mirror of
https://github.com/gogrlx/nats-server.git
synced 2026-04-02 03:38:42 -07:00
515ca5e70f
This is similar to what we do with Gateways. Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
76 lines
1.9 KiB
Go
76 lines
1.9 KiB
Go
// Copyright 2019 The NATS Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package server
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import (
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"fmt"
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"net/url"
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"strings"
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"testing"
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"time"
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)
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type captureLeafNodeRandomIPLogger struct {
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DummyLogger
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ch chan struct{}
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ips [3]int
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}
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func (c *captureLeafNodeRandomIPLogger) Debugf(format string, v ...interface{}) {
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msg := fmt.Sprintf(format, v...)
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if strings.Contains(msg, "hostname_to_resolve") {
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ippos := strings.Index(msg, "127.0.0.")
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if ippos != -1 {
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n := int(msg[ippos+8] - '1')
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c.ips[n]++
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for _, v := range c.ips {
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if v < 2 {
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return
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}
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}
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// All IPs got at least some hit, we are done.
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c.ch <- struct{}{}
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}
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}
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}
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func TestLeafNodeRandomIP(t *testing.T) {
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u, err := url.Parse("nats://hostname_to_resolve:1234")
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if err != nil {
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t.Fatalf("Error parsing: %v", err)
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}
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resolver := &myDummyDNSResolver{ips: []string{"127.0.0.1", "127.0.0.2", "127.0.0.3"}}
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o := DefaultOptions()
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o.Host = "127.0.0.1"
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o.Port = -1
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o.LeafNode.Port = 0
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o.LeafNode.Remotes = []*RemoteLeafOpts{&RemoteLeafOpts{URL: u}}
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o.LeafNode.ReconnectInterval = 50 * time.Millisecond
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o.LeafNode.resolver = resolver
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o.LeafNode.dialTimeout = 15 * time.Millisecond
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s := RunServer(o)
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defer s.Shutdown()
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l := &captureLeafNodeRandomIPLogger{ch: make(chan struct{})}
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s.SetLogger(l, true, true)
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select {
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case <-l.ch:
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case <-time.After(3 * time.Second):
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t.Fatalf("Does not seem to have used random IPs")
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}
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}
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