Java tutorial
/* * Druid - a distributed column store. * Copyright 2012 - 2015 Metamarkets Group 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 io.druid.firehose.rabbitmq; import com.fasterxml.jackson.annotation.JsonCreator; import com.fasterxml.jackson.annotation.JsonIgnore; import com.fasterxml.jackson.annotation.JsonProperty; import com.google.common.collect.Maps; import com.rabbitmq.client.ConnectionFactory; import com.rabbitmq.client.LongString; import java.net.URI; import java.net.URISyntaxException; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import java.util.Map; /** * A Jacksonified version of the RabbitMQ ConnectionFactory for better integration * into the realtime.spec configuration file format. */ public class JacksonifiedConnectionFactory extends ConnectionFactory { public static JacksonifiedConnectionFactory makeDefaultConnectionFactory() throws Exception { return new JacksonifiedConnectionFactory(null, 0, null, null, null, null, 0, 0, 0, 0, null); } private static Map<String, Object> getSerializableClientProperties(final Map<String, Object> clientProperties) { return Maps.transformEntries(clientProperties, new Maps.EntryTransformer<String, Object, Object>() { @Override public Object transformEntry(String key, Object value) { if (value instanceof LongString) { return value.toString(); } return value; } }); } private final String host; private final int port; private final String username; private final String password; private final String virtualHost; private final String uri; private final int requestedChannelMax; private final int requestedFrameMax; private final int requestedHeartbeat; private final int connectionTimeout; private final Map<String, Object> clientProperties; @JsonCreator public JacksonifiedConnectionFactory(@JsonProperty("host") String host, @JsonProperty("port") int port, @JsonProperty("username") String username, @JsonProperty("password") String password, @JsonProperty("virtualHost") String virtualHost, @JsonProperty("uri") String uri, @JsonProperty("requestedChannelMax") int requestedChannelMax, @JsonProperty("requestedFrameMax") int requestedFrameMax, @JsonProperty("requestedHeartbeat") int requestedHeartbeat, @JsonProperty("connectionTimeout") int connectionTimeout, @JsonProperty("clientProperties") Map<String, Object> clientProperties) throws Exception { super(); this.host = host == null ? super.getHost() : host; this.port = port == 0 ? super.getPort() : port; this.username = username == null ? super.getUsername() : username; this.password = password == null ? super.getPassword() : password; this.virtualHost = virtualHost == null ? super.getVirtualHost() : virtualHost; this.uri = uri; this.requestedChannelMax = requestedChannelMax == 0 ? super.getRequestedChannelMax() : requestedChannelMax; this.requestedFrameMax = requestedFrameMax == 0 ? super.getRequestedFrameMax() : requestedFrameMax; this.requestedHeartbeat = requestedHeartbeat == 0 ? super.getRequestedHeartbeat() : requestedHeartbeat; this.connectionTimeout = connectionTimeout == 0 ? super.getConnectionTimeout() : connectionTimeout; this.clientProperties = clientProperties == null ? super.getClientProperties() : clientProperties; super.setHost(this.host); super.setPort(this.port); super.setUsername(this.username); super.setPassword(this.password); super.setVirtualHost(this.virtualHost); if (this.uri != null) { super.setUri(this.uri); } super.setRequestedChannelMax(this.requestedChannelMax); super.setRequestedFrameMax(this.requestedFrameMax); super.setRequestedHeartbeat(this.requestedHeartbeat); super.setConnectionTimeout(this.connectionTimeout); super.setClientProperties(this.clientProperties); } @Override @JsonProperty public String getHost() { return host; } @Override @JsonProperty public int getPort() { return port; } @Override @JsonProperty public String getUsername() { return username; } @Override @JsonProperty public String getPassword() { return password; } @Override @JsonProperty public String getVirtualHost() { return virtualHost; } @JsonProperty public String getUri() { return uri; } // we are only overriding this to help Jackson not be confused about the two setURI methods @JsonIgnore @Override public void setUri(URI uri) throws URISyntaxException, NoSuchAlgorithmException, KeyManagementException { super.setUri(uri); } @Override public void setUri(String uriString) throws URISyntaxException, NoSuchAlgorithmException, KeyManagementException { super.setUri(uriString); } @Override @JsonProperty public int getRequestedChannelMax() { return requestedChannelMax; } @Override @JsonProperty public int getRequestedFrameMax() { return requestedFrameMax; } @Override @JsonProperty public int getRequestedHeartbeat() { return requestedHeartbeat; } @Override @JsonProperty public int getConnectionTimeout() { return connectionTimeout; } @JsonProperty("clientProperties") public Map<String, Object> getSerializableClientProperties() { return getSerializableClientProperties(clientProperties); } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } JacksonifiedConnectionFactory that = (JacksonifiedConnectionFactory) o; if (connectionTimeout != that.connectionTimeout) { return false; } if (port != that.port) { return false; } if (requestedChannelMax != that.requestedChannelMax) { return false; } if (requestedFrameMax != that.requestedFrameMax) { return false; } if (requestedHeartbeat != that.requestedHeartbeat) { return false; } if (clientProperties != null ? !Maps.difference(getSerializableClientProperties(clientProperties), getSerializableClientProperties(that.clientProperties)).areEqual() : that.clientProperties != null) { return false; } if (host != null ? !host.equals(that.host) : that.host != null) { return false; } if (password != null ? !password.equals(that.password) : that.password != null) { return false; } if (uri != null ? !uri.equals(that.uri) : that.uri != null) { return false; } if (username != null ? !username.equals(that.username) : that.username != null) { return false; } if (virtualHost != null ? !virtualHost.equals(that.virtualHost) : that.virtualHost != null) { return false; } return true; } @Override public int hashCode() { int result = host != null ? host.hashCode() : 0; result = 31 * result + port; result = 31 * result + (username != null ? username.hashCode() : 0); result = 31 * result + (password != null ? password.hashCode() : 0); result = 31 * result + (virtualHost != null ? virtualHost.hashCode() : 0); result = 31 * result + (uri != null ? uri.hashCode() : 0); result = 31 * result + requestedChannelMax; result = 31 * result + requestedFrameMax; result = 31 * result + requestedHeartbeat; result = 31 * result + connectionTimeout; result = 31 * result + (clientProperties != null ? clientProperties.hashCode() : 0); return result; } }