| package main |
| |
| /* |
| * 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. |
| */ |
| |
| import ( |
| "os" |
| "strconv" |
| |
| "github.com/apache/trafficcontrol/lib/go-log" |
| "github.com/apache/trafficcontrol/tc-health-client/config" |
| "github.com/apache/trafficcontrol/tc-health-client/tmagent" |
| ) |
| |
| const ( |
| Success = 0 |
| ConfigError = 166 |
| RunTimeError = 167 |
| PidFile = "/run/tc-health-client.pid" |
| ) |
| |
| // the BuildTimestamp and Version are set via ld flags |
| // when the RPM is built, see build/build_rpm.sh |
| var ( |
| BuildTimestamp = "" |
| Version = "" |
| ) |
| |
| func main() { |
| cfg, err, helpflag := config.GetConfig() |
| if err != nil { |
| log.Errorln(err.Error()) |
| os.Exit(ConfigError) |
| } |
| |
| if helpflag { // user used --help option |
| os.Exit(Success) |
| } |
| |
| log.Infof("Polling interval: %v seconds\n", config.GetTMPollingInterval().Seconds()) |
| tmInfo, err := tmagent.NewParentInfo(cfg) |
| if err != nil { |
| log.Errorf("startup could not initialize parent info, check that trafficserver is running: %s\n", err.Error()) |
| os.Exit(RunTimeError) |
| } |
| |
| pid := os.Getpid() |
| err = os.WriteFile(PidFile, []byte(strconv.Itoa(pid)), 0644) |
| if err != nil { |
| log.Errorf("could not write the process id to %s: %s", PidFile, err.Error()) |
| os.Exit(RunTimeError) |
| } |
| |
| log.Infof("startup complete, version: %s, built: %s\n", Version, BuildTimestamp) |
| |
| tmInfo.PollAndUpdateCacheStatus() |
| } |