Install Pyro
$pip install pyro4
Start Pyro name server
$pyro4-ns
You should get something like this
Not starting broadcast server for localhost.
NS running on localhost:9090 (127.0.0.1)
Warning: HMAC key not set. Anyone can connect to this server!
URI = PYRO:Pyro.NameServer@localhost:9090
Write some Python code to perform remote invocations on using Pyro.
import Pyro4
@Pyro4.expose
class GreetingMaker(object):
def get_fortune(self, name):
return "Hello, {0}. Here is your fortune message:\n" \
"Tomorrow's lucky number is 12345678.".format(name)
daemon = Pyro4.Daemon() # make a Pyro daemon
ns = Pyro4.locateNS() # find the name server
uri = daemon.register(GreetingMaker) # register the greeting maker as a Pyro object
ns.register("example.greeting", uri) # register the object with a name in the name server
print("Ready.")
daemon.requestLoop() # start the event loop of the server to wait for callsExecute the above code
python greeting_server.py
You should get the message
Ready.
Write some Java code to use Pyro. Note that this project contains a Maven pom.xml in order to include Pyro dependencies and build an uber-jar with these dependencies.
import net.razorvine.pyro.*;
public class HelloPython {
public static void main(final String[] args) throws Exception {
final NameServerProxy ns = NameServerProxy.locateNS(null);
final PyroProxy remoteobject = new PyroProxy(ns.lookup("example.greeting"));
final String result = (String) remoteobject.call("get_fortune", "Marek");
System.out.println(result);
}
}Build the Java code
mvn clean package
Test the Java code (after setting up Pyro, starting the name server and the Python server app).
mvn test
This will run the main method. You should see the following on the console
Hello, Marek. Here is your fortune message:
Tomorrow's lucky number is 12345678.
For more information about Pyro, see here. For more information about Pyro in Java, see here.
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