114 lines
3.0 KiB
Go
114 lines
3.0 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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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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"bytes"
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"fmt"
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"log"
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"os"
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"regexp"
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"strconv"
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// initflag must be imported before any other minikube pkg.
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// Fix for https://github.com/kubernetes/minikube/issues/4866
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_ "k8s.io/minikube/pkg/initflag"
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// Register drivers
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_ "k8s.io/minikube/pkg/minikube/registry/drvs"
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mlog "github.com/docker/machine/libmachine/log"
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"github.com/golang/glog"
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"github.com/pkg/profile"
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"k8s.io/minikube/cmd/minikube/cmd"
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"k8s.io/minikube/pkg/minikube/constants"
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"k8s.io/minikube/pkg/minikube/machine"
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"k8s.io/minikube/pkg/minikube/out"
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_ "k8s.io/minikube/pkg/provision"
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)
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const minikubeEnableProfile = "MINIKUBE_ENABLE_PROFILING"
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var (
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// This regex is intentionally very specific, it's supposed to surface
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// unexpected errors from libmachine to the user.
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machineLogErrorRe = regexp.MustCompile(`VirtualizationException`)
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machineLogWarningRe = regexp.MustCompile(`(?i)warning`)
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)
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func main() {
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bridgeLogMessages()
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defer glog.Flush()
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if os.Getenv(minikubeEnableProfile) == "1" {
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defer profile.Start(profile.TraceProfile).Stop()
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}
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if os.Getenv(constants.IsMinikubeChildProcess) == "" {
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machine.StartDriver()
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}
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out.SetOutFile(os.Stdout)
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out.SetErrFile(os.Stderr)
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cmd.Execute()
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}
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// bridgeLogMessages bridges non-glog logs into glog
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func bridgeLogMessages() {
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log.SetFlags(log.Lshortfile)
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log.SetOutput(stdLogBridge{})
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mlog.SetErrWriter(machineLogBridge{})
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mlog.SetOutWriter(machineLogBridge{})
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mlog.SetDebug(true)
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}
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type stdLogBridge struct{}
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// Write parses the standard logging line and passes its components to glog
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func (lb stdLogBridge) Write(b []byte) (n int, err error) {
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// Split "d.go:23: message" into "d.go", "23", and "message".
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parts := bytes.SplitN(b, []byte{':'}, 3)
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if len(parts) != 3 || len(parts[0]) < 1 || len(parts[2]) < 1 {
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glog.Errorf("bad log format: %s", b)
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return
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}
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file := string(parts[0])
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text := string(parts[2][1:]) // skip leading space
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line, err := strconv.Atoi(string(parts[1]))
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if err != nil {
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text = fmt.Sprintf("bad line number: %s", b)
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line = 0
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}
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glog.Infof("stdlog: %s:%d %s", file, line, text)
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return len(b), nil
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}
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// libmachine log bridge
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type machineLogBridge struct{}
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// Write passes machine driver logs to glog
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func (lb machineLogBridge) Write(b []byte) (n int, err error) {
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if machineLogErrorRe.Match(b) {
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glog.Errorf("libmachine: %s", b)
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} else if machineLogWarningRe.Match(b) {
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glog.Warningf("libmachine: %s", b)
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} else {
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glog.Infof("libmachine: %s", b)
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}
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return len(b), nil
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}
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