112 lines
3.1 KiB
Go
112 lines
3.1 KiB
Go
/*
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© Copyright IBM Corporation 2017, 2018
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"sync"
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"github.com/ibm-messaging/mq-container/internal/logger"
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"github.com/ibm-messaging/mq-container/internal/mqini"
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)
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// var debug = false
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var log *logger.Logger
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func logDebug(args ...interface{}) {
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log.Debug(args)
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}
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func logDebugf(format string, args ...interface{}) {
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log.Debugf(format, args...)
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}
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func logTerminationf(format string, args ...interface{}) {
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logTermination(fmt.Sprintf(format, args))
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}
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func logTermination(args ...interface{}) {
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msg := fmt.Sprint(args)
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// Write the message to the termination log. This is the default place
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// that Kubernetes will look for termination information.
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log.Debugf("Writing termination message: %v", msg)
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err := ioutil.WriteFile("/dev/termination-log", []byte(msg), 0660)
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if err != nil {
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log.Debug(err)
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}
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log.Error(msg)
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}
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func getLogFormat() string {
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return os.Getenv("LOG_FORMAT")
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}
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func formatSimple(datetime string, message string) string {
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return fmt.Sprintf("%v %v\n", datetime, message)
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}
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// mirrorSystemErrorLogs starts a goroutine to mirror the contents of the MQ system error logs
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func mirrorSystemErrorLogs(ctx context.Context, wg *sync.WaitGroup, mf mirrorFunc) (chan error, error) {
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// Always use the JSON log as the source
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return mirrorLog(ctx, wg, "/var/mqm/errors/AMQERR01.json", false, mf)
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}
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// mirrorQueueManagerErrorLogs starts a goroutine to mirror the contents of the MQ queue manager error logs
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func mirrorQueueManagerErrorLogs(ctx context.Context, wg *sync.WaitGroup, name string, fromStart bool, mf mirrorFunc) (chan error, error) {
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// Always use the JSON log as the source
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qm, err := mqini.GetQueueManager(name)
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if err != nil {
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logDebug(err)
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return nil, err
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}
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f := filepath.Join(mqini.GetErrorLogDirectory(qm), "AMQERR01.json")
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return mirrorLog(ctx, wg, f, fromStart, mf)
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}
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func getDebug() bool {
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debug := os.Getenv("DEBUG")
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if debug == "true" || debug == "1" {
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return true
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}
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return false
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}
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func configureLogger() (mirrorFunc, error) {
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f := getLogFormat()
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d := getDebug()
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switch f {
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case "json":
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log = logger.NewLogger(os.Stdout, d, true)
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return log.LogDirect, nil
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case "simple":
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log = logger.NewLogger(os.Stdout, d, false)
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return func(msg string) {
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// Parse the JSON message, and print a simplified version
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var obj map[string]interface{}
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json.Unmarshal([]byte(msg), &obj)
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fmt.Printf(formatSimple(obj["ibm_datetime"].(string), obj["message"].(string)))
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}, nil
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default:
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log = logger.NewLogger(os.Stdout, d, false)
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return nil, fmt.Errorf("invalid value for LOG_FORMAT: %v", f)
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}
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}
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