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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| // Copyright 2022 PingCAP, 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 logger | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "go.uber.org/zap" | ||
| "go.uber.org/zap/zapcore" | ||
| ) | ||
|
|
||
| type testingLog struct { | ||
| *testing.T | ||
| } | ||
|
|
||
| func (t *testingLog) Write(b []byte) (int, error) { | ||
| t.Logf("%s", b) | ||
| return len(b), nil | ||
| } | ||
|
|
||
| // CreateLoggerForTest creates a logger for unit tests. | ||
| func CreateLoggerForTest(t *testing.T) *zap.Logger { | ||
| return zap.New(zapcore.NewCore( | ||
| zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig()), | ||
| zapcore.AddSync(&testingLog{t}), | ||
| zap.InfoLevel, | ||
| )).Named(t.Name()) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| // Copyright 2017 PingCAP, 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 systimemon | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| // StartMonitor calls systimeErrHandler if system time jump backward. | ||
| func StartMonitor(ctx context.Context, logger *zap.Logger, now func() time.Time, systimeErrHandler func(), successCallback func()) { | ||
| logger.Info("start system time monitor") | ||
| tick := time.NewTicker(100 * time.Millisecond) | ||
| defer tick.Stop() | ||
| tickCount := 0 | ||
| for { | ||
| last := now().UnixNano() | ||
| select { | ||
| case <-tick.C: | ||
| case <-ctx.Done(): | ||
| return | ||
| } | ||
| if now().UnixNano() < last { | ||
| logger.Error("system time jump backward", zap.Int64("last", last)) | ||
| systimeErrHandler() | ||
| } | ||
| // call successCallback per second. | ||
| tickCount++ | ||
| if tickCount >= 10 { | ||
| tickCount = 0 | ||
| successCallback() | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // Copyright 2017 PingCAP, 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 systimemon | ||
|
|
||
| import ( | ||
| "context" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/pingcap/TiProxy/lib/util/logger" | ||
| "github.com/pingcap/TiProxy/lib/util/waitgroup" | ||
| "github.com/stretchr/testify/require" | ||
| "go.uber.org/atomic" | ||
| ) | ||
|
|
||
| func TestSystimeMonitor(t *testing.T) { | ||
| errTriggered := atomic.NewBool(false) | ||
| nowTriggered := atomic.NewBool(false) | ||
| log := logger.CreateLoggerForTest(t) | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| var wg waitgroup.WaitGroup | ||
| wg.Run(func() { | ||
| StartMonitor(ctx, log, | ||
| func() time.Time { | ||
| if !nowTriggered.Load() { | ||
| nowTriggered.Store(true) | ||
| return time.Now() | ||
| } | ||
| return time.Now().Add(-2 * time.Second) | ||
| }, func() { | ||
| errTriggered.Store(true) | ||
| }, func() {}) | ||
| }) | ||
|
|
||
| require.Eventually(t, errTriggered.Load, time.Second, 10*time.Millisecond) | ||
| cancel() | ||
| wg.Wait() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| // Copyright 2022 PingCAP, 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 router | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "github.com/pingcap/TiProxy/pkg/metrics" | ||
| ) | ||
|
|
||
| func updateBackendStatusMetrics(addr string, prevStatus, curStatus BackendStatus) { | ||
| metrics.BackendStatusGauge.WithLabelValues(addr, prevStatus.String()).Set(0) | ||
| metrics.BackendStatusGauge.WithLabelValues(addr, curStatus.String()).Set(1) | ||
| } | ||
|
|
||
| func checkBackendStatusMetrics(addr string, status BackendStatus) bool { | ||
| val, err := metrics.ReadGauge(metrics.BackendStatusGauge.WithLabelValues(addr, status.String())) | ||
| if err != nil { | ||
| return false | ||
| } | ||
| return val == 1 | ||
| } | ||
|
|
||
| func addBackendConnMetrics(addr string) { | ||
| metrics.BackendConnGauge.WithLabelValues(addr).Add(1) | ||
| } | ||
|
|
||
| func subBackendConnMetrics(addr string) { | ||
| metrics.BackendConnGauge.WithLabelValues(addr).Sub(1) | ||
| } | ||
|
|
||
| func readBackendConnMetrics(addr string) (int, error) { | ||
| return metrics.ReadGauge(metrics.BackendConnGauge.WithLabelValues(addr)) | ||
| } | ||
|
|
||
| func succeedToLabel(succeed bool) string { | ||
| if succeed { | ||
| return "succeed" | ||
| } | ||
| return "fail" | ||
| } | ||
|
|
||
| func addMigrateMetrics(from, to string, succeed bool, startTime time.Time) { | ||
| resLabel := succeedToLabel(succeed) | ||
| metrics.MigrateCounter.WithLabelValues(from, to, resLabel).Inc() | ||
|
|
||
| cost := time.Since(startTime) | ||
| metrics.MigrateDurationHistogram.WithLabelValues(from, to, resLabel).Observe(float64(cost.Milliseconds())) | ||
| } | ||
|
|
||
| func readMigrateCounter(from, to string, succeed bool) (int, error) { | ||
| return metrics.ReadCounter(metrics.MigrateCounter.WithLabelValues(from, to, succeedToLabel(succeed))) | ||
| } |
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