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RequestMetricSupport.java
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RequestMetricSupport.java
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/*
* Copyright 2016 LINE Corporation
*
* LINE Corporation licenses this file to you 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 com.linecorp.armeria.internal.common.metric;
import static com.linecorp.armeria.common.metric.MoreMeters.newDistributionSummary;
import static com.linecorp.armeria.common.metric.MoreMeters.newTimer;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.LongAdder;
import com.linecorp.armeria.client.ResponseTimeoutException;
import com.linecorp.armeria.client.WriteTimeoutException;
import com.linecorp.armeria.common.RequestContext;
import com.linecorp.armeria.common.SuccessFunction;
import com.linecorp.armeria.common.annotation.Nullable;
import com.linecorp.armeria.common.logging.ClientConnectionTimings;
import com.linecorp.armeria.common.logging.RequestLog;
import com.linecorp.armeria.common.logging.RequestLogProperty;
import com.linecorp.armeria.common.metric.MeterIdPrefix;
import com.linecorp.armeria.common.metric.MeterIdPrefixFunction;
import com.linecorp.armeria.server.RequestTimeoutException;
import io.micrometer.core.instrument.Counter;
import io.micrometer.core.instrument.DistributionSummary;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Timer;
import io.micrometer.core.instrument.distribution.DistributionStatisticConfig;
import io.netty.util.AttributeKey;
/**
* Collects the metric data and stores it into the {@link MeterRegistry}.
*/
public final class RequestMetricSupport {
/**
* Sets up request metrics.
*/
public static void setup(
RequestContext ctx, AttributeKey<Boolean> requestMetricsSetKey,
MeterIdPrefixFunction meterIdPrefixFunction, boolean server,
SuccessFunction successFunction, DistributionStatisticConfig distributionStatisticConfig) {
final Boolean isRequestMetricsSet = ctx.attr(requestMetricsSetKey);
if (Boolean.TRUE.equals(isRequestMetricsSet)) {
return;
}
ctx.setAttr(requestMetricsSetKey, true);
ctx.log()
.whenAvailable(RequestLogProperty.REQUEST_START_TIME,
RequestLogProperty.REQUEST_HEADERS,
RequestLogProperty.NAME,
RequestLogProperty.SESSION)
.thenAccept(log -> onRequest(log, meterIdPrefixFunction, server, successFunction,
distributionStatisticConfig));
}
private static void onRequest(
RequestLog log, MeterIdPrefixFunction meterIdPrefixFunction, boolean server,
SuccessFunction successFunction, DistributionStatisticConfig distributionStatisticConfig) {
final RequestContext ctx = log.context();
final MeterRegistry registry = ctx.meterRegistry();
final MeterIdPrefix activeRequestsId =
meterIdPrefixFunction.activeRequestPrefix(registry, log).append("active.requests");
final ActiveRequestMetrics activeRequestMetrics = MicrometerUtil.register(
registry, activeRequestsId, ActiveRequestMetrics.class,
(reg, prefix) ->
reg.gauge(prefix.name(), prefix.tags(),
new ActiveRequestMetrics(), ActiveRequestMetrics::doubleValue));
activeRequestMetrics.increment();
ctx.log().whenComplete().thenAccept(requestLog -> {
onResponse(requestLog, meterIdPrefixFunction, server, successFunction, distributionStatisticConfig);
activeRequestMetrics.decrement();
});
}
private static void onResponse(
RequestLog log, MeterIdPrefixFunction meterIdPrefixFunction, boolean server,
SuccessFunction successFunction, DistributionStatisticConfig distributionStatisticConfig) {
final RequestContext ctx = log.context();
final MeterRegistry registry = ctx.meterRegistry();
final MeterIdPrefix idPrefix = meterIdPrefixFunction.completeRequestPrefix(registry, log);
final boolean isSuccess = successFunction.isSuccess(ctx, log);
if (server) {
final ServiceRequestMetrics metrics = MicrometerUtil.register(
registry, idPrefix,
ServiceRequestMetrics.class,
(reg, idp) -> new DefaultServiceRequestMetrics(reg, idp, distributionStatisticConfig));
updateMetrics(log, metrics, isSuccess);
if (log.responseCause() instanceof RequestTimeoutException) {
metrics.requestTimeouts().increment();
}
return;
}
final ClientRequestMetrics metrics = MicrometerUtil.register(
registry, idPrefix,
ClientRequestMetrics.class,
(reg, idp) -> new DefaultClientRequestMetrics(reg, idp, distributionStatisticConfig));
updateMetrics(log, metrics, isSuccess);
final ClientConnectionTimings timings = log.connectionTimings();
if (timings != null) {
metrics.connectionAcquisitionDuration().record(timings.connectionAcquisitionDurationNanos(),
TimeUnit.NANOSECONDS);
final long dnsResolutionDurationNanos = timings.dnsResolutionDurationNanos();
if (dnsResolutionDurationNanos >= 0) {
metrics.dnsResolutionDuration().record(dnsResolutionDurationNanos, TimeUnit.NANOSECONDS);
}
final long socketConnectDurationNanos = timings.socketConnectDurationNanos();
if (socketConnectDurationNanos >= 0) {
metrics.socketConnectDuration().record(socketConnectDurationNanos, TimeUnit.NANOSECONDS);
}
final long pendingAcquisitionDurationNanos = timings.pendingAcquisitionDurationNanos();
if (pendingAcquisitionDurationNanos >= 0) {
metrics.pendingAcquisitionDuration().record(pendingAcquisitionDurationNanos,
TimeUnit.NANOSECONDS);
}
}
if (log.requestCause() != null) {
if (log.requestCause() instanceof WriteTimeoutException) {
metrics.writeTimeouts().increment();
}
}
if (log.responseCause() instanceof ResponseTimeoutException) {
metrics.responseTimeouts().increment();
}
final int childrenSize = log.children().size();
if (childrenSize > 0) {
updateRetryingClientMetrics(metrics, childrenSize, isSuccess);
}
}
private static void updateMetrics(
RequestLog log, RequestMetrics metrics,
boolean isSuccess) {
metrics.requestDuration().record(log.requestDurationNanos(), TimeUnit.NANOSECONDS);
metrics.requestLength().record(log.requestLength());
metrics.responseDuration().record(log.responseDurationNanos(), TimeUnit.NANOSECONDS);
metrics.responseLength().record(log.responseLength());
metrics.totalDuration().record(log.totalDurationNanos(), TimeUnit.NANOSECONDS);
if (isSuccess) {
metrics.success().increment();
} else {
metrics.failure().increment();
}
}
private static void updateRetryingClientMetrics(
ClientRequestMetrics metrics, int childrenSize, boolean isSuccess) {
metrics.actualRequests().increment(childrenSize);
if (isSuccess) {
metrics.successAttempts().record(childrenSize);
} else {
metrics.failureAttempts().record(childrenSize);
}
}
private RequestMetricSupport() {}
// metrics that only needed to be called when a request completed
private interface RequestMetrics {
Counter success();
Counter failure();
Timer requestDuration();
DistributionSummary requestLength();
Timer responseDuration();
DistributionSummary responseLength();
Timer totalDuration();
}
private interface ClientRequestMetrics extends RequestMetrics {
Counter actualRequests();
Timer connectionAcquisitionDuration();
Timer dnsResolutionDuration();
Timer socketConnectDuration();
Timer pendingAcquisitionDuration();
Counter writeTimeouts();
Counter responseTimeouts();
DistributionSummary successAttempts();
DistributionSummary failureAttempts();
}
private interface ServiceRequestMetrics extends RequestMetrics {
Counter requestTimeouts();
}
private static final class ActiveRequestMetrics extends LongAdder {}
private abstract static class AbstractRequestMetrics implements RequestMetrics {
private final Counter success;
private final Counter failure;
private final Timer requestDuration;
private final DistributionSummary requestLength;
private final Timer responseDuration;
private final DistributionSummary responseLength;
private final Timer totalDuration;
AbstractRequestMetrics(MeterRegistry parent, MeterIdPrefix idPrefix,
DistributionStatisticConfig distributionStatisticConfig) {
final String requests = idPrefix.name("requests");
success = parent.counter(requests, idPrefix.tags("result", "success"));
failure = parent.counter(requests, idPrefix.tags("result", "failure"));
requestDuration = newTimer(parent, idPrefix.name("request.duration"), idPrefix.tags(),
distributionStatisticConfig);
requestLength = newDistributionSummary(parent, idPrefix.name("request.length"),
idPrefix.tags(), distributionStatisticConfig);
responseDuration = newTimer(parent, idPrefix.name("response.duration"), idPrefix.tags(),
distributionStatisticConfig);
responseLength = newDistributionSummary(parent, idPrefix.name("response.length"),
idPrefix.tags(), distributionStatisticConfig);
totalDuration = newTimer(parent, idPrefix.name("total.duration"), idPrefix.tags(),
distributionStatisticConfig);
}
@Override
public Counter success() {
return success;
}
@Override
public Counter failure() {
return failure;
}
@Override
public Timer requestDuration() {
return requestDuration;
}
@Override
public DistributionSummary requestLength() {
return requestLength;
}
@Override
public Timer responseDuration() {
return responseDuration;
}
@Override
public DistributionSummary responseLength() {
return responseLength;
}
@Override
public Timer totalDuration() {
return totalDuration;
}
}
private static class DefaultClientRequestMetrics
extends AbstractRequestMetrics implements ClientRequestMetrics {
private final MeterRegistry parent;
private final MeterIdPrefix idPrefix;
private final Timer connectionAcquisitionDuration;
private final Timer dnsResolutionDuration;
private final Timer socketConnectDuration;
private final Timer pendingAcquisitionDuration;
private final Counter writeTimeouts;
private final Counter responseTimeouts;
@Nullable
private Counter actualRequests;
@Nullable
private DistributionSummary successAttempts;
@Nullable
private DistributionSummary failureAttempts;
DefaultClientRequestMetrics(MeterRegistry parent, MeterIdPrefix idPrefix,
DistributionStatisticConfig distributionStatisticConfig) {
super(parent, idPrefix, distributionStatisticConfig);
this.parent = parent;
this.idPrefix = idPrefix;
connectionAcquisitionDuration = newTimer(
parent, idPrefix.name("connection.acquisition.duration"), idPrefix.tags());
dnsResolutionDuration = newTimer(
parent, idPrefix.name("dns.resolution.duration"), idPrefix.tags());
socketConnectDuration = newTimer(
parent, idPrefix.name("socket.connect.duration"), idPrefix.tags());
pendingAcquisitionDuration = newTimer(
parent, idPrefix.name("pending.acquisition.duration"), idPrefix.tags());
final String timeouts = idPrefix.name("timeouts");
writeTimeouts = parent.counter(timeouts, idPrefix.tags("cause", "WriteTimeoutException"));
responseTimeouts = parent.counter(timeouts, idPrefix.tags("cause", "ResponseTimeoutException"));
}
@Override
public Counter actualRequests() {
if (actualRequests != null) {
return actualRequests;
}
return actualRequests = parent.counter(idPrefix.name("actual.requests"), idPrefix.tags());
}
@Override
public Timer connectionAcquisitionDuration() {
return connectionAcquisitionDuration;
}
@Override
public Timer dnsResolutionDuration() {
return dnsResolutionDuration;
}
@Override
public Timer socketConnectDuration() {
return socketConnectDuration;
}
@Override
public Timer pendingAcquisitionDuration() {
return pendingAcquisitionDuration;
}
@Override
public Counter writeTimeouts() {
return writeTimeouts;
}
@Override
public Counter responseTimeouts() {
return responseTimeouts;
}
@Override
public DistributionSummary successAttempts() {
if (successAttempts != null) {
return successAttempts;
}
return successAttempts = newDistributionSummary(parent,
idPrefix.name("actual.requests.attempts"),
idPrefix.tags("result", "success"));
}
@Override
public DistributionSummary failureAttempts() {
if (failureAttempts != null) {
return failureAttempts;
}
return failureAttempts = newDistributionSummary(parent,
idPrefix.name("actual.requests.attempts"),
idPrefix.tags("result", "failure"));
}
}
private static class DefaultServiceRequestMetrics
extends AbstractRequestMetrics implements ServiceRequestMetrics {
private final Counter requestTimeouts;
DefaultServiceRequestMetrics(MeterRegistry parent, MeterIdPrefix idPrefix,
DistributionStatisticConfig distributionStatisticConfig) {
super(parent, idPrefix, distributionStatisticConfig);
requestTimeouts = parent.counter(idPrefix.name("timeouts"),
idPrefix.tags("cause", "RequestTimeoutException"));
}
@Override
public Counter requestTimeouts() {
return requestTimeouts;
}
}
}