@dalongrong/nacos-config
Version:
nacos config client
90 lines • 3.05 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Snapshot = void 0;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const interface_1 = require("./interface");
const path = require("path");
const assert = require("assert");
const Base = require('sdk-base');
const is = require('is-type-of');
const { mkdirp, rimraf } = require('mz-modules');
const debug = require('debug')('diamond-client:snapshot');
const fs = require('mz/fs');
class Snapshot extends Base {
constructor(options) {
super(options);
this.uuid = Math.random();
this.ready(true);
debug(this.uuid);
}
get cacheDir() {
return this.configuration.get(interface_1.ClientOptionKeys.CACHE_DIR);
}
get configuration() {
return this.options.configuration;
}
async get(key) {
const filepath = this.getSnapshotFile(key);
try {
const exists = await fs.exists(filepath);
if (exists) {
return await fs.readFile(filepath, 'utf8');
}
}
catch (err) {
err.name = 'SnapshotReadError';
this.emit('error', err);
}
return null;
}
async save(key, value) {
const filepath = this.getSnapshotFile(key);
const dir = path.dirname(filepath);
value = value || '';
try {
await mkdirp(dir);
await fs.writeFile(filepath, value);
}
catch (err) {
err.name = 'SnapshotWriteError';
err.key = key;
err.value = value;
this.emit('error', err);
}
}
async delete(key) {
const filepath = this.getSnapshotFile(key);
try {
await rimraf(filepath);
}
catch (err) {
err.name = 'SnapshotDeleteError';
err.key = key;
this.emit('error', err);
}
}
async batchSave(arr) {
assert(is.array(arr), '[diamond#Snapshot] batchSave(arr) arr should be an Array.');
await Promise.all(arr.map(({ key, value }) => this.save(key, value)));
}
getSnapshotFile(key) {
return path.join(this.cacheDir, 'snapshot', key);
}
}
exports.Snapshot = Snapshot;
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