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Merge pull request cockroachdb#2544 from xiang90/raft-inflight
raft: add flow control for progress
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| // Copyright 2015 CoreOS, 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 raft | ||
|
|
||
| import ( | ||
| "reflect" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestInflightsAdd(t *testing.T) { | ||
| // no rotating case | ||
| in := &inflights{ | ||
| size: 10, | ||
| buffer: make([]uint64, 10), | ||
| } | ||
|
|
||
| for i := 0; i < 5; i++ { | ||
| in.add(uint64(i)) | ||
| } | ||
|
|
||
| wantIn := &inflights{ | ||
| start: 0, | ||
| count: 5, | ||
| size: 10, | ||
| // ↓------------ | ||
| buffer: []uint64{0, 1, 2, 3, 4, 0, 0, 0, 0, 0}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in, wantIn) { | ||
| t.Fatalf("in = %+v, want %+v", in, wantIn) | ||
| } | ||
|
|
||
| for i := 5; i < 10; i++ { | ||
| in.add(uint64(i)) | ||
| } | ||
|
|
||
| wantIn2 := &inflights{ | ||
| start: 0, | ||
| count: 10, | ||
| size: 10, | ||
| // ↓--------------------------- | ||
| buffer: []uint64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in, wantIn2) { | ||
| t.Fatalf("in = %+v, want %+v", in, wantIn2) | ||
| } | ||
|
|
||
| // rotating case | ||
| in2 := &inflights{ | ||
| start: 5, | ||
| size: 10, | ||
| buffer: make([]uint64, 10), | ||
| } | ||
|
|
||
| for i := 0; i < 5; i++ { | ||
| in2.add(uint64(i)) | ||
| } | ||
|
|
||
| wantIn21 := &inflights{ | ||
| start: 5, | ||
| count: 5, | ||
| size: 10, | ||
| // ↓------------ | ||
| buffer: []uint64{0, 0, 0, 0, 0, 0, 1, 2, 3, 4}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in2, wantIn21) { | ||
| t.Fatalf("in = %+v, want %+v", in2, wantIn21) | ||
| } | ||
|
|
||
| for i := 5; i < 10; i++ { | ||
| in2.add(uint64(i)) | ||
| } | ||
|
|
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| wantIn22 := &inflights{ | ||
| start: 5, | ||
| count: 10, | ||
| size: 10, | ||
| // -------------- ↓------------ | ||
| buffer: []uint64{5, 6, 7, 8, 9, 0, 1, 2, 3, 4}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in2, wantIn22) { | ||
| t.Fatalf("in = %+v, want %+v", in2, wantIn22) | ||
| } | ||
| } | ||
|
|
||
| func TestInflightFreeTo(t *testing.T) { | ||
| // no rotating case | ||
| in := newInflights(10) | ||
| for i := 0; i < 10; i++ { | ||
| in.add(uint64(i)) | ||
| } | ||
|
|
||
| in.freeTo(4) | ||
|
|
||
| wantIn := &inflights{ | ||
| start: 5, | ||
| count: 5, | ||
| size: 10, | ||
| // ↓------------ | ||
| buffer: []uint64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in, wantIn) { | ||
| t.Fatalf("in = %+v, want %+v", in, wantIn) | ||
| } | ||
|
|
||
| in.freeTo(8) | ||
|
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| wantIn2 := &inflights{ | ||
| start: 9, | ||
| count: 1, | ||
| size: 10, | ||
| // ↓ | ||
| buffer: []uint64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in, wantIn2) { | ||
| t.Fatalf("in = %+v, want %+v", in, wantIn2) | ||
| } | ||
|
|
||
| // rotating case | ||
| for i := 10; i < 15; i++ { | ||
| in.add(uint64(i)) | ||
| } | ||
|
|
||
| in.freeTo(12) | ||
|
|
||
| wantIn3 := &inflights{ | ||
| start: 3, | ||
| count: 2, | ||
| size: 10, | ||
| // ↓----- | ||
| buffer: []uint64{10, 11, 12, 13, 14, 5, 6, 7, 8, 9}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in, wantIn3) { | ||
| t.Fatalf("in = %+v, want %+v", in, wantIn3) | ||
| } | ||
| } | ||
|
|
||
| func TestInflightFreeFirstOne(t *testing.T) { | ||
| in := newInflights(10) | ||
| for i := 0; i < 10; i++ { | ||
| in.add(uint64(i)) | ||
| } | ||
|
|
||
| in.freeFirstOne() | ||
|
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| wantIn := &inflights{ | ||
| start: 1, | ||
| count: 9, | ||
| size: 10, | ||
| // ↓------------------------ | ||
| buffer: []uint64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, | ||
| } | ||
|
|
||
| if !reflect.DeepEqual(in, wantIn) { | ||
| t.Fatalf("in = %+v, want %+v", in, wantIn) | ||
| } | ||
| } |
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