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package notifications
import (
"reflect"
"sync"
"time"
events "github.com/docker/go-events"
"github.com/sirupsen/logrus"
"testing"
)
func TestEventQueue(t *testing.T) {
const nevents = 1000
var ts testSink
metrics := newSafeMetrics("")
eq := newEventQueue(
// delayed sync simulates destination slower than channel comms
&delayedSink{
Sink: &ts,
delay: time.Millisecond * 1,
}, metrics.eventQueueListener())
var wg sync.WaitGroup
var event events.Event
for i := 1; i <= nevents; i++ {
event = createTestEvent("push", "library/test", "blob")
wg.Add(1)
go func(event events.Event) {
if err := eq.Write(event); err != nil {
t.Errorf("error writing event block: %v", err)
}
wg.Done()
}(event)
}
wg.Wait()
if t.Failed() {
t.FailNow()
}
checkClose(t, eq)
ts.mu.Lock()
defer ts.mu.Unlock()
metrics.Lock()
defer metrics.Unlock()
if ts.count != nevents {
t.Fatalf("events did not make it to the sink: %d != %d", ts.count, 1000)
}
if !ts.closed {
t.Fatalf("sink should have been closed")
}
if metrics.Events != nevents {
t.Fatalf("unexpected ingress count: %d != %d", metrics.Events, nevents)
}
if metrics.Pending != 0 {
t.Fatalf("unexpected egress count: %d != %d", metrics.Pending, 0)
}
}
func TestIgnoredSink(t *testing.T) {
blob := createTestEvent("push", "library/test", "blob")
manifest := createTestEvent("pull", "library/test", "manifest")
type testcase struct {
ignoreMediaTypes []string
ignoreActions []string
expected events.Event
}
cases := []testcase{
{nil, nil, blob},
{[]string{"other"}, []string{"other"}, blob},
{[]string{"blob", "manifest"}, []string{"other"}, nil},
{[]string{"other"}, []string{"pull"}, blob},
{[]string{"other"}, []string{"pull", "push"}, nil},
}
for _, c := range cases {
ts := &testSink{}
s := newIgnoredSink(ts, c.ignoreMediaTypes, c.ignoreActions)
if err := s.Write(blob); err != nil {
t.Fatalf("error writing event: %v", err)
}
ts.mu.Lock()
if !reflect.DeepEqual(ts.event, c.expected) {
t.Fatalf("unexpected event: %#v != %#v", ts.event, c.expected)
}
ts.mu.Unlock()
}
cases = []testcase{
{nil, nil, manifest},
{[]string{"other"}, []string{"other"}, manifest},
{[]string{"blob"}, []string{"other"}, manifest},
{[]string{"blob", "manifest"}, []string{"other"}, nil},
{[]string{"other"}, []string{"push"}, manifest},
{[]string{"other"}, []string{"pull", "push"}, nil},
}
for _, c := range cases {
ts := &testSink{}
s := newIgnoredSink(ts, c.ignoreMediaTypes, c.ignoreActions)
if err := s.Write(manifest); err != nil {
t.Fatalf("error writing event: %v", err)
}
ts.mu.Lock()
if !reflect.DeepEqual(ts.event, c.expected) {
t.Fatalf("unexpected event: %#v != %#v", ts.event, c.expected)
}
ts.mu.Unlock()
}
}
type testSink struct {
event events.Event
count int
mu sync.Mutex
closed bool
}
func (ts *testSink) Write(event events.Event) error {
ts.mu.Lock()
defer ts.mu.Unlock()
ts.event = event
ts.count++
return nil
}
func (ts *testSink) Close() error {
ts.mu.Lock()
defer ts.mu.Unlock()
ts.closed = true
logrus.Infof("closing testSink")
return nil
}
type delayedSink struct {
events.Sink
delay time.Duration
}
func (ds *delayedSink) Write(event events.Event) error {
time.Sleep(ds.delay)
return ds.Sink.Write(event)
}
func checkClose(t *testing.T, sink events.Sink) {
if err := sink.Close(); err != nil {
t.Fatalf("unexpected error closing: %v", err)
}
// second close should not crash but should return an error.
if err := sink.Close(); err == nil {
t.Fatalf("no error on double close")
}
// Write after closed should be an error
if err := sink.Write(Event{}); err == nil {
t.Fatalf("write after closed did not have an error")
} else if err != ErrSinkClosed {
t.Fatalf("error should be ErrSinkClosed")
}
}