chushihua

2026-01-26 23:20:48 +08:00
commit 7b5aab0206
22521 changed files with 3300090 additions and 0 deletions
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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+var createInnerCallback = require("./createInnerCallback");
+
+function UnsafeCachePlugin(source, filterPredicate, cache, withContext, target) {
+	this.source = source;
+	this.filterPredicate = filterPredicate;
+	this.withContext = withContext;
+	this.cache = cache || {};
+	this.target = target;
+}
+module.exports = UnsafeCachePlugin;
+
+function getCacheId(request, withContext) {
+	return JSON.stringify({
+		context: withContext ? request.context : "",
+		path: request.path,
+		query: request.query,
+		request: request.request
+	});
+}
+
+UnsafeCachePlugin.prototype.apply = function(resolver) {
+	var filterPredicate = this.filterPredicate;
+	var cache = this.cache;
+	var target = this.target;
+	var withContext = this.withContext;
+	resolver.plugin(this.source, function(request, callback) {
+		if(!filterPredicate(request)) return callback();
+		var cacheId = getCacheId(request, withContext);
+		var cacheEntry = cache[cacheId];
+		if(cacheEntry) {
+			return callback(null, cacheEntry);
+		}
+		resolver.doResolve(target, request, null, createInnerCallback(function(err, result) {
+			if(err) return callback(err);
+			if(result) return callback(null, cache[cacheId] = result);
+			callback();
+		}, callback));
+	});
+};