My first Python code fails with dictionaries

Anhur

Hello!

I'm doing some test codes with Python. I've created a slice definition (Ice_bindings.ice):

module fase {
  module bindings {
    module logging {
      dictionary<string, string> Message;
      interface LoggingServer {
        void NewMessage(Message msg);
        void log(Message msg);
      };
    };
  };
};

So, I've created a the server code (Ser.py):

import sys, traceback, Ice

Ice.loadSlice("Ice_bindings.ice")
import fase.bindings.logging

class LoggingServer(fase.bindings.logging.LoggingServer):
    def log(self, msg):
        print msg

status = 0
ic = None

try:
    ic = Ice.initialize(sys.argv)
    adapter = ic.createObjectAdapterWithEndpoints(
        "LoggingServerAdapter", "default -p 10000")
    logger = LoggingServer()
    adapter.add(logger, Ice.stringToIdentity("LoggingServer"))
    adapter.activate()
    ic.waitForShutdown()
except:
    traceback.print_exc()
    status = 1

if ic:
    # Clean up
    try:
        ic.destroy()
    except:
        traceback.print_exc()
        status = 1

sys.exit(status)

and the client (Cli.py):

import sys, traceback, Ice

Ice.loadSlice("Ice_bindings.ice")
import fase.bindings.logging

status = 0
ic = None

try:
    ic = Ice.initialize(sys.argv)
    base = ic.stringToProxy("LoggingServer:tcp default -p 10000")
    logger = fase.bindings.logging.LoggingServerPrx.checkedCast(base)
    if not logger:
        raise RuntimeError("Invalid proxy")
    
    logger.log({"pippo":"pluto"})
    
except:
    traceback.print_exc()
    status = 1

if ic:
    # Clean up
    try:
        ic.destroy()
    except:
        traceback.print_exc()
        status = 1
        
sys.exit(status)

When I run the client I get this error:

Traceback (most recent call last):
  File "Cli.py", line 16, in ?
    logger.log({"pippo":"pluto"})
  File "Ice_bindings.ice", line 50, in log
UnknownException: exception ::Ice::UnknownException
{
    unknown = exceptions.TypeError: log() takes exactly 2 arguments (3 given)
}

and the server says:

Ser.py: warning: dispatch exception: Util.cpp:132: Ice::UnknownException:
unknown exception:
exceptions.TypeError: log() takes exactly 2 arguments (3 given)
identity: LoggingServer
facet:
operation: log

What I'm mistaking?

Thank you in advance.

benoit

Hi,

I believe this is caused by the definition of your "log" servant method. It's missing the "current" parameter. It should be something like the following instead:

class LoggingServer(fase.bindings.logging.LoggingServer):
    def log(self, msg, current=None):
        print msg

See Section 24.5 and 30.6 in the Ice manual for more information on this "current" parameter.

Cheers,
Benoit.

Anhur

OK! That was the problem!

Thank you!