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HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support
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/*
* Copyright 2018-present HiveMQ and the HiveMQ Community
*
* 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 com.hivemq.client.internal.mqtt.lifecycle;
import com.hivemq.client.internal.util.Checks;
import com.hivemq.client.mqtt.lifecycle.MqttClientAutoReconnectBuilder;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
/**
* @author Silvio Giebl
*/
public abstract class MqttClientAutoReconnectImplBuilder> {
private long initialDelayNanos = MqttClientAutoReconnectImpl.DEFAULT_START_DELAY_NANOS;
private long maxDelayNanos = MqttClientAutoReconnectImpl.DEFAULT_MAX_DELAY_NANOS;
MqttClientAutoReconnectImplBuilder() {}
MqttClientAutoReconnectImplBuilder(final @Nullable MqttClientAutoReconnectImpl autoReconnect) {
if (autoReconnect != null) {
initialDelayNanos = autoReconnect.getInitialDelay(TimeUnit.NANOSECONDS);
maxDelayNanos = autoReconnect.getMaxDelay(TimeUnit.NANOSECONDS);
}
}
abstract @NotNull B self();
public @NotNull B initialDelay(final long initialDelay, final @Nullable TimeUnit timeUnit) {
if (initialDelay <= 0) {
throw new IllegalArgumentException("Initial delay must be positive.");
}
Checks.notNull(timeUnit, "Time unit");
this.initialDelayNanos = timeUnit.toNanos(initialDelay);
return self();
}
public @NotNull B maxDelay(final long maxDelay, final @Nullable TimeUnit timeUnit) {
if (maxDelay < 0) {
throw new IllegalArgumentException("Maximum delay must be positive or zero.");
}
Checks.notNull(timeUnit, "Time unit");
this.maxDelayNanos = timeUnit.toNanos(maxDelay);
return self();
}
public @NotNull MqttClientAutoReconnectImpl build() {
return new MqttClientAutoReconnectImpl(initialDelayNanos, maxDelayNanos);
}
public static class Default extends MqttClientAutoReconnectImplBuilder
implements MqttClientAutoReconnectBuilder {
public Default() {}
Default(final @Nullable MqttClientAutoReconnectImpl autoReconnect) {
super(autoReconnect);
}
@Override
@NotNull Default self() {
return this;
}
}
public static class Nested extends MqttClientAutoReconnectImplBuilder>
implements MqttClientAutoReconnectBuilder.Nested {
private final @NotNull Function parentConsumer;
public Nested(
final @Nullable MqttClientAutoReconnectImpl autoReconnect,
final @NotNull Function parentConsumer) {
super(autoReconnect);
this.parentConsumer = parentConsumer;
}
@Override
@NotNull Nested
self() {
return this;
}
@Override
public @NotNull P applyAutomaticReconnect() {
return parentConsumer.apply(build());
}
}
}