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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
/*
* Copyright 2018 dc-square and the HiveMQ MQTT Client Project
*
* 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.MqttClientSslConfig;
import com.hivemq.client.mqtt.MqttClientTransportConfigBuilder;
import com.hivemq.client.mqtt.MqttWebSocketConfig;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.function.Function;
import static com.hivemq.client.mqtt.MqttClient.*;
/**
* @author Silvio Giebl
*/
public abstract class MqttClientTransportConfigImplBuilder> {
private @Nullable InetSocketAddress serverAddress;
private @NotNull Object serverHost = DEFAULT_SERVER_HOST; // String or InetAddress
private int serverPort = -1;
private @Nullable MqttClientSslConfigImpl sslConfig;
private @Nullable MqttWebSocketConfigImpl webSocketConfig;
MqttClientTransportConfigImplBuilder() {}
MqttClientTransportConfigImplBuilder(final @NotNull MqttClientTransportConfigImpl transportConfig) {
set(transportConfig);
}
MqttClientTransportConfigImplBuilder(final @NotNull MqttClientTransportConfigImplBuilder builder) {
serverAddress = builder.serverAddress;
serverHost = builder.serverHost;
serverPort = builder.serverPort;
sslConfig = builder.sslConfig;
webSocketConfig = builder.webSocketConfig;
}
void set(final @NotNull MqttClientTransportConfigImpl transportConfig) {
serverAddress = transportConfig.getServerAddress();
sslConfig = transportConfig.getRawSslConfig();
webSocketConfig = transportConfig.getRawWebSocketConfig();
}
abstract @NotNull B self();
public @NotNull B serverAddress(final @Nullable InetSocketAddress address) {
this.serverAddress = Checks.notNull(address, "Server address");
return self();
}
public @NotNull B serverHost(final @Nullable String host) {
setServerHost(Checks.notEmpty(host, "Server host"));
return self();
}
public @NotNull B serverHost(final @Nullable InetAddress host) {
setServerHost(Checks.notNull(host, "Server host"));
return self();
}
private void setServerHost(final @NotNull Object serverHost) {
this.serverHost = serverHost;
if (serverAddress != null) {
serverPort = serverAddress.getPort();
serverAddress = null;
}
}
public @NotNull B serverPort(final int port) {
this.serverPort = Checks.unsignedShort(port, "Server port");
if (serverAddress != null) {
final InetAddress inetAddress = serverAddress.getAddress();
if (inetAddress != null) {
serverHost = inetAddress;
} else {
serverHost = serverAddress.getHostString();
}
serverAddress = null;
}
return self();
}
public @NotNull B sslWithDefaultConfig() {
this.sslConfig = MqttClientSslConfigImpl.DEFAULT;
return self();
}
public @NotNull B sslConfig(final @Nullable MqttClientSslConfig sslConfig) {
this.sslConfig = Checks.notImplementedOrNull(sslConfig, MqttClientSslConfigImpl.class, "SSL config");
return self();
}
public @NotNull MqttClientSslConfigImplBuilder.Nested sslConfig() {
return new MqttClientSslConfigImplBuilder.Nested<>(sslConfig, this::sslConfig);
}
public @NotNull B webSocketWithDefaultConfig() {
this.webSocketConfig = MqttWebSocketConfigImpl.DEFAULT;
return self();
}
public @NotNull B webSocketConfig(final @Nullable MqttWebSocketConfig webSocketConfig) {
this.webSocketConfig =
Checks.notImplementedOrNull(webSocketConfig, MqttWebSocketConfigImpl.class, "WebSocket config");
return self();
}
public @NotNull MqttWebSocketConfigImplBuilder.Nested webSocketConfig() {
return new MqttWebSocketConfigImplBuilder.Nested<>(webSocketConfig, this::webSocketConfig);
}
private @NotNull InetSocketAddress getServerAddress() {
if (serverAddress != null) {
return serverAddress;
}
if (serverHost instanceof InetAddress) {
return new InetSocketAddress((InetAddress) serverHost, getServerPort());
}
return InetSocketAddress.createUnresolved((String) serverHost, getServerPort());
}
private int getServerPort() {
if (serverPort != -1) {
return serverPort;
}
if (sslConfig == null) {
if (webSocketConfig == null) {
return DEFAULT_SERVER_PORT;
}
return DEFAULT_SERVER_PORT_WEBSOCKET;
}
if (webSocketConfig == null) {
return DEFAULT_SERVER_PORT_SSL;
}
return DEFAULT_SERVER_PORT_WEBSOCKET_SSL;
}
@NotNull MqttClientTransportConfigImpl buildTransportConfig() {
return new MqttClientTransportConfigImpl(getServerAddress(), sslConfig, webSocketConfig);
}
public static class Default extends MqttClientTransportConfigImplBuilder
implements MqttClientTransportConfigBuilder {
public Default() {}
Default(final @NotNull MqttClientTransportConfigImpl transportConfig) {
super(transportConfig);
}
@Override
@NotNull Default self() {
return this;
}
@Override
public @NotNull MqttClientTransportConfigImpl build() {
return buildTransportConfig();
}
}
public static class Nested extends MqttClientTransportConfigImplBuilder>
implements MqttClientTransportConfigBuilder.Nested {
private final @NotNull Function parentConsumer;
public Nested(final @NotNull Function parentConsumer) {
this.parentConsumer = parentConsumer;
}
public Nested(
final @NotNull MqttClientTransportConfigImpl transportConfig,
final @NotNull Function parentConsumer) {
super(transportConfig);
this.parentConsumer = parentConsumer;
}
Nested(
final @NotNull MqttClientTransportConfigImplBuilder builder,
final @NotNull Function parentConsumer) {
super(builder);
this.parentConsumer = parentConsumer;
}
@Override
@NotNull Nested
self() {
return this;
}
@Override
public @NotNull P applyTransportConfig() {
return parentConsumer.apply(buildTransportConfig());
}
}
}