Python 的 SOAPpy 库是线程安全的吗？

Question

How thread safe is the SOAPpy library for Python? I'm finding the documentation non-existent and no mention of thread safety (for or against) anywhere.

Specifically, can threads share a SOAPpy.SOAPProxy object, calling different RPCs ? eg,

client = SOAPpy.SOAPProxy(url)
thread1: client.MyFunc()
thread2: client.MyFunc()

Without ill-effects?

Additionally, is the construction of the proxy objects expensive ?

Answer 1

SOAPpy.SOAPProxy doesn't appear to be thread-safe at first glance. In the version 0.12.0 __call method, there is an assignment ( Client.py line 360):

        r, self.namespace = self.transport.call(self.proxy, m, ns, sa,
                                                encoding = self.encoding,
                                             http_proxy = self.http_proxy,
                                                config = self.config)

So if client.MyFunc() is invoked from 2 different threads, they will create separate connections but will both assign a value to the self.namespace attribute.

On the plus side, constructing an instance of SOAPProxy for each thread should be quite efficient. I was able to create 100 instances in ~1ms on a virtual machine, which should be small compared to a SOAP request round-trip time.