我想将SOA引入一个低延迟系统,但不想有TCP通信的开销(即使在同一台机器上)。由于我同时拥有Java和php进程,Thrift似乎是一个很好的选择。请问是否有适用于Thrift的IPC传输实现,或者在这种情况下是否有其他好的想法?
您可以使用Thrift对对象进行序列化,然后使用IPC方法(如命名管道、消息队列等)。
下面是使用管道的简单示例:
struct Message {
1: i32 uid,
2: string information,
}
thrift --gen java message.thrift
thrift --gen php message.thrift
<?php
$GLOBALS['THRIFT_ROOT'] = 'src';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift.php';
require_once $GLOBALS['THRIFT_ROOT'].'/protocol/TBinarySerializer.php'; // this generates serialized string from our obect
require_once $GLOBALS['THRIFT_ROOT'].'/packages/message/message_types.php'; //from generated thrift sources
//create new message
$message = new Message();
$message->uid = '1';
$message->information = 'Some info';
var_dump($message);
//serialize
$serializer = new TBinarySerializer();
$serialized_message = $serializer->serialize($message);
var_dump($serialized_message);
//write to a pipe
if (pcntl_fork() == 0) {
$namedPipe = '/tmp/pipe';
if (! file_exists($namedPipe)) {
posix_mkfifo($namedPipe, 0600);
}
$fifo = fopen($namedPipe, 'w');
fwrite($fifo, $serialized_message);
exit(0);
}
?>
//read from pipe
FileInputStream fileInputStream = new FileInputStream(new File("/tmp/pipe"));
int availableBytes = fileInputStream.available();
byte[] b = new byte[availableBytes];
fileInputStream.read(b , 0, availableBytes);
//deserialize
TDeserializer tDeserializer = new TDeserializer();
Message deserMessage = new Message();
tDeserializer.deserialize(deserMessage, b);
System.out.println(deserMessage.getInformation());
//prints "Some info"
关于 Thrift C++ 库的跨平台管道传输,请参见此处。这应该很容易移植到其他语言。如果你只需要支持 *NIX,可以使用域套接字(domain sockets),TSocket 已经支持。只需将 (host, port) 替换为 (name) 传递给它的构造函数即可。