90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
// Copyright 2018 Prometheus Team
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package cluster
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"io"
|
|
"os"
|
|
"testing"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/hashicorp/memberlist"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
func TestNormalMessagesGossiped(t *testing.T) {
|
|
var sent bool
|
|
c := newChannel(
|
|
func(_ []byte) { sent = true },
|
|
func() []*memberlist.Node { return nil },
|
|
func(_ *memberlist.Node, _ []byte) error { return nil },
|
|
)
|
|
|
|
c.Broadcast([]byte{})
|
|
|
|
if sent != true {
|
|
t.Fatalf("small message not sent")
|
|
}
|
|
}
|
|
|
|
func TestOversizedMessagesGossiped(t *testing.T) {
|
|
var sent bool
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
c := newChannel(
|
|
func(_ []byte) {},
|
|
func() []*memberlist.Node { return []*memberlist.Node{&memberlist.Node{}} },
|
|
func(_ *memberlist.Node, _ []byte) error { sent = true; cancel(); return nil },
|
|
)
|
|
|
|
f, err := os.Open("/dev/zero")
|
|
if err != nil {
|
|
t.Fatalf("failed to open /dev/zero: %v", err)
|
|
}
|
|
defer f.Close()
|
|
|
|
buf := new(bytes.Buffer)
|
|
toCopy := int64(800)
|
|
if n, err := io.CopyN(buf, f, toCopy); err != nil {
|
|
t.Fatalf("failed to copy bytes: %v", err)
|
|
} else if n != toCopy {
|
|
t.Fatalf("wanted to copy %d bytes, only copied %d", toCopy, n)
|
|
}
|
|
|
|
c.Broadcast(buf.Bytes())
|
|
|
|
<-ctx.Done()
|
|
|
|
if sent != true {
|
|
t.Fatalf("oversized message not sent")
|
|
}
|
|
}
|
|
|
|
func newChannel(
|
|
send func([]byte),
|
|
peers func() []*memberlist.Node,
|
|
sendOversize func(*memberlist.Node, []byte) error,
|
|
) *Channel {
|
|
return NewChannel(
|
|
"test",
|
|
send,
|
|
peers,
|
|
sendOversize,
|
|
log.NewNopLogger(),
|
|
make(chan struct{}),
|
|
prometheus.NewRegistry(),
|
|
)
|
|
}
|