mirror of
https://github.com/openziti/ziti.git
synced 2026-10-09 22:24:30 +00:00
Andrew Martinez
128 lines
3.4 KiB
Go
128 lines
3.4 KiB
Go
/*
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Copyright NetFoundry Inc.
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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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https://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package raft
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import (
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"github.com/stretchr/testify/require"
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"testing"
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"time"
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)
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func TestIndexTracker(t *testing.T) {
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t.Run("index 1 can be set and notifies", func(t *testing.T) {
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req := require.New(t)
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indexTracker := &testTracker{
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NewIndexTracker(),
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}
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indexTracker.NotifyOfIndex(1)
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req.NoError(indexTracker.WaitForIndex(1, time.Now())) // if it's already complete, should work
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// If it never completes, should fail
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req.Error(indexTracker.WaitForIndex(2, time.Now().Add(100*time.Millisecond)))
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})
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t.Run("index 2 is received. no error", func(t *testing.T) {
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req := require.New(t)
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indexTracker := &testTracker{
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NewIndexTracker(),
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}
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indexTracker.notifyAsync(1, 20*time.Millisecond)
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indexTracker.notifyAsync(2, 20*time.Millisecond)
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req.NoError(indexTracker.WaitForIndex(2, time.Now().Add(100*time.Millisecond)))
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req.NoError(indexTracker.WaitForIndex(2, time.Now()))
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})
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t.Run("index 3 has time out errors until it is added", func(t *testing.T) {
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req := require.New(t)
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indexTracker := &testTracker{
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NewIndexTracker(),
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}
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//move the index forward 2
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indexTracker.notifyAsync(1, 5*time.Millisecond)
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indexTracker.notifyAsync(2, 20*time.Millisecond)
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//wait for index 2 to appear
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req.NoError(indexTracker.WaitForIndex(2, time.Now().Add(100*time.Millisecond)))
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//notify of index 3 after a delay
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//during the delay check to see if the index has arrived after varying levels of timeouts
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indexTracker.notifyAsync(3, 200*time.Millisecond)
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var results []<-chan error
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//add waits for index 3 starting a 30ms and increased by 30ms till 330ms
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for i := 0; i < 10; i++ {
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results = append(results, indexTracker.waitAsync(3, time.Duration((i+1)*30)*time.Millisecond))
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}
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//once index3Notified is true, no timeout errors should be received
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index3Notified := false
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for _, result := range results {
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err := <-result
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if index3Notified {
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if err != nil {
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req.Fail("received error after first notification of index received, expected no more errors")
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}
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} else {
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//no notification yet, if no error, that is the notification
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if err == nil {
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index3Notified = true
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}
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}
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}
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//make sure we didn't receive all errors and index 3 was eventually notified
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req.True(index3Notified, "index 3 was never received")
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})
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}
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// testTracker adds helper function used to power async index notification used in the above tests.
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type testTracker struct {
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IndexTracker
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}
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func (t *testTracker) notifyAsync(index uint64, after time.Duration) {
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go func() {
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time.Sleep(after)
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t.NotifyOfIndex(index)
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}()
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}
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func (t *testTracker) waitAsync(index uint64, timeout time.Duration) <-chan error {
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result := make(chan error, 1)
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go func() {
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err := t.WaitForIndex(index, time.Now().Add(timeout))
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if err == nil {
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close(result)
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} else {
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result <- err
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close(result)
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}
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}()
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return result
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}
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