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packager TransformCache.js: use directory specific to project 

Reviewed By: davidaurelio

Differential Revision: D4159761

fbshipit-source-id: 1f4b1bbcf4c4fbb834a672e38cb2cf55f425b28b
This commit is contained in:
Jean Lauliac 2016-11-11 05:04:13 -08:00 committed by Facebook Github Bot
parent ee637ee0eb
commit f13c4e3d78
1 changed files with 26 additions and 7 deletions
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33
react-packager/src/lib/TransformCache.js vendored
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@ -25,10 +25,28 @@ const rimraf = require('rimraf');
const writeFileAtomicSync = require('write-file-atomic').sync; const writeFileAtomicSync = require('write-file-atomic').sync;
const CACHE_NAME = 'react-native-packager-cache'; const CACHE_NAME = 'react-native-packager-cache';
const TMP_DIR = path.join(require('os').tmpdir(), CACHE_NAME);
type CacheFilePaths = {transformedCode: string, metadata: string}; type CacheFilePaths = {transformedCode: string, metadata: string};
/**
* If packager is running for two different directories, we don't want the
* caches to conflict with each other. `__dirname` carries that because packager
* will be, for example, installed in a different `node_modules/` folder for
* different projects.
*/
const getCacheDirPath = (function () {
let dirPath;
return function () {
if (dirPath == null) {
dirPath = path.join(
require('os').tmpdir(),
CACHE_NAME + '-' + imurmurhash(__dirname).result().toString(16),
);
}
return dirPath;
};
})();
function hashSourceCode(props: { function hashSourceCode(props: {
sourceCode: string, sourceCode: string,
transformCacheKey: string, transformCacheKey: string,
@ -52,7 +70,7 @@ function getCacheFilePaths(props: {
hash = Array(8 - hash.length + 1).join('0') + hash; hash = Array(8 - hash.length + 1).join('0') + hash;
const prefix = hash.substr(0, 2); const prefix = hash.substr(0, 2);
const fileName = `${hash.substr(2)}${path.basename(props.filePath)}`; const fileName = `${hash.substr(2)}${path.basename(props.filePath)}`;
const base = path.join(TMP_DIR, prefix, fileName); const base = path.join(getCacheDirPath(), prefix, fileName);
return {transformedCode: base, metadata: base + '.meta'}; return {transformedCode: base, metadata: base + '.meta'};
} }
@ -141,10 +159,11 @@ const GARBAGE_COLLECTOR = new (class GarbageCollector {
} }
_collectSync() { _collectSync() {
mkdirp.sync(TMP_DIR); const cacheDirPath = getCacheDirPath();
const prefixDirs = fs.readdirSync(TMP_DIR); mkdirp.sync(cacheDirPath);
const prefixDirs = fs.readdirSync(cacheDirPath);
for (let i = 0; i < prefixDirs.length; ++i) { for (let i = 0; i < prefixDirs.length; ++i) {
const prefixDir = path.join(TMP_DIR, prefixDirs[i]); const prefixDir = path.join(cacheDirPath, prefixDirs[i]);
const cacheFileNames = fs.readdirSync(prefixDir); const cacheFileNames = fs.readdirSync(prefixDir);
for (let j = 0; j < cacheFileNames.length; ++j) { for (let j = 0; j < cacheFileNames.length; ++j) {
const cacheFilePath = path.join(prefixDir, cacheFileNames[j]); const cacheFilePath = path.join(prefixDir, cacheFileNames[j]);
@ -172,13 +191,13 @@ const GARBAGE_COLLECTOR = new (class GarbageCollector {
console.error( console.error(
'Error: Cleaning up the cache folder failed. Continuing anyway.', 'Error: Cleaning up the cache folder failed. Continuing anyway.',
); );
console.error('The cache folder is: %s', TMP_DIR); console.error('The cache folder is: %s', getCacheDirPath());
} }
this._lastCollected = Date.now(); this._lastCollected = Date.now();
} }
_resetCache() { _resetCache() {
rimraf.sync(TMP_DIR); rimraf.sync(getCacheDirPath());
console.log('Warning: The transform cache was reset.'); console.log('Warning: The transform cache was reset.');
this._cacheWasReset = true; this._cacheWasReset = true;
this._lastCollected = Date.now(); this._lastCollected = Date.now();