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cleanup.ts
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cleanup.ts
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import * as core from "@actions/core";
import * as io from "@actions/io";
import fs from "fs";
import path from "path";
import { CARGO_HOME, STATE_BINS } from "./config";
import { Packages } from "./workspace";
export async function cleanTargetDir(targetDir: string, packages: Packages, checkTimestamp = false) {
core.debug(`cleaning target directory "${targetDir}"`);
// remove all *files* from the profile directory
let dir = await fs.promises.opendir(targetDir);
for await (const dirent of dir) {
if (dirent.isDirectory()) {
let dirName = path.join(dir.path, dirent.name);
// is it a profile dir, or a nested target dir?
let isNestedTarget =
(await exists(path.join(dirName, "CACHEDIR.TAG"))) || (await exists(path.join(dirName, ".rustc_info.json")));
try {
if (isNestedTarget) {
await cleanTargetDir(dirName, packages, checkTimestamp);
} else {
await cleanProfileTarget(dirName, packages, checkTimestamp);
}
} catch {}
} else if (dirent.name !== "CACHEDIR.TAG") {
await rm(dir.path, dirent);
}
}
}
async function cleanProfileTarget(profileDir: string, packages: Packages, checkTimestamp = false) {
core.debug(`cleaning profile directory "${profileDir}"`);
let keepProfile = new Set(["build", ".fingerprint", "deps"]);
await rmExcept(profileDir, keepProfile);
const keepPkg = new Set(packages.map((p) => p.name));
await rmExcept(path.join(profileDir, "build"), keepPkg, checkTimestamp);
await rmExcept(path.join(profileDir, ".fingerprint"), keepPkg, checkTimestamp);
const keepDeps = new Set(
packages.flatMap((p) => {
const names = [];
for (const n of [p.name, ...p.targets]) {
const name = n.replace(/-/g, "_");
names.push(name, `lib${name}`);
}
return names;
}),
);
await rmExcept(path.join(profileDir, "deps"), keepDeps, checkTimestamp);
}
export async function getCargoBins(): Promise<Set<string>> {
const bins = new Set<string>();
try {
const { installs }: { installs: { [key: string]: { bins: Array<string> } } } = JSON.parse(
await fs.promises.readFile(path.join(CARGO_HOME, ".crates2.json"), "utf8"),
);
for (const pkg of Object.values(installs)) {
for (const bin of pkg.bins) {
bins.add(bin);
}
}
} catch {}
return bins;
}
export async function cleanBin() {
const bins = await getCargoBins();
const oldBins = JSON.parse(core.getState(STATE_BINS));
for (const bin of oldBins) {
bins.delete(bin);
}
const dir = await fs.promises.opendir(path.join(CARGO_HOME, "bin"));
for await (const dirent of dir) {
if (dirent.isFile() && !bins.has(dirent.name)) {
await rm(dir.path, dirent);
}
}
}
export async function cleanRegistry(packages: Packages) {
// `.cargo/registry/src`
// we can remove this completely, as cargo will recreate this from `cache`
await rmRF(path.join(CARGO_HOME, "registry", "src"));
// `.cargo/registry/index`
const indexDir = await fs.promises.opendir(path.join(CARGO_HOME, "registry", "index"));
for await (const dirent of indexDir) {
if (dirent.isDirectory()) {
// eg `.cargo/registry/index/github.com-1ecc6299db9ec823`
// or `.cargo/registry/index/index.crates.io-e139d0d48fed7772`
const dirPath = path.join(indexDir.path, dirent.name);
// for a git registry, we can remove `.cache`, as cargo will recreate it from git
if (await exists(path.join(dirPath, ".git"))) {
await rmRF(path.join(dirPath, ".cache"));
}
// TODO: else, clean `.cache` based on the `packages`
}
}
const pkgSet = new Set(packages.map((p) => `${p.name}-${p.version}.crate`));
// `.cargo/registry/cache`
const cacheDir = await fs.promises.opendir(path.join(CARGO_HOME, "registry", "cache"));
for await (const dirent of cacheDir) {
if (dirent.isDirectory()) {
// eg `.cargo/registry/cache/github.com-1ecc6299db9ec823`
// or `.cargo/registry/cache/index.crates.io-e139d0d48fed7772`
const dir = await fs.promises.opendir(path.join(cacheDir.path, dirent.name));
for await (const dirent of dir) {
// here we check that the downloaded `.crate` matches one from our dependencies
if (dirent.isFile() && !pkgSet.has(dirent.name)) {
await rm(dir.path, dirent);
}
}
}
}
}
export async function cleanGit(packages: Packages) {
const coPath = path.join(CARGO_HOME, "git", "checkouts");
const dbPath = path.join(CARGO_HOME, "git", "db");
const repos = new Map<string, Set<string>>();
for (const p of packages) {
if (!p.path.startsWith(coPath)) {
continue;
}
const [repo, ref] = p.path.slice(coPath.length + 1).split(path.sep);
const refs = repos.get(repo);
if (refs) {
refs.add(ref);
} else {
repos.set(repo, new Set([ref]));
}
}
// we have to keep both the clone, and the checkout, removing either will
// trigger a rebuild
// clean the db
try {
let dir = await fs.promises.opendir(dbPath);
for await (const dirent of dir) {
if (!repos.has(dirent.name)) {
await rm(dir.path, dirent);
}
}
} catch {}
// clean the checkouts
try {
let dir = await fs.promises.opendir(coPath);
for await (const dirent of dir) {
const refs = repos.get(dirent.name);
if (!refs) {
await rm(dir.path, dirent);
continue;
}
if (!dirent.isDirectory()) {
continue;
}
const refsDir = await fs.promises.opendir(path.join(dir.path, dirent.name));
for await (const dirent of refsDir) {
if (!refs.has(dirent.name)) {
await rm(refsDir.path, dirent);
}
}
}
} catch {}
}
const ONE_WEEK = 7 * 24 * 3600 * 1000;
/**
* Removes all files or directories in `dirName` matching some criteria.
*
* When the `checkTimestamp` flag is set, this will also remove anything older
* than one week.
*
* Otherwise, it will remove everything that does not match any string in the
* `keepPrefix` set.
* The matching strips and trailing `-$hash` suffix.
*/
async function rmExcept(dirName: string, keepPrefix: Set<string>, checkTimestamp = false) {
const dir = await fs.promises.opendir(dirName);
for await (const dirent of dir) {
if (checkTimestamp) {
const fileName = path.join(dir.path, dirent.name);
const { mtime } = await fs.promises.stat(fileName);
const isOutdated = Date.now() - mtime.getTime() > ONE_WEEK;
if (isOutdated) {
await rm(dir.path, dirent);
}
return;
}
let name = dirent.name;
// strip the trailing hash
const idx = name.lastIndexOf("-");
if (idx !== -1) {
name = name.slice(0, idx);
}
if (!keepPrefix.has(name)) {
await rm(dir.path, dirent);
}
}
}
async function rm(parent: string, dirent: fs.Dirent) {
try {
const fileName = path.join(parent, dirent.name);
core.debug(`deleting "${fileName}"`);
if (dirent.isFile()) {
await fs.promises.unlink(fileName);
} else if (dirent.isDirectory()) {
await io.rmRF(fileName);
}
} catch {}
}
async function rmRF(dirName: string) {
core.debug(`deleting "${dirName}"`);
await io.rmRF(dirName);
}
async function exists(path: string) {
try {
await fs.promises.access(path);
return true;
} catch {
return false;
}
}