java - Is RabbitMQ's AMQP.BasicProperties.Builder thread-safe? -


title pretty self-explanatory.

is amqp.basicproperties.builder thread-safe? citations/sources?

i can't find indicates either way...

no, amqp.basicproperties.builder not thread-safe. tested using following class:

package com.anarsoft.agent; import java.util.concurrent.atomic.atomicinteger; import com.rabbitmq.client.amqp;  public class testrabbitmq extends thread {  static  final amqp.basicproperties.builder builder = new amqp.basicproperties.builder(); static final atomicinteger threadcount = new atomicinteger();  public  void  run() {       builder.clusterid("444").build();     threadcount.decrementandget();  }  public static void main(string[] args) throws exception {       for( int = 0 ; < 8 ; i++)     {         testrabbitmq testnumberformat = new testrabbitmq();         threadcount.addandget(1);         testnumberformat.start();     }      while(threadcount.get() > 0)     {         thread.sleep(1000);     }    } }

http://vmlens.com shows me fields accessed without synchronization. trace generated http://vmlens.com:

com/rabbitmq/client/amqp$basicproperties$builder.clusterid@28470003 (8,8) thread-0 (9)    thread-1 (10)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run  thread-2 (11)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run  thread-3 (12)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run  thread-4 (13)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run  thread-5 (14)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run  thread-6 (15)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run  thread-7 (16)  com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.rabbitmq.client.amqp$basicproperties$builder.clusterid    com.anarsoft.agent.testrabbitmq.run

you can see source not threadsafe: http://grepcode.com/file/repo1.maven.org/maven2/com.rabbitmq/amqp-client/2.6.1/com/rabbitmq/client/amqp.java#amqp.basicproperties.builder

public builder   clusterid(string clusterid)   {   this.clusterid = clusterid; return this; }

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