minio/pkg/dsync/retry_test.go
Harshavardhana e9b2bf00ad Support MinIO to be deployed on more than 32 nodes (#8492)
This PR implements locking from a global entity into
a more localized set level entity, allowing for locks
to be held only on the resources which are writing
to a collection of disks rather than a global level.

In this process this PR also removes the top-level
limit of 32 nodes to an unlimited number of nodes. This
is a precursor change before bring in bucket expansion.
2019-11-13 12:17:45 -08:00

83 lines
2.1 KiB
Go

/*
* Minio Cloud Storage, (C) 2017 Minio, Inc.
*
* 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 dsync
import (
"testing"
"time"
)
// Tests for retry timer.
func TestRetryTimerSimple(t *testing.T) {
doneCh := make(chan struct{})
attemptCh := newRetryTimerSimple(doneCh)
i := <-attemptCh
if i != 0 {
close(doneCh)
t.Fatalf("Invalid attempt counter returned should be 0, found %d instead", i)
}
i = <-attemptCh
if i <= 0 {
close(doneCh)
t.Fatalf("Invalid attempt counter returned should be greater than 0, found %d instead", i)
}
close(doneCh)
_, ok := <-attemptCh
if ok {
t.Fatal("Attempt counter should be closed")
}
}
// Test retry time with no jitter.
func TestRetryTimerWithNoJitter(t *testing.T) {
doneCh := make(chan struct{})
// No jitter
attemptCh := newRetryTimerWithJitter(time.Millisecond, 5*time.Millisecond, NoJitter, doneCh)
i := <-attemptCh
if i != 0 {
close(doneCh)
t.Fatalf("Invalid attempt counter returned should be 0, found %d instead", i)
}
// Loop through the maximum possible attempt.
for i = range attemptCh {
if i == 30 {
close(doneCh)
}
}
_, ok := <-attemptCh
if ok {
t.Fatal("Attempt counter should be closed")
}
}
// Test retry time with Jitter greater than MaxJitter.
func TestRetryTimerWithJitter(t *testing.T) {
doneCh := make(chan struct{})
// Jitter will be set back to 1.0
attemptCh := newRetryTimerWithJitter(time.Second, 30*time.Second, 2.0, doneCh)
i := <-attemptCh
if i != 0 {
close(doneCh)
t.Fatalf("Invalid attempt counter returned should be 0, found %d instead", i)
}
close(doneCh)
_, ok := <-attemptCh
if ok {
t.Fatal("Attempt counter should be closed")
}
}