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* Instrumentation * Updating comments * Adding global statistics along with GCS Connector specific statistics * testing * Resolving comments * Resolving comments
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gcs/src/main/java/com/google/cloud/hadoop/fs/gcs/GhfsGlobalStorageStatistics.java
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gcs/src/main/java/com/google/cloud/hadoop/fs/gcs/GhfsStreamStats.java
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| /* | ||
| * Copyright 2023 Google Inc. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package com.google.cloud.hadoop.fs.gcs; | ||
|
|
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| import javax.annotation.Nonnull; | ||
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| class GhfsStreamStats { | ||
| private final GhfsGlobalStorageStatistics storageStatistics; | ||
| private final GhfsStatistic durationStat; | ||
| private final Object context; | ||
| private long maxLatencyNs; | ||
| private int operationCount; | ||
| private long minLatencyNs; | ||
| private long totalNs; | ||
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| GhfsStreamStats( | ||
| @Nonnull GhfsGlobalStorageStatistics storageStatistics, | ||
| GhfsStatistic durationStat, | ||
| Object context) { | ||
| this.storageStatistics = storageStatistics; | ||
| this.durationStat = durationStat; | ||
| this.context = context; | ||
| } | ||
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| void close() { | ||
| if (operationCount == 0) { | ||
| return; | ||
| } | ||
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| storageStatistics.updateStats( | ||
| durationStat, | ||
| toMillis(minLatencyNs), | ||
| toMillis(maxLatencyNs), | ||
| toMillis(totalNs), | ||
| operationCount, | ||
| context); | ||
| this.totalNs = 0; | ||
| this.operationCount = 0; | ||
| } | ||
|
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| void updateWriteStreamStats(int len, long start) { | ||
| updateStats(start); | ||
| storageStatistics.streamWriteBytes(len); | ||
| } | ||
|
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| void updateReadStreamSeekStats(long start) { | ||
| updateStats(start); | ||
| } | ||
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| void updateReadStreamStats(int len, long start) { | ||
| updateStats(start); | ||
| storageStatistics.streamReadBytes(len); | ||
| } | ||
|
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| private static long toMillis(long nano) { | ||
| return nano / 1000_000; | ||
| } | ||
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| private void updateStats(long start) { | ||
| long latency = System.nanoTime() - start; | ||
| this.maxLatencyNs = Math.max(latency, this.maxLatencyNs); | ||
| if (operationCount == 0) { | ||
| this.minLatencyNs = latency; | ||
| } else { | ||
| this.minLatencyNs = Math.min(latency, this.minLatencyNs); | ||
| } | ||
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| this.totalNs += latency; | ||
| this.operationCount++; | ||
| } | ||
| } |
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