httpclient 是基于 net/http
封装的 Go HTTP 客户端请求包,支持常用的请求方式、常用设置,比如:
方法名 | 描述 |
---|---|
httpclient.Get() | GET 请求 |
httpclient.PostForm() | POST 请求,form 形式 |
httpclient.PostJSON() | POST 请求,json 形式 |
httpclient.PutForm() | PUT 请求,form 形式 |
httpclient.PutJSON() | PUT 请求,json 形式 |
httpclient.PatchForm() | PATCH 请求,form 形式 |
httpclient.PatchJSON() | PATCH 请求,json 形式 |
httpclient.Delete() | DELETE 请求 |
配置项 | 配置方法 |
---|---|
设置 TTL 本次请求最大超时时间 | httpclient.WithTTL(ttl time.Duration) |
设置 Header 信息 | httpclient.WithHeader(key, value string) |
设置 Logger 信息 | httpclient.WithLogger(logger *zap.Logger) |
设置 Trace 信息 | httpclient.WithTrace(t trace.T) |
设置 Mock 信息 | httpclient.WithMock(m Mock) |
设置失败时告警 | httpclient.WithOnFailedAlarm(alarmTitle string, alarmObject AlarmObject, alarmVerify AlarmVerify) |
设置失败时重试 | httpclient.WithOnFailedRetry(retryTimes int, retryDelay time.Duration, retryVerify RetryVerify) |
// 设置本次请求最大超时时间为 5s httpclient.WithTTL(time.Second*5),
可以调用多次进行设置多对 key-value 信息。
// 设置多对 key-value 信息,比如这样: httpclient.WithHeader("Authorization", "xxxx"), httpclient.WithHeader("Date", "xxxx"),
传递的 logger 便于 httpclient 打印日志。
// 使用上下文中的 logger,比如这样: httpclient.WithLogger(ctx.Logger()),
传递的 trace 便于记录使用 httpclient 调用第三方接口的链路日志。
// 使用上下文中的 trace,比如这样: httpclient.WithTrace(ctx.Trace()),
// Mock 类型 type Mock func() (body []byte) // 需实现 Mock 方法,比如这样: func MockDemoPost() (body []byte) { res := new(demoPostResponse) res.Code = 1 res.Msg = "ok" res.Data.Name = "mock_Name" res.Data.Job = "mock_Job" body, _ = json.Marshal(res) return body } // 使用时: httpclient.WithMock(MockDemoPost),
传递的 Mock 方式便于设置调用第三方接口的 Mock 数据。只要约定了接口文档,即使对方接口未开发时,也不影响数据联调。
// alarmTitle 设置失败告警标题 String // AlarmObject 告警通知对象,可以是邮件、短信或微信 type AlarmObject interface { Send(subject, body string) error } // 需要去实现 AlarmObject 接口,比如这样: var _ httpclient.AlarmObject = (*AlarmEmail)(nil) type AlarmEmail struct{} func (a *AlarmEmail) Send(subject, body string) error { options := &mail.Options{ MailHost: "smtp.163.com", MailPort: 465, MailUser: "xx@163.com", MailPass: "", MailTo: "", Subject: subject, Body: body, } return mail.Send(options) } // AlarmVerify 定义符合告警的验证规则 type AlarmVerify func(body []byte) (shouldAlarm bool) // 需要去实现 AlarmVerify 方法,比如这样: func alarmVerify(body []byte) (shouldalarm bool) { if len(body) == 0 { return true } type Response struct { Code int `json:"code"` } resp := new(Response) if err := json.Unmarshal(body, resp); err != nil { return true } // 当第三方接口返回的 code 不等于约定的成功值(1)时,就要进行告警 return resp.Code != 1 } // 使用时: httpclient.WithOnFailedAlarm("接口告警", new(third_party_request.AlarmEmail), alarmVerify),
// retryTimes 设置重试次数 Int,默认:3 // retryDelay 设置重试前延迟等待时间 time.Duration,默认:time.Millisecond * 100 // RetryVerify 定义符合重试的验证规则 type RetryVerify func(body []byte) (shouldRetry bool) // 需要去实现 RetryVerify 方法,比如这样: func retryVerify(body []byte) (shouldRetry bool) { if len(body) == 0 { return true } type Response struct { Code int `json:"code"` } resp := new(Response) if err := json.Unmarshal(body, resp); err != nil { return true } // 当第三方接口返回的 code 等于约定值(10010)时,就要进行重试 return resp.Code = 10010 } // RetryVerify 也可以为 nil , 当为 nil 时,默认重试规则为 http_code 为如下情况: // http.StatusRequestTimeout, 408 // http.StatusLocked, 423 // http.StatusTooEarly, 425 // http.StatusTooManyRequests, 429 // http.StatusServiceUnavailable, 503 // http.StatusGatewayTimeout, 504 // 使用时: httpclient.WithOnFailedRetry(3, time.Second*1, retryVerify),
// 以 httpclient.PostForm 为例 api := "http://127.0.0.1:9999/demo/post" params := url.Values{} params.Set("name", name) body, err := httpclient.PostForm(api, params, httpclient.WithTTL(time.Second*5), httpclient.WithTrace(ctx.Trace()), httpclient.WithLogger(ctx.Logger()), httpclient.WithHeader("Authorization", "xxxx"), httpclient.WithMock(MockDemoPost), httpclient.WithOnFailedRetry(3, time.Second*1, retryVerify), httpclient.WithOnFailedAlarm("接口告警", new(third_party_request.AlarmEmail), alarmVerify), ) if err != nil { return nil, err } res = new(demoPostResponse) err = json.Unmarshal(body, res) if err != nil { return nil, errors.Wrap(err, "DemoPost json unmarshal error") } if res.Code != 1 { return nil, errors.New(fmt.Sprintf("code err: %d-%s", res.Code, res.Msg)) } return res, nil
以上代码在 go-gin-api 项目中,地址:https://github.com/xinliangno...