| // |
| // Licensed to 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. Apache Software Foundation (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. |
| package trigger |
| |
| import ( |
| "context" |
| "fmt" |
| "net/http" |
| "os" |
| "strings" |
| "time" |
| |
| "github.com/apache/skywalking-infra-e2e/internal/logger" |
| ) |
| |
| type httpAction struct { |
| interval time.Duration |
| times int |
| url string |
| method string |
| executedCount int |
| } |
| |
| func NewHTTPAction(intervalStr string, times int, url, method string) Action { |
| interval, err := time.ParseDuration(intervalStr) |
| if err != nil { |
| logger.Log.Errorf("interval [%s] parse error: %s.", intervalStr, err) |
| return nil |
| } |
| |
| if interval <= 0 { |
| logger.Log.Errorf("interval [%s] is not positive", interval) |
| return nil |
| } |
| |
| // there can be env variables in url, say, "http://${GATEWAY_HOST}:${GATEWAY_PORT}/test" |
| url = os.ExpandEnv(url) |
| |
| return &httpAction{ |
| interval: interval, |
| times: times, |
| url: url, |
| method: strings.ToUpper(method), |
| executedCount: 0, |
| } |
| } |
| |
| func (h *httpAction) Do() error { |
| ctx := context.Background() |
| t := time.NewTicker(h.interval) |
| h.executedCount = 0 |
| client := &http.Client{} |
| request, err := http.NewRequest(h.method, h.url, nil) |
| if err != nil { |
| logger.Log.Errorf("new request error %v", err) |
| return err |
| } |
| |
| logger.Log.Infof("Trigger will request URL %s %d times, %s seconds apart each time.", h.url, h.times, h.interval) |
| |
| // execute until success |
| for range t.C { |
| err = h.executeOnce(client, request) |
| if err == nil { |
| break |
| } |
| if !h.couldContinue() { |
| logger.Log.Errorf("do request %d times, but still failed", h.times) |
| return err |
| } |
| } |
| |
| // background interval trigger |
| go func() { |
| for { |
| select { |
| case <-t.C: |
| err = h.executeOnce(client, request) |
| if !h.couldContinue() { |
| return |
| } |
| case <-ctx.Done(): |
| t.Stop() |
| return |
| } |
| } |
| }() |
| |
| return nil |
| } |
| |
| // execute http request once time |
| func (h *httpAction) executeOnce(client *http.Client, req *http.Request) error { |
| logger.Log.Debugf("request URL %s the %d time.", h.url, h.executedCount) |
| response, err := client.Do(req) |
| h.executedCount++ |
| if err != nil { |
| logger.Log.Errorf("do request error %v", err) |
| return err |
| } |
| _ = response.Body.Close() |
| |
| logger.Log.Debugf("do request %v response http code %v", h.url, response.StatusCode) |
| if response.StatusCode == http.StatusOK { |
| logger.Log.Debugf("do http action %+v success.", *h) |
| return nil |
| } |
| return fmt.Errorf("do request failed, response status code: %d", response.StatusCode) |
| } |
| |
| // verify http action could continue |
| func (h *httpAction) couldContinue() bool { |
| if h.times > 0 && h.times <= h.executedCount { |
| return false |
| } |
| return true |
| } |