initial commit

2024-11-22 13:57:10 +08:00 · 2020-09-25 16:42:39 +02:00 · 2020-09-25 16:42:39 +02:00 · 99970e092c
commit 99970e092c
12 changed files with 111031 additions and 0 deletions
--- a/.github/FUNDING.yml
+++ b/.github/FUNDING.yml
@ -0,0 +1 @@
+github: [Swatinem]
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+node_modules
--- a/README.md
+++ b/README.md
@ -0,0 +1,51 @@
+# Rust Cache Action
+
+A GitHub Action that implements smart caching for rust/cargo projects
+
+## Inputs
+
+- `key` - An optional key for the `target` cache. This is useful in case you
+  have different jobs for test / check / clippy, etc
+
+## Example usage
+
+```yaml
+- uses: Swatinem/rust-cache@v1
+  with:
+    key: test
+```
+
+## Specifics
+
+This action tries to be better than just caching the following directories:
+
+```
+~/.cargo/registry
+~/.cargo/git
+target
+```
+
+It disables incremental compilation and only caches dependencies. The
+assumption is that we will likely recompile the own crate(s) anyway.
+
+It also separates the cache into 4 groups, each treated differently:
+
+- Index: `~/.cargo/registry/index/<registry>`:
+
+  This is always restored from its latest snapshot, and persisted based on the
+  most recent revision.
+
+- Registry / Cache: `~/.cargo/registry/cache/<registry>`:
+
+  Automatically keyed by the lockfile/toml hash, and is being pruned to only
+  persist the dependencies that are being used.
+
+- Registry / Git: `~/.cargo/registry/git/<registry>`:
+
+  Automatically keyed by the lockfile/toml hash. Pruning is still TODO.
+
+- target: `./target`
+
+  Automatically keyed by the lockfile/toml hash, and is being pruned to only
+  persist the dependencies that are being used. This is especially throwing
+  away any intermediate artifacts.
--- a/action.yml
+++ b/action.yml
@ -0,0 +1,15 @@
+name: "Rust Cache"
+description: "A GitHub Action that implements smart caching for rust/cargo projects"
+author: "Arpad Borsos <arpad.borsos@googlemail.com>"
+inputs:
+  key:
+    description: "An explicit key for restoring and saving the target cache"
+    required: false
+runs:
+  using: "node12"
+  main: "dist/restore/index.js"
+  post: "dist/save/index.js"
+  post-if: "success()"
+branding:
+  icon: "archive"
+  color: "gray-dark"
--- a/dist/restore/index.js
+++ b/dist/restore/index.js
--- a/dist/save/index.js
+++ b/dist/save/index.js
--- a/package-lock.json
+++ b/package-lock.json
@ -0,0 +1,489 @@
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+  "name": "rust-cache",
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+      "dev": true
+    },
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+    },
+    "uuid": {
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+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
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+    "xml2js": {
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+      "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.23.tgz",
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+      "requires": {
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+        "xmlbuilder": "~11.0.0"
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+    "xmlbuilder": {
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+      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-11.0.1.tgz",
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+    }
+  }
+}
--- a/package.json
+++ b/package.json
@ -0,0 +1,36 @@
+{
+  "private": true,
+  "name": "rust-cache",
+  "version": "1.0.0",
+  "description": "A GitHub Action that implements smart caching for rust/cargo projects",
+  "keywords": [
+    "actions",
+    "rust",
+    "cache"
+  ],
+  "author": "Arpad Borsos <arpad.borsos@googlemail.com>",
+  "license": "LGPL-3.0",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Swatinem/rust-cache.git"
+  },
+  "bugs": {
+    "url": "https://github.com/Swatinem/rust-cache/issues"
+  },
+  "funding": "https://github.com/sponsors/Swatinem",
+  "homepage": "https://github.com/Swatinem/rust-cache#readme",
+  "dependencies": {
+    "@actions/cache": "^1.0.2",
+    "@actions/core": "^1.2.6",
+    "@actions/exec": "^1.0.4",
+    "@actions/glob": "^0.1.0",
+    "@actions/io": "^1.0.2"
+  },
+  "devDependencies": {
+    "@vercel/ncc": "^0.24.1",
+    "typescript": "^4.0.3"
+  },
+  "scripts": {
+    "prepare": "ncc build -o dist/restore src/restore.ts && ncc build -o dist/save src/save.ts"
+  }
+}
--- a/src/common.ts
+++ b/src/common.ts
@ -0,0 +1,124 @@
+import * as core from "@actions/core";
+import * as exec from "@actions/exec";
+import * as glob from "@actions/glob";
+import crypto from "crypto";
+import fs from "fs";
+import os from "os";
+import path from "path";
+
+const home = os.homedir();
+export const paths = {
+  index: path.join(home, ".cargo/registry/index"),
+  cache: path.join(home, ".cargo/registry/cache"),
+  git: path.join(home, ".cargo/git/db"),
+  target: "target",
+};
+
+export interface CacheConfig {
+  path: string;
+  key: string;
+  restoreKeys?: Array<string>;
+}
+
+export interface Caches {
+  index: CacheConfig;
+  cache: CacheConfig;
+  git: CacheConfig;
+  target: CacheConfig;
+}
+
+const RefKey = "GITHUB_REF";
+
+export function isValidEvent(): boolean {
+  return RefKey in process.env && Boolean(process.env[RefKey]);
+}
+
+export async function getCaches(): Promise<Caches> {
+  const rustKey = await getRustKey();
+  let lockHash = core.getState("lockHash");
+  if (!lockHash) {
+    lockHash = await getLockfileHash();
+    core.saveState("lockHash", lockHash);
+  }
+  let targetKey = core.getInput("key");
+  if (targetKey) {
+    targetKey = `${targetKey}-`;
+  }
+  return {
+    index: { path: paths.index, key: "registry-index-XXX", restoreKeys: ["registry-index"] },
+    cache: { path: paths.cache, key: `registry-cache-${lockHash}`, restoreKeys: ["registry-cache"] },
+    git: { path: paths.git, key: "git-db" },
+    target: {
+      path: paths.target,
+      key: `target-${targetKey}${rustKey}-${lockHash}`,
+      restoreKeys: [`target-${targetKey}${rustKey}`],
+    },
+  };
+}
+
+export async function getRustKey(): Promise<string> {
+  const rustc = await getRustVersion();
+  return `${rustc.release}-${rustc.host}-${rustc["commit-hash"]}`;
+}
+
+interface RustVersion {
+  host: string;
+  release: string;
+  "commit-hash": string;
+}
+
+export async function getRustVersion(): Promise<RustVersion> {
+  const stdout = await getCmdOutput("rustc", ["-vV"]);
+  let splits = stdout
+    .split(/[\n\r]+/)
+    .filter(Boolean)
+    .map((s) => s.split(":").map((s) => s.trim()))
+    .filter((s) => s.length === 2);
+  return Object.fromEntries(splits);
+}
+
+export async function getCmdOutput(
+  cmd: string,
+  args: Array<string> = [],
+  options: exec.ExecOptions = {},
+): Promise<string> {
+  let stdout = "";
+  await exec.exec(cmd, args, {
+    silent: true,
+    listeners: {
+      stdout(data) {
+        stdout += data.toString();
+      },
+    },
+    ...options,
+  });
+  return stdout;
+}
+
+export async function getRegistryName() {
+  const globber = await glob.create(`${paths.index}/**/.last-updated`, { followSymbolicLinks: false });
+  const files = await globber.glob();
+  if (files.length > 1) {
+    core.debug(`got multiple registries: "${files.join('", "')}"`);
+  }
+
+  const first = files.shift();
+  if (!first) {
+    return;
+  }
+  return path.basename(path.dirname(first));
+}
+
+export async function getLockfileHash() {
+  const globber = await glob.create("**/Cargo.toml\n**/Cargo.lock", { followSymbolicLinks: false });
+  const files = await globber.glob();
+  files.sort((a, b) => a.localeCompare(b));
+
+  const hasher = crypto.createHash("sha1");
+  for (const file of files) {
+    for await (const chunk of fs.createReadStream(file)) {
+      hasher.update(chunk);
+    }
+  }
+  return hasher.digest("hex");
+}
--- a/src/restore.ts
+++ b/src/restore.ts
@ -0,0 +1,35 @@
+import * as cache from "@actions/cache";
+import * as core from "@actions/core";
+import { getCaches, isValidEvent } from "./common";
+
+async function run() {
+  if (!isValidEvent()) {
+    return;
+  }
+
+  try {
+    core.exportVariable("CARGO_INCREMENTAL", 0);
+
+    const caches = await getCaches();
+    for (const [name, { path, key, restoreKeys }] of Object.entries(caches)) {
+      try {
+        core.startGroup(`Restoring "${path}" from "${key}"…`);
+        const restoreKey = await cache.restoreCache([path], key, restoreKeys);
+        if (restoreKey) {
+          core.info(`Restored "${path}" from cache key "${restoreKey}".`);
+          core.saveState(name, restoreKey);
+        } else {
+          core.info("No cache found.");
+        }
+      } catch (e) {
+        core.info(`[warning] ${e.message}`);
+      } finally {
+        core.endGroup();
+      }
+    }
+  } catch (e) {
+    core.info(`[warning] ${e.message}`);
+  }
+}
+
+run();
--- a/src/save.ts
+++ b/src/save.ts
@ -0,0 +1,133 @@
+import * as cache from "@actions/cache";
+import * as core from "@actions/core";
+import * as io from "@actions/io";
+import fs from "fs";
+import path from "path";
+import { getCaches, getCmdOutput, getRegistryName, isValidEvent, paths } from "./common";
+
+async function run() {
+  if (!isValidEvent()) {
+    //return;
+  }
+
+  try {
+    const caches = await getCaches();
+    const registryName = await getRegistryName();
+    const packages = await getPackages();
+
+    await pruneTarget(packages);
+    if (registryName) {
+      // save the index based on its revision
+      const indexRef = await getIndexRef(registryName);
+      caches.index.key = `registry-index-${indexRef}`;
+      await io.rmRF(path.join(paths.index, registryName, ".cache"));
+
+      await pruneRegistryCache(registryName, packages);
+    } else {
+      delete (caches as any).index;
+      delete (caches as any).cache;
+    }
+
+    for (const [name, { path, key }] of Object.entries(caches)) {
+      if (core.getState(name) === key) {
+        core.info(`Cache for "${path}" up-to-date.`);
+        continue;
+      }
+      try {
+        core.startGroup(`Saving "${path}" to cache key "${key}"…`);
+        if (await cache.saveCache([path], key)) {
+          core.info(`Saved "${path}" to cache key "${key}".`);
+        }
+      } catch (e) {
+        core.info(`[warning] ${e.message}`);
+      } finally {
+        core.endGroup();
+      }
+    }
+  } catch (e) {
+    core.info(`[warning] ${e.message}`);
+  }
+}
+
+run();
+
+async function getIndexRef(registryName: string) {
+  const cwd = path.join(paths.index, registryName);
+  return (await getCmdOutput("git", ["rev-parse", "--short", "origin/master"], { cwd })).trim();
+}
+
+interface PackageDefinition {
+  name: string;
+  version: string;
+}
+
+type Packages = Array<PackageDefinition>;
+
+async function getPackages(): Promise<Packages> {
+  const meta = JSON.parse(await getCmdOutput("cargo", ["metadata", "--format-version", "1"]));
+  return meta.packages.map(({ name, version }: any) => ({ name, version }));
+}
+
+async function pruneRegistryCache(registryName: string, packages: Packages) {
+  const pkgSet = new Set(packages.map((p) => `${p.name}-${p.version}.crate`));
+
+  const dir = await fs.promises.opendir(path.join(paths.cache, registryName));
+  for await (const dirent of dir) {
+    if (dirent.isFile() && !pkgSet.has(dirent.name)) {
+      const fileName = path.join(dir.path, dirent.name);
+      await fs.promises.unlink(fileName);
+      core.debug(`deleting "${fileName}"`);
+    }
+  }
+}
+
+async function pruneTarget(packages: Packages) {
+  await fs.promises.unlink("./target/.rustc_info.json");
+  await io.rmRF("./target/debug/examples");
+  await io.rmRF("./target/debug/incremental");
+  let dir: fs.Dir;
+
+  // remove all *files* from debug
+  dir = await fs.promises.opendir("./target/debug");
+  for await (const dirent of dir) {
+    if (dirent.isFile()) {
+      const fileName = path.join(dir.path, dirent.name);
+      await fs.promises.unlink(fileName);
+    }
+  }
+
+  const keepPkg = new Set(packages.map((p) => p.name));
+  await rmExcept("./target/debug/build", keepPkg);
+  await rmExcept("./target/debug/.fingerprint", keepPkg);
+
+  const keepDeps = new Set(
+    packages.flatMap((p) => {
+      const name = p.name.replace(/-/g, "_");
+      return [name, `lib${name}`];
+    }),
+  );
+  await rmExcept("./target/debug/deps", keepDeps);
+}
+
+const twoWeeks = 14 * 24 * 3600 * 1000;
+
+async function rmExcept(dirName: string, keepPrefix: Set<string>) {
+  const dir = await fs.promises.opendir(dirName);
+  for await (const dirent of dir) {
+    let name = dirent.name;
+    const idx = name.lastIndexOf("-");
+    if (idx !== -1) {
+      name = name.slice(0, idx);
+    }
+    const fileName = path.join(dir.path, dirent.name);
+    const { mtime } = await fs.promises.stat(fileName);
+    if (!keepPrefix.has(name) || Date.now() - mtime.getTime() > twoWeeks) {
+      core.debug(`deleting "${fileName}"`);
+      if (dirent.isFile()) {
+        await fs.promises.unlink(fileName);
+      } else if (dirent.isDirectory()) {
+        await io.rmRF(fileName);
+      }
+    }
+  }
+}
--- a/tsconfig.json
+++ b/tsconfig.json
@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "noEmitOnError": false,
+    "diagnostics": true,
+    "lib": ["esnext"],
+
+    "target": "es2017",
+
+    "resolveJsonModule": true,
+    "moduleResolution": "node",
+    "module": "esnext",
+    "esModuleInterop": true,
+
+    "strict": true,
+    "skipLibCheck": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true
+  },
+  "exclude": ["dist"]
+}