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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.internal.util.InetSocketAddressUtil;
import com.hivemq.client.mqtt.MqttProxyConfigBuilder;
import com.hivemq.client.mqtt.MqttProxyProtocol;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
/**
* @author Silvio Giebl
*/
public abstract class MqttProxyConfigImplBuilder> {
private @NotNull MqttProxyProtocol protocol = MqttProxyConfigImpl.DEFAULT_PROXY_PROTOCOL;
private @Nullable InetSocketAddress address;
private @NotNull Object host = MqttProxyConfigImpl.DEFAULT_PROXY_HOST; // String or InetAddress
private int port = -1;
private @Nullable String username;
private @Nullable String password;
private int handshakeTimeoutMs = MqttProxyConfigImpl.DEFAULT_HANDSHAKE_TIMEOUT_MS;
MqttProxyConfigImplBuilder() {}
MqttProxyConfigImplBuilder(final @Nullable MqttProxyConfigImpl proxyConfig) {
if (proxyConfig != null) {
protocol = proxyConfig.getProtocol();
address = proxyConfig.getAddress();
username = proxyConfig.getRawUsername();
password = proxyConfig.getRawPassword();
handshakeTimeoutMs = proxyConfig.getHandshakeTimeoutMs();
}
}
abstract @NotNull B self();
public @NotNull B protocol(final @Nullable MqttProxyProtocol protocol) {
this.protocol = Checks.notNull(protocol, "Proxy protocol");
return self();
}
public @NotNull B address(final @Nullable InetSocketAddress address) {
this.address = Checks.notNull(address, "Proxy address");
return self();
}
public @NotNull B host(final @Nullable String host) {
setProxyHost(Checks.notEmpty(host, "Proxy host"));
return self();
}
public @NotNull B host(final @Nullable InetAddress host) {
setProxyHost(Checks.notNull(host, "Proxy host"));
return self();
}
private void setProxyHost(final @NotNull Object host) {
this.host = host;
if (address != null) {
port = address.getPort();
address = null;
}
}
public @NotNull B port(final int port) {
this.port = Checks.unsignedShort(port, "Proxy port");
if (address != null) {
final InetAddress inetAddress = address.getAddress();
if (inetAddress != null) {
host = inetAddress;
} else {
host = address.getHostString();
}
address = null;
}
return self();
}
public @NotNull B username(final @Nullable String username) {
this.username = username;
return self();
}
public @NotNull B password(final @Nullable String password) {
this.password = password;
return self();
}
public @NotNull B handshakeTimeout(final long timeout, final @Nullable TimeUnit timeUnit) {
Checks.notNull(timeUnit, "Time unit");
this.handshakeTimeoutMs = (int) Checks.range(timeUnit.toMillis(timeout), 0, Integer.MAX_VALUE,
"Handshake timeout in milliseconds");
return self();
}
private @NotNull InetSocketAddress getAddress() {
if (address != null) {
return address;
}
if (host instanceof InetAddress) {
return new InetSocketAddress((InetAddress) host, getPort());
}
return InetSocketAddressUtil.create((String) host, getPort());
}
private int getPort() {
if (port != -1) {
return port;
}
switch (protocol) {
case SOCKS_4:
case SOCKS_5:
return MqttProxyConfigImpl.DEFAULT_SOCKS_PROXY_PORT;
case HTTP:
default:
return MqttProxyConfigImpl.DEFAULT_HTTP_PROXY_PORT;
}
}
public @NotNull MqttProxyConfigImpl build() {
return new MqttProxyConfigImpl(protocol, getAddress(), username, password, handshakeTimeoutMs);
}
public static class Default extends MqttProxyConfigImplBuilder implements MqttProxyConfigBuilder {
public Default() {}
Default(final @Nullable MqttProxyConfigImpl proxyConfig) {
super(proxyConfig);
}
@Override
@NotNull Default self() {
return this;
}
}
public static class Nested extends MqttProxyConfigImplBuilder>
implements MqttProxyConfigBuilder.Nested {
private final @NotNull Function parentConsumer;
Nested(
final @Nullable MqttProxyConfigImpl proxyConfig,
final @NotNull Function parentConsumer) {
super(proxyConfig);
this.parentConsumer = parentConsumer;
}
@Override
@NotNull Nested
self() {
return this;
}
@Override
public @NotNull P applyProxyConfig() {
return parentConsumer.apply(build());
}
}
}