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Some lintcheck cleanup

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This commit is contained in:
Alex Macleod 2022-05-07 22:10:56 +01:00
parent 43756b6e4d
commit 8708a261a1
4 changed files with 258 additions and 347 deletions
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5
lintcheck/Cargo.toml
View file

@ -6,16 +6,15 @@ readme = "README.md"
license = "MIT OR Apache-2.0"
repository = "https://github.com/rust-lang/rust-clippy"
categories = ["development-tools"]
edition = "2018"
edition = "2021"
publish = false
[dependencies]
cargo_metadata = "0.14"
clap = "2.33"
flate2 = "1.0"
fs_extra = "1.2"
rayon = "1.5.1"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
tar = "0.4"
toml = "0.5"
ureq = "2.2"

2
lintcheck/lintcheck_crates.toml
View file

@ -24,7 +24,7 @@ unicode-xid = {name = "unicode-xid", versions = ['0.2.1']}
anyhow = {name = "anyhow", versions = ['1.0.38']}
async-trait = {name = "async-trait", versions = ['0.1.42']}
cxx = {name = "cxx", versions = ['1.0.32']}
ryu = {name = "ryu", version = ['1.0.5']}
ryu = {name = "ryu", versions = ['1.0.5']}
serde_yaml = {name = "serde_yaml", versions = ['0.8.17']}
thiserror = {name = "thiserror", versions = ['1.0.24']}
# some embark crates, there are other interesting crates but

140
lintcheck/src/config.rs Normal file
View file

@ -0,0 +1,140 @@
use clap::{App, Arg, ArgMatches};
use std::env;
use std::path::PathBuf;
fn get_clap_config<'a>() -> ArgMatches<'a> {
App::new("lintcheck")
.about("run clippy on a set of crates and check output")
.arg(
Arg::with_name("only")
.takes_value(true)
.value_name("CRATE")
.long("only")
.help("Only process a single crate of the list"),
)
.arg(
Arg::with_name("crates-toml")
.takes_value(true)
.value_name("CRATES-SOURCES-TOML-PATH")
.long("crates-toml")
.help("Set the path for a crates.toml where lintcheck should read the sources from"),
)
.arg(
Arg::with_name("threads")
.takes_value(true)
.value_name("N")
.short("j")
.long("jobs")
.help("Number of threads to use, 0 automatic choice"),
)
.arg(
Arg::with_name("fix")
.long("--fix")
.help("Runs cargo clippy --fix and checks if all suggestions apply"),
)
.arg(
Arg::with_name("filter")
.long("--filter")
.takes_value(true)
.multiple(true)
.value_name("clippy_lint_name")
.help("Apply a filter to only collect specified lints, this also overrides `allow` attributes"),
)
.arg(
Arg::with_name("markdown")
.long("--markdown")
.help("Change the reports table to use markdown links"),
)
.get_matches()
}
#[derive(Debug)]
pub(crate) struct LintcheckConfig {
/// max number of jobs to spawn (default 1)
pub max_jobs: usize,
/// we read the sources to check from here
pub sources_toml_path: PathBuf,
/// we save the clippy lint results here
pub lintcheck_results_path: PathBuf,
/// Check only a specified package
pub only: Option<String>,
/// whether to just run --fix and not collect all the warnings
pub fix: bool,
/// A list of lints that this lintcheck run should focus on
pub lint_filter: Vec<String>,
/// Indicate if the output should support markdown syntax
pub markdown: bool,
}
impl LintcheckConfig {
pub fn new() -> Self {
let clap_config = get_clap_config();
// first, check if we got anything passed via the LINTCHECK_TOML env var,
// if not, ask clap if we got any value for --crates-toml <foo>
// if not, use the default "lintcheck/lintcheck_crates.toml"
let sources_toml = env::var("LINTCHECK_TOML").unwrap_or_else(|_| {
clap_config
.value_of("crates-toml")
.clone()
.unwrap_or("lintcheck/lintcheck_crates.toml")
.to_string()
});
let markdown = clap_config.is_present("markdown");
let sources_toml_path = PathBuf::from(sources_toml);
// for the path where we save the lint results, get the filename without extension (so for
// wasd.toml, use "wasd"...)
let filename: PathBuf = sources_toml_path.file_stem().unwrap().into();
let lintcheck_results_path = PathBuf::from(format!(
"lintcheck-logs/{}_logs.{}",
filename.display(),
if markdown { "md" } else { "txt" }
));
// look at the --threads arg, if 0 is passed, ask rayon rayon how many threads it would spawn and
// use half of that for the physical core count
// by default use a single thread
let max_jobs = match clap_config.value_of("threads") {
Some(threads) => {
let threads: usize = threads
.parse()
.unwrap_or_else(|_| panic!("Failed to parse '{}' to a digit", threads));
if threads == 0 {
// automatic choice
// Rayon seems to return thread count so half that for core count
(rayon::current_num_threads() / 2) as usize
} else {
threads
}
},
// no -j passed, use a single thread
None => 1,
};
let lint_filter: Vec<String> = clap_config
.values_of("filter")
.map(|iter| {
iter.map(|lint_name| {
let mut filter = lint_name.replace('_', "-");
if !filter.starts_with("clippy::") {
filter.insert_str(0, "clippy::");
}
filter
})
.collect()
})
.unwrap_or_default();
LintcheckConfig {
max_jobs,
sources_toml_path,
lintcheck_results_path,
only: clap_config.value_of("only").map(String::from),
fix: clap_config.is_present("fix"),
lint_filter,
markdown,
}
}
}

458
lintcheck/src/main.rs
View file

@ -7,23 +7,25 @@
#![allow(clippy::collapsible_else_if)]
use std::ffi::OsStr;
mod config;
use config::LintcheckConfig;
use std::collections::HashMap;
use std::env;
use std::fmt::Write as _;
use std::fs::write;
use std::io::ErrorKind;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::{collections::HashMap, io::ErrorKind};
use std::{
env,
fs::write,
path::{Path, PathBuf},
thread,
time::Duration,
};
use std::thread;
use std::time::Duration;
use clap::{App, Arg, ArgMatches};
use cargo_metadata::diagnostic::DiagnosticLevel;
use cargo_metadata::Message;
use rayon::prelude::*;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use walkdir::{DirEntry, WalkDir};
#[cfg(not(windows))]
@ -93,37 +95,67 @@ struct Crate {
#[derive(Debug)]
struct ClippyWarning {
crate_name: String,
crate_version: String,
file: String,
line: String,
column: String,
linttype: String,
line: usize,
column: usize,
lint_type: String,
message: String,
is_ice: bool,
}
#[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,
};
let lint_type = diag.code?.code;
if !(lint_type.contains("clippy") || diag.message.contains("clippy"))
|| diag.message.contains("could not read cargo metadata")
{
return None;
}
let span = diag.spans.into_iter().find(|span| span.is_primary)?;
let file = match Path::new(&span.file_name).strip_prefix(env!("CARGO_HOME")) {
Ok(stripped) => format!("$CARGO_HOME/{}", stripped.display()),
Err(_) => format!(
"target/lintcheck/sources/{}-{}/{}",
krate.name, krate.version, span.file_name
),
};
Some(Self {
crate_name: krate.name.clone(),
file,
line: span.line_start,
column: span.column_start,
lint_type,
message: diag.message,
is_ice: diag.level == DiagnosticLevel::Ice,
})
}
fn to_output(&self, markdown: bool) -> String {
let file = format!("{}-{}/{}", &self.crate_name, &self.crate_version, &self.file);
let file_with_pos = format!("{}:{}:{}", &file, &self.line, &self.column);
let file_with_pos = format!("{}:{}:{}", &self.file, &self.line, &self.column);
if markdown {
let lint = format!("`{}`", self.linttype);
let lint = format!("`{}`", self.lint_type);
let mut file = self.file.clone();
if !file.starts_with('$') {
file.insert_str(0, "../");
}
let mut output = String::from("| ");
let _ = write!(
output,
"[`{}`](../target/lintcheck/sources/{}#L{})",
file_with_pos, file, self.line
);
let _ = write!(output, "[`{}`]({}#L{})", file_with_pos, file, self.line);
let _ = write!(output, r#" | {:<50} | "{}" |"#, lint, self.message);
output.push('\n');
output
} else {
format!(
"target/lintcheck/sources/{} {} \"{}\"\n",
file_with_pos, self.linttype, self.message
)
format!("{} {} \"{}\"\n", file_with_pos, self.lint_type, self.message)
}
}
}
@ -278,18 +310,17 @@ impl Crate {
&self,
cargo_clippy_path: &Path,
target_dir_index: &AtomicUsize,
thread_limit: usize,
total_crates_to_lint: usize,
fix: bool,
config: &LintcheckConfig,
lint_filter: &Vec<String>,
) -> Vec<ClippyWarning> {
// advance the atomic index by one
let index = target_dir_index.fetch_add(1, Ordering::SeqCst);
// "loop" the index within 0..thread_limit
let thread_index = index % thread_limit;
let thread_index = index % config.max_jobs;
let perc = (index * 100) / total_crates_to_lint;
if thread_limit == 1 {
if config.max_jobs == 1 {
println!(
"{}/{} {}% Linting {} {}",
index, total_crates_to_lint, perc, &self.name, &self.version
@ -305,7 +336,7 @@ impl Crate {
let shared_target_dir = clippy_project_root().join("target/lintcheck/shared_target_dir");
let mut args = if fix {
let mut args = if config.fix {
vec!["--fix", "--"]
} else {
vec!["--", "--message-format=json", "--"]
@ -356,7 +387,7 @@ impl Crate {
);
}
if fix {
if config.fix {
if let Some(stderr) = stderr
.lines()
.find(|line| line.contains("failed to automatically apply fixes suggested by rustc to crate"))
@ -371,127 +402,15 @@ impl Crate {
return Vec::new();
}
let output_lines = stdout.lines();
let warnings: Vec<ClippyWarning> = output_lines
.into_iter()
// get all clippy warnings and ICEs
.filter(|line| filter_clippy_warnings(&line))
.map(|json_msg| parse_json_message(json_msg, &self))
// get all clippy warnings and ICEs
let warnings: Vec<ClippyWarning> = Message::parse_stream(stdout.as_bytes())
.filter_map(|msg| ClippyWarning::new(msg.unwrap(), &self))
.collect();
warnings
}
}
#[derive(Debug)]
struct LintcheckConfig {
/// max number of jobs to spawn (default 1)
max_jobs: usize,
/// we read the sources to check from here
sources_toml_path: PathBuf,
/// we save the clippy lint results here
lintcheck_results_path: PathBuf,
/// whether to just run --fix and not collect all the warnings
fix: bool,
/// A list of lints that this lintcheck run should focus on
lint_filter: Vec<String>,
/// Indicate if the output should support markdown syntax
markdown: bool,
}
impl LintcheckConfig {
fn from_clap(clap_config: &ArgMatches) -> Self {
// first, check if we got anything passed via the LINTCHECK_TOML env var,
// if not, ask clap if we got any value for --crates-toml <foo>
// if not, use the default "lintcheck/lintcheck_crates.toml"
let sources_toml = env::var("LINTCHECK_TOML").unwrap_or_else(|_| {
clap_config
.value_of("crates-toml")
.clone()
.unwrap_or("lintcheck/lintcheck_crates.toml")
.to_string()
});
let markdown = clap_config.is_present("markdown");
let sources_toml_path = PathBuf::from(sources_toml);
// for the path where we save the lint results, get the filename without extension (so for
// wasd.toml, use "wasd"...)
let filename: PathBuf = sources_toml_path.file_stem().unwrap().into();
let lintcheck_results_path = PathBuf::from(format!(
"lintcheck-logs/{}_logs.{}",
filename.display(),
if markdown { "md" } else { "txt" }
));
// look at the --threads arg, if 0 is passed, ask rayon rayon how many threads it would spawn and
// use half of that for the physical core count
// by default use a single thread
let max_jobs = match clap_config.value_of("threads") {
Some(threads) => {
let threads: usize = threads
.parse()
.unwrap_or_else(|_| panic!("Failed to parse '{}' to a digit", threads));
if threads == 0 {
// automatic choice
// Rayon seems to return thread count so half that for core count
(rayon::current_num_threads() / 2) as usize
} else {
threads
}
},
// no -j passed, use a single thread
None => 1,
};
let fix: bool = clap_config.is_present("fix");
let lint_filter: Vec<String> = clap_config
.values_of("filter")
.map(|iter| {
iter.map(|lint_name| {
let mut filter = lint_name.replace('_', "-");
if !filter.starts_with("clippy::") {
filter.insert_str(0, "clippy::");
}
filter
})
.collect()
})
.unwrap_or_default();
LintcheckConfig {
max_jobs,
sources_toml_path,
lintcheck_results_path,
fix,
lint_filter,
markdown,
}
}
}
/// takes a single json-formatted clippy warnings and returns true (we are interested in that line)
/// or false (we aren't)
fn filter_clippy_warnings(line: &str) -> bool {
// we want to collect ICEs because clippy might have crashed.
// these are summarized later
if line.contains("internal compiler error: ") {
return true;
}
// in general, we want all clippy warnings
// however due to some kind of bug, sometimes there are absolute paths
// to libcore files inside the message
// or we end up with cargo-metadata output (https://github.com/rust-lang/rust-clippy/issues/6508)
// filter out these message to avoid unnecessary noise in the logs
if line.contains("clippy::")
&& !(line.contains("could not read cargo metadata")
|| (line.contains(".rustup") && line.contains("toolchains")))
{
return true;
}
false
}
/// Builds clippy inside the repo to make sure we have a clippy executable we can use.
fn build_clippy() {
let status = Command::new("cargo")
@ -527,10 +446,8 @@ fn read_crates(toml_path: &Path) -> Vec<CrateSource> {
path: PathBuf::from(path),
options: tk.options.clone(),
});
}
// if we have multiple versions, save each one
if let Some(ref versions) = tk.versions {
} else if let Some(ref versions) = tk.versions {
// if we have multiple versions, save each one
versions.iter().for_each(|ver| {
crate_sources.push(CrateSource::CratesIo {
name: tk.name.clone(),
@ -538,16 +455,18 @@ fn read_crates(toml_path: &Path) -> Vec<CrateSource> {
options: tk.options.clone(),
});
})
}
// otherwise, we should have a git source
if tk.git_url.is_some() && tk.git_hash.is_some() {
} else if tk.git_url.is_some() && tk.git_hash.is_some() {
// otherwise, we should have a git source
crate_sources.push(CrateSource::Git {
name: tk.name.clone(),
url: tk.git_url.clone().unwrap(),
commit: tk.git_hash.clone().unwrap(),
options: tk.options.clone(),
});
} else {
panic!("Invalid crate source: {tk:?}");
}
// if we have a version as well as a git data OR only one git data, something is funky
if tk.versions.is_some() && (tk.git_url.is_some() || tk.git_hash.is_some())
|| tk.git_hash.is_some() != tk.git_url.is_some()
@ -568,57 +487,13 @@ fn read_crates(toml_path: &Path) -> Vec<CrateSource> {
crate_sources
}
/// Parse the json output of clippy and return a `ClippyWarning`
fn parse_json_message(json_message: &str, krate: &Crate) -> ClippyWarning {
let jmsg: Value = serde_json::from_str(&json_message).unwrap_or_else(|e| panic!("Failed to parse json:\n{:?}", e));
let file: String = jmsg["message"]["spans"][0]["file_name"]
.to_string()
.trim_matches('"')
.into();
let file = if file.contains(".cargo") {
// if we deal with macros, a filename may show the origin of a macro which can be inside a dep from
// the registry.
// don't show the full path in that case.
// /home/matthias/.cargo/registry/src/github.com-1ecc6299db9ec823/syn-1.0.63/src/custom_keyword.rs
let path = PathBuf::from(file);
let mut piter = path.iter();
// consume all elements until we find ".cargo", so that "/home/matthias" is skipped
let _: Option<&OsStr> = piter.find(|x| x == &std::ffi::OsString::from(".cargo"));
// collect the remaining segments
let file = piter.collect::<PathBuf>();
format!("{}", file.display())
} else {
file
};
ClippyWarning {
crate_name: krate.name.to_string(),
crate_version: krate.version.to_string(),
file,
line: jmsg["message"]["spans"][0]["line_start"]
.to_string()
.trim_matches('"')
.into(),
column: jmsg["message"]["spans"][0]["text"][0]["highlight_start"]
.to_string()
.trim_matches('"')
.into(),
linttype: jmsg["message"]["code"]["code"].to_string().trim_matches('"').into(),
message: jmsg["message"]["message"].to_string().trim_matches('"').into(),
is_ice: json_message.contains("internal compiler error: "),
}
}
/// Generate a short list of occurring lints-types and their count
fn gather_stats(clippy_warnings: &[ClippyWarning]) -> (String, HashMap<&String, usize>) {
// count lint type occurrences
let mut counter: HashMap<&String, usize> = HashMap::new();
clippy_warnings
.iter()
.for_each(|wrn| *counter.entry(&wrn.linttype).or_insert(0) += 1);
.for_each(|wrn| *counter.entry(&wrn.lint_type).or_insert(0) += 1);
// collect into a tupled list for sorting
let mut stats: Vec<(&&String, &usize)> = counter.iter().map(|(lint, count)| (lint, count)).collect();
@ -667,22 +542,14 @@ fn lintcheck_needs_rerun(lintcheck_logs_path: &Path) -> bool {
logs_modified < clippy_modified
}
/// lintchecks `main()` function
///
/// # Panics
///
/// This function panics if the clippy binaries don't exist
/// or if lintcheck is executed from the wrong directory (aka none-repo-root)
pub fn main() {
fn main() {
// 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 clippys repo root!\nUse `cargo lintcheck` alternatively.");
std::process::exit(3);
}
let clap_config = &get_clap_config();
let config = LintcheckConfig::from_clap(clap_config);
let config = LintcheckConfig::new();
println!("Compiling clippy...");
build_clippy();
@ -736,76 +603,46 @@ pub fn main() {
})
.collect();
let clippy_warnings: Vec<ClippyWarning> = if let Some(only_one_crate) = clap_config.value_of("only") {
// if we don't have the specified crate in the .toml, throw an error
if !crates.iter().any(|krate| {
let name = match krate {
CrateSource::CratesIo { name, .. } | CrateSource::Git { name, .. } | CrateSource::Path { name, .. } => {
name
},
};
name == only_one_crate
}) {
eprintln!(
"ERROR: could not find crate '{}' in lintcheck/lintcheck_crates.toml",
only_one_crate
);
std::process::exit(1);
}
let crates: Vec<Crate> = crates
.into_iter()
.filter(|krate| {
if let Some(only_one_crate) = &config.only {
let name = match krate {
CrateSource::CratesIo { name, .. }
| CrateSource::Git { name, .. }
| CrateSource::Path { name, .. } => name,
};
// only check a single crate that was passed via cmdline
crates
.into_iter()
.map(|krate| krate.download_and_extract())
.filter(|krate| krate.name == only_one_crate)
.flat_map(|krate| {
krate.run_clippy_lints(&cargo_clippy_path, &AtomicUsize::new(0), 1, 1, config.fix, &lint_filter)
})
.collect()
} else {
if config.max_jobs > 1 {
// run parallel with rayon
name == only_one_crate
} else {
true
}
})
.map(|krate| krate.download_and_extract())
.collect();
// Ask rayon for thread count. Assume that half of that is the number of physical cores
// Use one target dir for each core so that we can run N clippys in parallel.
// We need to use different target dirs because cargo would lock them for a single build otherwise,
// killing the parallelism. However this also means that deps will only be reused half/a
// quarter of the time which might result in a longer wall clock runtime
if crates.is_empty() {
eprintln!(
"ERROR: could not find crate '{}' in lintcheck/lintcheck_crates.toml",
config.only.unwrap(),
);
std::process::exit(1);
}
// This helps when we check many small crates with dep-trees that don't have a lot of branches in
// order to achieve some kind of parallelism
// run parallel with rayon
// by default, use a single thread
let num_cpus = config.max_jobs;
let num_crates = crates.len();
// This helps when we check many small crates with dep-trees that don't have a lot of branches in
// order to achieve some kind of parallelism
// check all crates (default)
crates
.into_par_iter()
.map(|krate| krate.download_and_extract())
.flat_map(|krate| {
krate.run_clippy_lints(
&cargo_clippy_path,
&counter,
num_cpus,
num_crates,
config.fix,
&lint_filter,
)
})
.collect()
} else {
// run sequential
let num_crates = crates.len();
crates
.into_iter()
.map(|krate| krate.download_and_extract())
.flat_map(|krate| {
krate.run_clippy_lints(&cargo_clippy_path, &counter, 1, num_crates, config.fix, &lint_filter)
})
.collect()
}
};
rayon::ThreadPoolBuilder::new()
.num_threads(config.max_jobs)
.build_global()
.unwrap();
let clippy_warnings: Vec<ClippyWarning> = crates
.par_iter()
.flat_map(|krate| krate.run_clippy_lints(&cargo_clippy_path, &counter, crates.len(), &config, &lint_filter))
.collect();
// if we are in --fix mode, don't change the log files, terminate here
if config.fix {
@ -837,7 +674,7 @@ pub fn main() {
text.push_str("| file | lint | message |\n");
text.push_str("| --- | --- | --- |\n");
}
write!(text, "{}", all_msgs.join(""));
write!(text, "{}", all_msgs.join("")).unwrap();
text.push_str("\n\n### ICEs:\n");
for (cratename, msg) in ices.iter() {
let _ = write!(text, "{}: '{}'", cratename, msg);
@ -949,75 +786,10 @@ fn create_dirs(krate_download_dir: &Path, extract_dir: &Path) {
});
}
fn get_clap_config<'a>() -> ArgMatches<'a> {
App::new("lintcheck")
.about("run clippy on a set of crates and check output")
.arg(
Arg::with_name("only")
.takes_value(true)
.value_name("CRATE")
.long("only")
.help("only process a single crate of the list"),
)
.arg(
Arg::with_name("crates-toml")
.takes_value(true)
.value_name("CRATES-SOURCES-TOML-PATH")
.long("crates-toml")
.help("set the path for a crates.toml where lintcheck should read the sources from"),
)
.arg(
Arg::with_name("threads")
.takes_value(true)
.value_name("N")
.short("j")
.long("jobs")
.help("number of threads to use, 0 automatic choice"),
)
.arg(
Arg::with_name("fix")
.long("--fix")
.help("runs cargo clippy --fix and checks if all suggestions apply"),
)
.arg(
Arg::with_name("filter")
.long("--filter")
.takes_value(true)
.multiple(true)
.value_name("clippy_lint_name")
.help("apply a filter to only collect specified lints, this also overrides `allow` attributes"),
)
.arg(
Arg::with_name("markdown")
.long("--markdown")
.help("change the reports table to use markdown links"),
)
.get_matches()
}
/// Returns the path to the Clippy project directory
///
/// # Panics
///
/// Panics if the current directory could not be retrieved, there was an error reading any of the
/// Cargo.toml files or ancestor directory is the clippy root directory
#[must_use]
pub fn clippy_project_root() -> PathBuf {
let current_dir = std::env::current_dir().unwrap();
for path in current_dir.ancestors() {
let result = std::fs::read_to_string(path.join("Cargo.toml"));
if let Err(err) = &result {
if err.kind() == std::io::ErrorKind::NotFound {
continue;
}
}
let content = result.unwrap();
if content.contains("[package]\nname = \"clippy\"") {
return path.to_path_buf();
}
}
panic!("error: Can't determine root of project. Please run inside a Clippy working dir.");
fn clippy_project_root() -> &'static Path {
Path::new(env!("CARGO_MANIFEST_DIR")).parent().unwrap()
}
#[test]