mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
c55a4ac779
The io/ioutil package has been deprecated in Go 1.16. This commit replaces the existing io/ioutil functions with their new definitions in io and os packages. Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
217 lines
6.3 KiB
Go
217 lines
6.3 KiB
Go
package local
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"encoding/binary"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/docker/docker/api/types/backend"
|
|
"github.com/docker/docker/api/types/plugins/logdriver"
|
|
"github.com/docker/docker/daemon/logger"
|
|
protoio "github.com/gogo/protobuf/io"
|
|
"gotest.tools/v3/assert"
|
|
is "gotest.tools/v3/assert/cmp"
|
|
)
|
|
|
|
func TestWriteLog(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
dir, err := os.MkdirTemp("", t.Name())
|
|
assert.NilError(t, err)
|
|
defer os.RemoveAll(dir)
|
|
|
|
logPath := filepath.Join(dir, "test.log")
|
|
|
|
l, err := New(logger.Info{LogPath: logPath})
|
|
assert.NilError(t, err)
|
|
defer l.Close()
|
|
|
|
m1 := logger.Message{Source: "stdout", Timestamp: time.Now().Add(-1 * 30 * time.Minute), Line: []byte("message 1")}
|
|
m2 := logger.Message{Source: "stdout", Timestamp: time.Now().Add(-1 * 20 * time.Minute), Line: []byte("message 2"), PLogMetaData: &backend.PartialLogMetaData{Last: true, ID: "0001", Ordinal: 1}}
|
|
m3 := logger.Message{Source: "stderr", Timestamp: time.Now().Add(-1 * 10 * time.Minute), Line: []byte("message 3")}
|
|
|
|
// copy the log message because the underying log writer resets the log message and returns it to a buffer pool
|
|
err = l.Log(copyLogMessage(&m1))
|
|
assert.NilError(t, err)
|
|
err = l.Log(copyLogMessage(&m2))
|
|
assert.NilError(t, err)
|
|
err = l.Log(copyLogMessage(&m3))
|
|
assert.NilError(t, err)
|
|
|
|
f, err := os.Open(logPath)
|
|
assert.NilError(t, err)
|
|
defer f.Close()
|
|
dec := protoio.NewUint32DelimitedReader(f, binary.BigEndian, 1e6)
|
|
|
|
var (
|
|
proto logdriver.LogEntry
|
|
testProto logdriver.LogEntry
|
|
partial logdriver.PartialLogEntryMetadata
|
|
)
|
|
|
|
lenBuf := make([]byte, encodeBinaryLen)
|
|
seekMsgLen := func() {
|
|
io.ReadFull(f, lenBuf)
|
|
}
|
|
|
|
err = dec.ReadMsg(&proto)
|
|
assert.NilError(t, err)
|
|
messageToProto(&m1, &testProto, &partial)
|
|
assert.Check(t, is.DeepEqual(testProto, proto), "expected:\n%+v\ngot:\n%+v", testProto, proto)
|
|
seekMsgLen()
|
|
|
|
err = dec.ReadMsg(&proto)
|
|
assert.NilError(t, err)
|
|
messageToProto(&m2, &testProto, &partial)
|
|
assert.Check(t, is.DeepEqual(testProto, proto))
|
|
seekMsgLen()
|
|
|
|
err = dec.ReadMsg(&proto)
|
|
assert.NilError(t, err)
|
|
messageToProto(&m3, &testProto, &partial)
|
|
assert.Check(t, is.DeepEqual(testProto, proto), "expected:\n%+v\ngot:\n%+v", testProto, proto)
|
|
}
|
|
|
|
func TestReadLog(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
dir, err := os.MkdirTemp("", t.Name())
|
|
assert.NilError(t, err)
|
|
defer os.RemoveAll(dir)
|
|
|
|
logPath := filepath.Join(dir, "test.log")
|
|
l, err := New(logger.Info{LogPath: logPath})
|
|
assert.NilError(t, err)
|
|
defer l.Close()
|
|
|
|
m1 := logger.Message{Source: "stdout", Timestamp: time.Now().Add(-1 * 30 * time.Minute), Line: []byte("a message")}
|
|
m2 := logger.Message{Source: "stdout", Timestamp: time.Now().Add(-1 * 20 * time.Minute), Line: []byte("another message"), PLogMetaData: &backend.PartialLogMetaData{Ordinal: 1, Last: true}}
|
|
longMessage := []byte("a really long message " + strings.Repeat("a", initialBufSize*2))
|
|
m3 := logger.Message{Source: "stderr", Timestamp: time.Now().Add(-1 * 10 * time.Minute), Line: longMessage}
|
|
m4 := logger.Message{Source: "stderr", Timestamp: time.Now().Add(-1 * 10 * time.Minute), Line: []byte("just one more message")}
|
|
|
|
// copy the log message because the underlying log writer resets the log message and returns it to a buffer pool
|
|
err = l.Log(copyLogMessage(&m1))
|
|
assert.NilError(t, err)
|
|
err = l.Log(copyLogMessage(&m2))
|
|
assert.NilError(t, err)
|
|
err = l.Log(copyLogMessage(&m3))
|
|
assert.NilError(t, err)
|
|
err = l.Log(copyLogMessage(&m4))
|
|
assert.NilError(t, err)
|
|
|
|
lr := l.(logger.LogReader)
|
|
|
|
testMessage := func(t *testing.T, lw *logger.LogWatcher, m *logger.Message) {
|
|
t.Helper()
|
|
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
defer cancel()
|
|
select {
|
|
case <-ctx.Done():
|
|
assert.Assert(t, ctx.Err())
|
|
case err := <-lw.Err:
|
|
assert.NilError(t, err)
|
|
case msg, open := <-lw.Msg:
|
|
if !open {
|
|
select {
|
|
case err := <-lw.Err:
|
|
assert.NilError(t, err)
|
|
default:
|
|
assert.Assert(t, m == nil)
|
|
return
|
|
}
|
|
}
|
|
assert.Assert(t, m != nil)
|
|
if m.PLogMetaData == nil {
|
|
// a `\n` is appended on read to make this work with the existing API's when the message is not a partial.
|
|
// make sure it's the last entry in the line, and then truncate it for the deep equal below.
|
|
assert.Check(t, msg.Line[len(msg.Line)-1] == '\n')
|
|
msg.Line = msg.Line[:len(msg.Line)-1]
|
|
}
|
|
assert.Check(t, is.DeepEqual(m, msg), fmt.Sprintf("\n%+v\n%+v", m, msg))
|
|
}
|
|
}
|
|
|
|
t.Run("tail exact", func(t *testing.T) {
|
|
lw := lr.ReadLogs(logger.ReadConfig{Tail: 4})
|
|
|
|
testMessage(t, lw, &m1)
|
|
testMessage(t, lw, &m2)
|
|
testMessage(t, lw, &m3)
|
|
testMessage(t, lw, &m4)
|
|
testMessage(t, lw, nil) // no more messages
|
|
})
|
|
|
|
t.Run("tail less than available", func(t *testing.T) {
|
|
lw := lr.ReadLogs(logger.ReadConfig{Tail: 2})
|
|
|
|
testMessage(t, lw, &m3)
|
|
testMessage(t, lw, &m4)
|
|
testMessage(t, lw, nil) // no more messages
|
|
})
|
|
|
|
t.Run("tail more than available", func(t *testing.T) {
|
|
lw := lr.ReadLogs(logger.ReadConfig{Tail: 100})
|
|
|
|
testMessage(t, lw, &m1)
|
|
testMessage(t, lw, &m2)
|
|
testMessage(t, lw, &m3)
|
|
testMessage(t, lw, &m4)
|
|
testMessage(t, lw, nil) // no more messages
|
|
})
|
|
}
|
|
|
|
func BenchmarkLogWrite(b *testing.B) {
|
|
f, err := os.CreateTemp("", b.Name())
|
|
assert.Assert(b, err)
|
|
defer os.Remove(f.Name())
|
|
f.Close()
|
|
|
|
local, err := New(logger.Info{LogPath: f.Name()})
|
|
assert.Assert(b, err)
|
|
defer local.Close()
|
|
|
|
t := time.Now().UTC()
|
|
for _, data := range [][]byte{
|
|
[]byte(""),
|
|
[]byte("a short string"),
|
|
bytes.Repeat([]byte("a long string"), 100),
|
|
bytes.Repeat([]byte("a really long string"), 10000),
|
|
} {
|
|
b.Run(fmt.Sprintf("%d", len(data)), func(b *testing.B) {
|
|
entry := &logdriver.LogEntry{Line: data, Source: "stdout", TimeNano: t.UnixNano()}
|
|
b.SetBytes(int64(entry.Size() + encodeBinaryLen + encodeBinaryLen))
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
msg := logger.NewMessage()
|
|
msg.Line = data
|
|
msg.Timestamp = t
|
|
msg.Source = "stdout"
|
|
if err := local.Log(msg); err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func copyLogMessage(src *logger.Message) *logger.Message {
|
|
dst := logger.NewMessage()
|
|
dst.Source = src.Source
|
|
dst.Timestamp = src.Timestamp
|
|
dst.Attrs = src.Attrs
|
|
dst.Err = src.Err
|
|
dst.Line = append(dst.Line, src.Line...)
|
|
if src.PLogMetaData != nil {
|
|
lmd := *src.PLogMetaData
|
|
dst.PLogMetaData = &lmd
|
|
}
|
|
return dst
|
|
}
|