xmlrpc: add support for token reusing

We add support to specify a connection token in the command line
and in the environment variable BBTOKEN.

When a client registers to a bitbake server, that client
will have exclusive access to the server. The client is identified
by a server-supplied token. If a client terminates, we cannot
reconnect to the server as the token is lost.

This patch adds the capability to specify the connection token
in the command line for xmlrpc clients. This allows us
to have bitbake work as an already-authenticated
client with the server and resume sending commands to a server.

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>

1 files changed, 12 insertions, 7 deletions

diff --git a/lib/bb/server/xmlrpc.py b/lib/bb/server/xmlrpc.py
index d6f4338ae..4205a4c35 100644
--- a/lib/bb/server/xmlrpc.py
+++ b/lib/bb/server/xmlrpc.py
@@ -281,13 +281,16 @@ class BitBakeXMLRPCServerConnection(BitBakeBaseServerConnection):
         self.observer_only = observer_only
         self.featureset = featureset
 
-    def connect(self):
-        if not self.observer_only:
-            token = self.connection.addClient()
-        else:
-            token = "observer"
+    def connect(self, token = None):
+        if token is None:
+            if self.observer_only:
+                token = "observer"
+            else:
+                token = self.connection.addClient()
+
         if token is None:
             return None
+
         self.transport.set_connection_token(token)
 
         self.events = uievent.BBUIEventQueue(self.connection, self.clientinfo)
@@ -336,7 +339,9 @@ class BitBakeServer(BitBakeBaseServer):
 
 class BitBakeXMLRPCClient(BitBakeBaseServer):
 
-    def __init__(self, observer_only = False):
+    def __init__(self, observer_only = False, token = None):
+        self.token = token
+
         self.observer_only = observer_only
         # if we need extra caches, just tell the server to load them all
         pass
@@ -366,7 +371,7 @@ class BitBakeXMLRPCClient(BitBakeBaseServer):
         try:
             self.serverImpl = XMLRPCProxyServer(host, port)
             self.connection = BitBakeXMLRPCServerConnection(self.serverImpl, (ip, 0), self.observer_only, featureset)
-            return self.connection.connect()
+            return self.connection.connect(self.token)
         except Exception as e:
             bb.warn("Could not connect to server at %s:%s (%s)" % (host, port, str(e)))
             raise e