io.rsocket.micrometer.MicrometerDuplexConnectionInterceptor Maven / Gradle / Ivy
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/*
* Copyright 2015-2018 the original author or 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.rsocket.micrometer;
import io.micrometer.core.instrument.Meter;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Tag;
import io.rsocket.DuplexConnection;
import io.rsocket.frame.FrameType;
import io.rsocket.plugins.DuplexConnectionInterceptor;
import java.util.Objects;
/**
* An implementation of {@link DuplexConnectionInterceptor} that intercepts frames and gathers
* Micrometer metrics about them.
*
* The metric is called {@code rsocket.frame} and is tagged with {@code connection.type} ({@link
* Type}), {@code frame.type} ({@link FrameType}), and any additional configured tags. {@code
* rsocket.duplex.connection.close} and {@code rsocket.duplex.connection.dispose} metrics, tagged
* with {@code connection.type} ({@link Type}) and any additional configured tags are also
* collected.
*
* @see Micrometer
*/
public final class MicrometerDuplexConnectionInterceptor implements DuplexConnectionInterceptor {
private final MeterRegistry meterRegistry;
private final Tag[] tags;
/**
* Creates a new {@link DuplexConnectionInterceptor}.
*
* @param meterRegistry the {@link MeterRegistry} to use to create {@link Meter}s.
* @param tags the additional tags to attach to each {@link Meter}
* @throws NullPointerException if {@code meterRegistry} is {@code null}
*/
public MicrometerDuplexConnectionInterceptor(MeterRegistry meterRegistry, Tag... tags) {
this.meterRegistry = Objects.requireNonNull(meterRegistry, "meterRegistry must not be null");
this.tags = tags;
}
@Override
public MicrometerDuplexConnection apply(Type connectionType, DuplexConnection delegate) {
Objects.requireNonNull(connectionType, "connectionType must not be null");
Objects.requireNonNull(delegate, "delegate must not be null");
return new MicrometerDuplexConnection(connectionType, delegate, meterRegistry, tags);
}
}