45 lines
1015 B
Go
45 lines
1015 B
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package logheap logs a heap pprof profile.
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package logheap
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import (
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"bytes"
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"context"
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"log"
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"net/http"
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"runtime"
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"runtime/pprof"
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"time"
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)
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// LogHeap uploads a JSON logtail record with the base64 heap pprof by means
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// of an HTTP POST request to the endpoint referred to in postURL.
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func LogHeap(postURL string) {
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if postURL == "" {
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return
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}
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runtime.GC()
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buf := new(bytes.Buffer)
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if err := pprof.WriteHeapProfile(buf); err != nil {
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log.Printf("LogHeap: %v", err)
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return
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}
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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req, err := http.NewRequestWithContext(ctx, "POST", postURL, buf)
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if err != nil {
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log.Printf("LogHeap: %v", err)
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return
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}
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res, err := http.DefaultClient.Do(req)
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if err != nil {
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log.Printf("LogHeap: %v", err)
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return
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}
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defer res.Body.Close()
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}
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