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main.go
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main.go
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/*
Copyright 2014 Outbrain Inc.
Licensed 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 main
import (
"flag"
_ "github.com/go-sql-driver/mysql"
_ "github.com/mattn/go-sqlite3"
"vitess.io/vitess/go/vt/orchestrator/app"
"vitess.io/vitess/go/vt/orchestrator/config"
"vitess.io/vitess/go/vt/orchestrator/external/golib/log"
"vitess.io/vitess/go/vt/orchestrator/inst"
)
var AppVersion, GitCommit string
// main is the application's entry point. It will either spawn a CLI or HTTP itnerfaces.
func main() {
// TODO(sougou): change this to use vitess servenv framework
// TODO(sougou): remove cli code
configFile := flag.String("config", "", "config file name")
sibling := flag.String("s", "", "sibling instance, host_fqdn[:port]")
destination := flag.String("d", "", "destination instance, host_fqdn[:port] (synonym to -s)")
discovery := flag.Bool("discovery", true, "auto discovery mode")
quiet := flag.Bool("quiet", false, "quiet")
verbose := flag.Bool("verbose", false, "verbose")
debug := flag.Bool("debug", false, "debug mode (very verbose)")
stack := flag.Bool("stack", false, "add stack trace upon error")
config.RuntimeCLIFlags.SkipUnresolve = flag.Bool("skip-unresolve", false, "Do not unresolve a host name")
config.RuntimeCLIFlags.SkipUnresolveCheck = flag.Bool("skip-unresolve-check", false, "Skip/ignore checking an unresolve mapping (via hostname_unresolve table) resolves back to same hostname")
config.RuntimeCLIFlags.Noop = flag.Bool("noop", false, "Dry run; do not perform destructing operations")
config.RuntimeCLIFlags.BinlogFile = flag.String("binlog", "", "Binary log file name")
config.RuntimeCLIFlags.Statement = flag.String("statement", "", "Statement/hint")
config.RuntimeCLIFlags.GrabElection = flag.Bool("grab-election", false, "Grab leadership (only applies to continuous mode)")
config.RuntimeCLIFlags.PromotionRule = flag.String("promotion-rule", "prefer", "Promotion rule for register-andidate (prefer|neutral|prefer_not|must_not)")
config.RuntimeCLIFlags.SkipContinuousRegistration = flag.Bool("skip-continuous-registration", false, "Skip cli commands performaing continuous registration (to reduce orchestratrator backend db load")
config.RuntimeCLIFlags.EnableDatabaseUpdate = flag.Bool("enable-database-update", false, "Enable database update, overrides SkipOrchestratorDatabaseUpdate")
config.RuntimeCLIFlags.IgnoreRaftSetup = flag.Bool("ignore-raft-setup", false, "Override RaftEnabled for CLI invocation (CLI by default not allowed for raft setups). NOTE: operations by CLI invocation may not reflect in all raft nodes.")
config.RuntimeCLIFlags.Tag = flag.String("tag", "", "tag to add ('tagname' or 'tagname=tagvalue') or to search ('tagname' or 'tagname=tagvalue' or comma separated 'tag0,tag1=val1,tag2' for intersection of all)")
flag.Parse()
if *destination != "" && *sibling != "" {
log.Fatalf("-s and -d are synonyms, yet both were specified. You're probably doing the wrong thing.")
}
switch *config.RuntimeCLIFlags.PromotionRule {
case "prefer", "neutral", "prefer_not", "must_not":
{
// OK
}
default:
{
log.Fatalf("-promotion-rule only supports prefer|neutral|prefer_not|must_not")
}
}
if *destination == "" {
*destination = *sibling
}
log.SetLevel(log.ERROR)
if *verbose {
log.SetLevel(log.INFO)
}
if *debug {
log.SetLevel(log.DEBUG)
}
if *stack {
log.SetPrintStackTrace(*stack)
}
startText := "starting orchestrator"
if AppVersion != "" {
startText += ", version: " + AppVersion
}
if GitCommit != "" {
startText += ", git commit: " + GitCommit
}
log.Info(startText)
if len(*configFile) > 0 {
config.ForceRead(*configFile)
} else {
config.Read("/etc/orchestrator.conf.json", "conf/orchestrator.conf.json", "orchestrator.conf.json")
}
if *config.RuntimeCLIFlags.EnableDatabaseUpdate {
config.Config.SkipOrchestratorDatabaseUpdate = false
}
if config.Config.Debug {
log.SetLevel(log.DEBUG)
}
if *quiet {
// Override!!
log.SetLevel(log.ERROR)
}
if config.Config.EnableSyslog {
log.EnableSyslogWriter("orchestrator")
log.SetSyslogLevel(log.INFO)
}
if config.Config.AuditToSyslog {
inst.EnableAuditSyslog()
}
config.RuntimeCLIFlags.ConfiguredVersion = AppVersion
config.MarkConfigurationLoaded()
helpTopic := ""
if flag.Arg(0) == "help" {
if flag.Arg(1) != "" {
helpTopic = flag.Arg(1)
}
}
switch {
case helpTopic != "":
app.HelpCommand(helpTopic)
default:
app.Http(*discovery)
}
}