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MicrometerHttpServerMetricsRecorder.java
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MicrometerHttpServerMetricsRecorder.java
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/*
* Copyright (c) 2019-2022 VMware, Inc. or its affiliates, 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
*
* https://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 reactor.netty.http.server;
import io.micrometer.core.instrument.Counter;
import io.micrometer.core.instrument.DistributionSummary;
import io.micrometer.core.instrument.Gauge;
import io.micrometer.core.instrument.Timer;
import reactor.netty.channel.MeterKey;
import reactor.netty.http.MicrometerHttpMetricsRecorder;
import reactor.netty.internal.util.MapUtils;
import reactor.util.annotation.Nullable;
import java.net.SocketAddress;
import java.time.Duration;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.LongAdder;
import static reactor.netty.Metrics.DATA_RECEIVED;
import static reactor.netty.Metrics.DATA_RECEIVED_TIME;
import static reactor.netty.Metrics.DATA_SENT;
import static reactor.netty.Metrics.DATA_SENT_TIME;
import static reactor.netty.Metrics.ERRORS;
import static reactor.netty.Metrics.HTTP_SERVER_PREFIX;
import static reactor.netty.Metrics.METHOD;
import static reactor.netty.Metrics.REGISTRY;
import static reactor.netty.Metrics.RESPONSE_TIME;
import static reactor.netty.Metrics.STATUS;
import static reactor.netty.Metrics.URI;
import static reactor.netty.http.server.HttpServerMeters.CONNECTIONS_ACTIVE;
import static reactor.netty.http.server.HttpServerMeters.ACTIVE_STREAMS;
/**
* @author Violeta Georgieva
* @since 0.9
*/
final class MicrometerHttpServerMetricsRecorder extends MicrometerHttpMetricsRecorder implements HttpServerMetricsRecorder {
final static MicrometerHttpServerMetricsRecorder INSTANCE = new MicrometerHttpServerMetricsRecorder();
private final static String PROTOCOL_VALUE_HTTP = "http";
private final LongAdder activeConnectionsAdder = new LongAdder();
private final LongAdder activeStreamsAdder = new LongAdder();
private final ConcurrentMap<String, LongAdder> activeConnectionsCache = new ConcurrentHashMap<>();
private final ConcurrentMap<String, LongAdder> activeStreamsCache = new ConcurrentHashMap<>();
private final ConcurrentMap<String, DistributionSummary> dataReceivedCache = new ConcurrentHashMap<>();
private final ConcurrentMap<String, DistributionSummary> dataSentCache = new ConcurrentHashMap<>();
private final ConcurrentMap<String, Counter> errorsCache = new ConcurrentHashMap<>();
private MicrometerHttpServerMetricsRecorder() {
super(HTTP_SERVER_PREFIX, PROTOCOL_VALUE_HTTP);
}
@Override
public void recordDataReceivedTime(String uri, String method, Duration time) {
MeterKey meterKey = new MeterKey(uri, null, method, null);
Timer dataReceivedTime = MapUtils.computeIfAbsent(dataReceivedTimeCache, meterKey,
key -> filter(Timer.builder(name() + DATA_RECEIVED_TIME)
.tags(HttpServerMeters.DataReceivedTimeTags.URI.getKeyName(), uri,
HttpServerMeters.DataReceivedTimeTags.METHOD.getKeyName(), method)
.register(REGISTRY)));
if (dataReceivedTime != null) {
dataReceivedTime.record(time);
}
}
@Override
public void recordDataSentTime(String uri, String method, String status, Duration time) {
MeterKey meterKey = new MeterKey(uri, null, method, status);
Timer dataSentTime = MapUtils.computeIfAbsent(dataSentTimeCache, meterKey,
key -> filter(Timer.builder(name() + DATA_SENT_TIME)
.tags(HttpServerMeters.DataSentTimeTags.URI.getKeyName(), uri,
HttpServerMeters.DataSentTimeTags.METHOD.getKeyName(), method,
HttpServerMeters.DataSentTimeTags.STATUS.getKeyName(), status)
.register(REGISTRY)));
if (dataSentTime != null) {
dataSentTime.record(time);
}
}
@Override
public void recordResponseTime(String uri, String method, String status, Duration time) {
Timer responseTime = getResponseTimeTimer(name() + RESPONSE_TIME, uri, method, status);
if (responseTime != null) {
responseTime.record(time);
}
}
@Nullable
final Timer getResponseTimeTimer(String name, String uri, String method, String status) {
MeterKey meterKey = new MeterKey(uri, null, method, status);
return MapUtils.computeIfAbsent(responseTimeCache, meterKey,
key -> filter(Timer.builder(name)
.tags(URI, uri, METHOD, method, STATUS, status)
.register(REGISTRY)));
}
@Override
public void recordDataReceived(SocketAddress remoteAddress, String uri, long bytes) {
DistributionSummary dataReceived = MapUtils.computeIfAbsent(dataReceivedCache, uri,
key -> filter(DistributionSummary.builder(name() + DATA_RECEIVED)
.baseUnit(HttpServerMeters.HTTP_SERVER_DATA_RECEIVED.getBaseUnit())
.tags(HttpServerMeters.HttpServerMetersTags.URI.getKeyName(), uri)
.register(REGISTRY)));
if (dataReceived != null) {
dataReceived.record(bytes);
}
}
@Override
public void recordDataSent(SocketAddress remoteAddress, String uri, long bytes) {
DistributionSummary dataSent = MapUtils.computeIfAbsent(dataSentCache, uri,
key -> filter(DistributionSummary.builder(name() + DATA_SENT)
.baseUnit(HttpServerMeters.HTTP_SERVER_DATA_SENT.getBaseUnit())
.tags(HttpServerMeters.HttpServerMetersTags.URI.getKeyName(), uri)
.register(REGISTRY)));
if (dataSent != null) {
dataSent.record(bytes);
}
}
@Override
public void incrementErrorsCount(SocketAddress remoteAddress, String uri) {
Counter errors = MapUtils.computeIfAbsent(errorsCache, uri,
key -> filter(Counter.builder(name() + ERRORS)
.tags(HttpServerMeters.HttpServerMetersTags.URI.getKeyName(), uri)
.register(REGISTRY)));
if (errors != null) {
errors.increment();
}
}
@Override
public void recordServerConnectionActive(SocketAddress localAddress) {
LongAdder adder = getServerConnectionAdder(localAddress);
if (adder != null) {
adder.increment();
}
}
@Override
public void recordServerConnectionInactive(SocketAddress localAddress) {
LongAdder adder = getServerConnectionAdder(localAddress);
if (adder != null) {
adder.decrement();
}
}
@Override
public void recordStreamOpened(SocketAddress localAddress) {
LongAdder adder = getActiveStreamsAdder(localAddress);
if (adder != null) {
adder.increment();
}
}
@Override
public void recordStreamClosed(SocketAddress localAddress) {
LongAdder adder = getActiveStreamsAdder(localAddress);
if (adder != null) {
adder.decrement();
}
}
@Override
public void recordDataReceived(SocketAddress remoteAddress, long bytes) {
// noop
}
@Override
public void recordDataSent(SocketAddress remoteAddress, long bytes) {
// noop
}
@Override
public void incrementErrorsCount(SocketAddress remoteAddress) {
// noop
}
@Override
public void recordTlsHandshakeTime(SocketAddress remoteAddress, Duration time, String status) {
// noop
}
@Override
public void recordConnectTime(SocketAddress remoteAddress, Duration time, String status) {
throw new UnsupportedOperationException();
}
@Override
public void recordResolveAddressTime(SocketAddress remoteAddress, Duration time, String status) {
throw new UnsupportedOperationException();
}
@Nullable
private LongAdder getActiveStreamsAdder(SocketAddress localAddress) {
String address = reactor.netty.Metrics.formatSocketAddress(localAddress);
return MapUtils.computeIfAbsent(activeStreamsCache, address,
key -> {
Gauge gauge = filter(
Gauge.builder(ACTIVE_STREAMS.getName(), activeStreamsAdder, LongAdder::longValue)
.tags(HttpServerMeters.ActiveStreamsTags.URI.getKeyName(), PROTOCOL_VALUE_HTTP,
HttpServerMeters.ActiveStreamsTags.LOCAL_ADDRESS.getKeyName(), address)
.register(REGISTRY));
return gauge != null ? activeStreamsAdder : null;
});
}
@Nullable
private LongAdder getServerConnectionAdder(SocketAddress localAddress) {
String address = reactor.netty.Metrics.formatSocketAddress(localAddress);
return MapUtils.computeIfAbsent(activeConnectionsCache, address,
key -> {
Gauge gauge = filter(
Gauge.builder(CONNECTIONS_ACTIVE.getName(), activeConnectionsAdder, LongAdder::longValue)
.tags(HttpServerMeters.ConnectionsActiveTags.URI.getKeyName(), PROTOCOL_VALUE_HTTP,
HttpServerMeters.ConnectionsActiveTags.LOCAL_ADDRESS.getKeyName(), address)
.register(REGISTRY));
return gauge != null ? activeConnectionsAdder : null;
});
}
}