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main.go
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main.go
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// Copyright (C) 2017 Jan Delgado
package main
import (
"crypto/tls"
"os"
"os/signal"
"github.com/jandelgado/rabtap/pkg"
"github.com/sirupsen/logrus"
)
var log = logrus.New()
func initLogging(verbose bool) {
log.Formatter = &logrus.TextFormatter{
ForceColors: true,
}
log.Out = NewColorableWriter(os.Stderr)
if verbose {
log.SetLevel(logrus.DebugLevel)
} else {
log.SetLevel(logrus.WarnLevel)
}
}
func failOnError(err error, msg string, exitFunc func(int)) {
if err != nil {
log.Errorf("%s: %s", msg, err)
exitFunc(1)
}
}
func getTLSConfig(insecureTLS bool) *tls.Config {
return &tls.Config{InsecureSkipVerify: insecureTLS}
}
func startCmdInfo(args CommandLineArgs, title string) {
cmdInfo(CmdInfoArg{
rootNode: title,
client: rabtap.NewRabbitHTTPClient(args.APIURI, getTLSConfig(args.InsecureTLS)),
printConfig: BrokerInfoPrinterConfig{
ShowStats: args.ShowStats,
ShowConsumers: args.ShowConsumers,
ShowDefaultExchange: args.ShowDefaultExchange,
NoColor: args.NoColor},
out: NewColorableWriter(os.Stdout)})
}
func startCmdPublish(args CommandLineArgs) {
reader := os.Stdin
if args.PubFile != nil {
var err error
reader, err = os.Open(*args.PubFile)
failOnError(err, "error opening "+*args.PubFile, os.Exit)
}
readerFunc := createMessageReaderFunc(args.JSONFormat, reader)
cmdPublish(CmdPublishArg{
amqpURI: args.AmqpURI,
exchange: args.PubExchange,
routingKey: args.PubRoutingKey,
tlsConfig: getTLSConfig(args.InsecureTLS),
readNextMessageFunc: readerFunc})
}
func startCmdSubscribe(args CommandLineArgs) {
// signalChannel receives ctrl+C/interrput signal
signalChannel := make(chan os.Signal, 1)
signal.Notify(signalChannel, os.Interrupt)
// messageReceiveFunc receives the tapped messages, prints
// and optionally saves them.
messageReceiveFunc := createMessageReceiveFunc(
NewColorableWriter(os.Stdout), args.JSONFormat,
args.SaveDir, args.NoColor)
cmdSubscribe(CmdSubscribeArg{
amqpURI: args.AmqpURI,
queue: args.QueueName,
tlsConfig: getTLSConfig(args.InsecureTLS),
messageReceiveFunc: messageReceiveFunc,
signalChannel: signalChannel})
}
func startCmdTap(args CommandLineArgs) {
signalChannel := make(chan os.Signal, 1)
signal.Notify(signalChannel, os.Interrupt)
messageReceiveFunc := createMessageReceiveFunc(
NewColorableWriter(os.Stdout), args.JSONFormat,
args.SaveDir, args.NoColor)
cmdTap(args.TapConfig, getTLSConfig(args.InsecureTLS),
messageReceiveFunc, signalChannel)
}
func main() {
args, err := ParseCommandLineArgs(os.Args[1:])
if err != nil {
log.Fatal(err)
}
initLogging(args.Verbose)
log.Debugf("parsed cli-args: %+v", args)
tlsConfig := getTLSConfig(args.InsecureTLS)
switch args.Cmd {
case InfoCmd:
startCmdInfo(args, args.APIURI)
case SubCmd:
startCmdSubscribe(args)
case PubCmd:
startCmdPublish(args)
case TapCmd:
startCmdTap(args)
case ExchangeCreateCmd:
cmdExchangeCreate(CmdExchangeCreateArg{amqpURI: args.AmqpURI,
exchange: args.ExchangeName, exchangeType: args.ExchangeType,
durable: args.Durable, autodelete: args.Autodelete,
tlsConfig: tlsConfig})
case ExchangeRemoveCmd:
cmdExchangeRemove(args.AmqpURI, args.ExchangeName, tlsConfig)
case QueueCreateCmd:
cmdQueueCreate(CmdQueueCreateArg{amqpURI: args.AmqpURI,
queue: args.QueueName, durable: args.Durable,
autodelete: args.Autodelete, tlsConfig: tlsConfig})
case QueueRemoveCmd:
cmdQueueRemove(args.AmqpURI, args.QueueName, tlsConfig)
case QueueBindCmd:
cmdQueueBindToExchange(args.AmqpURI, args.QueueName,
args.QueueBindingKey, args.ExchangeName, tlsConfig)
case ConnCloseCmd:
cmdConnClose(args.APIURI, args.ConnName,
args.CloseReason, tlsConfig)
}
}