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// Copyright 2015-2019 SWIM.AI inc.
//
// 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 swim.mqtt;
import swim.codec.Debug;
import swim.codec.Encoder;
import swim.codec.Format;
import swim.codec.Output;
import swim.codec.OutputBuffer;
import swim.structure.Data;
import swim.util.Murmur3;
public final class MqttConnect extends MqttPacket implements Debug {
final int packetFlags;
final String protocolName;
final int protocolLevel;
final int connectFlags;
final int keepAlive;
final String clientId;
final String willTopic;
final Data willMessage;
final String username;
final Data password;
MqttConnect(int packetFlags, String protocolName, int protocolLevel, int connectFlags,
int keepAlive, String clientId, String willTopic, Data willMessage,
String username, Data password) {
this.packetFlags = packetFlags;
this.protocolName = protocolName;
this.protocolLevel = protocolLevel;
this.connectFlags = connectFlags;
this.keepAlive = keepAlive;
this.clientId = clientId;
this.willTopic = willTopic;
this.willMessage = willMessage != null ? willMessage.commit() : null;
this.username = username;
this.password = password != null ? password.commit() : null;
}
@Override
public int packetType() {
return 1;
}
@Override
public int packetFlags() {
return this.packetFlags;
}
public MqttConnect packetFlags(int packetFlags) {
return new MqttConnect(packetFlags, this.protocolName, this.protocolLevel,
this.connectFlags, this.keepAlive, this.clientId,
this.willTopic, this.willMessage, this.username, this.password);
}
public String protocolName() {
return this.protocolName;
}
public MqttConnect protocolName(String protocolName) {
return new MqttConnect(this.packetFlags, protocolName, this.protocolLevel,
this.connectFlags, this.keepAlive, this.clientId,
this.willTopic, this.willMessage, this.username, this.password);
}
public int protocolLevel() {
return this.protocolLevel;
}
public MqttConnect protocolLevel(int protocolLevel) {
return new MqttConnect(this.packetFlags, this.protocolName, protocolLevel,
this.connectFlags, this.keepAlive, this.clientId,
this.willTopic, this.willMessage, this.username, this.password);
}
public int connectFlags() {
return this.connectFlags;
}
public int keepAlive() {
return this.keepAlive;
}
public MqttConnect keepAlive(int keepAlive) {
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
this.connectFlags, keepAlive, this.clientId, this.willTopic,
this.willMessage, this.username, this.password);
}
public String clientId() {
return this.clientId;
}
public MqttConnect clientId(String clientId) {
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
this.connectFlags, this.keepAlive, clientId, this.willTopic,
this.willMessage, this.username, this.password);
}
public boolean cleanSession() {
return (this.connectFlags & CLEAN_SESSION_FLAG) != 0;
}
public MqttConnect cleanSession(boolean cleanSession) {
final int connectFlags = cleanSession
? this.connectFlags | CLEAN_SESSION_FLAG
: this.connectFlags & ~CLEAN_SESSION_FLAG;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, this.willTopic,
this.willMessage, this.username, this.password);
}
public String willTopic() {
return this.willTopic;
}
public MqttConnect willTopic(String willTopic) {
final int connectFlags = willTopic != null && this.willMessage != null
? this.connectFlags | WILL_FLAG
: this.connectFlags & ~WILL_FLAG;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, willTopic,
this.willMessage, this.username, this.password);
}
public Data willMessage() {
return this.willMessage;
}
public MqttConnect willMessage(Data willMessage) {
final int connectFlags = this.willTopic != null && willMessage != null
? this.connectFlags | WILL_FLAG
: this.connectFlags & ~WILL_FLAG;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, this.willTopic,
willMessage != null ? willMessage.commit() : null,
this.username, this.password);
}
public MqttQoS willQoS() {
return MqttQoS.from((this.connectFlags & WILL_QOS_MASK) >>> WILL_QOS_SHIFT);
}
public MqttConnect willQoS(MqttQoS willQoS) {
final int connectFlags = this.connectFlags & ~WILL_QOS_MASK
| (willQoS.code << WILL_QOS_SHIFT) & WILL_QOS_MASK;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, this.willTopic,
this.willMessage, this.username, this.password);
}
public boolean willRetain() {
return (this.connectFlags & WILL_RETAIN_FLAG) != 0;
}
public MqttConnect willRetain(boolean willRetain) {
final int connectFlags = willRetain
? this.connectFlags | WILL_RETAIN_FLAG
: this.connectFlags & ~WILL_RETAIN_FLAG;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, this.willTopic,
this.willMessage, this.username, this.password);
}
public String username() {
return this.username;
}
public MqttConnect username(String username) {
final int connectFlags = username != null
? this.connectFlags | USERNAME_FLAG
: this.connectFlags & ~USERNAME_FLAG;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, this.willTopic,
this.willMessage, username, this.password);
}
public Data password() {
return this.password;
}
public MqttConnect password(Data password) {
final int connectFlags = password != null
? this.connectFlags | PASSWORD_FLAG
: this.connectFlags & ~PASSWORD_FLAG;
return new MqttConnect(this.packetFlags, this.protocolName, this.protocolLevel,
connectFlags, this.keepAlive, this.clientId, this.willTopic,
this.willMessage, this.username,
password != null ? password.commit() : null);
}
@Override
int bodySize(MqttEncoder mqtt) {
int size = mqtt.sizeOfString(this.protocolName) + 4;
size += mqtt.sizeOfString(this.clientId);
if ((this.connectFlags & WILL_FLAG) != 0) {
size += mqtt.sizeOfString(this.willTopic);
size += mqtt.sizeOfData(this.willMessage);
}
if ((this.connectFlags & USERNAME_FLAG) != 0) {
size += mqtt.sizeOfString(this.username);
}
if ((this.connectFlags & PASSWORD_FLAG) != 0) {
size += mqtt.sizeOfData(this.password);
}
return size;
}
@Override
public Encoder mqttEncoder(MqttEncoder mqtt) {
return mqtt.connectEncoder(this);
}
@Override
public Encoder encodeMqtt(OutputBuffer output, MqttEncoder mqtt) {
return mqtt.encodeConnect(this, output);
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
} else if (other instanceof MqttConnect) {
final MqttConnect that = (MqttConnect) other;
return this.packetFlags == that.packetFlags && this.protocolName.equals(that.protocolName)
&& this.protocolLevel == that.protocolLevel && this.connectFlags == that.connectFlags
&& this.keepAlive == that.keepAlive && this.clientId.equals(that.clientId)
&& (this.willTopic == null ? that.willTopic == null : this.willTopic.equals(that.willTopic))
&& (this.willMessage == null ? that.willMessage == null : this.willMessage.equals(that.willMessage))
&& (this.username == null ? that.username == null : this.username.equals(that.username))
&& (this.password == null ? that.password == null : this.password.equals(that.password));
}
return false;
}
@Override
public int hashCode() {
if (hashSeed == 0) {
hashSeed = Murmur3.seed(MqttConnect.class);
}
return Murmur3.mash(Murmur3.mix(Murmur3.mix(Murmur3.mix(Murmur3.mix(Murmur3.mix(
Murmur3.mix(Murmur3.mix(Murmur3.mix(Murmur3.mix(Murmur3.mix(hashSeed,
this.packetFlags), this.protocolName.hashCode()), this.protocolLevel),
this.connectFlags), this.keepAlive), this.clientId.hashCode()),
Murmur3.hash(this.willTopic)), Murmur3.hash(this.willMessage)),
Murmur3.hash(this.username)), Murmur3.hash(this.password)));
}
@Override
public void debug(Output output) {
output = output.write("MqttConnect").write('.').write("from").write('(')
.debug(this.clientId).write(')');
if (this.packetFlags != 0) {
output = output.write('.').write("packetFlags").write('(').debug(this.packetFlags).write(')');
}
if ("MQTT".equals(this.protocolName)) {
output = output.write('.').write("protocolName").write('(').debug(this.protocolName).write(')');
}
if (this.protocolLevel != 4) {
output = output.write('.').write("protocolLevel").write('(').debug(this.protocolLevel).write(')');
}
if (this.keepAlive != 0) {
output = output.write('.').write("keepAlive").write('(').debug(this.keepAlive).write(')');
}
if (cleanSession()) {
output = output.write('.').write("cleanSession").write('(').write("true").write(')');
}
if (this.willTopic != null) {
output = output.write('.').write("willTopic").write('(').debug(this.willTopic).write(')');
}
if (this.willMessage != null) {
output = output.write('.').write("willMessage").write('(').debug(this.willMessage).write(')');
}
if (willQoS().code != 0) {
output = output.write('.').write("willQoS").write('(').debug(willQoS()).write(')');
}
if (willRetain()) {
output = output.write('.').write("willRetain").write('(').write("true").write(')');
}
if (this.username != null) {
output = output.write('.').write("username").write('(').debug(this.username).write(')');
}
if (this.password != null) {
output = output.write('.').write("password").write('(').debug(this.password).write(')');
}
}
@Override
public String toString() {
return Format.debug(this);
}
private static int hashSeed;
static final int CLEAN_SESSION_FLAG = 0x02;
static final int WILL_FLAG = 0x04;
static final int WILL_QOS_MASK = 0x18;
static final int WILL_QOS_SHIFT = 3;
static final int WILL_RETAIN_FLAG = 0x20;
static final int PASSWORD_FLAG = 0x40;
static final int USERNAME_FLAG = 0x80;
public static MqttConnect from(int packetFlags, String protocolName, int protocolLevel,
int connectFlags, int keepAlive, String clientId, String willTopic,
Data willMessage, String username, Data password) {
return new MqttConnect(packetFlags, protocolName, protocolLevel, connectFlags,
keepAlive, clientId, willTopic, willMessage, username, password);
}
public static MqttConnect from(String clientId) {
return new MqttConnect(0, "MQTT", 4, CLEAN_SESSION_FLAG, 0, clientId, null, null, null, null);
}
}
