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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;
import com.hivemq.client.internal.util.Checks;
import com.hivemq.client.mqtt.MqttClientExecutorConfigBuilder;
import io.reactivex.Scheduler;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.concurrent.Executor;
import java.util.function.Function;
/**
* @author Silvio Giebl
*/
public abstract class MqttClientExecutorConfigImplBuilder> {
private @Nullable Executor nettyExecutor;
private int nettyThreads = MqttClientExecutorConfigImpl.DEFAULT_NETTY_THREADS;
private @NotNull Scheduler applicationScheduler = MqttClientExecutorConfigImpl.DEFAULT_APPLICATION_SCHEDULER;
MqttClientExecutorConfigImplBuilder() {}
MqttClientExecutorConfigImplBuilder(final @NotNull MqttClientExecutorConfigImpl executorConfig) {
nettyExecutor = executorConfig.getRawNettyExecutor();
nettyThreads = executorConfig.getRawNettyThreads();
applicationScheduler = executorConfig.getApplicationScheduler();
}
abstract @NotNull B self();
public @NotNull B nettyExecutor(final @Nullable Executor nettyExecutor) {
this.nettyExecutor = nettyExecutor;
return self();
}
public @NotNull B nettyThreads(final int nettyThreads) {
if (nettyThreads <= 0) {
throw new IllegalArgumentException(
"Number of Netty threads must be greater than 0. Found: " + nettyThreads);
}
this.nettyThreads = nettyThreads;
return self();
}
public @NotNull B applicationScheduler(final @Nullable Scheduler applicationScheduler) {
this.applicationScheduler = Checks.notNull(applicationScheduler, "Application scheduler");
return self();
}
public @NotNull MqttClientExecutorConfigImpl build() {
return new MqttClientExecutorConfigImpl(nettyExecutor, nettyThreads, applicationScheduler);
}
public static class Default extends MqttClientExecutorConfigImplBuilder
implements MqttClientExecutorConfigBuilder {
public Default() {}
Default(final @NotNull MqttClientExecutorConfigImpl executorConfig) {
super(executorConfig);
}
@Override
@NotNull Default self() {
return this;
}
}
public static class Nested extends MqttClientExecutorConfigImplBuilder>
implements MqttClientExecutorConfigBuilder.Nested {
private final @NotNull Function parentConsumer;
Nested(
final @NotNull MqttClientExecutorConfigImpl executorConfig,
final @NotNull Function parentConsumer) {
super(executorConfig);
this.parentConsumer = parentConsumer;
}
@Override
@NotNull Nested
self() {
return this;
}
@Override
public @NotNull P applyExecutorConfig() {
return parentConsumer.apply(build());
}
}
}