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bitbake: knotty, xmlrpc: add observer-only mode

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I add an observer only mode for the knotty UI and
the XMLRPC server that will allow the UI to register
a callback with a server in order to receive events.

The observer-UI is able to send read-only commands to the
server, and also is able to register as an event handler.

Read-only commands are the commands that do not change
the state of the server and have been marked as such in
the command module.

The observer can switch to a full client if it calls addClient
at any time, and the server has no other client running.

(Bitbake rev: 4de9ee21f1fa4d04937cc7430fb1fc8b7a8f61e2)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Alexandru DAMIAN
2013-06-17 12:11:51 +01:00
committed by Richard Purdie
parent 194b395f85
commit 3ea9d647ec
5 changed files with 49 additions and 22 deletions
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bitbake/lib/bb/server/xmlrpc.py
+18 -8
View File
@@ -93,7 +93,7 @@ class BitBakeServerCommands():
"""
Run a cooker command on the server
"""
return self.cooker.command.runCommand(command)
return self.cooker.command.runCommand(command, self.server.readonly)
def terminateServer(self):
"""
@@ -124,7 +124,7 @@ class BitBakeServerCommands():
# ("service unavailable") is returned to the client.
class BitBakeXMLRPCRequestHandler(SimpleXMLRPCRequestHandler):
def __init__(self, request, client_address, server):
self.connection_token = server.connection_token
self.server = server
SimpleXMLRPCRequestHandler.__init__(self, request, client_address, server)
def do_POST(self):
@@ -132,9 +132,13 @@ class BitBakeXMLRPCRequestHandler(SimpleXMLRPCRequestHandler):
remote_token = self.headers["Bitbake-token"]
except:
remote_token = None
if remote_token != self.connection_token:
if remote_token != self.server.connection_token and remote_token != "observer":
self.report_503()
else:
if remote_token == "observer":
self.server.readonly = True
else:
self.server.readonly = False
SimpleXMLRPCRequestHandler.do_POST(self)
def report_503(self):
@@ -283,13 +287,17 @@ class XMLRPCServer(SimpleXMLRPCServer, BaseImplServer):
self.connection_token = token
class BitBakeXMLRPCServerConnection(BitBakeBaseServerConnection):
def __init__(self, serverImpl, clientinfo=("localhost", 0)):
def __init__(self, serverImpl, clientinfo=("localhost", 0), observer_only = False):
self.connection, self.transport = _create_server(serverImpl.host, serverImpl.port)
self.clientinfo = clientinfo
self.serverImpl = serverImpl
self.observer_only = observer_only
def connect(self):
token = self.connection.addClient()
if not self.observer_only:
token = self.connection.addClient()
else:
token = "observer"
if token is None:
return None
self.transport.set_connection_token(token)
@@ -299,7 +307,8 @@ class BitBakeXMLRPCServerConnection(BitBakeBaseServerConnection):
return self
def removeClient(self):
self.connection.removeClient()
if not self.observer_only:
self.connection.removeClient()
def terminate(self):
# Don't wait for server indefinitely
@@ -331,7 +340,8 @@ class BitBakeServer(BitBakeBaseServer):
class BitBakeXMLRPCClient(BitBakeBaseServer):
def __init__(self):
def __init__(self, observer_only = False):
self.observer_only = observer_only
pass
def saveConnectionDetails(self, remote):
@@ -354,7 +364,7 @@ class BitBakeXMLRPCClient(BitBakeBaseServer):
except:
return None
self.serverImpl = XMLRPCProxyServer(host, port)
self.connection = BitBakeXMLRPCServerConnection(self.serverImpl, (ip, 0))
self.connection = BitBakeXMLRPCServerConnection(self.serverImpl, (ip, 0), self.observer_only)
return self.connection.connect()
def endSession(self):