| /* |
| * Copyright 2017 The gRPC Authors |
| * |
| * 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 io.grpc.internal; |
| |
| import static io.grpc.internal.TimeProvider.SYSTEM_TIME_PROVIDER; |
| |
| import io.grpc.InternalChannelz.ChannelStats; |
| import io.grpc.InternalChannelz.ServerStats; |
| |
| /** |
| * A collection of call stats for channelz. |
| */ |
| final class CallTracer { |
| private final TimeProvider timeProvider; |
| private final LongCounter callsStarted = LongCounterFactory.create(); |
| private final LongCounter callsSucceeded = LongCounterFactory.create(); |
| private final LongCounter callsFailed = LongCounterFactory.create(); |
| private volatile long lastCallStartedNanos; |
| |
| CallTracer(TimeProvider timeProvider) { |
| this.timeProvider = timeProvider; |
| } |
| |
| public void reportCallStarted() { |
| callsStarted.add(1); |
| lastCallStartedNanos = timeProvider.currentTimeNanos(); |
| } |
| |
| public void reportCallEnded(boolean success) { |
| if (success) { |
| callsSucceeded.add(1); |
| } else { |
| callsFailed.add(1); |
| } |
| } |
| |
| void updateBuilder(ChannelStats.Builder builder) { |
| builder |
| .setCallsStarted(callsStarted.value()) |
| .setCallsSucceeded(callsSucceeded.value()) |
| .setCallsFailed(callsFailed.value()) |
| .setLastCallStartedNanos(lastCallStartedNanos); |
| } |
| |
| void updateBuilder(ServerStats.Builder builder) { |
| builder |
| .setCallsStarted(callsStarted.value()) |
| .setCallsSucceeded(callsSucceeded.value()) |
| .setCallsFailed(callsFailed.value()) |
| .setLastCallStartedNanos(lastCallStartedNanos); |
| } |
| |
| public interface Factory { |
| CallTracer create(); |
| } |
| |
| static final Factory DEFAULT_FACTORY = new Factory() { |
| @Override |
| public CallTracer create() { |
| return new CallTracer(SYSTEM_TIME_PROVIDER); |
| } |
| }; |
| |
| public static Factory getDefaultFactory() { |
| return DEFAULT_FACTORY; |
| } |
| } |