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extern crate libc;
use std::collections::BTreeMap;
use std::fs::{OpenOptions, create_dir_all};
use std::io::ErrorKind;
use std::path::{Path, PathBuf};
use std::process;
use std::time::SystemTime;
use memoize::memoize;
use ci_cgi::{Ktestrc, ktestrc_read, read_lines, git_get_commit, commitdir_get_results_toml};
use multimap::MultiMap;
use die::die;
use glob::glob;
#[memoize]
fn get_subtests(test_path: PathBuf) -> Vec<String> {
let output = std::process::Command::new(&test_path)
.arg("list-tests")
.output()
.expect(&format!("failed to execute process {:?} ", &test_path))
.stdout;
let output = String::from_utf8_lossy(&output);
output
.split_whitespace()
.map(|i| i.to_string())
.collect()
}
fn lockfile_exists(rc: &Ktestrc, commit: &str, test_name: &str, create: bool) -> bool {
let lockfile = rc.ci_output_dir.join(commit).join(test_name).join("status");
let timeout = std::time::Duration::from_secs(3600);
let metadata = std::fs::metadata(&lockfile);
if let Ok(metadata) = metadata {
let elapsed = metadata.modified().unwrap()
.elapsed()
.unwrap_or(std::time::Duration::from_secs(0));
if metadata.is_file() &&
metadata.len() == 0 &&
elapsed > timeout &&
std::fs::remove_file(&lockfile).is_ok() {
eprintln!("Deleted stale lock file {:?}, mtime {:?} now {:?} elapsed {:?})",
&lockfile, metadata.modified().unwrap(),
SystemTime::now(),
elapsed);
}
}
if !create {
lockfile.exists()
} else {
let dir = lockfile.parent().unwrap();
let r = create_dir_all(dir);
if let Err(e) = r {
if e.kind() != ErrorKind::AlreadyExists {
die!("error creating {:?}: {}", dir, e);
}
}
let r = OpenOptions::new()
.write(true)
.create_new(true)
.open(&lockfile);
if let Err(ref e) = r {
if e.kind() != ErrorKind::AlreadyExists {
die!("error creating {:?}: {}", lockfile, e);
}
}
r.is_ok()
}
}
struct TestJob {
branch: String,
commit: String,
age: usize,
test: PathBuf,
subtests: Vec<String>,
}
fn subtest_full_name(test_path: &Path, subtest: &String) -> String {
format!("{}.{}",
test_path.file_stem().unwrap().to_string_lossy(),
subtest.replace("/", "."))
}
fn branch_get_next_test_job(rc: &Ktestrc, repo: &git2::Repository,
branch: &str, test_path: &Path) -> Option<TestJob> {
let mut ret = TestJob {
branch: branch.to_string(),
commit: String::new(),
age: 0,
test: test_path.to_path_buf(),
subtests: Vec::new(),
};
let subtests = get_subtests(PathBuf::from(test_path));
let mut walk = repo.revwalk().unwrap();
let reference = git_get_commit(&repo, branch.to_string());
if reference.is_err() {
eprintln!("branch {} not found", branch);
return None;
}
let reference = reference.unwrap();
if let Err(e) = walk.push(reference.id()) {
eprintln!("Error walking {}: {}", branch, e);
return None;
}
for commit in walk
.filter_map(|i| i.ok())
.filter_map(|i| repo.find_commit(i).ok()) {
let commit = commit.id().to_string();
ret.commit = commit.clone();
let results = commitdir_get_results_toml(rc, &commit).unwrap_or(BTreeMap::new());
for subtest in subtests.iter() {
let full_subtest_name = subtest_full_name(test_path, &subtest);
if results.get(&full_subtest_name).is_none() &&
!lockfile_exists(rc, &commit, &full_subtest_name, false) {
ret.subtests.push(subtest.to_string());
if ret.subtests.len() > 20 {
break;
}
}
}
if !ret.subtests.is_empty() {
return Some(ret);
}
ret.age += 1;
if ret.age > 50 {
break;
}
}
None
}
fn get_best_test_job(rc: &Ktestrc, repo: &git2::Repository,
branch_tests: &MultiMap<String, PathBuf>) -> Option<TestJob> {
let mut ret: Option<TestJob> = None;
for (branch, testvec) in branch_tests.iter_all() {
for test in testvec {
let job = branch_get_next_test_job(rc, repo, branch, test);
let ret_age = ret.as_ref().map_or(std::usize::MAX, |x| x.age);
let job_age = job.as_ref().map_or(std::usize::MAX, |x| x.age);
if job_age < ret_age {
ret = job;
}
}
}
ret
}
fn create_job_lockfiles(rc: &Ktestrc, mut job: TestJob) -> Option<TestJob> {
job.subtests = job.subtests.iter()
.filter(|i| lockfile_exists(rc, &job.commit,
&subtest_full_name(&Path::new(&job.test), &i), true))
.map(|i| i.to_string())
.collect();
if !job.subtests.is_empty() { Some(job) } else { None }
}
fn main() {
let ktestrc = ktestrc_read();
if let Err(e) = ktestrc {
eprintln!("could not read config; {}", e);
process::exit(1);
}
let ktestrc = ktestrc.unwrap();
let repo = git2::Repository::open(&ktestrc.ci_linux_repo);
if let Err(e) = repo {
eprintln!("Error opening {:?}: {}", ktestrc.ci_linux_repo, e);
eprintln!("Please specify correct ci_linux_repo");
process::exit(1);
}
let repo = repo.unwrap();
let _r = std::process::Command::new("flock")
.arg("--nonblock")
.arg(".git_fetch.lock")
.arg("git").arg("fetch").arg("--all")
.current_dir(&ktestrc.ci_linux_repo)
.output();
let lines = read_lines(&ktestrc.ci_branches_to_test);
if let Err(e) = lines {
eprintln!("Error opening {:?}: {}", ktestrc.ci_branches_to_test, e);
eprintln!("Please specify correct ci_branches_to_test");
process::exit(1);
}
let lines = lines.unwrap();
let lines = lines.filter_map(|i| i.ok());
let mut branch_tests: MultiMap<String, PathBuf > = MultiMap::new();
for l in lines {
let l: Vec<_> = l.split_whitespace().take(2).collect();
if l.len() == 2 {
let branch = l[0];
let test = l[1];
for i in glob(test).expect(&format!("No tests matching {}", test))
.filter_map(|i| i.ok()) {
branch_tests.insert(branch.to_string(), i);
}
}
}
let mut job: Option<TestJob>;
loop {
job = get_best_test_job(&ktestrc, &repo, &branch_tests);
if job.is_none() {
break;
}
job = create_job_lockfiles(&ktestrc, job.unwrap());
if let Some(job) = job {
print!("{} {} {}", job.branch, job.commit, job.test.display());
for t in job.subtests {
print!(" {}", t);
}
println!("");
break;
}
}
}
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