
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//! Erreurs de la crate : échecs du daemon de containers et échecs d'analyse du
//! `devcontainer.json`.
use std::{path::PathBuf, time::Duration};
use bollard::errors::Error as BollardError;
#[derive(Debug, thiserror::Error)]
pub enum ContainerError {
/// Le daemon est injoignable, ou a refusé une requête.
#[error("container daemon request failed: {source}")]
Request {
#[from]
source: BollardError,
},
/// Une opération a dépassé son timeout.
#[error("`{operation}` timed out after {timeout:?}")]
Timeout {
operation: String,
timeout: Duration,
},
/// La construction de l'image a échoué.
#[error("image build failed: {message}")]
Build { message: String },
/// Le daemon a répondu autre chose que ce qui était attendu.
#[error("{0}")]
Unexpected(String),
}
#[derive(Debug, thiserror::Error)]
pub enum ParseError {
#[error("failed to read devcontainer file `{path}`: {source}")]
Read {
path: PathBuf,
source: std::io::Error,
},
#[error("invalid devcontainer JSON in `{path}`: {source}")]
Json {
path: PathBuf,
source: serde_json::Error,
},
#[error("container file `{0}` does not exist or is not a regular file")]
ContainerFileNotFound(PathBuf),
#[error("the devcontainer file path has no parent directory: `{0}`")]
InvalidDevContainerPath(PathBuf),
}
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//! Résultat d'une commande exécutée dans un container.
/// Résultat d'une commande exécutée dans un container.
#[derive(Debug, Clone)]
pub struct ExecOutput {
/// Code de sortie, ou `-1` si le processus a été terminé par un signal.
pub status: i32,
pub stdout: String,
pub stderr: String,
}
impl ExecOutput {
pub fn success(&self) -> bool {
self.status == 0
}
}
+40 -245
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@@ -1,248 +1,43 @@
use std::{
collections::HashMap,
path::{Path, PathBuf},
};
use serde::Deserialize;
//! Primitives de cycle de vie de container pour un [`DevContainer`] analysé.
//!
//! Cette crate pilote l'API du daemon de containers pour construire l'image
//! devcontainer, démarrer un container et y copier le workspace, exécuter les
//! hooks `postCreateCommand` / `postStartCommand` et lancer des commandes à
//! l'intérieur du container en cours d'exécution.
//!
//! Le daemon est joint par son **socket** (celui de l'hôte, monté dans le
//! container de Herald) : [`ContainerRuntime::connect`] suit `DOCKER_HOST` comme
//! le fait le CLI `docker`, et retombe sur le socket local. Aucun binaire de
//! runtime n'est donc requis dans l'image, et `podman` fonctionne de la même
//! façon dès lors qu'il expose son socket compatible Docker.
//!
//! # Isolation
//!
//! Chaque sandbox dispose de son propre tag d'image, de son propre container et de
//! son propre réseau. Le container démarre attaché à ce réseau afin que les hooks
//! `postCreateCommand` / `postStartCommand` puissent récupérer des dépendances
//! (par ex. `npm install`) ; une fois les hooks exécutés, le container est déconnecté
//! du réseau pour le reste de sa durée de vie. Chaque commande est bornée par un timeout.
//!
//! Les `runArgs` du `devcontainer.json` sont lus mais pas transmis au daemon : ils
//! viennent du dépôt, donc d'une pull request non fiable, et pourraient rattacher le
//! container à un autre réseau ou lui donner des privilèges qui annuleraient cette
//! isolation.
mod consts;
mod container;
mod context;
mod devcontainer;
mod errors;
mod exec;
mod path;
mod runtime;
mod schema;
pub use container::{Container, ContainerError, ContainerRuntime, ExecOutput, normalize};
#[derive(Debug, Deserialize)]
pub struct DevContainerBuildSchema {
#[serde(default)]
pub dockerfile: String,
#[serde(default)]
pub args: HashMap<String, String>,
}
#[derive(Debug, Deserialize)]
pub struct DevContainerSchema {
#[serde(default)]
pub name: Option<String>,
pub build: DevContainerBuildSchema,
#[serde(rename = "workspaceFolder", default)]
pub workspace_folder: Option<String>,
#[serde(rename = "containerEnv", default)]
pub container_env: HashMap<String, String>,
#[serde(rename = "postCreateCommand", default)]
pub post_create_command: Option<String>,
#[serde(rename = "postStartCommand", default)]
pub post_start_command: Option<String>,
#[serde(rename = "remoteUser", default)]
pub remote_user: Option<String>,
#[serde(rename = "runArgs", default)]
pub run_args: Vec<String>,
}
#[derive(Debug)]
pub struct DevContainer {
pub container_file_path: PathBuf,
pub name: Option<String>,
pub build_args: HashMap<String, String>,
pub container_env: HashMap<String, String>,
pub workspace_folder: Option<String>,
pub post_create_command: Option<String>,
pub post_start_command: Option<String>,
pub remote_user: Option<String>,
pub run_args: Vec<String>,
}
#[derive(Debug, thiserror::Error)]
pub enum ParseError {
#[error("failed to read devcontainer file `{path}`: {source}")]
Read {
path: PathBuf,
source: std::io::Error,
},
#[error("invalid devcontainer JSON in `{path}`: {source}")]
Json {
path: PathBuf,
source: serde_json::Error,
},
#[error("container file `{0}` does not exist or is not a regular file")]
ContainerFileNotFound(PathBuf),
#[error("the devcontainer file path has no parent directory: `{0}`")]
InvalidDevContainerPath(PathBuf),
}
impl TryFrom<(DevContainerSchema, PathBuf)> for DevContainer {
type Error = ParseError;
fn try_from(
(schema, devcontainer_path): (DevContainerSchema, PathBuf),
) -> Result<Self, Self::Error> {
let base_dir = devcontainer_path
.parent()
.ok_or_else(|| ParseError::InvalidDevContainerPath(devcontainer_path.clone()))?;
let container_file_path = base_dir.join(schema.build.dockerfile);
if !container_file_path.is_file() {
return Err(ParseError::ContainerFileNotFound(container_file_path));
}
let build_args = schema
.build
.args
.into_iter()
.map(|(k, v)| (k, substitute_local_env(&v)))
.collect();
let container_env = schema
.container_env
.into_iter()
.map(|(k, v)| (k, substitute_local_env(&v)))
.collect();
Ok(Self {
container_file_path,
name: schema.name,
build_args,
container_env,
workspace_folder: schema.workspace_folder,
post_create_command: schema.post_create_command,
post_start_command: schema.post_start_command,
remote_user: schema.remote_user,
run_args: schema.run_args,
})
}
}
/// Résout les références `${localEnv:VAR}` et `${localEnv:VAR:default}` à l'aide de
/// l'environnement du processus courant, comme décrit par la spécification devcontainer.
/// Les variables non résolues sans valeur par défaut sont remplacées par une chaîne vide.
fn substitute_local_env(input: &str) -> String {
const PREFIX: &str = "${localEnv:";
let mut out = String::with_capacity(input.len());
let mut rest = input;
while let Some(start) = rest.find(PREFIX) {
out.push_str(&rest[..start]);
let after = &rest[start + PREFIX.len()..];
match after.find('}') {
Some(end) => {
let inner = &after[..end];
let (key, default) = match inner.split_once(':') {
Some((key, default)) => (key, Some(default)),
None => (inner, None),
};
match std::env::var(key) {
Ok(value) => out.push_str(&value),
Err(_) => out.push_str(default.unwrap_or("")),
}
rest = &after[end + 1..];
}
None => {
out.push_str(PREFIX);
rest = after;
}
}
}
out.push_str(rest);
out
}
pub async fn parse(path: impl AsRef<Path>) -> Result<DevContainer, ParseError> {
let path = path.as_ref().to_path_buf();
let contents = tokio::fs::read_to_string(&path)
.await
.map_err(|source| ParseError::Read {
path: path.clone(),
source,
})?;
let schema = serde_json::from_str::<DevContainerSchema>(&contents).map_err(|source| {
ParseError::Json {
path: path.clone(),
source,
}
})?;
DevContainer::try_from((schema, path))
}
#[cfg(test)]
mod tests {
use super::*;
use std::fs;
#[tokio::test]
async fn parses_devcontainer_file() {
let dir = tempfile::tempdir().unwrap();
let devcontainer_path = dir.path().join("devcontainer.json");
let dockerfile_path = dir.path().join("Dockerfile");
fs::write(&dockerfile_path, "FROM alpine\n").unwrap();
fs::write(
&devcontainer_path,
r#"{
"name": "test",
"build": {
"dockerfile": "Dockerfile",
"args": {
"VERSION": "1"
}
},
"workspaceFolder": "/workspace",
"containerEnv": {
"RUST_LOG": "debug"
},
"remoteUser": "dev",
"runArgs": ["--userns=keep-id"]
}"#,
)
.unwrap();
let config = parse(&devcontainer_path).await.unwrap();
assert_eq!(config.name.as_deref(), Some("test"));
assert_eq!(config.container_file_path, dockerfile_path);
assert_eq!(config.build_args.get("VERSION").unwrap(), "1");
assert_eq!(config.container_env.get("RUST_LOG").unwrap(), "debug");
assert_eq!(config.workspace_folder.as_deref(), Some("/workspace"));
assert_eq!(config.remote_user.as_deref(), Some("dev"));
assert_eq!(config.run_args, vec!["--userns=keep-id"]);
}
#[test]
fn substitutes_local_env_with_default() {
unsafe { std::env::set_var("DEVCONTAINER_TEST_UID", "1000") };
assert_eq!(
substitute_local_env("${localEnv:DEVCONTAINER_TEST_UID}"),
"1000"
);
assert_eq!(
substitute_local_env("uid=${localEnv:DEVCONTAINER_TEST_UID}"),
"uid=1000"
);
assert_eq!(
substitute_local_env("${localEnv:DEVCONTAINER_TEST_MISSING:fallback}"),
"fallback"
);
assert_eq!(
substitute_local_env("${localEnv:DEVCONTAINER_TEST_MISSING}"),
""
);
assert_eq!(
substitute_local_env("no variables here"),
"no variables here"
);
}
}
pub use container::Container;
pub use devcontainer::DevContainer;
pub use errors::{ContainerError, ParseError};
pub use exec::ExecOutput;
pub use path::normalize;
pub use runtime::ContainerRuntime;
pub use schema::{DevContainerBuildSchema, DevContainerSchema, parse};
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//! Normalisation lexicale de chemins, sans accès au système de fichiers.
use std::path::{Path, PathBuf};
/// Normalise lexicalement un chemin, en résolvant `.` et `..` sans toucher au
/// système de fichiers. Renvoie `None` si le chemin sort de sa racine.
pub fn normalize(path: &Path) -> Option<PathBuf> {
use std::path::Component;
let mut out = PathBuf::new();
for component in path.components() {
match component {
Component::RootDir => out.push("/"),
Component::CurDir => {}
Component::ParentDir => {
if !out.pop() {
return None;
}
}
Component::Normal(part) => out.push(part),
Component::Prefix(_) => return None,
}
}
Some(out)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn normalize_rejects_escaping_paths() {
assert_eq!(
normalize(Path::new("/workspaces/project/src/../main.rs")),
Some(PathBuf::from("/workspaces/project/main.rs"))
);
assert_eq!(normalize(Path::new("/workspaces/../../etc/passwd")), None);
}
}
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//! Client de l'API du daemon de containers et opérations de cycle de vie.
use std::{collections::HashMap, path::Path, time::Duration};
use bollard::{
Docker, body_try_stream,
container::LogOutput,
errors::Error as BollardError,
exec::{CreateExecOptions, StartExecOptions, StartExecResults},
models::{BuildInfo, ContainerCreateBody, NetworkCreateRequest, NetworkDisconnectRequest},
query_parameters::{
BuildImageOptions, CreateContainerOptions, RemoveContainerOptions, RemoveImageOptions,
StartContainerOptions, StopContainerOptions, UploadToContainerOptions,
},
};
use futures_util::StreamExt;
use crate::{
consts::{DEFAULT_COMMAND_TIMEOUT, DEFAULT_ENDPOINT, EXIT_CODE_ATTEMPTS, EXIT_CODE_DELAY},
context::tar_directory_stream,
errors::ContainerError,
exec::ExecOutput,
};
/// Un client de l'API du daemon de containers.
#[derive(Debug, Clone)]
pub struct ContainerRuntime {
docker: Docker,
endpoint: String,
timeout: Duration,
}
impl ContainerRuntime {
/// Se connecte au daemon désigné par `DOCKER_HOST`, ou au socket local par défaut.
pub fn connect() -> Result<Self, ContainerError> {
let endpoint =
std::env::var("DOCKER_HOST").unwrap_or_else(|_| String::from(DEFAULT_ENDPOINT));
Ok(Self {
docker: Docker::connect_with_defaults()?,
endpoint,
timeout: DEFAULT_COMMAND_TIMEOUT,
})
}
/// Remplace le timeout appliqué aux opérations de build/run/stop/remove.
pub fn with_timeout(mut self, timeout: Duration) -> Self {
self.timeout = timeout;
self
}
/// Endpoint du daemon, pour les logs.
pub fn endpoint(&self) -> &str {
&self.endpoint
}
pub fn timeout(&self) -> Duration {
self.timeout
}
/// Vérifie que le daemon est joignable et répond.
pub async fn available(&self) -> bool {
self.docker.ping().await.is_ok()
}
/// Exécute une requête du daemon en appliquant le timeout des commandes.
async fn request<T>(
&self,
operation: &str,
request: impl Future<Output = Result<T, BollardError>>,
) -> Result<T, ContainerError> {
match tokio::time::timeout(self.timeout, request).await {
Ok(Ok(value)) => Ok(value),
Ok(Err(source)) => Err(ContainerError::Request { source }),
Err(_) => Err(ContainerError::Timeout {
operation: String::from(operation),
timeout: self.timeout,
}),
}
}
/// Construit l'image `tag` depuis le contexte `context_dir`.
pub(crate) async fn build_image(
&self,
context_dir: &Path,
dockerfile: &str,
tag: &str,
build_args: &HashMap<String, String>,
) -> Result<(), ContainerError> {
let options = BuildImageOptions {
dockerfile: String::from(dockerfile),
t: Some(String::from(tag)),
buildargs: Some(build_args.clone()),
rm: true,
..Default::default()
};
let context = tar_directory_stream(context_dir);
let mut stream = self
.docker
.build_image(options, None, Some(body_try_stream(context)));
// Le flux porte la progression du build : la dernière erreur signalée par le
// daemon fait échouer l'opération.
let consume = async {
let mut failure = None;
while let Some(info) = stream.next().await {
let info: BuildInfo = info?;
if let Some(message) = info.error_detail.and_then(|detail| detail.message) {
failure = Some(message);
}
}
Ok::<_, BollardError>(failure)
};
let failure = match tokio::time::timeout(self.timeout, consume).await {
Ok(Ok(failure)) => failure,
Ok(Err(source)) => return Err(ContainerError::Request { source }),
Err(_) => {
return Err(ContainerError::Timeout {
operation: format!("build image `{tag}`"),
timeout: self.timeout,
});
}
};
match failure {
Some(message) => Err(ContainerError::Build { message }),
None => Ok(()),
}
}
/// Crée un container, sans le démarrer.
pub(crate) async fn create_container(
&self,
name: &str,
body: ContainerCreateBody,
) -> Result<(), ContainerError> {
let options = CreateContainerOptions {
name: Some(String::from(name)),
..Default::default()
};
self.request(
"create container",
self.docker.create_container(Some(options), body),
)
.await?;
Ok(())
}
pub(crate) async fn upload_directory(
&self,
container: &str,
destination: &str,
directory: &Path,
) -> Result<(), ContainerError> {
let options = UploadToContainerOptions {
path: String::from(destination),
..Default::default()
};
self.request(
"upload workspace",
self.docker.upload_to_container(
container,
Some(options),
body_try_stream(tar_directory_stream(directory)),
),
)
.await?;
Ok(())
}
pub(crate) async fn start_container(&self, name: &str) -> Result<(), ContainerError> {
self.request(
"start container",
self.docker
.start_container(name, None::<StartContainerOptions>),
)
.await?;
Ok(())
}
/// Exécute une commande dans un container et renvoie sa sortie.
pub(crate) async fn exec(
&self,
container: &str,
cmd: &[&str],
user: Option<&str>,
timeout: Duration,
) -> Result<ExecOutput, ContainerError> {
let config = CreateExecOptions {
cmd: Some(cmd.iter().map(|arg| String::from(*arg)).collect()),
user: user.map(String::from),
attach_stdout: Some(true),
attach_stderr: Some(true),
..Default::default()
};
let created = self
.request("create exec", self.docker.create_exec(container, config))
.await?;
let started = self
.request(
"start exec",
self.docker
.start_exec(&created.id, None::<StartExecOptions>),
)
.await?;
let StartExecResults::Attached { mut output, .. } = started else {
return Err(ContainerError::Unexpected(String::from(
"the daemon detached an exec that was not requested as detached",
)));
};
let mut stdout = String::new();
let mut stderr = String::new();
// Le timeout couvre l'exécution de la commande elle-même, pas seulement sa
// mise en place.
let collect = async {
while let Some(message) = output.next().await {
match message? {
LogOutput::StdOut { message } | LogOutput::Console { message } => {
stdout.push_str(&String::from_utf8_lossy(&message));
}
LogOutput::StdErr { message } => {
stderr.push_str(&String::from_utf8_lossy(&message));
}
LogOutput::StdIn { .. } => {}
}
}
Ok::<_, BollardError>(())
};
match tokio::time::timeout(timeout, collect).await {
Ok(Ok(())) => {}
Ok(Err(source)) => return Err(ContainerError::Request { source }),
Err(_) => {
// Le processus continue de tourner dans le container : sans arrêt, il
// consommerait CPU et mémoire et pourrait encore modifier le workspace
// pendant toute la durée de vie de la sandbox. L'API n'offre pas de
// moyen de tuer un exec, on arrête donc le container qui le porte.
let _ = self.stop_container(container).await;
return Err(ContainerError::Timeout {
operation: format!("exec {}", cmd.join(" ")),
timeout,
});
}
}
// Le code de sortie n'est pas forcément publié au moment où le flux se ferme :
// on laisse au daemon le temps de le renseigner, sans bloquer indéfiniment.
// Sans cela, une commande réussie peut être rapportée en échec (code -1) et
// l'outil renvoie une erreur au modèle à la place du contenu.
let mut inspected = self
.request("inspect exec", self.docker.inspect_exec(&created.id))
.await?;
for _ in 0..EXIT_CODE_ATTEMPTS {
if !inspected.running.unwrap_or(false) {
break;
}
tokio::time::sleep(EXIT_CODE_DELAY).await;
inspected = self
.request("inspect exec", self.docker.inspect_exec(&created.id))
.await?;
}
Ok(ExecOutput {
status: inspected.exit_code.unwrap_or(-1) as i32,
stdout,
stderr,
})
}
pub(crate) async fn stop_container(&self, name: &str) -> Result<(), ContainerError> {
let options = StopContainerOptions {
t: Some(1),
..Default::default()
};
self.request(
"stop container",
self.docker.stop_container(name, Some(options)),
)
.await?;
Ok(())
}
/// Supprime un container, ses volumes anonymes et le processus qui y tourne.
pub(crate) async fn remove_container(&self, name: &str) -> Result<(), ContainerError> {
let options = RemoveContainerOptions {
force: true,
v: true,
..Default::default()
};
self.request(
"remove container",
self.docker.remove_container(name, Some(options)),
)
.await?;
Ok(())
}
pub(crate) async fn remove_image(&self, tag: &str) -> Result<(), ContainerError> {
let options = RemoveImageOptions {
force: true,
..Default::default()
};
self.request(
"remove image",
self.docker.remove_image(tag, Some(options), None),
)
.await?;
Ok(())
}
/// Crée le réseau dédié d'une sandbox.
pub(crate) async fn create_network(&self, name: &str) -> Result<(), ContainerError> {
let request = NetworkCreateRequest {
name: String::from(name),
..Default::default()
};
self.request("create network", self.docker.create_network(request))
.await?;
Ok(())
}
/// Détache un container d'un réseau, ce qui coupe sa connectivité.
pub(crate) async fn disconnect_network(
&self,
network: &str,
container: &str,
) -> Result<(), ContainerError> {
let request = NetworkDisconnectRequest {
container: String::from(container),
..Default::default()
};
self.request(
"disconnect network",
self.docker.disconnect_network(network, request),
)
.await?;
Ok(())
}
pub(crate) async fn remove_network(&self, name: &str) -> Result<(), ContainerError> {
self.request("remove network", self.docker.remove_network(name))
.await?;
Ok(())
}
}
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//! Schéma du `devcontainer.json`, analyse du fichier et résolution des
//! références `${localEnv:…}`.
use std::{
collections::HashMap,
path::{Path, PathBuf},
};
use serde::Deserialize;
use crate::{devcontainer::DevContainer, errors::ParseError};
#[derive(Debug, Deserialize)]
pub struct DevContainerBuildSchema {
#[serde(default)]
pub dockerfile: String,
#[serde(default)]
pub args: HashMap<String, String>,
}
#[derive(Debug, Deserialize)]
pub struct DevContainerSchema {
#[serde(default)]
pub name: Option<String>,
pub build: DevContainerBuildSchema,
#[serde(rename = "workspaceFolder", default)]
pub workspace_folder: Option<String>,
#[serde(rename = "containerEnv", default)]
pub container_env: HashMap<String, String>,
#[serde(rename = "postCreateCommand", default)]
pub post_create_command: Option<String>,
#[serde(rename = "postStartCommand", default)]
pub post_start_command: Option<String>,
#[serde(rename = "remoteUser", default)]
pub remote_user: Option<String>,
/// Arguments passés à `docker run`.
///
/// Lus pour rester fidèle au format `devcontainer.json`, mais
/// **délibérément pas transmis** au runtime : ils viennent d'une pull
/// request non fiable et pourraient casser l'isolation de la sandbox, décrite
/// dans le doc de la crate.
#[serde(rename = "runArgs", default)]
pub run_args: Vec<String>,
}
impl TryFrom<(DevContainerSchema, PathBuf)> for DevContainer {
type Error = ParseError;
fn try_from(
(schema, devcontainer_path): (DevContainerSchema, PathBuf),
) -> Result<Self, Self::Error> {
let base_dir = devcontainer_path
.parent()
.ok_or_else(|| ParseError::InvalidDevContainerPath(devcontainer_path.clone()))?;
let container_file_path = base_dir.join(schema.build.dockerfile);
if !container_file_path.is_file() {
return Err(ParseError::ContainerFileNotFound(container_file_path));
}
let build_args = schema
.build
.args
.into_iter()
.map(|(k, v)| (k, substitute_local_env(&v)))
.collect();
let container_env = schema
.container_env
.into_iter()
.map(|(k, v)| (k, substitute_local_env(&v)))
.collect();
Ok(Self {
container_file_path,
name: schema.name,
build_args,
container_env,
workspace_folder: schema.workspace_folder,
post_create_command: schema.post_create_command,
post_start_command: schema.post_start_command,
remote_user: schema.remote_user,
})
}
}
/// Résout les références `${localEnv:VAR}` et `${localEnv:VAR:default}` d'un
/// `devcontainer.json`.
///
/// La spécification veut que `${localEnv:VAR}` soit lu dans l'environnement du
/// client ; ici le `devcontainer.json` vient d'une **pull request**, donc de code
/// non fiable : lire l'environnement du processus lui permettrait de récupérer
/// `GITEA_TOKEN`, `OPEN_ROUTER_API_KEY` ou n'importe quel autre secret de Herald et
/// de l'exfiltrer depuis un `build.args`, un `containerEnv`, son Dockerfile ou un
/// hook. L'environnement n'est donc **jamais** consulté : seule la valeur par
/// défaut est utilisée, et une référence sans défaut devient une chaîne vide.
fn substitute_local_env(input: &str) -> String {
const PREFIX: &str = "${localEnv:";
let mut out = String::with_capacity(input.len());
let mut rest = input;
while let Some(start) = rest.find(PREFIX) {
out.push_str(&rest[..start]);
let after = &rest[start + PREFIX.len()..];
match after.find('}') {
Some(end) => {
let inner = &after[..end];
// La clé est lue pour délimiter la référence, pas pour la résoudre.
let (_key, default) = match inner.split_once(':') {
Some((key, default)) => (key, Some(default)),
None => (inner, None),
};
out.push_str(default.unwrap_or(""));
rest = &after[end + 1..];
}
None => {
out.push_str(PREFIX);
rest = after;
}
}
}
out.push_str(rest);
out
}
pub async fn parse(path: impl AsRef<Path>) -> Result<DevContainer, ParseError> {
let path = path.as_ref().to_path_buf();
let contents = tokio::fs::read_to_string(&path)
.await
.map_err(|source| ParseError::Read {
path: path.clone(),
source,
})?;
let schema = serde_json::from_str::<DevContainerSchema>(&contents).map_err(|source| {
ParseError::Json {
path: path.clone(),
source,
}
})?;
DevContainer::try_from((schema, path))
}
#[cfg(test)]
mod tests {
use super::*;
use std::fs;
#[tokio::test]
async fn parses_devcontainer_file() {
let dir = tempfile::tempdir().unwrap();
let devcontainer_path = dir.path().join("devcontainer.json");
let dockerfile_path = dir.path().join("Dockerfile");
fs::write(&dockerfile_path, "FROM alpine\n").unwrap();
fs::write(
&devcontainer_path,
r#"{
"name": "test",
"build": {
"dockerfile": "Dockerfile",
"args": {
"VERSION": "1"
}
},
"workspaceFolder": "/workspace",
"containerEnv": {
"RUST_LOG": "debug"
},
"remoteUser": "dev"
}"#,
)
.unwrap();
let config = parse(&devcontainer_path).await.unwrap();
assert_eq!(config.name.as_deref(), Some("test"));
assert_eq!(config.container_file_path, dockerfile_path);
assert_eq!(config.build_args.get("VERSION").unwrap(), "1");
assert_eq!(config.container_env.get("RUST_LOG").unwrap(), "debug");
assert_eq!(config.workspace_folder.as_deref(), Some("/workspace"));
assert_eq!(config.remote_user.as_deref(), Some("dev"));
}
#[test]
fn local_env_references_are_never_read_from_the_environment() {
unsafe { std::env::set_var("DEVCONTAINER_TEST_SECRET", "s3cret") };
// Le `devcontainer.json` vient d'une pull request : résoudre la référence
// depuis l'environnement de Herald y exposerait ses jetons.
assert_eq!(
substitute_local_env("${localEnv:DEVCONTAINER_TEST_SECRET}"),
""
);
assert_eq!(
substitute_local_env("token=${localEnv:DEVCONTAINER_TEST_SECRET}"),
"token="
);
}
#[test]
fn local_env_defaults_are_used() {
assert_eq!(
substitute_local_env("${localEnv:DEVCONTAINER_TEST_MISSING:fallback}"),
"fallback"
);
assert_eq!(
substitute_local_env("${localEnv:DEVCONTAINER_TEST_MISSING}"),
""
);
assert_eq!(substitute_local_env("uid=${localEnv:UID:1000}"), "uid=1000");
assert_eq!(
substitute_local_env("no variables here"),
"no variables here"
);
}
}
+56
View File
@@ -23,6 +23,8 @@ pub struct ReviewItem {
pub line: Option<u64>,
#[serde(default, deserialize_with = "deserialize_side")]
pub side: Option<ReviewSide>,
#[serde(default, deserialize_with = "deserialize_severity")]
pub severity: Option<ReviewSeverity>,
pub message: String,
}
@@ -48,6 +50,46 @@ impl ReviewSide {
}
}
/// What kind of problem a review reports.
///
/// The categories are the ones the prompt asks for; a review whose severity is
/// missing or unreadable falls back to [`ReviewSeverity::Maintainability`], the
/// least alarming bucket, instead of failing the whole review.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum ReviewSeverity {
/// Wrong behaviour.
Bug,
/// A vulnerability.
Security,
/// A resource problem.
Performance,
/// Everything else: readability, structure, naming, tests.
Maintainability,
}
impl ReviewSeverity {
/// Reads the severity the model asked for, tolerating casing and synonyms.
fn parse(raw: &str) -> Option<Self> {
match raw.trim().to_ascii_lowercase().as_str() {
"bug" | "bugs" | "correctness" | "error" => Some(Self::Bug),
"security" | "vulnerability" => Some(Self::Security),
"performance" | "perf" => Some(Self::Performance),
"maintainability" | "quality" | "style" => Some(Self::Maintainability),
_ => None,
}
}
/// Lower-case label used in the review markdown.
pub fn label(self) -> &'static str {
match self {
Self::Bug => "bug",
Self::Security => "security",
Self::Performance => "performance",
Self::Maintainability => "maintainability",
}
}
}
/// Reads the side the model asked for. An unreadable value is ignored instead of
/// failing the whole review: the side is then resolved from the changed lines.
fn deserialize_side<'de, D>(deserializer: D) -> Result<Option<ReviewSide>, D::Error>
@@ -62,6 +104,20 @@ where
.and_then(ReviewSide::parse))
}
/// Reads the severity the model asked for, ignoring an unreadable value: the
/// review is then reported as [`ReviewSeverity::Maintainability`].
fn deserialize_severity<'de, D>(deserializer: D) -> Result<Option<ReviewSeverity>, D::Error>
where
D: Deserializer<'de>,
{
let raw = Option::<serde_json::Value>::deserialize(deserializer)?;
Ok(raw
.as_ref()
.and_then(serde_json::Value::as_str)
.and_then(ReviewSeverity::parse))
}
#[derive(Clone)]
pub struct Bot {
bot_name: String,
+307 -9
View File
@@ -1,12 +1,15 @@
use std::str::FromStr;
use tracing::{info, instrument, warn};
use crate::{
bot::{ReviewResult, ReviewSide},
bot::{ReviewItem, ReviewResult, ReviewSeverity, ReviewSide},
consts::{BOT_PROCESS_MSG, REVIEW_PROMPT, SANDBOX_SYSTEM_PROMPT},
gitea::{GiteaAPI, PullRequestFile, ReviewPayload},
metrics,
open_router::{OpenRouterClient, Tool},
sandbox::{Sandbox, SandboxConfig, agent},
text::excerpt,
};
#[instrument(skip(gitea_api, open_router_client, sandbox_config, tools, review_payload))]
@@ -50,6 +53,7 @@ pub async fn exec_review(
};
let mut changed_lines = parse_changed_lines(&git_diff);
drop_generated_files(&mut changed_lines);
resolve_filenames(&mut changed_lines, &files);
let changes = format_changes(&files, &changed_lines);
@@ -59,7 +63,7 @@ pub async fn exec_review(
.replace("{comment}", &review_payload.comment.body)
.replace("{changes}", &changes);
let (message, cost) = run_sandboxed_review(
let (mut review_result, cost) = run_sandboxed_review(
gitea_api,
open_router_client,
sandbox_config,
@@ -69,7 +73,6 @@ pub async fn exec_review(
)
.await?;
let mut review_result = serde_json::from_str::<ReviewResult>(&message)?;
resolve_review_sides(&mut review_result, &changed_lines);
review_result.cost = cost;
@@ -112,6 +115,10 @@ pub async fn exec_review(
/// Runs the review inside a sandbox container, letting the model explore the
/// repository with tools before answering.
///
/// The answer of the model is parsed by [`ReviewResult::from_str`], which the
/// agent loop enforces: an answer that is not a review is sent back to the model
/// for correction.
async fn run_sandboxed_review(
gitea_api: &GiteaAPI,
open_router_client: &OpenRouterClient,
@@ -119,12 +126,10 @@ async fn run_sandboxed_review(
tools: Vec<Tool>,
review_payload: &ReviewPayload,
bot_request: &str,
) -> anyhow::Result<(String, Option<f64>)> {
let repo_url = gitea_api.repo_clone_url(&review_payload.repository.full_name);
) -> anyhow::Result<(ReviewResult, Option<f64>)> {
let sandbox = Sandbox::create(
&sandbox_config.runtime,
&repo_url,
&review_payload.repository.clone_url,
gitea_api.token(),
review_payload.pull_request.number,
)
@@ -151,7 +156,7 @@ async fn run_sandboxed_review(
"Sandboxed review finished"
);
Ok((result.message, result.cost))
Ok((result.answer, result.cost))
}
fn review_result_to_markdown(review_result: &ReviewResult) -> String {
@@ -166,6 +171,12 @@ fn review_result_to_markdown(review_result: &ReviewResult) -> String {
review_result.reviews.len()
));
let breakdown = severity_breakdown(&review_result.reviews);
if !breakdown.is_empty() {
md.push_str(&breakdown);
md.push('\n');
}
if !review_result.comment.is_empty() {
md.push_str("\n---\n\n");
md.push_str("### Summary\n\n");
@@ -182,6 +193,30 @@ fn review_result_to_markdown(review_result: &ReviewResult) -> String {
md
}
/// Counts the reviews per severity, most severe first.
///
/// A review whose severity the model omitted or wrote unreadably is counted as
/// [`ReviewSeverity::Maintainability`], the same fallback used when posting it.
fn severity_breakdown(reviews: &[ReviewItem]) -> String {
[
ReviewSeverity::Bug,
ReviewSeverity::Security,
ReviewSeverity::Performance,
ReviewSeverity::Maintainability,
]
.into_iter()
.filter_map(|severity| {
let count = reviews
.iter()
.filter(|review| review.severity.unwrap_or(ReviewSeverity::Maintainability) == severity)
.count();
(count > 0).then(|| format!("- {} {}", count, severity.label()))
})
.collect::<Vec<_>>()
.join("\n")
}
/// The lines a pull request changed, per file.
///
/// Line numbers are the ones Gitea expects to place a review comment:
@@ -380,18 +415,61 @@ fn resolve_filenames(changed_lines: &mut ChangedLines, files: &[PullRequestFile]
}
}
/// Basenames of generated files that are never reviewed.
///
/// Their diffs are machine-written dependency churn: they run to thousands of
/// lines, flood the prompt with line numbers and drown the code the model should
/// look at. A lockfile is also never a place where a review comment belongs.
const IGNORED_FILE_NAMES: [&str; 16] = [
"Cargo.lock",
"package-lock.json",
"npm-shrinkwrap.json",
"yarn.lock",
"pnpm-lock.yaml",
"bun.lock",
"bun.lockb",
"composer.lock",
"Gemfile.lock",
"poetry.lock",
"uv.lock",
"Pipfile.lock",
"go.sum",
"packages.lock.json",
"flake.lock",
"pubspec.lock",
];
/// Whether a changed path is a generated file that is never reviewed.
///
/// The comparison is on the basename, so a lockfile nested in a workspace (for
/// example `crates/foo/Cargo.lock`) is matched too.
fn is_ignored(filename: &str) -> bool {
let basename = filename.rsplit('/').next().unwrap_or(filename);
IGNORED_FILE_NAMES.contains(&basename)
}
/// Drops the generated files from the changed lines.
///
/// Removing them here keeps the prompt free of their line numbers, and also makes
/// [`resolve_review_sides`] reject any review the model anchors on one of them.
fn drop_generated_files(changed_lines: &mut ChangedLines) {
changed_lines.retain(|file| !is_ignored(&file.filename));
}
/// Renders the changes for the model: the files the pull request touches, then
/// the lines to review per file.
fn format_changes(files: &[PullRequestFile], changed_lines: &ChangedLines) -> String {
let mut sections = Vec::new();
if !files.is_empty() {
let described = files
.iter()
.filter(|file| !is_ignored(&file.filename))
.map(describe_file)
.collect::<Vec<_>>()
.join(", ");
if !described.is_empty() {
sections.push(format!("Files changed by the pull request: {described}"));
}
@@ -452,6 +530,61 @@ fn format_line_numbers(lines: &[u64]) -> String {
.join(", ")
}
/// Number of characters of a model answer kept in the logs when it cannot be
/// parsed.
const MAX_LOGGED_ANSWER: usize = 500;
impl FromStr for ReviewResult {
type Err = anyhow::Error;
/// Parses the review the model answered with.
///
/// This is the contract the agent loop enforces: a rejected answer is sent
/// back to the model, with the reason, so that it can correct itself.
///
/// The contract is a raw JSON object, but models sometimes wrap it in a
/// markdown code fence or surround it with a sentence: the object is then
/// extracted from the answer before failing, and the answer is logged so a
/// breach of the contract can be diagnosed.
fn from_str(message: &str) -> Result<Self, Self::Err> {
let error = match serde_json::from_str::<Self>(message) {
Ok(review_result) => return Ok(review_result),
Err(error) => error,
};
// A markdown code fence or a sentence around the object is tolerated, with
// a warning: the contract asks for a raw JSON object.
if let Some(json) = json_object(message)
&& let Ok(review_result) = serde_json::from_str::<Self>(json)
{
warn!(
"Model answer is not a raw JSON object, it was extracted from the surrounding text"
);
return Ok(review_result);
}
// The reason of the rejection is logged along with the answer: without it,
// a broken answer is impossible to diagnose.
warn!(
answer = %excerpt(message, MAX_LOGGED_ANSWER),
reason = %error,
"Model answer is not the expected JSON"
);
anyhow::bail!("the answer is not valid JSON: {error}")
}
}
/// Returns the outermost `{...}` of an answer, which ignores a markdown code
/// fence or any text around it.
fn json_object(message: &str) -> Option<&str> {
let start = message.find('{')?;
let end = message.rfind('}')?;
(start < end).then(|| &message[start..=end])
}
/// Resolves the side each review is anchored on and drops the reviews that do
/// not match a line the pull request changes.
///
@@ -605,6 +738,7 @@ mod tests {
filename: String::from(filename),
line,
side,
severity: None,
message: String::from("message"),
}
}
@@ -738,6 +872,56 @@ mod tests {
assert_eq!(format_changes(&[], &changed_lines), expected);
}
#[test]
fn generated_lockfiles_are_ignored() {
assert!(is_ignored("Cargo.lock"));
assert!(is_ignored("crates/herald-server/Cargo.lock"));
assert!(is_ignored("package-lock.json"));
assert!(is_ignored("web/yarn.lock"));
assert!(is_ignored("go.sum"));
assert!(!is_ignored("src/main.rs"));
assert!(!is_ignored("Cargo.toml"));
assert!(!is_ignored("docs/lockfiles.md"));
}
#[test]
fn generated_files_are_dropped_from_the_changed_lines() {
const DIFF_WITH_LOCKFILE: &str = concat!(
"diff --git a/Cargo.lock b/Cargo.lock\n",
"--- a/Cargo.lock\n",
"+++ b/Cargo.lock\n",
"@@ -1,1 +1,2 @@\n",
" [[package]]\n",
"+name = \"x\"\n",
"diff --git a/src/foo.rs b/src/foo.rs\n",
"--- a/src/foo.rs\n",
"+++ b/src/foo.rs\n",
"@@ -1,1 +1,2 @@\n",
" fn a() {}\n",
"+fn b() {}\n",
);
let mut changed_lines = parse_changed_lines(DIFF_WITH_LOCKFILE);
drop_generated_files(&mut changed_lines);
assert_eq!(format_changed_lines(&changed_lines), "src/foo.rs: added 2");
}
#[test]
fn a_generated_file_is_not_described_to_the_model() {
let files = vec![
pull_request_file("Cargo.lock", None, "modified"),
pull_request_file("src/foo.rs", None, "modified"),
];
let changed_lines = parse_changed_lines(DIFF);
let changes = format_changes(&files, &changed_lines);
assert!(!changes.contains("Cargo.lock"));
assert!(changes.contains("src/foo.rs (modified)"));
}
#[test]
fn a_renamed_file_is_described_with_its_previous_path() {
let file = pull_request_file("src/new.rs", Some("src/old.rs"), "renamed");
@@ -824,6 +1008,45 @@ mod tests {
assert_eq!(review_result.reviews[0].side, Some(ReviewSide::Removed));
}
#[test]
fn a_raw_answer_is_parsed() {
let answer = r#"{"reviews": [], "comment": "ok"}"#;
assert_eq!(answer.parse::<ReviewResult>().unwrap().comment, "ok");
}
#[test]
fn a_fenced_answer_is_extracted() {
let answer = concat!(
"Voici ma review :\n",
"```json\n",
"{\"reviews\": [], \"comment\": \"rien à signaler\"}\n",
"```\n"
);
assert_eq!(
answer.parse::<ReviewResult>().unwrap().comment,
"rien à signaler"
);
}
#[test]
fn a_sentence_around_the_object_is_ignored() {
let answer = r#"Rien à signaler. {"reviews": [], "comment": "ok"} Bonne journée !"#;
assert_eq!(answer.parse::<ReviewResult>().unwrap().comment, "ok");
}
#[test]
fn an_answer_without_json_is_rejected() {
assert!("Je n'ai rien relevé.".parse::<ReviewResult>().is_err());
}
#[test]
fn an_answer_that_is_an_object_but_not_a_review_is_rejected() {
assert!(r#"{"message": "LGTM"}"#.parse::<ReviewResult>().is_err());
}
#[test]
fn odd_sides_from_the_model_are_tolerated() {
let changed_lines = parse_changed_lines(DIFF);
@@ -860,4 +1083,79 @@ mod tests {
]
);
}
#[test]
fn severities_are_read_from_the_model() {
let result: ReviewResult = serde_json::from_str(
r#"{
"reviews": [
{ "filename": "a", "line": 1, "severity": "Bug", "message": "x" },
{ "filename": "b", "line": 2, "severity": "SECURITY", "message": "x" },
{ "filename": "c", "line": 3, "severity": "perf", "message": "x" },
{ "filename": "d", "line": 4, "severity": "banana", "message": "x" }
],
"comment": ""
}"#,
)
.unwrap();
let severities = result
.reviews
.iter()
.map(|review| review.severity)
.collect::<Vec<_>>();
assert_eq!(
severities,
vec![
Some(ReviewSeverity::Bug),
Some(ReviewSeverity::Security),
Some(ReviewSeverity::Performance),
None,
]
);
}
#[test]
fn the_breakdown_counts_severities_most_severe_first() {
let reviews = vec![
ReviewItem {
severity: Some(ReviewSeverity::Maintainability),
..review("a", Some(1), None)
},
ReviewItem {
severity: Some(ReviewSeverity::Bug),
..review("b", Some(2), None)
},
ReviewItem {
severity: Some(ReviewSeverity::Bug),
..review("c", Some(3), None)
},
// A severity the model left out counts as maintainability.
review("d", Some(4), None),
];
assert_eq!(severity_breakdown(&reviews), "- 2 bug\n- 2 maintainability");
}
#[test]
fn the_markdown_breaks_the_issues_down_by_severity() {
let mut result = review_result(vec![
ReviewItem {
severity: Some(ReviewSeverity::Bug),
..review("a", Some(1), None)
},
ReviewItem {
severity: Some(ReviewSeverity::Performance),
..review("b", Some(2), None)
},
]);
result.comment = String::from("Le découpage en crates est propre.");
let markdown = review_result_to_markdown(&result);
assert!(markdown.contains("- 1 bug"));
assert!(markdown.contains("- 1 performance"));
assert!(markdown.contains("Le découpage en crates est propre."));
}
}
+42 -18
View File
@@ -9,47 +9,71 @@ pub const BOT_PROCESS_MSG: &str = "
";
pub const SANDBOX_SYSTEM_PROMPT: &str = "
You are a senior software engineer reviewing a pull request.
You are a senior software engineer reviewing a pull request inside an
isolated sandbox.
The repository is checked out in your working directory. Use the provided
tools (ls, read_file, grep, find) to explore the code and gather the context
you need before answering. Paths are relative to the repository root.
The repository is checked out in your working directory. Explore it with the
provided read-only tools (ls, file_size, read_file, grep, find); paths are
relative to the repository root. Every line you read is prefixed with its
absolute line number: that is the number you must cite to anchor a comment.
When you have enough information, answer with the requested JSON only.
Read before you assert: a review anchored on a line you did not read is
worthless, so never comment on code you have not seen. Gather enough context
to be confident, but do not re-read what you already have.
When you answer, send the requested JSON only: a raw JSON object, no markdown
code fence, nothing before or after it.
";
pub const REVIEW_PROMPT: &str = "
You are a senior software engineer reviewing code changes.
You are a senior software engineer reviewing a pull request.
Check good practices and code quality.
Judge the changes for correctness, security, resource use and
maintainability. Report real problems; do not invent issues, and do not
report pure formatting a formatter would fix.
Be exhaustive: one review per distinct issue, and cover every changed file
that has something to report. Do not stop at the first few findings, and do
not merge several issues into a single review.
This is the pull request subject: \"{subject}\"
This is the user comment: \"{comment}\"
If the user asks about something precise, address that first.
The pull request changes these files and lines:
{changes}
`added` line numbers refer to the new version of the file, `removed` line
numbers to the old version, as they appear in the diff.
The code is not provided. Read the files you need with the available tools
before answering.
The code is not provided: read the files you need with the available tools
before answering. Review only the listed lines.
`added` line numbers refer to the new version of the file, which is what your
working directory contains now. `removed` line numbers refer to the old
version, which is not in your working directory: you cannot read a removed
line, only the code around where it used to be.
Return your feedback, in french, with only this json format, reviews must contain each review
All fields are mandatory.
(filename field must contain the full path with extension; line must be one of the
listed line numbers for that file, and side must be \"added\" when the line comes
from the `added` list or \"removed\" when it comes from the `removed` list)
and comment must contain a final summary:
Every review must anchor on one of the listed line numbers:
- filename: the full path exactly as listed above,
- line: one of the numbers listed for that file,
- side: \"added\" for a number from the `added` list, \"removed\" for one from
the `removed` list,
- severity: exactly one of \"bug\", \"security\", \"performance\" or
\"maintainability\" — a bug is wrong behaviour, security a vulnerability,
performance a resource problem, maintainability everything else.
Answer in french, with the raw json object only: no markdown code fence, no
text before or after it. All fields are mandatory. The `comment` field must
hold a short summary that lists the issues, and also what the pull request
does well: the author should get the compliments too.
{
\"reviews\": [
{
\"filename\": \"\",
\"line\": ,
\"line\": 0,
\"side\": \"\",
\"severity\": \"\",
\"message\": \"\"
}
],
-4
View File
@@ -12,7 +12,6 @@ pub struct EnvConfig {
pub gitea_token: String,
pub gitea_timeout: u64,
pub metrics_bind_addr: Option<String>,
pub container_runtime: String,
pub sandbox_max_iterations: usize,
}
@@ -27,8 +26,6 @@ pub fn load_config() -> anyhow::Result<EnvConfig> {
let gitea_token = try_get_env("GITEA_TOKEN")?;
let gitea_timeout = try_get_env("GITEA_TIMEOUT")?.parse()?;
let metrics_bind_addr = std::env::var("METRICS_BIND_ADDR").ok();
let container_runtime =
std::env::var("CONTAINER_RUNTIME").unwrap_or_else(|_| "docker".to_string());
let sandbox_max_iterations = std::env::var("SANDBOX_MAX_ITERATIONS")
.ok()
.and_then(|value| value.parse().ok())
@@ -45,7 +42,6 @@ pub fn load_config() -> anyhow::Result<EnvConfig> {
gitea_token,
gitea_timeout,
metrics_bind_addr,
container_runtime,
sandbox_max_iterations,
})
}
+21 -16
View File
@@ -8,7 +8,7 @@ use tokio_util::io::StreamReader;
use tracing::{instrument, warn};
use crate::{
bot::{ReviewResult, ReviewSide},
bot::{ReviewResult, ReviewSeverity, ReviewSide},
consts::MAX_DIFF_SIZE,
errors::AppError,
};
@@ -49,15 +49,6 @@ impl GiteaAPI {
&self.token
}
/// HTTPS clone URL for a repository, suitable for `git clone`.
pub fn repo_clone_url(&self, full_name: &str) -> String {
format!(
"{}/{}.git",
self.base_url.trim_end_matches('/'),
full_name.trim_start_matches('/')
)
}
#[instrument(skip(self))]
pub async fn get_authorized_user(&self) -> anyhow::Result<User> {
let url = format!("{}/api/v1/user", self.base_url);
@@ -231,7 +222,11 @@ impl GiteaAPI {
.filter_map(|review| {
let line = review.line?;
let path = review.filename.clone();
let body = review.message.clone();
let severity = review
.severity
.unwrap_or(ReviewSeverity::Maintainability)
.label();
let body = format!("**[{severity}]** {}", review.message);
// A line removed by the pull request only exists in the old
// version of the file, so it is anchored with `old_position`.
@@ -333,6 +328,7 @@ pub struct User {
#[derive(Deserialize, Debug)]
pub struct Repository {
pub full_name: String,
pub clone_url: String,
}
/// A file changed by a pull request, as reported by the API.
@@ -390,7 +386,8 @@ mod tests {
"title": "My PR"
},
"repository": {
"full_name": "owner/repo"
"full_name": "owner/repo",
"clone_url": "https://github.com/owner/repo.git"
},
"comment": {
"id": 7,
@@ -453,7 +450,8 @@ mod tests {
"title": "My PR"
},
"repository": {
"full_name": "owner/repo"
"full_name": "owner/repo",
"clone_url": "https://github.com/owner/repo.git"
},
"comment": {
"id": 1,
@@ -485,7 +483,8 @@ mod tests {
"title": "My PR"
},
"repository": {
"full_name": "owner/repo"
"full_name": "owner/repo",
"clone_url": "https://github.com/owner/repo.git"
},
"comment": {
"id": 12,
@@ -501,6 +500,10 @@ mod tests {
assert_eq!(payload.action, "created");
assert_eq!(payload.comment.id, 12);
assert_eq!(payload.comment.body, "Needs work");
assert_eq!(
payload.repository.clone_url,
"https://github.com/owner/repo.git"
);
}
#[test]
@@ -521,7 +524,8 @@ mod tests {
"title": "My PR"
},
"repository": {
"full_name": "owner/repo"
"full_name": "owner/repo",
"clone_url": "https://github.com/owner/repo.git"
},
"comment": {
"id": 1,
@@ -548,7 +552,8 @@ mod tests {
"title": "My PR"
},
"repository": {
"full_name": "owner/repo"
"full_name": "owner/repo",
"clone_url": "https://github.com/owner/repo.git"
},
"comment": {
"id": 1,
+30 -4
View File
@@ -1,3 +1,5 @@
use std::time::Duration;
use crate::{
bot::Bot,
gitea::{GiteaAPI, WebhookType},
@@ -23,6 +25,13 @@ mod metrics;
mod open_router;
mod sandbox;
mod state;
mod text;
/// Délai laissé aux reviews en cours et aux serveurs pour s'arrêter proprement.
///
/// Sans lui, une review prise dans une sandbox récalcitrante garderait le processus
/// en vie jusqu'à ce que le superviseur le tue.
const SHUTDOWN_TIMEOUT: Duration = Duration::from_secs(60);
fn main() -> anyhow::Result<()> {
dotenv().ok();
@@ -79,14 +88,14 @@ async fn run() -> anyhow::Result<()> {
let shutdown = CancellationToken::new();
let sandbox = SandboxConfig {
runtime: devcontainer_rs::ContainerRuntime::new(config.container_runtime.clone()),
runtime: devcontainer_rs::ContainerRuntime::connect()?,
max_iterations: config.sandbox_max_iterations,
};
if !sandbox.runtime.available().await {
warn!(
runtime = sandbox.runtime.program(),
"Container runtime is not available, every review will fail"
endpoint = sandbox.runtime.endpoint(),
"Container daemon is not reachable, every review will fail"
);
}
@@ -119,11 +128,28 @@ async fn run() -> anyhow::Result<()> {
anyhow::Ok(())
};
let shutdown_deadline = async {
shutdown.cancelled().await;
tokio::time::sleep(SHUTDOWN_TIMEOUT).await;
};
tokio::select! {
result = async {
tokio::try_join!(
bot.start(rx, shutdown.clone()),
api::start(app_state, shutdown.clone()),
signal
)?;
)
} => {
result?;
}
() = shutdown_deadline => {
warn!(
timeout = ?SHUTDOWN_TIMEOUT,
"Shutdown did not finish in time, exiting anyway"
);
}
}
info!("Shutdown complete");
+40 -8
View File
@@ -17,8 +17,24 @@ use tracing::instrument;
/// OpenRouter API root, version prefix included.
const BASE_URL: &str = "https://openrouter.ai/api/v1";
/// The model decides on its own which tool to call.
const TOOL_CHOICE_AUTO: &str = "auto";
/// What the model is allowed to do on a given turn.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum ToolChoice {
/// The model decides whether to call a tool.
Auto,
/// The model must answer, without calling any tool. The tools stay declared,
/// so the conversation remains the same shape as on the other turns.
None,
}
impl ToolChoice {
fn as_str(self) -> &'static str {
match self {
Self::Auto => "auto",
Self::None => "none",
}
}
}
/// Result of a completion that may contain tool calls.
pub struct ToolChatResult {
@@ -250,13 +266,18 @@ impl OpenRouterClient {
/// Sends a conversation with tool definitions and returns either a final
/// message or the tool calls requested by the model.
///
/// The conversation is borrowed rather than taken by value: the caller keeps
/// appending to it between iterations, and a copy per iteration would be pure
/// waste.
#[instrument(skip(self, messages, tools), err)]
pub async fn chat_with_tools(
&self,
messages: Vec<Message>,
tools: Vec<Tool>,
messages: &[Message],
tools: &[Tool],
tool_choice: ToolChoice,
) -> anyhow::Result<ToolChatResult> {
let response = self.complete(&messages, &tools).await?;
let response = self.complete(messages, tools, tool_choice).await?;
let cost = response.usage.and_then(|usage| usage.cost);
let message = response
@@ -273,13 +294,18 @@ impl OpenRouterClient {
})
}
async fn complete(&self, messages: &[Message], tools: &[Tool]) -> anyhow::Result<ChatResponse> {
async fn complete(
&self,
messages: &[Message],
tools: &[Tool],
tool_choice: ToolChoice,
) -> anyhow::Result<ChatResponse> {
let request = ChatRequest {
model: &self.model,
messages,
reasoning: Reasoning { enabled: true },
tools,
tool_choice: TOOL_CHOICE_AUTO,
tool_choice: tool_choice.as_str(),
};
let response = self
@@ -364,7 +390,7 @@ mod tests {
messages: &messages,
reasoning: Reasoning { enabled: true },
tools: &tools,
tool_choice: TOOL_CHOICE_AUTO,
tool_choice: ToolChoice::Auto.as_str(),
})
.unwrap();
@@ -375,6 +401,12 @@ mod tests {
assert_eq!(request["messages"][0]["role"], "user");
}
#[test]
fn a_forced_answer_turn_disables_the_tools() {
assert_eq!(ToolChoice::None.as_str(), "none");
assert_eq!(ToolChoice::Auto.as_str(), "auto");
}
#[test]
fn response_parses_tool_calls_and_cost() {
let response: ChatResponse = serde_json::from_value(json!({
+196 -17
View File
@@ -5,18 +5,58 @@
//! back, until the model produces a final message or the iteration budget is
//! exhausted.
use std::str::FromStr;
use std::time::Instant;
use anyhow::Context;
use serde_json::Value;
use tracing::{debug, warn};
use tracing::{info, warn};
use crate::{
open_router::{Message, OpenRouterClient, Role, Tool, ToolCall},
open_router::{Message, OpenRouterClient, Role, Tool, ToolCall, ToolChoice},
sandbox::{Sandbox, tools},
text::{excerpt, truncate_bytes},
};
/// Number of characters of the arguments of a tool call kept in the logs.
const MAX_LOGGED_ARGUMENTS: usize = 200;
/// Number of characters of a tool result kept in the logs.
///
/// Sizes alone make a broken tool invisible: a command that fails returns a short
/// `error: …` instead of the expected content, which is exactly what this excerpt
/// makes obvious.
const MAX_LOGGED_OUTPUT: usize = 120;
/// Maximum number of bytes of a tool result handed to the model.
///
/// A result stays in the conversation and is re-sent on every following
/// iteration, so an unbounded one (a whole file, a match on every line) inflates
/// the context and the cost of the whole rest of the run — and can overflow the
/// model context window outright.
const MAX_TOOL_OUTPUT_BYTES: usize = 32 * 1024;
/// Asked of the model when its answer does not satisfy the caller's contract.
const RETRY_PROMPT: &str = "
Your answer is not valid: {error}
Answer again with the requested format only: a raw json object, without any
markdown code fence and without any text before or after it.
";
/// Asked of the model on the last turn, in place of one more exploration turn.
///
/// Without it, a model still exploring on its last turn would ask for another
/// tool, and the run would end on the iteration budget with no answer at all.
const FINAL_PROMPT: &str = "
You are out of turns: this is your last one. Answer now, with the requested
format, from what you have already gathered, without calling any tool.
";
/// Final output of an agent run.
pub struct AgentResult {
pub message: String,
pub struct AgentResult<A> {
/// Answer of the model, parsed into the type the caller asked for.
pub answer: A,
pub cost: Option<f64>,
pub iterations: usize,
}
@@ -26,25 +66,64 @@ pub struct AgentResult {
///
/// `tool_definitions` is the set of tools the model may call; it is selected by
/// the caller based on the webhook action (see [`tools::for_webhook`]).
pub async fn run(
///
/// The answer of the model is parsed into `A`, which is how the caller states the
/// format it expects: while [`FromStr`] rejects the answer, the error is sent back
/// to the model so that it can correct itself, which costs an iteration. The
/// parsing happens here because that is where the conversation and the remaining
/// budget are at hand.
pub async fn run<A>(
open_router: &OpenRouterClient,
sandbox: &Sandbox,
tool_definitions: Vec<Tool>,
system_prompt: &str,
user_prompt: &str,
max_iterations: usize,
) -> anyhow::Result<AgentResult> {
) -> anyhow::Result<AgentResult<A>>
where
A: FromStr,
A::Err: std::fmt::Display,
{
let mut messages = vec![
Message::new(Role::System, system_prompt),
Message::new(Role::User, user_prompt),
];
info!(
tools = %tool_definitions
.iter()
.map(|tool| tool.function.name.as_str())
.collect::<Vec<_>>()
.join(", "),
max_iterations,
"Starting tool-calling loop"
);
let mut total_cost = 0.0_f64;
let mut has_cost = false;
let mut last_rejection: Option<String> = None;
for iteration in 1..=max_iterations {
// Le dernier tour n'est plus un tour d'exploration : le modèle doit rendre
// sa réponse, avec ce qu'il a déjà vu.
let last = iteration == max_iterations;
if last {
info!(iteration, "Last turn: asking for the final answer");
messages.push(Message::new(Role::User, FINAL_PROMPT));
}
let started = Instant::now();
let response = open_router
.chat_with_tools(messages.clone(), tool_definitions.clone())
.chat_with_tools(
&messages,
&tool_definitions,
if last {
ToolChoice::None
} else {
ToolChoice::Auto
},
)
.await?;
if let Some(cost) = response.cost {
@@ -52,13 +131,45 @@ pub async fn run(
has_cost = true;
}
if response.tool_calls.is_empty() {
info!(
iteration,
max_iterations,
last_turn = last,
tool_calls = response.tool_calls.len(),
answer_bytes = response.message.as_deref().map_or(0, str::len),
elapsed_ms = started.elapsed().as_millis() as u64,
"Model answered"
);
// Au dernier tour, les outils sont refusés : même si le fournisseur les
// renvoie malgré tout, on ne les exécute pas et on tente la réponse.
if last || response.tool_calls.is_empty() {
let answer = response.message.unwrap_or_default();
match answer.parse::<A>() {
Ok(parsed) => {
return Ok(AgentResult {
message: response.message.unwrap_or_default(),
answer: parsed,
cost: has_cost.then_some(total_cost),
iterations: iteration,
});
}
Err(err) => {
warn!(iteration, %err, "Model answer was rejected, asking for another one");
// Keep the rejected answer in the history, so that the model
// sees what it has to fix.
messages.push(Message::new(Role::Assistant, answer));
messages.push(Message::new(
Role::User,
RETRY_PROMPT.replace("{error}", &err.to_string()),
));
last_rejection = Some(err.to_string());
continue;
}
}
}
messages.push(Message::assistant_with_tool_calls(
response.message.unwrap_or_default(),
@@ -66,28 +177,71 @@ pub async fn run(
));
for call in &response.tool_calls {
debug!(tool = call.name(), "Executing tool call");
let content = execute(sandbox, call).await;
let started = Instant::now();
let (content, truncated) = execute(sandbox, call).await;
info!(
iteration,
tool = call.name(),
arguments = %excerpt(call.arguments_json(), MAX_LOGGED_ARGUMENTS),
output_bytes = content.len(),
truncated,
// Les sauts de ligne casseraient la lisibilité d'une ligne de log.
output = %excerpt(&content, MAX_LOGGED_OUTPUT).replace('\n', " "),
elapsed_ms = started.elapsed().as_millis() as u64,
"Tool call finished"
);
messages.push(Message::tool_response(call.id(), content));
}
}
warn!(max_iterations, "Agent reached the iteration limit");
anyhow::bail!("agent exceeded the maximum number of iterations ({max_iterations})")
warn!(
max_iterations,
"Agent used its last turn without a valid answer"
);
match last_rejection {
Some(error) => anyhow::bail!(
"agent exceeded the maximum number of iterations ({max_iterations}), \
last answer rejected: {error}"
),
None => anyhow::bail!("agent exceeded the maximum number of iterations ({max_iterations})"),
}
}
async fn execute(sandbox: &Sandbox, call: &ToolCall) -> String {
/// Runs a tool call and returns its result for the model, along with whether the
/// result had to be truncated.
async fn execute(sandbox: &Sandbox, call: &ToolCall) -> (String, bool) {
let args = match parse_args(call) {
Ok(args) => args,
Err(err) => return format!("error: {err}"),
Err(err) => return cap_output(format!("error: {err}")),
};
match tools::dispatch(sandbox, call.name(), &args).await {
Ok(output) => output,
Err(err) => format!("error: {err}"),
Ok(output) => cap_output(output),
Err(err) => cap_output(format!("error: {err}")),
}
}
/// Bounds [`MAX_TOOL_OUTPUT_BYTES`] of a tool result, telling the model what was
/// dropped so that it can narrow its request.
fn cap_output(mut output: String) -> (String, bool) {
let total = output.len();
if !truncate_bytes(&mut output, MAX_TOOL_OUTPUT_BYTES) {
return (output, false);
}
let kept = output.len();
output.push_str(&format!(
"\n… output truncated: {total} bytes in total, the first {kept} are shown. \
Narrow the request (path, pattern or line range) to see the rest."
));
(output, true)
}
fn parse_args(call: &ToolCall) -> anyhow::Result<Value> {
let raw = call.arguments_json().trim();
if raw.is_empty() {
@@ -134,4 +288,29 @@ mod tests {
let call = tool_call("ls", "not json");
assert!(parse_args(&call).is_err());
}
#[test]
fn a_small_tool_output_is_kept_as_is() {
let (content, truncated) = cap_output(String::from("src/main.rs"));
assert_eq!(content, "src/main.rs");
assert!(!truncated);
}
#[test]
fn a_large_tool_output_is_truncated_and_told_to_the_model() {
let (content, truncated) = cap_output("a".repeat(MAX_TOOL_OUTPUT_BYTES + 1));
assert!(truncated);
assert!(content.starts_with(&"a".repeat(MAX_TOOL_OUTPUT_BYTES)));
assert!(content.contains("output truncated"));
}
#[test]
fn a_truncated_tool_output_stays_valid_utf8() {
let (content, truncated) = cap_output("é".repeat(MAX_TOOL_OUTPUT_BYTES));
assert!(truncated);
assert!(content.starts_with('é'));
}
}
@@ -0,0 +1,288 @@
//! Le [`Sandbox`] : clone d'une pull request exécuté dans un devcontainer
//! éphémère, et sa configuration.
use std::{
path::{Path, PathBuf},
process::Stdio,
};
use anyhow::Context;
use devcontainer_rs::{Container, ContainerRuntime, ExecOutput};
use tempfile::TempDir;
use tracing::{info, instrument};
/// Devcontainer locations recognized within a repository, in priority order.
const DEVCONTAINER_PATHS: [&str; 2] = [".devcontainer/devcontainer.json", ".devcontainer.json"];
/// Sandbox-related runtime configuration.
#[derive(Clone)]
pub struct SandboxConfig {
/// Client du daemon de containers qui exécute la sandbox.
pub runtime: ContainerRuntime,
/// Maximum number of tool-calling iterations per agent run.
pub max_iterations: usize,
}
/// A cloned repository running inside an ephemeral devcontainer.
pub struct Sandbox {
// Owns the temporary directory; dropping it cleans up the clone.
_workspace: TempDir,
/// Path of the clone, as copied into the container.
repo_dir: PathBuf,
container: Container,
}
impl Sandbox {
/// Clones the pull request head, builds the devcontainer and starts it.
///
/// The clone is PR-aware: it fetches `refs/pull/<number>/head`, which works
/// for both same-repository and forked pull requests.
#[instrument(skip(runtime, token), fields(pr = pull_request_number))]
pub async fn create(
runtime: &ContainerRuntime,
clone_url: &str,
token: &str,
pull_request_number: u64,
) -> anyhow::Result<Self> {
let workspace = tempfile::tempdir().context("failed to create sandbox workspace")?;
let repo_dir = workspace.path().join("repo");
clone_pull_request(clone_url, token, pull_request_number, &repo_dir).await?;
make_readable(&repo_dir).await?;
let devcontainer_path = find_devcontainer(&repo_dir)
.with_context(|| format!("no devcontainer found in `{clone_url}`"))?;
let devcontainer = devcontainer_rs::parse(&devcontainer_path).await?;
info!(image = %devcontainer.image_tag(), "Building and starting sandbox container");
let container = devcontainer.up(runtime, &repo_dir).await?;
let sandbox = Self {
_workspace: workspace,
repo_dir,
container,
};
if let Err(err) = sandbox.check_workspace().await {
let _ = sandbox.container.remove().await;
return Err(err);
}
Ok(sandbox)
}
/// Vérifie que le clone est bien visible dans le container.
///
/// Sans ce contrôle, un workspace vide — par exemple un daemon qui n'a pas pu
/// recevoir le clone — fait échouer chaque outil ; le modèle enchaîne alors les
/// appels ratés jusqu'au budget d'itérations, sans jamais pouvoir reviewer quoi
/// que ce soit.
async fn check_workspace(&self) -> anyhow::Result<()> {
let workspace_folder = self.workspace_folder();
let probe = self
.container
.exec(&["ls", "-A", "--", workspace_folder])
.await
.with_context(|| format!("failed to list `{workspace_folder}` in the sandbox"))?;
if !probe.success() {
let details = self.diagnose_workspace().await;
anyhow::bail!(
"the sandbox cannot list `{workspace_folder}`: {} ({details})",
probe.stderr.trim()
);
}
if probe.stdout.trim().is_empty() {
anyhow::bail!(
"the sandbox workspace `{workspace_folder}` is empty: the container daemon does not see the clone"
);
}
info!(
clone = %self.repo_dir.display(),
workspace = %workspace_folder,
entries = probe.stdout.lines().count(),
"Sandbox workspace is readable"
);
Ok(())
}
/// Rassemble de quoi expliquer un refus d'accès au workspace.
///
/// Un `EACCES` a deux causes possibles, indistinguables dans le message de
/// `ls` : les permissions du clone, ou un confinement du noyau qui bloque
/// l'accès. L'identité de l'utilisateur d'exec et les permissions du point de
/// montage permettent de trancher.
async fn diagnose_workspace(&self) -> String {
let mut details = Vec::new();
if let Ok(output) = self.container.exec(&["id"]).await {
details.push(output.stdout.trim().to_string());
}
if let Ok(output) = self
.container
.exec(&["ls", "-ld", "--", self.workspace_folder()])
.await
&& output.success()
{
details.push(output.stdout.trim().to_string());
}
details.join(", ")
}
/// Executes a command in the container as an argv vector (no shell).
pub async fn exec(&self, cmd: &[&str]) -> anyhow::Result<ExecOutput> {
Ok(self.container.exec(cmd).await?)
}
/// Path of the repository inside the container.
pub fn workspace_folder(&self) -> &str {
self.container.workspace_folder()
}
/// Stops and removes the container. The temporary clone is removed on drop.
pub async fn cleanup(self) -> anyhow::Result<()> {
self.container.remove().await?;
Ok(())
}
}
fn find_devcontainer(repo_dir: &Path) -> Option<PathBuf> {
DEVCONTAINER_PATHS
.iter()
.map(|relative| repo_dir.join(relative))
.find(|candidate| candidate.is_file())
}
async fn clone_pull_request(
repo_url: &str,
token: &str,
pull_request_number: u64,
dest: &Path,
) -> anyhow::Result<()> {
let dest = dest.display().to_string();
run_git(
token,
&[
"clone".to_string(),
"--depth".to_string(),
"1".to_string(),
repo_url.to_string(),
dest.clone(),
],
)
.await?;
run_git(
token,
&[
"-C".to_string(),
dest.clone(),
"fetch".to_string(),
"--depth".to_string(),
"1".to_string(),
"origin".to_string(),
format!("refs/pull/{pull_request_number}/head"),
],
)
.await?;
run_git(
token,
&[
"-C".to_string(),
dest,
"checkout".to_string(),
"FETCH_HEAD".to_string(),
],
)
.await?;
Ok(())
}
/// Rend le clone lisible par les utilisateurs du container sandbox.
///
/// Le container peut ne pas avoir les mêmes uid que Herald (podman rootless
/// mappe les uid à travers des plages subuid), et l'umask de l'opérateur peut être
/// restrictif : sans cela, les outils de la sandbox échouent en `Permission
/// denied` sur des fichiers que Herald vient de cloner lui-même.
async fn make_readable(repo_dir: &Path) -> anyhow::Result<()> {
let output = tokio::process::Command::new("chmod")
.args(["-R", "a+rX"])
.arg(repo_dir)
.stdin(Stdio::null())
.output()
.await
.context("failed to spawn chmod")?;
if !output.status.success() {
anyhow::bail!(
"chmod failed on `{}`: {}",
repo_dir.display(),
String::from_utf8_lossy(&output.stderr).trim()
);
}
Ok(())
}
/// Runs git with the token injected through `http.extraHeader`, keeping the
/// secret out of the process arguments.
async fn run_git(token: &str, args: &[String]) -> anyhow::Result<()> {
let output = tokio::process::Command::new("git")
.args(args)
.env("GIT_CONFIG_COUNT", "1")
.env("GIT_CONFIG_KEY_0", "http.extraHeader")
.env(
"GIT_CONFIG_VALUE_0",
format!("Authorization: token {token}"),
)
.env("GIT_TERMINAL_PROMPT", "0")
.stdin(Stdio::null())
.output()
.await
.context("failed to spawn git")?;
if !output.status.success() {
anyhow::bail!(
"git {} failed: {}",
args.join(" "),
String::from_utf8_lossy(&output.stderr).trim()
);
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn find_devcontainer_prefers_dot_devcontainer_dir() {
let dir = tempfile::tempdir().unwrap();
let nested = dir.path().join(".devcontainer");
std::fs::create_dir(&nested).unwrap();
std::fs::write(nested.join("devcontainer.json"), "{}").unwrap();
std::fs::write(dir.path().join(".devcontainer.json"), "{}").unwrap();
assert_eq!(
find_devcontainer(dir.path()),
Some(nested.join("devcontainer.json"))
);
}
#[test]
fn find_devcontainer_returns_none_when_absent() {
let dir = tempfile::tempdir().unwrap();
assert_eq!(find_devcontainer(dir.path()), None);
}
}
+2 -184
View File
@@ -7,189 +7,7 @@
//! tool-calling loop against OpenRouter.
pub mod agent;
mod instance;
pub mod tools;
use std::{
path::{Path, PathBuf},
process::Stdio,
};
use anyhow::Context;
use devcontainer_rs::{Container, ContainerRuntime, ExecOutput};
use tempfile::TempDir;
use tracing::{info, instrument};
/// Devcontainer locations recognized within a repository, in priority order.
const DEVCONTAINER_PATHS: [&str; 2] = [".devcontainer/devcontainer.json", ".devcontainer.json"];
/// Sandbox-related runtime configuration.
#[derive(Clone)]
pub struct SandboxConfig {
/// Container runtime binary to drive (e.g. `docker`, `podman`).
pub runtime: ContainerRuntime,
/// Maximum number of tool-calling iterations per agent run.
pub max_iterations: usize,
}
/// A cloned repository running inside an ephemeral devcontainer.
pub struct Sandbox {
// Owns the temporary directory; dropping it cleans up the clone.
_workspace: TempDir,
container: Container,
}
impl Sandbox {
/// Clones the pull request head, builds the devcontainer and starts it.
///
/// The clone is PR-aware: it fetches `refs/pull/<number>/head`, which works
/// for both same-repository and forked pull requests.
#[instrument(skip(runtime, token), fields(pr = pull_request_number))]
pub async fn create(
runtime: &ContainerRuntime,
repo_url: &str,
token: &str,
pull_request_number: u64,
) -> anyhow::Result<Self> {
let workspace = tempfile::tempdir().context("failed to create sandbox workspace")?;
let repo_dir = workspace.path().join("repo");
clone_pull_request(repo_url, token, pull_request_number, &repo_dir).await?;
let devcontainer_path = find_devcontainer(&repo_dir)
.with_context(|| format!("no devcontainer found in `{repo_url}`"))?;
let devcontainer = devcontainer_rs::parse(&devcontainer_path).await?;
info!(image = %devcontainer.image_tag(), "Building and starting sandbox container");
let container = devcontainer.up(runtime, &repo_dir).await?;
Ok(Self {
_workspace: workspace,
container,
})
}
/// Executes a command in the container as an argv vector (no shell).
pub async fn exec(&self, cmd: &[&str]) -> anyhow::Result<ExecOutput> {
Ok(self.container.exec(cmd).await?)
}
/// Path of the repository inside the container.
pub fn workspace_folder(&self) -> &str {
self.container.workspace_folder()
}
/// Stops and removes the container. The temporary clone is removed on drop.
pub async fn cleanup(self) -> anyhow::Result<()> {
self.container.remove().await?;
Ok(())
}
}
fn find_devcontainer(repo_dir: &Path) -> Option<PathBuf> {
DEVCONTAINER_PATHS
.iter()
.map(|relative| repo_dir.join(relative))
.find(|candidate| candidate.is_file())
}
async fn clone_pull_request(
repo_url: &str,
token: &str,
pull_request_number: u64,
dest: &Path,
) -> anyhow::Result<()> {
let dest = dest.display().to_string();
run_git(
token,
&[
"clone".to_string(),
"--depth".to_string(),
"1".to_string(),
repo_url.to_string(),
dest.clone(),
],
)
.await?;
run_git(
token,
&[
"-C".to_string(),
dest.clone(),
"fetch".to_string(),
"--depth".to_string(),
"1".to_string(),
"origin".to_string(),
format!("refs/pull/{pull_request_number}/head"),
],
)
.await?;
run_git(
token,
&[
"-C".to_string(),
dest,
"checkout".to_string(),
"FETCH_HEAD".to_string(),
],
)
.await?;
Ok(())
}
/// Runs git with the token injected through `http.extraHeader`, keeping the
/// secret out of the process arguments.
async fn run_git(token: &str, args: &[String]) -> anyhow::Result<()> {
let output = tokio::process::Command::new("git")
.args(args)
.env("GIT_CONFIG_COUNT", "1")
.env("GIT_CONFIG_KEY_0", "http.extraHeader")
.env(
"GIT_CONFIG_VALUE_0",
format!("Authorization: token {token}"),
)
.env("GIT_TERMINAL_PROMPT", "0")
.stdin(Stdio::null())
.output()
.await
.context("failed to spawn git")?;
if !output.status.success() {
anyhow::bail!(
"git {} failed: {}",
args.join(" "),
String::from_utf8_lossy(&output.stderr).trim()
);
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn find_devcontainer_prefers_dot_devcontainer_dir() {
let dir = tempfile::tempdir().unwrap();
let nested = dir.path().join(".devcontainer");
std::fs::create_dir(&nested).unwrap();
std::fs::write(nested.join("devcontainer.json"), "{}").unwrap();
std::fs::write(dir.path().join(".devcontainer.json"), "{}").unwrap();
assert_eq!(
find_devcontainer(dir.path()),
Some(nested.join("devcontainer.json"))
);
}
#[test]
fn find_devcontainer_returns_none_when_absent() {
let dir = tempfile::tempdir().unwrap();
assert_eq!(find_devcontainer(dir.path()), None);
}
}
pub use instance::{Sandbox, SandboxConfig};
+63 -6
View File
@@ -41,9 +41,23 @@ fn review_tools() -> Vec<Tool> {
}
}),
),
Tool::new(
"file_size",
"Get the size of a file inside the repository in bytes.",
json!({
"type": "object",
"properties": {
"path": {
"type": "string",
"description": "File path relative to the repository root."
}
}
}),
),
Tool::new(
"read_file",
"Read the content of a text file inside the repository.",
"Read the content of a text file inside the repository. Every line is \
prefixed with its absolute line number, even when only a range is read.",
json!({
"type": "object",
"properties": {
@@ -110,12 +124,19 @@ pub async fn dispatch(sandbox: &Sandbox, name: &str, args: &Value) -> anyhow::Re
match name {
"ls" => ls(sandbox, args).await,
"read_file" => read_file(sandbox, args).await,
"file_size" => file_size(sandbox, args).await,
"grep" => grep(sandbox, args).await,
"find" => find(sandbox, args).await,
other => bail!("unknown tool `{other}`"),
}
}
async fn file_size(sandbox: &Sandbox, args: &Value) -> anyhow::Result<String> {
let path = resolve(sandbox, required_str(args, "path")?)?;
let size = sandbox.exec(&["du", "-b", "--", &path]).await?;
into_stdout(size)
}
async fn ls(sandbox: &Sandbox, args: &Value) -> anyhow::Result<String> {
let path = resolve(sandbox, optional_str(args, "path").unwrap_or("."))?;
let output = sandbox.exec(&["ls", "-la", "--", &path]).await?;
@@ -128,18 +149,36 @@ async fn read_file(sandbox: &Sandbox, args: &Value) -> anyhow::Result<String> {
let start = args.get("start_line").and_then(Value::as_u64);
let end = args.get("end_line").and_then(Value::as_u64);
let output = if start.is_none() && end.is_none() {
sandbox.exec(&["cat", "--", &path]).await?
let (first_line, output) = if start.is_none() && end.is_none() {
(1, sandbox.exec(&["cat", "--", &path]).await?)
} else {
let start = start.unwrap_or(1);
let end = end
.map(|line| line.to_string())
.unwrap_or_else(|| "$".to_string());
let range = format!("{start},{end}p");
sandbox.exec(&["sed", "-n", &range, "--", &path]).await?
(
start,
sandbox.exec(&["sed", "-n", &range, "--", &path]).await?,
)
};
into_stdout(output)
Ok(number_lines(&into_stdout(output)?, first_line))
}
/// Préfixe chaque ligne par son numéro.
///
/// Le modèle doit citer une ligne précise pour ancrer son commentaire : sans
/// numéros, il les compte lui-même et se décale de quelques lignes, ce qui place le
/// commentaire à côté du code visé.
fn number_lines(content: &str, first_line: u64) -> String {
content
.lines()
.enumerate()
.map(|(offset, line)| format!("{}:{line}", first_line + offset as u64))
.collect::<Vec<_>>()
.join("\n")
}
async fn grep(sandbox: &Sandbox, args: &Value) -> anyhow::Result<String> {
@@ -220,6 +259,7 @@ mod tests {
},
repository: Repository {
full_name: "owner/repo".to_string(),
clone_url: "https://github.com/owner/repo.git".to_string(),
},
comment: Comment {
id: 1,
@@ -235,7 +275,7 @@ mod tests {
.map(|tool| tool.function.name)
.collect();
assert_eq!(names, vec!["ls", "read_file", "grep", "find"]);
assert_eq!(names, vec!["ls", "file_size", "read_file", "grep", "find"]);
}
#[test]
@@ -243,4 +283,21 @@ mod tests {
let err = required_str(&json!({}), "path").unwrap_err();
assert!(err.to_string().contains("path"));
}
#[test]
fn lines_are_numbered_from_the_first_one() {
assert_eq!(number_lines("a\nb\n", 1), "1:a\n2:b");
}
#[test]
fn a_range_keeps_the_absolute_line_numbers() {
// Un extrait lu à partir de la ligne 12 doit garder la numérotation du
// fichier : sinon le modèle citerait des lignes décalées.
assert_eq!(number_lines("x\ny", 12), "12:x\n13:y");
}
#[test]
fn an_empty_read_stays_empty() {
assert_eq!(number_lines("", 1), "");
}
}
+81
View File
@@ -0,0 +1,81 @@
//! Small text helpers shared by the modules that log what the model answered and
//! bound what the tools return to it.
/// First `limit` characters of `text`, for logs.
///
/// Cuts on character boundaries, so the excerpt stays valid UTF-8, and marks a
/// truncation with an ellipsis.
pub fn excerpt(text: &str, limit: usize) -> String {
let mut chars = text.chars();
let excerpt = chars.by_ref().take(limit).collect::<String>();
if chars.next().is_some() {
return format!("{excerpt}…");
}
excerpt
}
/// Truncates `text` in place to at most `limit` bytes, cutting on a character
/// boundary so the result stays valid UTF-8.
///
/// Returns `true` when something was dropped.
pub fn truncate_bytes(text: &mut String, limit: usize) -> bool {
if text.len() <= limit {
return false;
}
let mut end = limit;
while !text.is_char_boundary(end) {
end -= 1;
}
text.truncate(end);
true
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn a_short_text_is_kept_as_is() {
assert_eq!(excerpt("abc", 3), "abc");
}
#[test]
fn a_long_text_is_truncated_and_marked() {
assert_eq!(excerpt("abcdef", 3), "abc…");
}
#[test]
fn truncation_cuts_on_character_boundaries() {
assert_eq!(excerpt("ééé", 2), "éé…");
}
#[test]
fn a_short_text_is_not_truncated() {
let mut text = String::from("abc");
assert!(!truncate_bytes(&mut text, 3));
assert_eq!(text, "abc");
}
#[test]
fn a_long_text_is_truncated_within_the_limit() {
let mut text = String::from("abcdef");
assert!(truncate_bytes(&mut text, 4));
assert_eq!(text, "abcd");
}
#[test]
fn byte_truncation_never_splits_a_character() {
let mut text = String::from("ééé");
// The limit falls in the middle of the second `é`: it is dropped.
assert!(truncate_bytes(&mut text, 3));
assert_eq!(text, "é");
}
}