435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
/*
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Copyright (c) 2015 VMware, Inc. 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 object
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import (
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"context"
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"fmt"
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"io"
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"math"
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)
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// DiagnosticLog wraps DiagnosticManager.BrowseLog
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type DiagnosticLog struct {
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m DiagnosticManager
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Key string
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Host *HostSystem
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Start int32
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}
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// Seek to log position starting at the last nlines of the log
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func (l *DiagnosticLog) Seek(ctx context.Context, nlines int32) error {
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h, err := l.m.BrowseLog(ctx, l.Host, l.Key, math.MaxInt32, 0)
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if err != nil {
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return err
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}
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l.Start = h.LineEnd - nlines
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return nil
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}
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// Copy log starting from l.Start to the given io.Writer
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// Returns on error or when end of log is reached.
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func (l *DiagnosticLog) Copy(ctx context.Context, w io.Writer) (int, error) {
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const max = 500 // VC max == 500, ESX max == 1000
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written := 0
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for {
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h, err := l.m.BrowseLog(ctx, l.Host, l.Key, l.Start, max)
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if err != nil {
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return 0, err
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}
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for _, line := range h.LineText {
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n, err := fmt.Fprintln(w, line)
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written += n
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if err != nil {
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return written, err
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}
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}
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l.Start += int32(len(h.LineText))
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if l.Start >= h.LineEnd {
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break
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}
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}
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return written, nil
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}
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