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[aggregator] Followers
CanLead before the first flush is persisted (#…
…4169) * Have follower report CanLead if there are no flush times * Refactor out common integration test multiServerSetup
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101 changes: 101 additions & 0 deletions
101
src/aggregator/integration/multi_server_follower_health_init_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| //go:build integration | ||
| // +build integration | ||
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| // Copyright (c) 2022 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
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| package integration | ||
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| import ( | ||
| "sync" | ||
| "sync/atomic" | ||
| "testing" | ||
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| httpserver "github.com/m3db/m3/src/aggregator/server/http" | ||
| xtest "github.com/m3db/m3/src/x/test" | ||
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| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
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| func TestMultiServerFollowerHealthInit(t *testing.T) { | ||
| if testing.Short() { | ||
| t.SkipNow() | ||
| } | ||
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| testParams := newTestServerSetups(t) | ||
| servers := testParams.servers | ||
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| // Start the servers. | ||
| log := xtest.NewLogger(t) | ||
| log.Info("test forwarding pipeline") | ||
| for i, server := range servers { | ||
| require.NoError(t, server.startServer()) | ||
| log.Sugar().Infof("server %d is now up", i) | ||
| } | ||
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| // Stop the servers. | ||
| for i, server := range servers { | ||
| i := i | ||
| server := server | ||
| defer func() { | ||
| require.NoError(t, server.stopServer()) | ||
| log.Sugar().Infof("server %d is now down", i) | ||
| }() | ||
| } | ||
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| // Waiting for two leaders to come up. | ||
| var ( | ||
| leaders = make(map[int]struct{}) | ||
| leaderCh = make(chan int, len(servers)/2) | ||
| numLeaders int32 | ||
| wg sync.WaitGroup | ||
| ) | ||
| wg.Add(len(servers) / 2) | ||
| for i, server := range servers { | ||
| i, server := i, server | ||
| go func() { | ||
| if err := server.waitUntilLeader(); err == nil { | ||
| res := int(atomic.AddInt32(&numLeaders, 1)) | ||
| if res <= len(servers)/2 { | ||
| leaderCh <- i | ||
| wg.Done() | ||
| } | ||
| } | ||
| }() | ||
| } | ||
| wg.Wait() | ||
| close(leaderCh) | ||
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| for i := range leaderCh { | ||
| leaders[i] = struct{}{} | ||
| log.Sugar().Infof("server %d has become the leader", i) | ||
| } | ||
| log.Sugar().Infof("%d servers have become leaders", len(leaders)) | ||
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| for _, server := range servers { | ||
| var resp httpserver.StatusResponse | ||
| require.NoError(t, server.getStatusResponse(httpserver.StatusPath, &resp)) | ||
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| // No data has been written to the aggregators yet, but all servers (including the | ||
| // followers) should be able to lead. | ||
| assert.True(t, resp.Status.FlushStatus.CanLead) | ||
| } | ||
| } |
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