77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
|
/*
|
||
|
|
Copyright (c) 2015 VMware, Inc. All Rights Reserved.
|
||
|
|
|
||
|
|
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 object
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"fmt"
|
||
|
|
"io"
|
||
|
|
"math"
|
||
|
|
)
|
||
|
|
|
||
|
|
// DiagnosticLog wraps DiagnosticManager.BrowseLog
|
||
|
|
type DiagnosticLog struct {
|
||
|
|
m DiagnosticManager
|
||
|
|
|
||
|
|
Key string
|
||
|
|
Host *HostSystem
|
||
|
|
|
||
|
|
Start int32
|
||
|
|
}
|
||
|
|
|
||
|
|
// Seek to log position starting at the last nlines of the log
|
||
|
|
func (l *DiagnosticLog) Seek(ctx context.Context, nlines int32) error {
|
||
|
|
h, err := l.m.BrowseLog(ctx, l.Host, l.Key, math.MaxInt32, 0)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
l.Start = h.LineEnd - nlines
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Copy log starting from l.Start to the given io.Writer
|
||
|
|
// Returns on error or when end of log is reached.
|
||
|
|
func (l *DiagnosticLog) Copy(ctx context.Context, w io.Writer) (int, error) {
|
||
|
|
const max = 500 // VC max == 500, ESX max == 1000
|
||
|
|
written := 0
|
||
|
|
|
||
|
|
for {
|
||
|
|
h, err := l.m.BrowseLog(ctx, l.Host, l.Key, l.Start, max)
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, line := range h.LineText {
|
||
|
|
n, err := fmt.Fprintln(w, line)
|
||
|
|
written += n
|
||
|
|
if err != nil {
|
||
|
|
return written, err
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
l.Start += int32(len(h.LineText))
|
||
|
|
|
||
|
|
if l.Start >= h.LineEnd {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return written, nil
|
||
|
|
}
|