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Add cargo lintcheck --recursive to check dependencies of crates

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This commit is contained in:
Alex Macleod 2022-09-21 12:29:05 +00:00
parent 826a8930e6
commit fc77d91469
7 changed files with 339 additions and 55 deletions
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2
lintcheck/Cargo.toml
View file

@ -12,9 +12,11 @@ publish = false
[dependencies]
cargo_metadata = "0.14"
clap = "3.2"
crossbeam-channel = "0.5.6"
flate2 = "1.0"
rayon = "1.5.1"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0.85"
tar = "0.4"
toml = "0.5"
ureq = "2.2"

20
lintcheck/README.md
View file

@ -69,9 +69,27 @@ is checked.
is explicitly specified in the options.
### Fix mode
You can run `./lintcheck/target/debug/lintcheck --fix` which will run Clippy with `--fix` and
You can run `cargo lintcheck --fix` which will run Clippy with `--fix` and
print a warning if Clippy's suggestions fail to apply (if the resulting code does not build).
This lets us spot bad suggestions or false positives automatically in some cases.
Please note that the target dir should be cleaned afterwards since clippy will modify
the downloaded sources which can lead to unexpected results when running lintcheck again afterwards.
### Recursive mode
You can run `cargo lintcheck --recursive` to also run Clippy on the dependencies
of the crates listed in the crates source `.toml`. e.g. adding `rand 0.8.5`
would also lint `rand_core`, `rand_chacha`, etc.
Particularly slow crates in the dependency graph can be ignored using
`recursive.ignore`:
```toml
[crates]
cargo = {name = "cargo", versions = ['0.64.0']}
[recursive]
ignore = [
"unicode-normalization",
]
```

8
lintcheck/lintcheck_crates.toml
View file

@ -33,3 +33,11 @@ cfg-expr = {name = "cfg-expr", versions = ['0.7.1']}
puffin = {name = "puffin", git_url = "https://github.com/EmbarkStudios/puffin", git_hash = "02dd4a3"}
rpmalloc = {name = "rpmalloc", versions = ['0.2.0']}
tame-oidc = {name = "tame-oidc", versions = ['0.1.0']}
[recursive]
ignore = [
# Takes ~30s to lint
"combine",
# Has 1.2 million `clippy::match_same_arms`s
"unicode-normalization",
]

10
lintcheck/src/config.rs
View file

@ -34,11 +34,16 @@ fn get_clap_config() -> ArgMatches {
Arg::new("markdown")
.long("markdown")
.help("Change the reports table to use markdown links"),
Arg::new("recursive")
.long("--recursive")
.help("Run clippy on the dependencies of crates specified in crates-toml")
.conflicts_with("threads")
.conflicts_with("fix"),
])
.get_matches()
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub(crate) struct LintcheckConfig {
/// max number of jobs to spawn (default 1)
pub max_jobs: usize,
@ -54,6 +59,8 @@ pub(crate) struct LintcheckConfig {
pub lint_filter: Vec<String>,
/// Indicate if the output should support markdown syntax
pub markdown: bool,
/// Run clippy on the dependencies of crates
pub recursive: bool,
}
impl LintcheckConfig {
@ -119,6 +126,7 @@ impl LintcheckConfig {
fix: clap_config.contains_id("fix"),
lint_filter,
markdown,
recursive: clap_config.contains_id("recursive"),
}
}
}

67
lintcheck/src/driver.rs Normal file
View file

@ -0,0 +1,67 @@
use crate::recursive::{deserialize_line, serialize_line, DriverInfo};
use std::io::{self, BufReader, Write};
use std::net::TcpStream;
use std::process::{self, Command, Stdio};
use std::{env, mem};
/// 1. Sends [DriverInfo] to the [crate::recursive::LintcheckServer] running on `addr`
/// 2. Receives [bool] from the server, if `false` returns `None`
/// 3. Otherwise sends the stderr of running `clippy-driver` to the server
fn run_clippy(addr: &str) -> Option<i32> {
let driver_info = DriverInfo {
package_name: env::var("CARGO_PKG_NAME").ok()?,
crate_name: env::var("CARGO_CRATE_NAME").ok()?,
version: env::var("CARGO_PKG_VERSION").ok()?,
};
let mut stream = BufReader::new(TcpStream::connect(addr).unwrap());
serialize_line(&driver_info, stream.get_mut());
let should_run = deserialize_line::<bool, _>(&mut stream);
if !should_run {
return None;
}
// Remove --cap-lints allow so that clippy runs and lints are emitted
let mut include_next = true;
let args = env::args().skip(1).filter(|arg| match arg.as_str() {
"--cap-lints=allow" => false,
"--cap-lints" => {
include_next = false;
false
},
_ => mem::replace(&mut include_next, true),
});
let output = Command::new(env::var("CLIPPY_DRIVER").expect("missing env CLIPPY_DRIVER"))
.args(args)
.stdout(Stdio::inherit())
.output()
.expect("failed to run clippy-driver");
stream
.get_mut()
.write_all(&output.stderr)
.unwrap_or_else(|e| panic!("{e:?} in {driver_info:?}"));
match output.status.code() {
Some(0) => Some(0),
code => {
io::stderr().write_all(&output.stderr).unwrap();
Some(code.expect("killed by signal"))
},
}
}
pub fn drive(addr: &str) {
process::exit(run_clippy(addr).unwrap_or_else(|| {
Command::new("rustc")
.args(env::args_os().skip(2))
.status()
.unwrap()
.code()
.unwrap()
}))
}

164
lintcheck/src/main.rs
View file

@ -8,13 +8,17 @@
#![allow(clippy::collapsible_else_if)]
mod config;
mod driver;
mod recursive;
use config::LintcheckConfig;
use crate::config::LintcheckConfig;
use crate::recursive::LintcheckServer;
use std::collections::HashMap;
use std::collections::{HashMap, HashSet};
use std::env;
use std::env::consts::EXE_SUFFIX;
use std::fmt::Write as _;
use std::fs::write;
use std::fs;
use std::io::ErrorKind;
use std::path::{Path, PathBuf};
use std::process::Command;
@ -22,22 +26,12 @@ use std::sync::atomic::{AtomicUsize, Ordering};
use std::thread;
use std::time::Duration;
use cargo_metadata::diagnostic::DiagnosticLevel;
use cargo_metadata::diagnostic::{Diagnostic, DiagnosticLevel};
use cargo_metadata::Message;
use rayon::prelude::*;
use serde::{Deserialize, Serialize};
use walkdir::{DirEntry, WalkDir};
#[cfg(not(windows))]
const CLIPPY_DRIVER_PATH: &str = "target/debug/clippy-driver";
#[cfg(not(windows))]
const CARGO_CLIPPY_PATH: &str = "target/debug/cargo-clippy";
#[cfg(windows)]
const CLIPPY_DRIVER_PATH: &str = "target/debug/clippy-driver.exe";
#[cfg(windows)]
const CARGO_CLIPPY_PATH: &str = "target/debug/cargo-clippy.exe";
const LINTCHECK_DOWNLOADS: &str = "target/lintcheck/downloads";
const LINTCHECK_SOURCES: &str = "target/lintcheck/sources";
@ -45,6 +39,13 @@ const LINTCHECK_SOURCES: &str = "target/lintcheck/sources";
#[derive(Debug, Serialize, Deserialize)]
struct SourceList {
crates: HashMap<String, TomlCrate>,
#[serde(default)]
recursive: RecursiveOptions,
}
#[derive(Debug, Serialize, Deserialize, Default)]
struct RecursiveOptions {
ignore: HashSet<String>,
}
/// A crate source stored inside the .toml
@ -105,12 +106,7 @@ struct ClippyWarning {
#[allow(unused)]
impl ClippyWarning {
fn new(cargo_message: Message, krate: &Crate) -> Option<Self> {
let diag = match cargo_message {
Message::CompilerMessage(message) => message.message,
_ => return None,
};
fn new(diag: Diagnostic, crate_name: &str, crate_version: &str) -> Option<Self> {
let lint_type = diag.code?.code;
if !(lint_type.contains("clippy") || diag.message.contains("clippy"))
|| diag.message.contains("could not read cargo metadata")
@ -124,12 +120,12 @@ impl ClippyWarning {
Ok(stripped) => format!("$CARGO_HOME/{}", stripped.display()),
Err(_) => format!(
"target/lintcheck/sources/{}-{}/{}",
krate.name, krate.version, span.file_name
crate_name, crate_version, span.file_name
),
};
Some(Self {
crate_name: krate.name.clone(),
crate_name: crate_name.to_owned(),
file,
line: span.line_start,
column: span.column_start,
@ -142,8 +138,6 @@ impl ClippyWarning {
fn to_output(&self, markdown: bool) -> String {
let file_with_pos = format!("{}:{}:{}", &self.file, &self.line, &self.column);
if markdown {
let lint = format!("`{}`", self.lint_type);
let mut file = self.file.clone();
if !file.starts_with('$') {
file.insert_str(0, "../");
@ -151,7 +145,7 @@ impl ClippyWarning {
let mut output = String::from("| ");
let _ = write!(output, "[`{}`]({}#L{})", file_with_pos, file, self.line);
let _ = write!(output, r#" | {:<50} | "{}" |"#, lint, self.message);
let _ = write!(output, r#" | `{:<50}` | "{}" |"#, self.lint_type, self.message);
output.push('\n');
output
} else {
@ -243,6 +237,7 @@ impl CrateSource {
}
// check out the commit/branch/whatever
if !Command::new("git")
.args(["-c", "advice.detachedHead=false"])
.arg("checkout")
.arg(commit)
.current_dir(&repo_path)
@ -309,10 +304,12 @@ impl Crate {
fn run_clippy_lints(
&self,
cargo_clippy_path: &Path,
clippy_driver_path: &Path,
target_dir_index: &AtomicUsize,
total_crates_to_lint: usize,
config: &LintcheckConfig,
lint_filter: &Vec<String>,
server: &Option<LintcheckServer>,
) -> Vec<ClippyWarning> {
// advance the atomic index by one
let index = target_dir_index.fetch_add(1, Ordering::SeqCst);
@ -336,36 +333,67 @@ impl Crate {
let shared_target_dir = clippy_project_root().join("target/lintcheck/shared_target_dir");
let mut args = if config.fix {
let mut cargo_clippy_args = if config.fix {
vec!["--fix", "--"]
} else {
vec!["--", "--message-format=json", "--"]
};
let mut clippy_args = Vec::<&str>::new();
if let Some(options) = &self.options {
for opt in options {
args.push(opt);
clippy_args.push(opt);
}
} else {
args.extend(&["-Wclippy::pedantic", "-Wclippy::cargo"])
clippy_args.extend(&["-Wclippy::pedantic", "-Wclippy::cargo"])
}
if lint_filter.is_empty() {
args.push("--cap-lints=warn");
clippy_args.push("--cap-lints=warn");
} else {
args.push("--cap-lints=allow");
args.extend(lint_filter.iter().map(|filter| filter.as_str()))
clippy_args.push("--cap-lints=allow");
clippy_args.extend(lint_filter.iter().map(|filter| filter.as_str()))
}
let all_output = std::process::Command::new(&cargo_clippy_path)
if let Some(server) = server {
let target = shared_target_dir.join("recursive");
// `cargo clippy` is a wrapper around `cargo check` that mainly sets `RUSTC_WORKSPACE_WRAPPER` to
// `clippy-driver`. We do the same thing here with a couple changes:
//
// `RUSTC_WRAPPER` is used instead of `RUSTC_WORKSPACE_WRAPPER` so that we can lint all crate
// dependencies rather than only workspace members
//
// The wrapper is set to the `lintcheck` so we can force enable linting and ignore certain crates
// (see `crate::driver`)
let status = Command::new("cargo")
.arg("check")
.arg("--quiet")
.current_dir(&self.path)
.env("CLIPPY_ARGS", clippy_args.join("__CLIPPY_HACKERY__"))
.env("CARGO_TARGET_DIR", target)
.env("RUSTC_WRAPPER", env::current_exe().unwrap())
// Pass the absolute path so `crate::driver` can find `clippy-driver`, as it's executed in various
// different working directories
.env("CLIPPY_DRIVER", clippy_driver_path)
.env("LINTCHECK_SERVER", server.local_addr.to_string())
.status()
.expect("failed to run cargo");
assert_eq!(status.code(), Some(0));
return Vec::new();
}
cargo_clippy_args.extend(clippy_args);
let all_output = Command::new(&cargo_clippy_path)
// use the looping index to create individual target dirs
.env(
"CARGO_TARGET_DIR",
shared_target_dir.join(format!("_{:?}", thread_index)),
)
// lint warnings will look like this:
// src/cargo/ops/cargo_compile.rs:127:35: warning: usage of `FromIterator::from_iter`
.args(&args)
.args(&cargo_clippy_args)
.current_dir(&self.path)
.output()
.unwrap_or_else(|error| {
@ -404,7 +432,10 @@ impl Crate {
// get all clippy warnings and ICEs
let warnings: Vec<ClippyWarning> = Message::parse_stream(stdout.as_bytes())
.filter_map(|msg| ClippyWarning::new(msg.unwrap(), &self))
.filter_map(|msg| match msg {
Ok(Message::CompilerMessage(message)) => ClippyWarning::new(message.message, &self.name, &self.version),
_ => None,
})
.collect();
warnings
@ -423,8 +454,8 @@ fn build_clippy() {
}
}
/// Read a `toml` file and return a list of `CrateSources` that we want to check with clippy
fn read_crates(toml_path: &Path) -> Vec<CrateSource> {
/// Read a `lintcheck_crates.toml` file
fn read_crates(toml_path: &Path) -> (Vec<CrateSource>, RecursiveOptions) {
let toml_content: String =
std::fs::read_to_string(&toml_path).unwrap_or_else(|_| panic!("Failed to read {}", toml_path.display()));
let crate_list: SourceList =
@ -484,7 +515,7 @@ fn read_crates(toml_path: &Path) -> Vec<CrateSource> {
// sort the crates
crate_sources.sort();
crate_sources
(crate_sources, crate_list.recursive)
}
/// Generate a short list of occurring lints-types and their count
@ -516,20 +547,20 @@ fn gather_stats(clippy_warnings: &[ClippyWarning]) -> (String, HashMap<&String,
/// check if the latest modification of the logfile is older than the modification date of the
/// clippy binary, if this is true, we should clean the lintchec shared target directory and recheck
fn lintcheck_needs_rerun(lintcheck_logs_path: &Path) -> bool {
fn lintcheck_needs_rerun(lintcheck_logs_path: &Path, paths: [&Path; 2]) -> bool {
if !lintcheck_logs_path.exists() {
return true;
}
let clippy_modified: std::time::SystemTime = {
let mut times = [CLIPPY_DRIVER_PATH, CARGO_CLIPPY_PATH].iter().map(|p| {
let [cargo, driver] = paths.map(|p| {
std::fs::metadata(p)
.expect("failed to get metadata of file")
.modified()
.expect("failed to get modification date")
});
// the oldest modification of either of the binaries
std::cmp::max(times.next().unwrap(), times.next().unwrap())
std::cmp::max(cargo, driver)
};
let logs_modified: std::time::SystemTime = std::fs::metadata(lintcheck_logs_path)
@ -543,6 +574,11 @@ fn lintcheck_needs_rerun(lintcheck_logs_path: &Path) -> bool {
}
fn main() {
// We're being executed as a `RUSTC_WRAPPER` as part of `--recursive`
if let Ok(addr) = env::var("LINTCHECK_SERVER") {
driver::drive(&addr);
}
// assert that we launch lintcheck from the repo root (via cargo lintcheck)
if std::fs::metadata("lintcheck/Cargo.toml").is_err() {
eprintln!("lintcheck needs to be run from clippy's repo root!\nUse `cargo lintcheck` alternatively.");
@ -555,9 +591,15 @@ fn main() {
build_clippy();
println!("Done compiling");
let cargo_clippy_path = fs::canonicalize(format!("target/debug/cargo-clippy{EXE_SUFFIX}")).unwrap();
let clippy_driver_path = fs::canonicalize(format!("target/debug/clippy-driver{EXE_SUFFIX}")).unwrap();
// if the clippy bin is newer than our logs, throw away target dirs to force clippy to
// refresh the logs
if lintcheck_needs_rerun(&config.lintcheck_results_path) {
if lintcheck_needs_rerun(
&config.lintcheck_results_path,
[&cargo_clippy_path, &clippy_driver_path],
) {
let shared_target_dir = "target/lintcheck/shared_target_dir";
// if we get an Err here, the shared target dir probably does simply not exist
if let Ok(metadata) = std::fs::metadata(&shared_target_dir) {
@ -569,10 +611,6 @@ fn main() {
}
}
let cargo_clippy_path: PathBuf = PathBuf::from(CARGO_CLIPPY_PATH)
.canonicalize()
.expect("failed to canonicalize path to clippy binary");
// assert that clippy is found
assert!(
cargo_clippy_path.is_file(),
@ -580,7 +618,7 @@ fn main() {
cargo_clippy_path.display()
);
let clippy_ver = std::process::Command::new(CARGO_CLIPPY_PATH)
let clippy_ver = std::process::Command::new(&cargo_clippy_path)
.arg("--version")
.output()
.map(|o| String::from_utf8_lossy(&o.stdout).into_owned())
@ -589,7 +627,7 @@ fn main() {
// download and extract the crates, then run clippy on them and collect clippy's warnings
// flatten into one big list of warnings
let crates = read_crates(&config.sources_toml_path);
let (crates, recursive_options) = read_crates(&config.sources_toml_path);
let old_stats = read_stats_from_file(&config.lintcheck_results_path);
let counter = AtomicUsize::new(1);
@ -639,11 +677,31 @@ fn main() {
.build_global()
.unwrap();
let clippy_warnings: Vec<ClippyWarning> = crates
let server = config.recursive.then(|| {
let _ = fs::remove_dir_all("target/lintcheck/shared_target_dir/recursive");
LintcheckServer::spawn(recursive_options)
});
let mut clippy_warnings: Vec<ClippyWarning> = crates
.par_iter()
.flat_map(|krate| krate.run_clippy_lints(&cargo_clippy_path, &counter, crates.len(), &config, &lint_filter))
.flat_map(|krate| {
krate.run_clippy_lints(
&cargo_clippy_path,
&clippy_driver_path,
&counter,
crates.len(),
&config,
&lint_filter,
&server,
)
})
.collect();
if let Some(server) = server {
clippy_warnings.extend(server.warnings());
}
// if we are in --fix mode, don't change the log files, terminate here
if config.fix {
return;
@ -681,8 +739,8 @@ fn main() {
}
println!("Writing logs to {}", config.lintcheck_results_path.display());
std::fs::create_dir_all(config.lintcheck_results_path.parent().unwrap()).unwrap();
write(&config.lintcheck_results_path, text).unwrap();
fs::create_dir_all(config.lintcheck_results_path.parent().unwrap()).unwrap();
fs::write(&config.lintcheck_results_path, text).unwrap();
print_stats(old_stats, new_stats, &config.lint_filter);
}

123
lintcheck/src/recursive.rs Normal file
View file

@ -0,0 +1,123 @@
//! In `--recursive` mode we set the `lintcheck` binary as the `RUSTC_WRAPPER` of `cargo check`,
//! this allows [crate::driver] to be run for every dependency. The driver connects to
//! [LintcheckServer] to ask if it should be skipped, and if not sends the stderr of running clippy
//! on the crate to the server
use crate::ClippyWarning;
use crate::RecursiveOptions;
use std::collections::HashSet;
use std::io::{BufRead, BufReader, Read, Write};
use std::net::{SocketAddr, TcpListener, TcpStream};
use std::sync::{Arc, Mutex};
use std::thread;
use cargo_metadata::diagnostic::Diagnostic;
use crossbeam_channel::{Receiver, Sender};
use serde::de::DeserializeOwned;
use serde::{Deserialize, Serialize};
#[derive(Debug, Eq, Hash, PartialEq, Clone, Serialize, Deserialize)]
pub(crate) struct DriverInfo {
pub package_name: String,
pub crate_name: String,
pub version: String,
}
pub(crate) fn serialize_line<T, W>(value: &T, writer: &mut W)
where
T: Serialize,
W: Write,
{
let mut buf = serde_json::to_vec(&value).expect("failed to serialize");
buf.push(b'\n');
writer.write_all(&buf).expect("write_all failed");
}
pub(crate) fn deserialize_line<T, R>(reader: &mut R) -> T
where
T: DeserializeOwned,
R: BufRead,
{
let mut string = String::new();
reader.read_line(&mut string).expect("read_line failed");
serde_json::from_str(&string).expect("failed to deserialize")
}
fn process_stream(
stream: TcpStream,
sender: &Sender<ClippyWarning>,
options: &RecursiveOptions,
seen: &Mutex<HashSet<DriverInfo>>,
) {
let mut stream = BufReader::new(stream);
let driver_info: DriverInfo = deserialize_line(&mut stream);
let unseen = seen.lock().unwrap().insert(driver_info.clone());
let ignored = options.ignore.contains(&driver_info.package_name);
let should_run = unseen && !ignored;
serialize_line(&should_run, stream.get_mut());
let mut stderr = String::new();
stream.read_to_string(&mut stderr).unwrap();
let messages = stderr
.lines()
.filter_map(|json_msg| serde_json::from_str::<Diagnostic>(json_msg).ok())
.filter_map(|diag| ClippyWarning::new(diag, &driver_info.package_name, &driver_info.version));
for message in messages {
sender.send(message).unwrap();
}
}
pub(crate) struct LintcheckServer {
pub local_addr: SocketAddr,
receiver: Receiver<ClippyWarning>,
sender: Arc<Sender<ClippyWarning>>,
}
impl LintcheckServer {
pub fn spawn(options: RecursiveOptions) -> Self {
let listener = TcpListener::bind("localhost:0").unwrap();
let local_addr = listener.local_addr().unwrap();
let (sender, receiver) = crossbeam_channel::unbounded::<ClippyWarning>();
let sender = Arc::new(sender);
// The spawned threads hold a `Weak<Sender>` so that they don't keep the channel connected
// indefinitely
let sender_weak = Arc::downgrade(&sender);
// Ignore dependencies multiple times, e.g. for when it's both checked and compiled for a
// build dependency
let seen = Mutex::default();
thread::spawn(move || {
thread::scope(|s| {
s.spawn(|| {
while let Ok((stream, _)) = listener.accept() {
let sender = sender_weak.upgrade().expect("received connection after server closed");
let options = &options;
let seen = &seen;
s.spawn(move || process_stream(stream, &sender, options, seen));
}
});
});
});
Self {
local_addr,
sender,
receiver,
}
}
pub fn warnings(self) -> impl Iterator<Item = ClippyWarning> {
// causes the channel to become disconnected so that the receiver iterator ends
drop(self.sender);
self.receiver.into_iter()
}
}