setup-java/src/cache.ts
2022-04-25 13:40:12 +02:00

157 lines
5.5 KiB
TypeScript

/**
* @fileoverview this file provides methods handling dependency cache
*/
import { join } from 'path';
import os from 'os';
import * as cache from '@actions/cache';
import * as core from '@actions/core';
import * as glob from '@actions/glob';
const STATE_CACHE_PRIMARY_KEY = 'cache-primary-key';
const CACHE_MATCHED_KEY = 'cache-matched-key';
const CACHE_KEY_PREFIX = 'setup-java';
interface PackageManager {
id: 'maven' | 'gradle' | 'sbt';
/**
* Paths of the file that specify the files to cache.
*/
path: string[];
pattern: string[];
}
const supportedPackageManager: PackageManager[] = [
{
id: 'maven',
path: [join(os.homedir(), '.m2', 'repository')],
// https://github.com/actions/cache/blob/0638051e9af2c23d10bb70fa9beffcad6cff9ce3/examples.md#java---maven
pattern: ['**/pom.xml']
},
{
id: 'gradle',
path: [join(os.homedir(), '.gradle', 'caches'), join(os.homedir(), '.gradle', 'wrapper')],
// https://github.com/actions/cache/blob/0638051e9af2c23d10bb70fa9beffcad6cff9ce3/examples.md#java---gradle
pattern: [
'**/*.gradle*',
'**/gradle-wrapper.properties',
'buildSrc/**/Versions.kt',
'buildSrc/**/Dependencies.kt'
]
},
{
id: 'sbt',
path: [
join(os.homedir(), '.ivy2', 'cache'),
join(os.homedir(), '.sbt'),
getCoursierCachePath()
],
pattern: ['**/*.sbt', '**/project/build.properties', '**/project/**.{scala,sbt}']
}
];
function getCoursierCachePath(): string {
if (os.type() === 'Linux') return join(os.homedir(), '.cache', 'coursier');
if (os.type() === 'Darwin') return join(os.homedir(), 'Library', 'Caches', 'Coursier');
return join(os.homedir(), 'AppData', 'Local', 'Coursier', 'Cache');
}
function findPackageManager(id: string): PackageManager {
const packageManager = supportedPackageManager.find(packageManager => packageManager.id === id);
if (packageManager === undefined) {
throw new Error(`unknown package manager specified: ${id}`);
}
return packageManager;
}
/**
* A function that generates a cache key to use.
* Format of the generated key will be "${{ platform }}-${{ id }}-${{ fileHash }}"".
* If there is no file matched to {@link PackageManager.path}, the generated key ends with a dash (-).
* @see {@link https://docs.github.com/en/actions/guides/caching-dependencies-to-speed-up-workflows#matching-a-cache-key|spec of cache key}
*/
async function computeCacheKey(packageManager: PackageManager) {
const hash = await glob.hashFiles(packageManager.pattern.join('\n'));
return `${CACHE_KEY_PREFIX}-${process.env['RUNNER_OS']}-${packageManager.id}-${hash}`;
}
/**
* Restore the dependency cache
* @param id ID of the package manager, should be "maven" or "gradle"
*/
export async function restore(id: string) {
const packageManager = findPackageManager(id);
const primaryKey = await computeCacheKey(packageManager);
core.debug(`primary key is ${primaryKey}`);
core.saveState(STATE_CACHE_PRIMARY_KEY, primaryKey);
if (primaryKey.endsWith('-')) {
throw new Error(
`No file in ${process.cwd()} matched to [${
packageManager.pattern
}], make sure you have checked out the target repository`
);
}
const matchedKey = await cache.restoreCache(packageManager.path, primaryKey, [
`${CACHE_KEY_PREFIX}-${process.env['RUNNER_OS']}-${id}`
]);
if (matchedKey) {
core.saveState(CACHE_MATCHED_KEY, matchedKey);
core.setOutput('cache-hit', matchedKey === primaryKey);
core.info(`Cache restored from key: ${matchedKey}`);
} else {
core.setOutput('cache-hit', false);
core.info(`${packageManager.id} cache is not found`);
}
}
/**
* Save the dependency cache
* @param id ID of the package manager, should be "maven" or "gradle"
*/
export async function save(id: string) {
const packageManager = findPackageManager(id);
const matchedKey = core.getState(CACHE_MATCHED_KEY);
// Inputs are re-evaluted before the post action, so we want the original key used for restore
const primaryKey = core.getState(STATE_CACHE_PRIMARY_KEY);
if (!primaryKey) {
core.warning('Error retrieving key from state.');
return;
} else if (matchedKey === primaryKey) {
// no change in target directories
core.info(`Cache hit occurred on the primary key ${primaryKey}, not saving cache.`);
return;
}
try {
await cache.saveCache(packageManager.path, primaryKey);
core.info(`Cache saved with the key: ${primaryKey}`);
} catch (error) {
if (error.name === cache.ReserveCacheError.name) {
core.info(error.message);
} else {
if (isProbablyGradleDaemonProblem(packageManager, error)) {
core.warning(
'Failed to save Gradle cache on Windows. If tar.exe reported "Permission denied", try to run Gradle with `--no-daemon` option. Refer to https://github.com/actions/cache/issues/454 for details.'
);
}
throw error;
}
}
}
/**
* @param packageManager the specified package manager by user
* @param error the error thrown by the saveCache
* @returns true if the given error seems related to the {@link https://github.com/actions/cache/issues/454|running Gradle Daemon issue}.
* @see {@link https://github.com/actions/cache/issues/454#issuecomment-840493935|why --no-daemon is necessary}
*/
function isProbablyGradleDaemonProblem(packageManager: PackageManager, error: Error) {
if (packageManager.id !== 'gradle' || process.env['RUNNER_OS'] !== 'Windows') {
return false;
}
const message = error.message || '';
return message.startsWith('Tar failed with error: ');
}