71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
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 glusterfs
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/golang/glog"
|
|
)
|
|
|
|
// readGlusterLog will take the last 2 lines of the log file
|
|
// on failure of gluster SetUp and return those so kubelet can
|
|
// properly expose them
|
|
// return nil on any failure
|
|
func readGlusterLog(path string, podName string) error {
|
|
|
|
var line1 string
|
|
var line2 string
|
|
linecount := 0
|
|
|
|
glog.Infof("glusterfs: failure, now attempting to read the gluster log for pod %s", podName)
|
|
|
|
// Check and make sure path exists
|
|
if len(path) == 0 {
|
|
return fmt.Errorf("glusterfs: log file does not exist for pod: %s", podName)
|
|
}
|
|
|
|
// open the log file
|
|
file, err := os.Open(path)
|
|
if err != nil {
|
|
return fmt.Errorf("glusterfs: could not open log file for pod: %s", podName)
|
|
}
|
|
defer file.Close()
|
|
|
|
// read in and scan the file using scanner
|
|
// from stdlib
|
|
fscan := bufio.NewScanner(file)
|
|
|
|
// rather than guessing on bytes or using Seek
|
|
// going to scan entire file and take the last two lines
|
|
// generally the file should be small since it is pod specific
|
|
for fscan.Scan() {
|
|
if linecount > 0 {
|
|
line1 = line2
|
|
}
|
|
line2 = "\n" + fscan.Text()
|
|
|
|
linecount++
|
|
}
|
|
|
|
if linecount > 0 {
|
|
return fmt.Errorf("%v", line1+line2+"\n")
|
|
}
|
|
return nil
|
|
}
|