2018-02-05 21:05:59 +00:00
|
|
|
package logger // import "github.com/docker/docker/daemon/logger"
|
2016-11-14 18:53:53 +00:00
|
|
|
|
|
|
|
import (
|
|
|
|
"encoding/binary"
|
|
|
|
"io"
|
2018-04-02 20:33:36 +00:00
|
|
|
"sync"
|
2016-11-14 18:53:53 +00:00
|
|
|
"testing"
|
|
|
|
"time"
|
|
|
|
|
|
|
|
"github.com/docker/docker/api/types/plugins/logdriver"
|
|
|
|
protoio "github.com/gogo/protobuf/io"
|
2020-02-07 13:39:24 +00:00
|
|
|
"gotest.tools/v3/assert"
|
|
|
|
is "gotest.tools/v3/assert/cmp"
|
2016-11-14 18:53:53 +00:00
|
|
|
)
|
|
|
|
|
|
|
|
// mockLoggingPlugin implements the loggingPlugin interface for testing purposes
|
|
|
|
// it only supports a single log stream
|
|
|
|
type mockLoggingPlugin struct {
|
2018-04-02 20:33:36 +00:00
|
|
|
io.WriteCloser
|
|
|
|
inStream io.Reader
|
|
|
|
logs []*logdriver.LogEntry
|
|
|
|
c *sync.Cond
|
|
|
|
err error
|
|
|
|
}
|
|
|
|
|
|
|
|
func newMockLoggingPlugin() *mockLoggingPlugin {
|
|
|
|
r, w := io.Pipe()
|
|
|
|
return &mockLoggingPlugin{
|
|
|
|
WriteCloser: w,
|
|
|
|
inStream: r,
|
|
|
|
logs: []*logdriver.LogEntry{},
|
|
|
|
c: sync.NewCond(new(sync.Mutex)),
|
|
|
|
}
|
2016-11-14 18:53:53 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
func (l *mockLoggingPlugin) StartLogging(file string, info Info) error {
|
|
|
|
go func() {
|
2018-04-02 20:33:36 +00:00
|
|
|
dec := protoio.NewUint32DelimitedReader(l.inStream, binary.BigEndian, 1e6)
|
|
|
|
for {
|
|
|
|
var msg logdriver.LogEntry
|
|
|
|
if err := dec.ReadMsg(&msg); err != nil {
|
|
|
|
l.c.L.Lock()
|
|
|
|
if l.err == nil {
|
|
|
|
l.err = err
|
|
|
|
}
|
|
|
|
l.c.L.Unlock()
|
|
|
|
|
|
|
|
l.c.Broadcast()
|
|
|
|
return
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
l.c.L.Lock()
|
|
|
|
l.logs = append(l.logs, &msg)
|
|
|
|
l.c.L.Unlock()
|
|
|
|
l.c.Broadcast()
|
|
|
|
}
|
|
|
|
|
2016-11-14 18:53:53 +00:00
|
|
|
}()
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (l *mockLoggingPlugin) StopLogging(file string) error {
|
2018-04-02 20:33:36 +00:00
|
|
|
l.c.L.Lock()
|
|
|
|
if l.err == nil {
|
|
|
|
l.err = io.EOF
|
|
|
|
}
|
|
|
|
l.c.L.Unlock()
|
|
|
|
l.c.Broadcast()
|
2016-11-14 18:53:53 +00:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (l *mockLoggingPlugin) Capabilities() (cap Capability, err error) {
|
|
|
|
return Capability{ReadLogs: true}, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (l *mockLoggingPlugin) ReadLogs(info Info, config ReadConfig) (io.ReadCloser, error) {
|
|
|
|
r, w := io.Pipe()
|
2018-04-02 20:33:36 +00:00
|
|
|
|
2016-11-14 18:53:53 +00:00
|
|
|
go func() {
|
2018-04-02 20:33:36 +00:00
|
|
|
var idx int
|
2016-11-14 18:53:53 +00:00
|
|
|
enc := logdriver.NewLogEntryEncoder(w)
|
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
l.c.L.Lock()
|
|
|
|
defer l.c.L.Unlock()
|
2016-11-14 18:53:53 +00:00
|
|
|
for {
|
2018-04-02 20:33:36 +00:00
|
|
|
if l.err != nil {
|
2016-11-14 18:53:53 +00:00
|
|
|
w.Close()
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
if idx >= len(l.logs) {
|
|
|
|
if !config.Follow {
|
|
|
|
w.Close()
|
|
|
|
return
|
2016-11-14 18:53:53 +00:00
|
|
|
}
|
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
l.c.Wait()
|
2016-11-14 18:53:53 +00:00
|
|
|
continue
|
|
|
|
}
|
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
if err := enc.Encode(l.logs[idx]); err != nil {
|
2016-11-14 18:53:53 +00:00
|
|
|
w.CloseWithError(err)
|
|
|
|
return
|
|
|
|
}
|
2018-04-02 20:33:36 +00:00
|
|
|
idx++
|
2016-11-14 18:53:53 +00:00
|
|
|
}
|
|
|
|
}()
|
|
|
|
|
|
|
|
return r, nil
|
|
|
|
}
|
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
func (l *mockLoggingPlugin) waitLen(i int) {
|
|
|
|
l.c.L.Lock()
|
|
|
|
defer l.c.L.Unlock()
|
|
|
|
for len(l.logs) < i {
|
|
|
|
l.c.Wait()
|
|
|
|
}
|
|
|
|
}
|
2017-06-19 01:47:45 +00:00
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
func (l *mockLoggingPlugin) check(t *testing.T) {
|
|
|
|
if l.err != nil && l.err != io.EOF {
|
|
|
|
t.Fatal(l.err)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
func newMockPluginAdapter(plugin *mockLoggingPlugin) Logger {
|
|
|
|
enc := logdriver.NewLogEntryEncoder(plugin)
|
2016-11-14 18:53:53 +00:00
|
|
|
a := &pluginAdapterWithRead{
|
|
|
|
&pluginAdapter{
|
2018-04-02 20:33:36 +00:00
|
|
|
plugin: plugin,
|
|
|
|
stream: plugin,
|
2016-11-14 18:53:53 +00:00
|
|
|
enc: enc,
|
|
|
|
},
|
|
|
|
}
|
|
|
|
a.plugin.StartLogging("", Info{})
|
|
|
|
return a
|
|
|
|
}
|
|
|
|
|
|
|
|
func TestAdapterReadLogs(t *testing.T) {
|
2018-04-02 20:33:36 +00:00
|
|
|
plugin := newMockLoggingPlugin()
|
|
|
|
l := newMockPluginAdapter(plugin)
|
2016-11-14 18:53:53 +00:00
|
|
|
|
|
|
|
testMsg := []Message{
|
|
|
|
{Line: []byte("Are you the keymaker?"), Timestamp: time.Now()},
|
|
|
|
{Line: []byte("Follow the white rabbit"), Timestamp: time.Now()},
|
|
|
|
}
|
|
|
|
for _, msg := range testMsg {
|
|
|
|
m := msg.copy()
|
2018-03-13 19:28:34 +00:00
|
|
|
assert.Check(t, l.Log(m))
|
2016-11-14 18:53:53 +00:00
|
|
|
}
|
|
|
|
|
2018-04-02 20:33:36 +00:00
|
|
|
// Wait until messages are read into plugin
|
|
|
|
plugin.waitLen(len(testMsg))
|
|
|
|
|
2016-11-14 18:53:53 +00:00
|
|
|
lr, ok := l.(LogReader)
|
2017-12-22 21:30:49 +00:00
|
|
|
assert.Check(t, ok, "Logger does not implement LogReader")
|
2016-11-14 18:53:53 +00:00
|
|
|
|
|
|
|
lw := lr.ReadLogs(ReadConfig{})
|
|
|
|
|
|
|
|
for _, x := range testMsg {
|
|
|
|
select {
|
|
|
|
case msg := <-lw.Msg:
|
|
|
|
testMessageEqual(t, &x, msg)
|
2017-06-19 01:47:45 +00:00
|
|
|
case <-time.After(10 * time.Second):
|
2016-11-14 18:53:53 +00:00
|
|
|
t.Fatal("timeout reading logs")
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
select {
|
|
|
|
case _, ok := <-lw.Msg:
|
2018-03-13 19:28:34 +00:00
|
|
|
assert.Check(t, !ok, "expected message channel to be closed")
|
2016-11-14 18:53:53 +00:00
|
|
|
case <-time.After(10 * time.Second):
|
|
|
|
t.Fatal("timeout waiting for message channel to close")
|
|
|
|
|
|
|
|
}
|
2022-03-02 23:38:16 +00:00
|
|
|
lw.ConsumerGone()
|
2016-11-14 18:53:53 +00:00
|
|
|
|
|
|
|
lw = lr.ReadLogs(ReadConfig{Follow: true})
|
|
|
|
for _, x := range testMsg {
|
|
|
|
select {
|
|
|
|
case msg := <-lw.Msg:
|
|
|
|
testMessageEqual(t, &x, msg)
|
|
|
|
case <-time.After(10 * time.Second):
|
|
|
|
t.Fatal("timeout reading logs")
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
x := Message{Line: []byte("Too infinity and beyond!"), Timestamp: time.Now()}
|
2018-03-13 19:28:34 +00:00
|
|
|
assert.Check(t, l.Log(x.copy()))
|
2016-11-14 18:53:53 +00:00
|
|
|
|
|
|
|
select {
|
|
|
|
case msg, ok := <-lw.Msg:
|
2017-12-22 21:30:49 +00:00
|
|
|
assert.Check(t, ok, "message channel unexpectedly closed")
|
2016-11-14 18:53:53 +00:00
|
|
|
testMessageEqual(t, &x, msg)
|
|
|
|
case <-time.After(10 * time.Second):
|
|
|
|
t.Fatal("timeout reading logs")
|
|
|
|
}
|
|
|
|
|
|
|
|
l.Close()
|
|
|
|
select {
|
|
|
|
case msg, ok := <-lw.Msg:
|
2018-03-13 19:28:34 +00:00
|
|
|
assert.Check(t, !ok, "expected message channel to be closed")
|
|
|
|
assert.Check(t, is.Nil(msg))
|
2016-11-14 18:53:53 +00:00
|
|
|
case <-time.After(10 * time.Second):
|
|
|
|
t.Fatal("timeout waiting for logger to close")
|
|
|
|
}
|
2018-04-02 20:33:36 +00:00
|
|
|
|
|
|
|
plugin.check(t)
|
2016-11-14 18:53:53 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
func testMessageEqual(t *testing.T, a, b *Message) {
|
2018-03-13 19:28:34 +00:00
|
|
|
assert.Check(t, is.DeepEqual(a.Line, b.Line))
|
|
|
|
assert.Check(t, is.DeepEqual(a.Timestamp.UnixNano(), b.Timestamp.UnixNano()))
|
|
|
|
assert.Check(t, is.Equal(a.Source, b.Source))
|
2016-11-14 18:53:53 +00:00
|
|
|
}
|