acm-client/dist/snapshot.js

aliyun acm client

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Base = require('sdk-base');
const fs = require('mz/fs');
const path = require('path');
const osenv = require('osenv');
const assert = require('assert');
const is = require('is-type-of');
const { mkdirp, rimraf } = require('mz-modules');
const debug = require('debug')('diamond-client:snapshot');
const DEFAULT_OPITONS = {
    cacheDir: path.join(osenv.home(), '.node-diamond-client-cache'),
};
class Snapshot extends Base {
    constructor(options) {
        super(Object.assign({}, DEFAULT_OPITONS, options));
        this.uuid = Math.random();
        this.cacheDir = this.options.cacheDir;
        this.ready(true);
        debug(this.uuid);
    }
    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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