Add thread examples

examples/thread_server.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import argparse
+import capnp
+
+import thread_capnp
+
+
+class ExampleImpl(thread_capnp.Example.Server):
+
+    "Implementation of the Example threading Cap'n Proto interface."
+
+    def subscribeStatus(self, subscriber, **kwargs):
+        return capnp.getTimer().after_delay(10**9) \
+            .then(lambda: subscriber.status(True)) \
+            .then(lambda _: self.subscribeStatus(subscriber))
+
+    def longRunning(self, **kwargs):
+        return capnp.getTimer().after_delay(3 * 10**9)
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(usage='''Runs the server bound to the\
+given address/port ADDRESS may be '*' to bind to all local addresses.\
+:PORT may be omitted to choose a port automatically. ''')
+
+    parser.add_argument("address", help="ADDRESS[:PORT]")
+
+    return parser.parse_args()
+
+
+impl = ExampleImpl()
+
+
+def restore(ref):
+    assert ref.as_text() == 'example'
+    return impl
+
+
+def main():
+    address = parse_args().address
+
+    server = capnp.TwoPartyServer(address, restore)
+    server.run_forever()
+
+if __name__ == '__main__':
+    main()