mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
daemon/logger: add test suite for LogReaders
Add an extensive test suite for validating the behavior of any LogReader. Test the current LogFile-based implementations against it. Signed-off-by: Cory Snider <csnider@mirantis.com>
This commit is contained in:
Cory Snider
parent
961d32868c
commit
9aa9d6fafc
3 changed files with 480 additions and 87 deletions
|
|
@ -9,6 +9,7 @@ import (
|
|||
"time"
|
||||
|
||||
"github.com/docker/docker/daemon/logger"
|
||||
"github.com/docker/docker/daemon/logger/loggertest"
|
||||
"gotest.tools/v3/assert"
|
||||
)
|
||||
|
||||
|
|
@ -139,6 +140,20 @@ func TestUnexpectedEOF(t *testing.T) {
|
|||
assert.Error(t, err, io.EOF.Error())
|
||||
}
|
||||
|
||||
func TestReadLogs(t *testing.T) {
|
||||
loggertest.Reader{
|
||||
Factory: func(t *testing.T, info logger.Info) func(*testing.T) logger.Logger {
|
||||
dir := t.TempDir()
|
||||
info.LogPath = filepath.Join(dir, info.ContainerID+".log")
|
||||
return func(t *testing.T) logger.Logger {
|
||||
l, err := New(info)
|
||||
assert.NilError(t, err)
|
||||
return l
|
||||
}
|
||||
},
|
||||
}.Do(t)
|
||||
}
|
||||
|
||||
type readerWithErr struct {
|
||||
err error
|
||||
after int
|
||||
|
|
|
|||
|
|
@ -2,19 +2,18 @@ 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"
|
||||
"github.com/docker/docker/daemon/logger/loggertest"
|
||||
protoio "github.com/gogo/protobuf/io"
|
||||
"gotest.tools/v3/assert"
|
||||
is "gotest.tools/v3/assert/cmp"
|
||||
|
|
@ -80,92 +79,17 @@ func TestWriteLog(t *testing.T) {
|
|||
}
|
||||
|
||||
func TestReadLog(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
dir, err := os.MkdirTemp("", t.Name())
|
||||
loggertest.Reader{
|
||||
Factory: func(t *testing.T, info logger.Info) func(*testing.T) logger.Logger {
|
||||
dir := t.TempDir()
|
||||
info.LogPath = filepath.Join(dir, info.ContainerID+".log")
|
||||
return func(t *testing.T) logger.Logger {
|
||||
l, err := New(info)
|
||||
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
|
||||
return l
|
||||
}
|
||||
}
|
||||
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
|
||||
})
|
||||
},
|
||||
}.Do(t)
|
||||
}
|
||||
|
||||
func BenchmarkLogWrite(b *testing.B) {
|
||||
|
|
|
|||
454
daemon/logger/loggertest/logreader.go
Normal file
454
daemon/logger/loggertest/logreader.go
Normal file
|
|
@ -0,0 +1,454 @@
|
|||
package loggertest // import "github.com/docker/docker/daemon/logger/loggertest"
|
||||
|
||||
import (
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/google/go-cmp/cmp"
|
||||
"github.com/google/go-cmp/cmp/cmpopts"
|
||||
"gotest.tools/v3/assert"
|
||||
|
||||
"github.com/docker/docker/api/types/backend"
|
||||
"github.com/docker/docker/daemon/logger"
|
||||
)
|
||||
|
||||
// Reader tests that a logger.LogReader implementation behaves as it should.
|
||||
type Reader struct {
|
||||
// Factory returns a function which constructs loggers for the container
|
||||
// specified in info. Each call to the returned function must yield a
|
||||
// distinct logger instance which can read back logs written by earlier
|
||||
// instances.
|
||||
Factory func(*testing.T, logger.Info) func(*testing.T) logger.Logger
|
||||
}
|
||||
|
||||
var compareLog cmp.Options = []cmp.Option{
|
||||
// The json-log driver does not round-trip PLogMetaData and API users do
|
||||
// not expect it.
|
||||
cmpopts.IgnoreFields(logger.Message{}, "PLogMetaData"),
|
||||
cmp.Transformer("string", func(b []byte) string { return string(b) }),
|
||||
}
|
||||
|
||||
// Do tests the behavior of the LogReader implementation.
|
||||
func (tr Reader) Do(t *testing.T) {
|
||||
t.Run("Live/Tail", func(t *testing.T) { tr.testTail(t, true) })
|
||||
t.Run("Live/TailEmpty", func(t *testing.T) { tr.testTailEmptyLogs(t, true) })
|
||||
t.Run("Live/Follow", tr.testFollow)
|
||||
t.Run("Stopped/Tail", func(t *testing.T) { tr.testTail(t, false) })
|
||||
t.Run("Stopped/TailEmpty", func(t *testing.T) { tr.testTailEmptyLogs(t, false) })
|
||||
}
|
||||
|
||||
func makeTestMessages() []*logger.Message {
|
||||
return []*logger.Message{
|
||||
{Source: "stdout", Timestamp: time.Now().Add(-1 * 30 * time.Minute), Line: []byte("a message")},
|
||||
{Source: "stdout", Timestamp: time.Now().Add(-1 * 20 * time.Minute), Line: []byte("another message"), PLogMetaData: &backend.PartialLogMetaData{ID: "aaaaaaaa", Ordinal: 1, Last: true}},
|
||||
{Source: "stderr", Timestamp: time.Now().Add(-1 * 15 * time.Minute), Line: []byte("to be..."), PLogMetaData: &backend.PartialLogMetaData{ID: "bbbbbbbb", Ordinal: 1}},
|
||||
{Source: "stderr", Timestamp: time.Now().Add(-1 * 15 * time.Minute), Line: []byte("continued"), PLogMetaData: &backend.PartialLogMetaData{ID: "bbbbbbbb", Ordinal: 2, Last: true}},
|
||||
{Source: "stderr", Timestamp: time.Now().Add(-1 * 10 * time.Minute), Line: []byte("a really long message " + strings.Repeat("a", 4096))},
|
||||
{Source: "stderr", Timestamp: time.Now().Add(-1 * 10 * time.Minute), Line: []byte("just one more message")},
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func (tr Reader) testTail(t *testing.T, live bool) {
|
||||
t.Parallel()
|
||||
factory := tr.Factory(t, logger.Info{
|
||||
ContainerID: "tailtest0000",
|
||||
ContainerName: "logtail",
|
||||
})
|
||||
l := factory(t)
|
||||
if live {
|
||||
defer func() { assert.NilError(t, l.Close()) }()
|
||||
}
|
||||
|
||||
mm := makeTestMessages()
|
||||
expected := logMessages(t, l, mm)
|
||||
|
||||
if !live {
|
||||
// Simulate reading from a stopped container.
|
||||
assert.NilError(t, l.Close())
|
||||
l = factory(t)
|
||||
defer func() { assert.NilError(t, l.Close()) }()
|
||||
}
|
||||
lr := l.(logger.LogReader)
|
||||
|
||||
t.Run("Exact", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: len(mm)})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("LessThanAvailable", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: 2})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected[len(mm)-2:], compareLog)
|
||||
})
|
||||
|
||||
t.Run("MoreThanAvailable", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: 100})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("All", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: -1})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("Since", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: -1, Since: mm[1].Timestamp.Truncate(time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected[1:], compareLog)
|
||||
})
|
||||
|
||||
t.Run("MoreThanSince", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: len(mm), Since: mm[1].Timestamp.Truncate(time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected[1:], compareLog)
|
||||
})
|
||||
|
||||
t.Run("LessThanSince", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: len(mm) - 2, Since: mm[1].Timestamp.Truncate(time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected[2:], compareLog)
|
||||
})
|
||||
|
||||
t.Run("Until", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: -1, Until: mm[2].Timestamp.Add(-time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected[:2], compareLog)
|
||||
})
|
||||
|
||||
t.Run("SinceAndUntil", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := lr.ReadLogs(logger.ReadConfig{Tail: -1, Since: mm[1].Timestamp.Truncate(time.Millisecond), Until: mm[1].Timestamp.Add(time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), expected[1:2], compareLog)
|
||||
})
|
||||
}
|
||||
|
||||
func (tr Reader) testTailEmptyLogs(t *testing.T, live bool) {
|
||||
t.Parallel()
|
||||
factory := tr.Factory(t, logger.Info{
|
||||
ContainerID: "tailemptytest",
|
||||
ContainerName: "logtail",
|
||||
})
|
||||
l := factory(t)
|
||||
if !live {
|
||||
assert.NilError(t, l.Close())
|
||||
l = factory(t)
|
||||
}
|
||||
defer func() { assert.NilError(t, l.Close()) }()
|
||||
|
||||
for _, tt := range []struct {
|
||||
name string
|
||||
cfg logger.ReadConfig
|
||||
}{
|
||||
{name: "Zero", cfg: logger.ReadConfig{}},
|
||||
{name: "All", cfg: logger.ReadConfig{Tail: -1}},
|
||||
{name: "Tail", cfg: logger.ReadConfig{Tail: 42}},
|
||||
{name: "Since", cfg: logger.ReadConfig{Since: time.Unix(1, 0)}},
|
||||
{name: "Until", cfg: logger.ReadConfig{Until: time.Date(2100, time.January, 1, 1, 1, 1, 0, time.UTC)}},
|
||||
{name: "SinceAndUntil", cfg: logger.ReadConfig{Since: time.Unix(1, 0), Until: time.Date(2100, time.January, 1, 1, 1, 1, 0, time.UTC)}},
|
||||
} {
|
||||
tt := tt
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
t.Parallel()
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{})
|
||||
defer lw.ConsumerGone()
|
||||
assert.DeepEqual(t, readAll(t, lw), ([]*logger.Message)(nil), cmpopts.EquateEmpty())
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func (tr Reader) testFollow(t *testing.T) {
|
||||
t.Parallel()
|
||||
// Reader sends all logs and closes after logger is closed
|
||||
// - Starting from empty log (like run)
|
||||
t.Run("FromEmptyLog", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followstart0",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: -1, Follow: true})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
mm := makeTestMessages()
|
||||
expected := logMessages(t, l, mm)
|
||||
assert.NilError(t, l.Close())
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("AttachMidStream", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followmiddle",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
|
||||
mm := makeTestMessages()
|
||||
expected := logMessages(t, l, mm[0:1])
|
||||
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: -1, Follow: true})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected = append(expected, logMessages(t, l, mm[1:])...)
|
||||
assert.NilError(t, l.Close())
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("Since", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followsince0",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
|
||||
mm := makeTestMessages()
|
||||
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: -1, Follow: true, Since: mm[2].Timestamp.Truncate(time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected := logMessages(t, l, mm)[2:]
|
||||
assert.NilError(t, l.Close())
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("Until", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followuntil0",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
|
||||
mm := makeTestMessages()
|
||||
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: -1, Follow: true, Until: mm[2].Timestamp.Add(-time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected := logMessages(t, l, mm)[:2]
|
||||
defer assert.NilError(t, l.Close()) // Reading should end before the logger is closed.
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("SinceAndUntil", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followbounded",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
|
||||
mm := makeTestMessages()
|
||||
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: -1, Follow: true, Since: mm[1].Timestamp.Add(-time.Millisecond), Until: mm[2].Timestamp.Add(-time.Millisecond)})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected := logMessages(t, l, mm)[1:2]
|
||||
defer assert.NilError(t, l.Close()) // Reading should end before the logger is closed.
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("Tail=0", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followtail00",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
|
||||
mm := makeTestMessages()
|
||||
logMessages(t, l, mm[0:2])
|
||||
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: 0, Follow: true})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected := logMessages(t, l, mm[2:])
|
||||
assert.NilError(t, l.Close())
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("Tail>0", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
l := tr.Factory(t, logger.Info{
|
||||
ContainerID: "followtail00",
|
||||
ContainerName: "logloglog",
|
||||
})(t)
|
||||
|
||||
mm := makeTestMessages()
|
||||
expected := logMessages(t, l, mm[0:2])[1:]
|
||||
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: 1, Follow: true})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected = append(expected, logMessages(t, l, mm[2:])...)
|
||||
assert.NilError(t, l.Close())
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
|
||||
t.Run("MultipleStarts", func(t *testing.T) {
|
||||
t.Parallel()
|
||||
factory := tr.Factory(t, logger.Info{
|
||||
ContainerID: "startrestart",
|
||||
ContainerName: "startmeup",
|
||||
})
|
||||
|
||||
mm := makeTestMessages()
|
||||
l := factory(t)
|
||||
expected := logMessages(t, l, mm[:3])
|
||||
assert.NilError(t, l.Close())
|
||||
|
||||
l = factory(t)
|
||||
lw := l.(logger.LogReader).ReadLogs(logger.ReadConfig{Tail: -1, Follow: true})
|
||||
defer lw.ConsumerGone()
|
||||
|
||||
doneReading := make(chan struct{})
|
||||
var logs []*logger.Message
|
||||
go func() {
|
||||
defer close(doneReading)
|
||||
logs = readAll(t, lw)
|
||||
}()
|
||||
|
||||
expected = append(expected, logMessages(t, l, mm[3:])...)
|
||||
assert.NilError(t, l.Close())
|
||||
<-doneReading
|
||||
assert.DeepEqual(t, logs, expected, compareLog)
|
||||
})
|
||||
}
|
||||
|
||||
// logMessages logs messages to l and returns a slice of messages as would be
|
||||
// expected to be read back. The message values are not modified and the
|
||||
// returned slice of messages are deep-copied.
|
||||
func logMessages(t *testing.T, l logger.Logger, messages []*logger.Message) []*logger.Message {
|
||||
t.Helper()
|
||||
var expected []*logger.Message
|
||||
for _, m := range messages {
|
||||
// Copy the log message because the underlying log writer resets
|
||||
// the log message and returns it to a buffer pool.
|
||||
assert.NilError(t, l.Log(copyLogMessage(m)))
|
||||
|
||||
// Copy the log message again so as not to mutate the input.
|
||||
expect := copyLogMessage(m)
|
||||
// Existing API consumers expect a newline to be appended to
|
||||
// messages other than nonterminal partials as that matches the
|
||||
// existing behavior of the json-file log driver.
|
||||
if m.PLogMetaData == nil || m.PLogMetaData.Last {
|
||||
expect.Line = append(expect.Line, '\n')
|
||||
}
|
||||
expected = append(expected, expect)
|
||||
}
|
||||
return expected
|
||||
}
|
||||
|
||||
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
|
||||
}
|
||||
func readMessage(t *testing.T, lw *logger.LogWatcher) *logger.Message {
|
||||
t.Helper()
|
||||
timeout := time.NewTimer(5 * time.Second)
|
||||
defer timeout.Stop()
|
||||
select {
|
||||
case <-timeout.C:
|
||||
t.Error("timed out waiting for message")
|
||||
return nil
|
||||
case err, open := <-lw.Err:
|
||||
t.Errorf("unexpected receive on lw.Err: err=%v, open=%v", err, open)
|
||||
return nil
|
||||
case msg, open := <-lw.Msg:
|
||||
if !open {
|
||||
select {
|
||||
case err, open := <-lw.Err:
|
||||
t.Errorf("unexpected receive on lw.Err with closed lw.Msg: err=%v, open=%v", err, open)
|
||||
return nil
|
||||
default:
|
||||
}
|
||||
}
|
||||
return msg
|
||||
}
|
||||
}
|
||||
|
||||
func readAll(t *testing.T, lw *logger.LogWatcher) []*logger.Message {
|
||||
t.Helper()
|
||||
var msgs []*logger.Message
|
||||
for {
|
||||
m := readMessage(t, lw)
|
||||
if m == nil {
|
||||
return msgs
|
||||
}
|
||||
msgs = append(msgs, m)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue