基于Redis的分布式服务框架,传输层使用super-queue消息队列模块。
$ npm install clouds --save
var clouds = require('clouds');
// 创建服务提供者
var server = new clouds.Server({
// redis连接配置
redis: {
host: '127.0.0.1',
port: 6379,
db: 3
},
// 心跳周期,如果服务提供者异常下线,超过指定时间将自动从服务器端删除,单位:秒
heartbeat: 2
});
// 注册服务处理程序
server.register('test.hello', function (name, msg, callback) {
// 函数的最后一个参数表示回调函数,客户端在调用的时候必须保证参数数量是一致的
// 回调函数第一个参数表示是否出错,第二个参数起表示返回的结果
callback(null, 'Hello ' + name + ', ' + msg);
});
const clouds = require('clouds');
const client = new clouds.Client({
// redis连接配置
redis: {
host: '127.0.0.1',
port: 6379,
db: 3
},
// 调用超时时间,如果服务器超过指定时间没有响应结果,则认为调用失败,单位:秒
timeout: 2
// 本地超时检查(timeout的倍数),默认为1.1,小于1表示不进行本地检查(如果没有启动server端,可能会导致回调无法执行)
timeoutChecker: 1.1,
// 心跳周期,如果服务提供者异常下线,超过指定时间将自动从服务器端删除,单位:秒
heartbeat: 2
});
// 返回一个函数,用于直接调用远程服务
const testHello = client.bind('test.hello');
client.ready(() => {
// 当所有bind()的函数都已经准备就绪时只需回调
});
// 调用远程服务,跟使用本地普通函数差不多
testHello('Glen', 'timestamp is ' + Date.now(), (err, ret) => {
console.log(err, ret);
});
// 也可以这样直接调用,第一个参数是服务名,第二个参数是调用参数数组,第三个参数是回调函数
client.call('test.hello', ['Glen', 'timestamp is ' + Date.now()], (err, ret) => {
console.log(err, ret);
});
var clouds = require('clouds');
// 创建服务器
var monitor = new clouds.Monitor({
// redis连接配置
redis: {
host: '127.0.0.1',
port: 6379,
db: 3
}
});
// 获取状态
monitor.status(function (err, info) {
console.log(err, info);
// info.methods服务名对应的服务器ID列表
// info.servers服务器对应的服务名列表
});
Copyright (c) 2012-2016 Zongmin Lei (雷宗民) <leizongmin@gmail.com>
http://ucdok.com
The MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
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permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.