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-rw-r--r--src/leap/common/events/README.rst12
-rw-r--r--src/leap/common/events/__init__.py109
-rw-r--r--src/leap/common/events/client.py (renamed from src/leap/common/events/component.py)114
-rw-r--r--src/leap/common/events/daemon.py2
-rw-r--r--src/leap/common/events/events.proto36
-rw-r--r--src/leap/common/events/events_pb2.py93
-rw-r--r--src/leap/common/events/server.py117
-rw-r--r--src/leap/common/tests/test_events.py301
8 files changed, 617 insertions, 167 deletions
diff --git a/src/leap/common/events/README.rst b/src/leap/common/events/README.rst
index 813be8b..2e7f254 100644
--- a/src/leap/common/events/README.rst
+++ b/src/leap/common/events/README.rst
@@ -1,19 +1,19 @@
Events mechanism
================
-The events mechanism allows for "components" to send signal events to each
-other by means of a centralized server. Components can register with the
+The events mechanism allows for clients to send signal events to each
+other by means of a centralized server. Clients can register with the
server to receive signals of certain types, and they can also send signals to
-the server that will then redistribute these signals to registered components.
+the server that will then redistribute these signals to registered clients.
Listening daemons
-----------------
-Both components and the server listen for incoming messages by using a
+Both clients and the server listen for incoming messages by using a
listening daemon that runs in its own thread. The server daemon has to be
-started explicitly, while components daemon will be started whenever a
-component registers with the server to receive messages.
+started explicitly, while clients daemon will be started whenever a
+client registers with the server to receive messages.
How to use it
diff --git a/src/leap/common/events/__init__.py b/src/leap/common/events/__init__.py
index 12416e4..a6fe7c3 100644
--- a/src/leap/common/events/__init__.py
+++ b/src/leap/common/events/__init__.py
@@ -16,7 +16,58 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
-An events mechanism that allows for signaling of events between components.
+This is an events mechanism that uses a server to allow for signaling of
+events between clients.
+
+Application components should use the interface available in this file to
+register callbacks to be executed upon receiving specific signals, and to send
+signals to other components.
+
+To register a callback to be executed when a specific event is signaled, use
+leap.common.events.register():
+
+>>> from leap.common.events import register
+>>> from leap.common.events.proto import CLIENT_UID
+>>> register(CLIENT_UID, lambda req: do_something(req))
+
+To signal an event, use leap.common.events.signal():
+
+>>> from leap.common.events import signal
+>>> from leap.common.events.proto import CLIENT_UID
+>>> signal(CLIENT_UID)
+
+
+NOTE ABOUT SYNC/ASYNC REQUESTS:
+
+Clients always communicate with the server, and never between themselves.
+When a client registers a callback for an event, the callback is saved locally
+in the client and the server stores the client socket port in a list
+associated with that event. When a client signals an event, the server
+forwards the signal to all registered client ports, and then each client
+executes its callbacks associated with that event locally.
+
+Each RPC call from a client to the server is followed by a response from the
+server to the client. Calls to register() and signal() (and all other RPC
+calls) can be synchronous or asynchronous meaning if they will or not wait for
+the server's response before returning.
+
+This mechanism was built on top of protobuf.socketrpc, and because of this RPC
+calls are made synchronous or asynchronous in the following way:
+
+ * If RPC calls receive a parameter called `reqcbk`, then the call is made
+ asynchronous. That means that:
+
+ - an eventual `timeout` parameter is not used,
+ - the call returns immediatelly with value None, and
+ - the `reqcbk` callback is executed asynchronously upon the arrival of
+ a response from the server.
+
+ * Otherwise, if the `reqcbk` parameter is None, then the call is made in a
+ synchronous manner:
+
+ - if a response from server arrives within `timeout` milliseconds, the
+ RPC call returns it;
+ - otherwise, the call returns None.
"""
import logging
@@ -26,7 +77,7 @@ import socket
from leap.common.events import (
events_pb2 as proto,
server,
- component,
+ client,
daemon,
)
@@ -54,9 +105,8 @@ def register(signal, callback, uid=None, replace=False, reqcbk=None,
:param replace: should an existent callback with same uid be replaced?
:type replace: bool
:param reqcbk: a callback to be called when a response from server is
- received
- :type reqcbk: function
- callback(leap.common.events.events_pb2.EventResponse)
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
:param timeout: the timeout for synch calls
:type timeout: int
@@ -64,7 +114,7 @@ def register(signal, callback, uid=None, replace=False, reqcbk=None,
calls.
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
- return component.register(signal, callback, uid, replace, reqcbk, timeout)
+ return client.register(signal, callback, uid, replace, reqcbk, timeout)
def unregister(signal, uid=None, reqcbk=None, timeout=1000):
@@ -79,17 +129,16 @@ def unregister(signal, uid=None, reqcbk=None, timeout=1000):
:param uid: a unique id for the callback
:type uid: int
:param reqcbk: a callback to be called when a response from server is
- received
- :type reqcbk: function
- callback(leap.common.events.events_pb2.EventResponse)
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
:param timeout: the timeout for synch calls
:type timeout: int
:return: the response from server for synch calls or nothing for asynch
- calls.
+ calls.
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
- return component.unregister(signal, uid, reqcbk, timeout)
+ return client.unregister(signal, uid, reqcbk, timeout)
def signal(signal, content="", mac_method="", mac="", reqcbk=None,
@@ -112,14 +161,42 @@ def signal(signal, content="", mac_method="", mac="", reqcbk=None,
:param mac: the content of the auth mac
:type mac: str
:param reqcbk: a callback to be called when a response from server is
- received
- :type reqcbk: function
- callback(leap.common.events.events_pb2.EventResponse)
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
:param timeout: the timeout for synch calls
:type timeout: int
:return: the response from server for synch calls or nothing for asynch
- calls.
+ calls.
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
- return component.signal(signal, content, mac_method, mac, reqcbk, timeout)
+ return client.signal(signal, content, mac_method, mac, reqcbk, timeout)
+
+def ping_client(port, reqcbk=None, timeout=1000):
+ """
+ Ping a client running in C{port}.
+
+ :param port: the port in which the client should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from client is
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+ """
+ return client.ping(port, reqcbk=reqcbk, timeout=timeout)
+
+
+def ping_server(port=server.SERVER_PORT, reqcbk=None, timeout=1000):
+ """
+ Ping the server.
+
+ :param port: the port in which server should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from server is
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+ """
+ return server.ping(port, reqcbk=reqcbk, timeout=timeout)
diff --git a/src/leap/common/events/component.py b/src/leap/common/events/client.py
index 029d1ac..55f14ab 100644
--- a/src/leap/common/events/component.py
+++ b/src/leap/common/events/client.py
@@ -1,5 +1,5 @@
# -*- coding: utf-8 -*-
-# component.py
+# client.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
@@ -16,15 +16,15 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
-The component end point of the events mechanism.
+The client end point of the events mechanism.
-Components are the communicating parties of the events mechanism. They
+Clients are the communicating parties of the events mechanism. They
communicate by sending messages to a server, which in turn redistributes
-messages to other components.
+messages to other clients.
-When a component registers a callback for a given signal, it also tells the
+When a client registers a callback for a given signal, it also tells the
server that it wants to be notified whenever signals of that type are sent by
-some other component.
+some other client.
"""
@@ -59,23 +59,23 @@ class CallbackAlreadyRegistered(Exception):
pass
-def ensure_component_daemon():
+def ensure_client_daemon():
"""
- Ensure the component daemon is running and listening for incoming
+ Ensure the client daemon is running and listening for incoming
messages.
:return: the daemon instance
- :rtype: EventsComponentDaemon
+ :rtype: EventsClientDaemon
"""
import time
- daemon = EventsComponentDaemon.ensure(0)
- logger.debug('ensure component daemon')
+ daemon = EventsClientDaemon.ensure(0)
+ logger.debug('ensure client daemon')
# Because we use a random port we want to wait until a port is assigned to
- # local component daemon.
+ # local client daemon.
- while not (EventsComponentDaemon.get_instance() and
- EventsComponentDaemon.get_instance().get_port()):
+ while not (EventsClientDaemon.get_instance() and
+ EventsClientDaemon.get_instance().get_port()):
time.sleep(0.1)
return daemon
@@ -95,16 +95,14 @@ def register(signal, callback, uid=None, replace=False, reqcbk=None,
:param signal: the signal that causes the callback to be launched
:type signal: int (see the `events.proto` file)
:param callback: the callback to be called when the signal is received
- :type callback: function
- callback(leap.common.events.events_pb2.SignalRequest)
+ :type callback: function(leap.common.events.events_pb2.SignalRequest)
:param uid: a unique id for the callback
:type uid: int
:param replace: should an existent callback with same uid be replaced?
:type replace: bool
:param reqcbk: a callback to be called when a response from server is
- received
- :type reqcbk: function
- callback(leap.common.events.events_pb2.EventResponse)
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
:param timeout: the timeout for synch calls
:type timeout: int
@@ -112,10 +110,10 @@ def register(signal, callback, uid=None, replace=False, reqcbk=None,
callback identified by the given uid and replace is False.
:return: the response from server for synch calls or nothing for asynch
- calls.
+ calls.
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
- ensure_component_daemon() # so we can receive registered signals
+ ensure_client_daemon() # so we can receive registered signals
# register callback locally
if signal not in registered_callbacks:
registered_callbacks[signal] = []
@@ -130,7 +128,7 @@ def register(signal, callback, uid=None, replace=False, reqcbk=None,
# register callback on server
request = proto.RegisterRequest()
request.event = signal
- request.port = EventsComponentDaemon.get_instance().get_port()
+ request.port = EventsClientDaemon.get_instance().get_port()
request.mac_method = mac_auth.MacMethod.MAC_NONE
request.mac = ""
service = RpcService(proto.EventsServerService_Stub,
@@ -153,14 +151,14 @@ def unregister(signal, uid=None, reqcbk=None, timeout=1000):
:param uid: a unique id for the callback
:type uid: int
:param reqcbk: a callback to be called when a response from server is
- received
- :type reqcbk: function
- callback(leap.common.events.events_pb2.EventResponse)
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
:param timeout: the timeout for synch calls
:type timeout: int
:return: the response from server for synch calls or nothing for asynch
- calls or None if no callback is registered for that signal or uid.
+ calls or None if no callback is registered for that signal or
+ uid.
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
if signal not in registered_callbacks or not registered_callbacks[signal]:
@@ -180,7 +178,7 @@ def unregister(signal, uid=None, reqcbk=None, timeout=1000):
if not registered_callbacks[signal]:
request = proto.UnregisterRequest()
request.event = signal
- request.port = EventsComponentDaemon.get_instance().get_port()
+ request.port = EventsClientDaemon.get_instance().get_port()
request.mac_method = mac_auth.MacMethod.MAC_NONE
request.mac = ""
service = RpcService(proto.EventsServerService_Stub,
@@ -212,14 +210,13 @@ def signal(signal, content="", mac_method="", mac="", reqcbk=None,
:param mac: the content of the auth mac
:type mac: str
:param reqcbk: a callback to be called when a response from server is
- received
- :type reqcbk: function
- callback(leap.common.events.events_pb2.EventResponse)
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
:param timeout: the timeout for synch calls
:type timeout: int
:return: the response from server for synch calls or nothing for asynch
- calls.
+ calls.
:rtype: leap.common.events.events_pb2.EventsResponse or None
"""
request = proto.SignalRequest()
@@ -233,13 +230,38 @@ def signal(signal, content="", mac_method="", mac="", reqcbk=None,
return service.signal(request, callback=reqcbk, timeout=timeout)
-class EventsComponentService(proto.EventsComponentService):
+def ping(port, reqcbk=None, timeout=1000):
"""
- Service for receiving signal events in components.
+ Ping a client running in C{port}.
+
+ :param port: the port in which the client should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from client is
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+
+ :return: the response from client for synch calls or nothing for asynch
+ calls.
+ :rtype: leap.common.events.events_pb2.EventsResponse or None
+ """
+ request = proto.PingRequest()
+ service = RpcService(
+ proto.EventsClientService_Stub,
+ port,
+ 'localhost')
+ logger.info("Pinging a client in port %d..." % port)
+ return service.ping(request, callback=reqcbk, timeout=timeout)
+
+
+class EventsClientService(proto.EventsClientService):
+ """
+ Service for receiving signal events in clients.
"""
def __init__(self):
- proto.EventsComponentService.__init__(self)
+ proto.EventsClientService.__init__(self)
def signal(self, controller, request, done):
"""
@@ -250,7 +272,7 @@ class EventsComponentService(proto.EventsComponentService):
:param controller: used to mediate a single method call
:type controller: protobuf.socketrpc.controller.SocketRpcController
- :param request: the request received from the component
+ :param request: the request received from the client
:type request: leap.common.events.events_pb2.SignalRequest
:param done: callback to be called when done
:type done: protobuf.socketrpc.server.Callback
@@ -270,8 +292,24 @@ class EventsComponentService(proto.EventsComponentService):
response.status = proto.EventResponse.OK
done.run(response)
+ def ping(self, controller, request, done):
+ """
+ Reply to a ping request.
+
+ :param controller: used to mediate a single method call
+ :type controller: protobuf.socketrpc.controller.SocketRpcController
+ :param request: the request received from the client
+ :type request: leap.common.events.events_pb2.RegisterRequest
+ :param done: callback to be called when done
+ :type done: protobuf.socketrpc.server.Callback
+ """
+ logger.info("Received ping request, sending response.")
+ response = proto.EventResponse()
+ response.status = proto.EventResponse.OK
+ done.run(response)
+
-class EventsComponentDaemon(daemon.EventsSingletonDaemon):
+class EventsClientDaemon(daemon.EventsSingletonDaemon):
"""
A daemon that listens for incoming events from server.
"""
@@ -285,6 +323,6 @@ class EventsComponentDaemon(daemon.EventsSingletonDaemon):
:type port: int
:return: a daemon instance
- :rtype: EventsComponentDaemon
+ :rtype: EventsClientDaemon
"""
- return cls.ensure_service(port, EventsComponentService())
+ return cls.ensure_service(port, EventsClientService())
diff --git a/src/leap/common/events/daemon.py b/src/leap/common/events/daemon.py
index c253948..c4a4189 100644
--- a/src/leap/common/events/daemon.py
+++ b/src/leap/common/events/daemon.py
@@ -43,7 +43,7 @@ class ServiceAlreadyRunningException(Exception):
class EventsRpcServer(SocketRpcServer):
"""
- RPC server used in server and component interfaces to receive messages.
+ RPC server used in server and client interfaces to receive messages.
"""
def __init__(self, port, host='localhost'):
diff --git a/src/leap/common/events/events.proto b/src/leap/common/events/events.proto
index a813ed1..b844f42 100644
--- a/src/leap/common/events/events.proto
+++ b/src/leap/common/events/events.proto
@@ -17,6 +17,9 @@
package leap.common.events;
option py_generic_services = true;
+
+// These are the events that can be signaled using the events mechanism.
+
enum Event {
CLIENT_SESSION_ID = 1;
CLIENT_UID = 2;
@@ -33,6 +36,10 @@ enum Event {
RAISE_WINDOW = 13;
}
+
+// A SignalRequest is the type of the message sent from one component to request
+// that a signal be sent to every registered component.
+
message SignalRequest {
required Event event = 1;
required string content = 2;
@@ -42,6 +49,10 @@ message SignalRequest {
optional bool error_occurred = 6;
}
+
+// A RegisterRequest message tells the server that a component wants to
+// be signaled whenever a specific event occurs.
+
message RegisterRequest {
required Event event = 1;
required int32 port = 2;
@@ -49,6 +60,10 @@ message RegisterRequest {
required bytes mac = 4;
}
+
+// An UnregisterRequest message tells the server that a component does not
+// want to be signaled when a specific event occurs.
+
message UnregisterRequest {
required Event event = 1;
required int32 port = 2;
@@ -56,6 +71,17 @@ message UnregisterRequest {
required bytes mac = 4;
}
+
+// A PingRequest message is used to find out if a server or component is
+// alive.
+
+message PingRequest {
+}
+
+
+// The EventResponse is the message sent back by server and components after
+// they receive other kinds of requests.
+
message EventResponse {
enum Status {
@@ -68,12 +94,20 @@ message EventResponse {
optional string result = 2;
}
+
+// The EventsServerService is the service provided by the server.
+
service EventsServerService {
+ rpc ping(PingRequest) returns (EventResponse);
rpc register(RegisterRequest) returns (EventResponse);
rpc unregister(UnregisterRequest) returns (EventResponse);
rpc signal(SignalRequest) returns (EventResponse);
}
-service EventsComponentService {
+
+// EventsComponentService is the service provided by components (clients).
+
+service EventsClientService {
+ rpc ping(PingRequest) returns (EventResponse);
rpc signal(SignalRequest) returns (EventResponse);
}
diff --git a/src/leap/common/events/events_pb2.py b/src/leap/common/events/events_pb2.py
index 5b1c118..274514c 100644
--- a/src/leap/common/events/events_pb2.py
+++ b/src/leap/common/events/events_pb2.py
@@ -14,7 +14,7 @@ from google.protobuf import descriptor_pb2
DESCRIPTOR = _descriptor.FileDescriptor(
name='events.proto',
package='leap.common.events',
- serialized_pb='\n\x0c\x65vents.proto\x12\x12leap.common.events\"\x97\x01\n\rSignalRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0f\n\x07\x63ontent\x18\x02 \x02(\t\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\x12\x12\n\nenc_method\x18\x05 \x01(\t\x12\x16\n\x0e\x65rror_occurred\x18\x06 \x01(\x08\"j\n\x0fRegisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"l\n\x11UnregisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"\x82\x01\n\rEventResponse\x12\x38\n\x06status\x18\x01 \x02(\x0e\x32(.leap.common.events.EventResponse.Status\x12\x0e\n\x06result\x18\x02 \x01(\t\"\'\n\x06Status\x12\x06\n\x02OK\x10\x01\x12\n\n\x06UNAUTH\x10\x02\x12\t\n\x05\x45RROR\x10\x03*\xe7\x02\n\x05\x45vent\x12\x15\n\x11\x43LIENT_SESSION_ID\x10\x01\x12\x0e\n\nCLIENT_UID\x10\x02\x12\x19\n\x15SOLEDAD_CREATING_KEYS\x10\x03\x12\x1e\n\x1aSOLEDAD_DONE_CREATING_KEYS\x10\x04\x12\x1a\n\x16SOLEDAD_UPLOADING_KEYS\x10\x05\x12\x1f\n\x1bSOLEDAD_DONE_UPLOADING_KEYS\x10\x06\x12\x1c\n\x18SOLEDAD_DOWNLOADING_KEYS\x10\x07\x12!\n\x1dSOLEDAD_DONE_DOWNLOADING_KEYS\x10\x08\x12\x1c\n\x18SOLEDAD_NEW_DATA_TO_SYNC\x10\t\x12\x1a\n\x16SOLEDAD_DONE_DATA_SYNC\x10\n\x12\x17\n\x13UPDATER_NEW_UPDATES\x10\x0b\x12\x19\n\x15UPDATER_DONE_UPDATING\x10\x0c\x12\x10\n\x0cRAISE_WINDOW\x10\r2\x91\x02\n\x13\x45ventsServerService\x12R\n\x08register\x12#.leap.common.events.RegisterRequest\x1a!.leap.common.events.EventResponse\x12V\n\nunregister\x12%.leap.common.events.UnregisterRequest\x1a!.leap.common.events.EventResponse\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponse2h\n\x16\x45ventsComponentService\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponseB\x03\x90\x01\x01')
+ serialized_pb='\n\x0c\x65vents.proto\x12\x12leap.common.events\"\x97\x01\n\rSignalRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0f\n\x07\x63ontent\x18\x02 \x02(\t\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\x12\x12\n\nenc_method\x18\x05 \x01(\t\x12\x16\n\x0e\x65rror_occurred\x18\x06 \x01(\x08\"j\n\x0fRegisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"l\n\x11UnregisterRequest\x12(\n\x05\x65vent\x18\x01 \x02(\x0e\x32\x19.leap.common.events.Event\x12\x0c\n\x04port\x18\x02 \x02(\x05\x12\x12\n\nmac_method\x18\x03 \x02(\t\x12\x0b\n\x03mac\x18\x04 \x02(\x0c\"\r\n\x0bPingRequest\"\x82\x01\n\rEventResponse\x12\x38\n\x06status\x18\x01 \x02(\x0e\x32(.leap.common.events.EventResponse.Status\x12\x0e\n\x06result\x18\x02 \x01(\t\"\'\n\x06Status\x12\x06\n\x02OK\x10\x01\x12\n\n\x06UNAUTH\x10\x02\x12\t\n\x05\x45RROR\x10\x03*\xe7\x02\n\x05\x45vent\x12\x15\n\x11\x43LIENT_SESSION_ID\x10\x01\x12\x0e\n\nCLIENT_UID\x10\x02\x12\x19\n\x15SOLEDAD_CREATING_KEYS\x10\x03\x12\x1e\n\x1aSOLEDAD_DONE_CREATING_KEYS\x10\x04\x12\x1a\n\x16SOLEDAD_UPLOADING_KEYS\x10\x05\x12\x1f\n\x1bSOLEDAD_DONE_UPLOADING_KEYS\x10\x06\x12\x1c\n\x18SOLEDAD_DOWNLOADING_KEYS\x10\x07\x12!\n\x1dSOLEDAD_DONE_DOWNLOADING_KEYS\x10\x08\x12\x1c\n\x18SOLEDAD_NEW_DATA_TO_SYNC\x10\t\x12\x1a\n\x16SOLEDAD_DONE_DATA_SYNC\x10\n\x12\x17\n\x13UPDATER_NEW_UPDATES\x10\x0b\x12\x19\n\x15UPDATER_DONE_UPDATING\x10\x0c\x12\x10\n\x0cRAISE_WINDOW\x10\r2\xdd\x02\n\x13\x45ventsServerService\x12J\n\x04ping\x12\x1f.leap.common.events.PingRequest\x1a!.leap.common.events.EventResponse\x12R\n\x08register\x12#.leap.common.events.RegisterRequest\x1a!.leap.common.events.EventResponse\x12V\n\nunregister\x12%.leap.common.events.UnregisterRequest\x1a!.leap.common.events.EventResponse\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponse2\xb1\x01\n\x13\x45ventsClientService\x12J\n\x04ping\x12\x1f.leap.common.events.PingRequest\x1a!.leap.common.events.EventResponse\x12N\n\x06signal\x12!.leap.common.events.SignalRequest\x1a!.leap.common.events.EventResponseB\x03\x90\x01\x01')
_EVENT = _descriptor.EnumDescriptor(
name='Event',
@@ -77,8 +77,8 @@ _EVENT = _descriptor.EnumDescriptor(
],
containing_type=None,
options=None,
- serialized_start=542,
- serialized_end=901,
+ serialized_start=557,
+ serialized_end=916,
)
Event = enum_type_wrapper.EnumTypeWrapper(_EVENT)
@@ -118,8 +118,8 @@ _EVENTRESPONSE_STATUS = _descriptor.EnumDescriptor(
],
containing_type=None,
options=None,
- serialized_start=500,
- serialized_end=539,
+ serialized_start=515,
+ serialized_end=554,
)
@@ -284,6 +284,27 @@ _UNREGISTERREQUEST = _descriptor.Descriptor(
)
+_PINGREQUEST = _descriptor.Descriptor(
+ name='PingRequest',
+ full_name='leap.common.events.PingRequest',
+ filename=None,
+ file=DESCRIPTOR,
+ containing_type=None,
+ fields=[
+ ],
+ extensions=[
+ ],
+ nested_types=[],
+ enum_types=[
+ ],
+ options=None,
+ is_extendable=False,
+ extension_ranges=[],
+ serialized_start=408,
+ serialized_end=421,
+)
+
+
_EVENTRESPONSE = _descriptor.Descriptor(
name='EventResponse',
full_name='leap.common.events.EventResponse',
@@ -315,8 +336,8 @@ _EVENTRESPONSE = _descriptor.Descriptor(
options=None,
is_extendable=False,
extension_ranges=[],
- serialized_start=409,
- serialized_end=539,
+ serialized_start=424,
+ serialized_end=554,
)
_SIGNALREQUEST.fields_by_name['event'].enum_type = _EVENT
@@ -327,6 +348,7 @@ _EVENTRESPONSE_STATUS.containing_type = _EVENTRESPONSE
DESCRIPTOR.message_types_by_name['SignalRequest'] = _SIGNALREQUEST
DESCRIPTOR.message_types_by_name['RegisterRequest'] = _REGISTERREQUEST
DESCRIPTOR.message_types_by_name['UnregisterRequest'] = _UNREGISTERREQUEST
+DESCRIPTOR.message_types_by_name['PingRequest'] = _PINGREQUEST
DESCRIPTOR.message_types_by_name['EventResponse'] = _EVENTRESPONSE
@@ -351,6 +373,13 @@ class UnregisterRequest(_message.Message):
# @@protoc_insertion_point(class_scope:leap.common.events.UnregisterRequest)
+class PingRequest(_message.Message):
+ __metaclass__ = _reflection.GeneratedProtocolMessageType
+ DESCRIPTOR = _PINGREQUEST
+
+ # @@protoc_insertion_point(class_scope:leap.common.events.PingRequest)
+
+
class EventResponse(_message.Message):
__metaclass__ = _reflection.GeneratedProtocolMessageType
DESCRIPTOR = _EVENTRESPONSE
@@ -368,13 +397,22 @@ _EVENTSSERVERSERVICE = _descriptor.ServiceDescriptor(
file=DESCRIPTOR,
index=0,
options=None,
- serialized_start=904,
- serialized_end=1177,
+ serialized_start=919,
+ serialized_end=1268,
methods=[
_descriptor.MethodDescriptor(
+ name='ping',
+ full_name='leap.common.events.EventsServerService.ping',
+ index=0,
+ containing_service=None,
+ input_type=_PINGREQUEST,
+ output_type=_EVENTRESPONSE,
+ options=None,
+ ),
+ _descriptor.MethodDescriptor(
name='register',
full_name='leap.common.events.EventsServerService.register',
- index=0,
+ index=1,
containing_service=None,
input_type=_REGISTERREQUEST,
output_type=_EVENTRESPONSE,
@@ -383,7 +421,7 @@ _EVENTSSERVERSERVICE = _descriptor.ServiceDescriptor(
_descriptor.MethodDescriptor(
name='unregister',
full_name='leap.common.events.EventsServerService.unregister',
- index=1,
+ index=2,
containing_service=None,
input_type=_UNREGISTERREQUEST,
output_type=_EVENTRESPONSE,
@@ -392,7 +430,7 @@ _EVENTSSERVERSERVICE = _descriptor.ServiceDescriptor(
_descriptor.MethodDescriptor(
name='signal',
full_name='leap.common.events.EventsServerService.signal',
- index=2,
+ index=3,
containing_service=None,
input_type=_SIGNALREQUEST,
output_type=_EVENTRESPONSE,
@@ -411,20 +449,29 @@ class EventsServerService_Stub(EventsServerService):
DESCRIPTOR = _EVENTSSERVERSERVICE
-_EVENTSCOMPONENTSERVICE = _descriptor.ServiceDescriptor(
- name='EventsComponentService',
- full_name='leap.common.events.EventsComponentService',
+_EVENTSCLIENTSERVICE = _descriptor.ServiceDescriptor(
+ name='EventsClientService',
+ full_name='leap.common.events.EventsClientService',
file=DESCRIPTOR,
index=1,
options=None,
- serialized_start=1179,
- serialized_end=1283,
+ serialized_start=1271,
+ serialized_end=1448,
methods=[
_descriptor.MethodDescriptor(
- name='signal',
- full_name='leap.common.events.EventsComponentService.signal',
+ name='ping',
+ full_name='leap.common.events.EventsClientService.ping',
index=0,
containing_service=None,
+ input_type=_PINGREQUEST,
+ output_type=_EVENTRESPONSE,
+ options=None,
+ ),
+ _descriptor.MethodDescriptor(
+ name='signal',
+ full_name='leap.common.events.EventsClientService.signal',
+ index=1,
+ containing_service=None,
input_type=_SIGNALREQUEST,
output_type=_EVENTRESPONSE,
options=None,
@@ -432,13 +479,13 @@ _EVENTSCOMPONENTSERVICE = _descriptor.ServiceDescriptor(
])
-class EventsComponentService(_service.Service):
+class EventsClientService(_service.Service):
__metaclass__ = service_reflection.GeneratedServiceType
- DESCRIPTOR = _EVENTSCOMPONENTSERVICE
+ DESCRIPTOR = _EVENTSCLIENTSERVICE
-class EventsComponentService_Stub(EventsComponentService):
+class EventsClientService_Stub(EventsClientService):
__metaclass__ = service_reflection.GeneratedServiceStubType
- DESCRIPTOR = _EVENTSCOMPONENTSERVICE
+ DESCRIPTOR = _EVENTSCLIENTSERVICE
# @@protoc_insertion_point(module_scope)
diff --git a/src/leap/common/events/server.py b/src/leap/common/events/server.py
index d53c218..a7d4da9 100644
--- a/src/leap/common/events/server.py
+++ b/src/leap/common/events/server.py
@@ -17,12 +17,12 @@
"""
A server for the events mechanism.
-A server can receive different kinds of requests from components:
+A server can receive different kinds of requests from clients:
- 1. Registration request: store component port number to be notified when
+ 1. Registration request: store client port number to be notified when
a specific signal arrives.
- 2. Signal request: redistribute the signal to registered components.
+ 2. Signal request: redistribute the signal to registered clients.
"""
import logging
import socket
@@ -40,12 +40,19 @@ logger = logging.getLogger(__name__)
SERVER_PORT = 8090
-# the `registered_components` dictionary below should have the following
+# the `registered_clients` dictionary below should have the following
# format:
#
# { event_signal: [ port, ... ], ... }
#
-registered_components = {}
+registered_clients = {}
+
+
+class PortAlreadyTaken(Exception):
+ """
+ Raised when trying to open a server in a port that is already taken.
+ """
+ pass
def ensure_server(port=SERVER_PORT):
@@ -60,40 +67,76 @@ def ensure_server(port=SERVER_PORT):
:return: the daemon instance or nothing
:rtype: EventsServerDaemon or None
+
+ :raise PortAlreadyTaken: Raised if C{port} is already taken by something
+ that is not an events server.
"""
try:
+ # check if port is available
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('localhost', port))
s.close()
- logger.info('Server is already running on port %d.', port)
- return None
+ # port is taken, check if there's a server running there
+ response = ping(port)
+ if response is not None and response.status == proto.EventResponse.OK:
+ logger.info('A server is already running on port %d.', port)
+ return None
+ # port is taken, and not by an events server
+ logger.info('Port %d is taken by something not an events server.', port)
+ raise PortAlreadyTaken(port)
except socket.error:
+ # port is available, run a server
logger.info('Launching server on port %d.', port)
return EventsServerDaemon.ensure(port)
+def ping(port=SERVER_PORT, reqcbk=None, timeout=1000):
+ """
+ Ping the server.
+
+ :param port: the port in which server should be listening
+ :type port: int
+ :param reqcbk: a callback to be called when a response from server is
+ received
+ :type reqcbk: function(leap.common.events.events_pb2.EventResponse)
+ :param timeout: the timeout for synch calls
+ :type timeout: int
+
+ :return: the response from server for synch calls or nothing for asynch
+ calls.
+ :rtype: leap.common.events.events_pb2.EventsResponse or None
+ """
+ request = proto.PingRequest()
+ service = RpcService(
+ proto.EventsServerService_Stub,
+ port,
+ 'localhost')
+ logger.info("Pinging server in port %d..." % port)
+ return service.ping(request, callback=reqcbk, timeout=timeout)
+
+
class EventsServerService(proto.EventsServerService):
"""
- Service for receiving events in components.
+ Service for receiving events in clients.
"""
def register(self, controller, request, done):
"""
- Register a component port to be signaled when specific events come in.
+ Register a client port to be signaled when specific events come in.
:param controller: used to mediate a single method call
:type controller: protobuf.socketrpc.controller.SocketRpcController
- :param request: the request received from the component
+ :param request: the request received from the client
:type request: leap.common.events.events_pb2.RegisterRequest
:param done: callback to be called when done
:type done: protobuf.socketrpc.server.Callback
"""
logger.info("Received registration request: %s..." % str(request)[:40])
- # add component port to signal list
- if request.event not in registered_components:
- registered_components[request.event] = set([])
- registered_components[request.event].add(request.port)
- # send response back to component
+ # add client port to signal list
+ if request.event not in registered_clients:
+ registered_clients[request.event] = set([])
+ registered_clients[request.event].add(request.port)
+ # send response back to client
logger.debug('sending response back')
response = proto.EventResponse()
@@ -102,56 +145,72 @@ class EventsServerService(proto.EventsServerService):
def unregister(self, controller, request, done):
"""
- Unregister a component port so it will not be signaled when specific
+ Unregister a client port so it will not be signaled when specific
events come in.
:param controller: used to mediate a single method call
:type controller: protobuf.socketrpc.controller.SocketRpcController
- :param request: the request received from the component
+ :param request: the request received from the client
:type request: leap.common.events.events_pb2.RegisterRequest
:param done: callback to be called when done
:type done: protobuf.socketrpc.server.Callback
"""
logger.info(
"Received unregistration request: %s..." % str(request)[:40])
- # remove component port from signal list
+ # remove client port from signal list
response = proto.EventResponse()
- if request.event in registered_components:
+ if request.event in registered_clients:
try:
- registered_components[request.event].remove(request.port)
+ registered_clients[request.event].remove(request.port)
response.status = proto.EventResponse.OK
except KeyError:
response.status = proto.EventsResponse.ERROR
response.result = 'Port %d not registered.' % request.port
- # send response back to component
+ # send response back to client
logger.debug('sending response back')
done.run(response)
def signal(self, controller, request, done):
"""
- Perform an RPC call to signal all components registered to receive a
+ Perform an RPC call to signal all clients registered to receive a
specific signal.
:param controller: used to mediate a single method call
:type controller: protobuf.socketrpc.controller.SocketRpcController
- :param request: the request received from the component
+ :param request: the request received from the client
:type request: leap.common.events.events_pb2.SignalRequest
:param done: callback to be called when done
:type done: protobuf.socketrpc.server.Callback
"""
- logger.info('Received signal from component: %s...', str(request)[:40])
- # send signal to all registered components
+ logger.info('Received signal from client: %s...', str(request)[:40])
+ # send signal to all registered clients
# TODO: verify signal auth
- if request.event in registered_components:
- for port in registered_components[request.event]:
+ if request.event in registered_clients:
+ for port in registered_clients[request.event]:
def callback(req, resp):
logger.info("Signal received by " + str(port))
- service = RpcService(proto.EventsComponentService_Stub,
+ service = RpcService(proto.EventsClientService_Stub,
port, 'localhost')
service.signal(request, callback=callback)
- # send response back to component
+ # send response back to client
+ response = proto.EventResponse()
+ response.status = proto.EventResponse.OK
+ done.run(response)
+
+ def ping(self, controller, request, done):
+ """
+ Reply to a ping request.
+
+ :param controller: used to mediate a single method call
+ :type controller: protobuf.socketrpc.controller.SocketRpcController
+ :param request: the request received from the client
+ :type request: leap.common.events.events_pb2.RegisterRequest
+ :param done: callback to be called when done
+ :type done: protobuf.socketrpc.server.Callback
+ """
+ logger.info("Received ping request, sending response.")
response = proto.EventResponse()
response.status = proto.EventResponse.OK
done.run(response)
diff --git a/src/leap/common/tests/test_events.py b/src/leap/common/tests/test_events.py
index 7286bdc..bc04dd6 100644
--- a/src/leap/common/tests/test_events.py
+++ b/src/leap/common/tests/test_events.py
@@ -18,19 +18,27 @@
import unittest
import sets
import time
+import socket
+import threading
+import random
+
+
+from mock import Mock
from protobuf.socketrpc import RpcService
from leap.common import events
from leap.common.events import (
server,
- component,
+ client,
mac_auth,
)
from leap.common.events.events_pb2 import (
EventsServerService,
EventsServerService_Stub,
+ EventsClientService_Stub,
EventResponse,
SignalRequest,
RegisterRequest,
+ PingRequest,
SOLEDAD_CREATING_KEYS,
CLIENT_UID,
)
@@ -39,11 +47,6 @@ from leap.common.events.events_pb2 import (
port = 8090
received = False
-local_callback_executed = False
-
-
-def callback(request, reponse):
- return True
class EventsTestCase(unittest.TestCase):
@@ -51,7 +54,7 @@ class EventsTestCase(unittest.TestCase):
@classmethod
def setUpClass(cls):
server.EventsServerDaemon.ensure(8090)
- cls.callbacks = events.component.registered_callbacks
+ cls.callbacks = events.client.registered_callbacks
@classmethod
def tearDownClass(cls):
@@ -62,8 +65,8 @@ class EventsTestCase(unittest.TestCase):
super(EventsTestCase, self).setUp()
def tearDown(self):
- #events.component.registered_callbacks = {}
- server.registered_components = {}
+ #events.client.registered_callbacks = {}
+ server.registered_clients = {}
super(EventsTestCase, self).tearDown()
def test_service_singleton(self):
@@ -76,24 +79,24 @@ class EventsTestCase(unittest.TestCase):
self.assertEqual(service1, service2,
"Can't get singleton class for service.")
- def test_component_register(self):
+ def test_client_register(self):
"""
- Ensure components can register callbacks.
+ Ensure clients can register callbacks.
"""
self.assertTrue(1 not in self.callbacks,
'There should should be no callback for this signal.')
events.register(1, lambda x: True)
self.assertTrue(1 in self.callbacks,
- 'Could not register signal in local component.')
+ 'Could not register signal in local client.')
events.register(2, lambda x: True)
self.assertTrue(1 in self.callbacks,
- 'Could not register signal in local component.')
+ 'Could not register signal in local client.')
self.assertTrue(2 in self.callbacks,
- 'Could not register signal in local component.')
+ 'Could not register signal in local client.')
def test_register_signal_replace(self):
"""
- Make sure components can replace already registered callbacks.
+ Make sure clients can replace already registered callbacks.
"""
sig = 3
cbk = lambda x: True
@@ -120,21 +123,32 @@ class EventsTestCase(unittest.TestCase):
response = service.signal(request, timeout=1000)
self.assertEqual(EventResponse.OK, response.status,
'Wrong response status.')
- # test asynch
- def local_callback(request, response):
- global local_callback_executed
- local_callback_executed = True
+ def test_signal_executes_callback(self):
+ """
+ Ensure callback is executed upon receiving signal.
+ """
+ sig = CLIENT_UID
+ request = SignalRequest()
+ request.event = sig
+ request.content = 'my signal contents'
+ request.mac_method = mac_auth.MacMethod.MAC_NONE
+ request.mac = ""
+ service = RpcService(EventsServerService_Stub, port, 'localhost')
- events.register(sig, local_callback)
- service.signal(request, callback=local_callback)
- time.sleep(0.1)
- self.assertTrue(local_callback_executed,
- 'Local callback did not execute.')
+ # register a callback
+ flag = Mock()
+ events.register(sig, lambda req: flag(req.event))
+ # signal
+ response = service.signal(request)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+ time.sleep(1) # wait for signal to arrive
+ flag.assert_called_once_with(sig)
def test_events_server_service_register(self):
"""
- Ensure the server can register components to be signaled.
+ Ensure the server can register clients to be signaled.
"""
sig = 5
request = RegisterRequest()
@@ -143,42 +157,39 @@ class EventsTestCase(unittest.TestCase):
request.mac_method = mac_auth.MacMethod.MAC_NONE
request.mac = ""
service = RpcService(EventsServerService_Stub, port, 'localhost')
- complist = server.registered_components
+ complist = server.registered_clients
self.assertEqual({}, complist,
'There should be no registered_ports when '
'server has just been created.')
response = service.register(request, timeout=1000)
self.assertTrue(sig in complist, "Signal not registered succesfully.")
self.assertTrue(8091 in complist[sig],
- 'Failed registering component port.')
+ 'Failed registering client port.')
- def test_component_request_register(self):
+ def test_client_request_register(self):
"""
- Ensure components can register themselves with server.
+ Ensure clients can register themselves with server.
"""
sig = 6
- complist = server.registered_components
+ complist = server.registered_clients
self.assertTrue(sig not in complist,
- 'There should be no registered components for this '
+ 'There should be no registered clients for this '
'signal.')
events.register(sig, lambda x: True)
time.sleep(0.1)
- port = component.EventsComponentDaemon.get_instance().get_port()
- self.assertTrue(sig in complist, 'Failed registering component.')
+ port = client.EventsClientDaemon.get_instance().get_port()
+ self.assertTrue(sig in complist, 'Failed registering client.')
self.assertTrue(port in complist[sig],
- 'Failed registering component port.')
+ 'Failed registering client port.')
- def test_component_receives_signal(self):
+ def test_client_receives_signal(self):
"""
- Ensure components can receive signals.
+ Ensure clients can receive signals.
"""
sig = 7
+ flag = Mock()
- def getsig(param=None):
- global received
- received = True
-
- events.register(sig, getsig)
+ events.register(sig, lambda req: flag(req.event))
request = SignalRequest()
request.event = sig
request.content = ""
@@ -188,46 +199,230 @@ class EventsTestCase(unittest.TestCase):
response = service.signal(request, timeout=1000)
self.assertTrue(response is not None, 'Did not receive response.')
time.sleep(0.5)
- self.assertTrue(received, 'Did not receive signal back.')
+ flag.assert_called_once_with(sig)
- def test_component_send_signal(self):
+ def test_client_send_signal(self):
"""
- Ensure components can send signals.
+ Ensure clients can send signals.
"""
sig = 8
response = events.signal(sig)
self.assertTrue(response.status == response.OK,
'Received wrong response status when signaling.')
- def test_component_unregister_all(self):
+ def test_client_unregister_all(self):
"""
- Test that the component can unregister all events for one signal.
+ Test that the client can unregister all events for one signal.
"""
sig = CLIENT_UID
- complist = server.registered_components
+ complist = server.registered_clients
events.register(sig, lambda x: True)
events.register(sig, lambda x: True)
time.sleep(0.1)
events.unregister(sig)
time.sleep(0.1)
- port = component.EventsComponentDaemon.get_instance().get_port()
+ port = client.EventsClientDaemon.get_instance().get_port()
self.assertFalse(bool(complist[sig]))
self.assertTrue(port not in complist[sig])
- def test_component_unregister_by_uid(self):
+ def test_client_unregister_by_uid(self):
"""
- Test that the component can unregister an event by uid.
+ Test that the client can unregister an event by uid.
"""
sig = CLIENT_UID
- complist = server.registered_components
+ complist = server.registered_clients
events.register(sig, lambda x: True, uid='cbkuid')
events.register(sig, lambda x: True, uid='cbkuid2')
time.sleep(0.1)
events.unregister(sig, uid='cbkuid')
time.sleep(0.1)
- port = component.EventsComponentDaemon.get_instance().get_port()
+ port = client.EventsClientDaemon.get_instance().get_port()
self.assertTrue(sig in complist)
self.assertTrue(len(complist[sig]) == 1)
self.assertTrue(
- component.registered_callbacks[sig].pop()[0] == 'cbkuid2')
+ client.registered_callbacks[sig].pop()[0] == 'cbkuid2')
self.assertTrue(port in complist[sig])
+
+ def test_server_replies_ping(self):
+ """
+ Ensure server replies to a ping.
+ """
+ request = PingRequest()
+ service = RpcService(EventsServerService_Stub, port, 'localhost')
+ response = service.ping(request, timeout=1000)
+ self.assertIsNotNone(response)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+
+ def test_client_replies_ping(self):
+ """
+ Ensure clients reply to a ping.
+ """
+ daemon = client.ensure_client_daemon()
+ port = daemon.get_port()
+ request = PingRequest()
+ service = RpcService(EventsClientService_Stub, port, 'localhost')
+ response = service.ping(request, timeout=1000)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+
+ def test_server_ping(self):
+ """
+ Ensure the function from server module pings correctly.
+ """
+ response = server.ping()
+ self.assertIsNotNone(response)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+
+ def test_client_ping(self):
+ """
+ Ensure the function from client module pings correctly.
+ """
+ daemon = client.ensure_client_daemon()
+ response = client.ping(daemon.get_port())
+ self.assertIsNotNone(response)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+
+ def test_module_ping_server(self):
+ """
+ Ensure the function from main module pings server correctly.
+ """
+ response = events.ping_server()
+ self.assertIsNotNone(response)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+
+ def test_module_ping_client(self):
+ """
+ Ensure the function from main module pings clients correctly.
+ """
+ daemon = client.ensure_client_daemon()
+ response = events.ping_client(daemon.get_port())
+ self.assertIsNotNone(response)
+ self.assertEqual(EventResponse.OK, response.status,
+ 'Wrong response status.')
+
+ def test_ensure_server_raises_if_port_taken(self):
+ """
+ Verify that server raises an exception if port is already taken.
+ """
+ # get a random free port
+ while True:
+ port = random.randint(1024, 65535)
+ try:
+ s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ s.connect(('localhost', port))
+ s.close()
+ except:
+ break
+
+ class PortBlocker(threading.Thread):
+
+ def run(self):
+ conns = 0
+ s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ s.bind(('localhost', port))
+ s.setblocking(1)
+ s.listen(1)
+ while conns < 2: # blocks until rece
+ conns += 1
+ s.accept()
+ s.close()
+
+ # block the port
+ taker = PortBlocker()
+ taker.start()
+ time.sleep(1) # wait for thread to start.
+ self.assertRaises(
+ server.PortAlreadyTaken, server.ensure_server, port)
+
+ def test_async_register(self):
+ """
+ Test asynchronous registering of callbacks.
+ """
+ flag = Mock()
+
+ # executed after async register, when response is received from server
+ def reqcbk(request, response):
+ flag(request.event)
+
+ # callback registered by application
+ def callback(request):
+ pass
+
+ # passing a callback as reqcbk param makes the call asynchronous
+ result = events.register(CLIENT_UID, callback, reqcbk=reqcbk)
+ self.assertIsNone(result)
+ events.signal(CLIENT_UID)
+ time.sleep(1) # wait for signal to arrive from server
+ flag.assert_called_once_with(CLIENT_UID)
+
+ def test_async_signal(self):
+ """
+ Test asynchronous registering of callbacks.
+ """
+ flag = Mock()
+
+ # executed after async signal, when response is received from server
+ def reqcbk(request, response):
+ flag(request.event)
+
+ # passing a callback as reqcbk param makes the call asynchronous
+ result = events.signal(CLIENT_UID, reqcbk=reqcbk)
+ self.assertIsNone(result)
+ time.sleep(1) # wait for signal to arrive from server
+ flag.assert_called_once_with(CLIENT_UID)
+
+ def test_async_unregister(self):
+ """
+ Test asynchronous unregistering of callbacks.
+ """
+ flag = Mock()
+
+ # executed after async signal, when response is received from server
+ def reqcbk(request, response):
+ flag(request.event)
+
+ # callback registered by application
+ def callback(request):
+ pass
+
+ # passing a callback as reqcbk param makes the call asynchronous
+ events.register(CLIENT_UID, callback)
+ result = events.unregister(CLIENT_UID, reqcbk=reqcbk)
+ self.assertIsNone(result)
+ time.sleep(1) # wait for signal to arrive from server
+ flag.assert_called_once_with(CLIENT_UID)
+
+ def test_async_ping_server(self):
+ """
+ Test asynchronous pinging of server.
+ """
+ flag = Mock()
+
+ # executed after async signal, when response is received from server
+ def reqcbk(request, response):
+ flag()
+
+ result = events.ping_server(reqcbk=reqcbk)
+ self.assertIsNone(result)
+ time.sleep(1) # wait for response to arrive from server.
+ flag.assert_called_once_with()
+
+ def test_async_ping_client(self):
+ """
+ Test asynchronous pinging of client.
+ """
+ flag = Mock()
+
+ # executed after async signal, when response is received from server
+ def reqcbk(request, response):
+ flag()
+
+ daemon = client.ensure_client_daemon()
+ result = events.ping_client(daemon.get_port(), reqcbk=reqcbk)
+ self.assertIsNone(result)
+ time.sleep(1) # wait for response to arrive from server.
+ flag.assert_called_once_with()
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 04:04:15 +0000