X-Git-Url: https://code.grnet.gr/git/ganeti-local/blobdiff_plain/ee6c7b9434ceff1110205c05174c634235ddac51..48297fa279792c8e456bb432bf2c8d108bcb7d1f:/lib/luxi.py

diff --git a/lib/luxi.py b/lib/luxi.py
index 2c8cb82..308de9f 100644
--- a/lib/luxi.py
+++ b/lib/luxi.py
@@ -21,11 +21,11 @@
 
 """Module for the unix socket protocol
 
-This module implements the local unix socket protocl. You only need
+This module implements the local unix socket protocol. You only need
 this module and the opcodes module in the client program in order to
 communicate with the master.
 
-The module is also be used by the master daemon.
+The module is also used by the master daemon.
 
 """
 
@@ -36,6 +36,7 @@ import errno
 
 from ganeti import serializer
 from ganeti import constants
+from ganeti import errors
 
 
 KEY_METHOD = 'method'
@@ -44,10 +45,17 @@ KEY_SUCCESS = "success"
 KEY_RESULT = "result"
 
 REQ_SUBMIT_JOB = "SubmitJob"
+REQ_WAIT_FOR_JOB_CHANGE = "WaitForJobChange"
 REQ_CANCEL_JOB = "CancelJob"
 REQ_ARCHIVE_JOB = "ArchiveJob"
+REQ_AUTOARCHIVE_JOBS = "AutoArchiveJobs"
 REQ_QUERY_JOBS = "QueryJobs"
 REQ_QUERY_INSTANCES = "QueryInstances"
+REQ_QUERY_NODES = "QueryNodes"
+REQ_QUERY_EXPORTS = "QueryExports"
+REQ_QUERY_CONFIG_VALUES = "QueryConfigValues"
+REQ_QUERY_CLUSTER_INFO = "QueryClusterInfo"
+REQ_QUEUE_SET_DRAIN_FLAG = "SetDrainFlag"
 
 DEF_CTMO = 10
 DEF_RWTO = 60
@@ -151,7 +159,7 @@ class Transport:
       except socket.timeout, err:
         raise TimeoutError("Connect timed out: %s" % str(err))
       except socket.error, err:
-        if err.args[0] == errno.ENOENT:
+        if err.args[0] in (errno.ENOENT, errno.ECONNREFUSED):
           raise NoMasterError((address,))
         raise
       self.socket.settimeout(self._rwtimeout)
@@ -245,7 +253,32 @@ class Client(object):
     """
     if address is None:
       address = constants.MASTER_SOCKET
-    self.transport = transport(address, timeouts=timeouts)
+    self.address = address
+    self.timeouts = timeouts
+    self.transport_class = transport
+    self.transport = None
+    self._InitTransport()
+
+  def _InitTransport(self):
+    """(Re)initialize the transport if needed.
+
+    """
+    if self.transport is None:
+      self.transport = self.transport_class(self.address,
+                                            timeouts=self.timeouts)
+
+  def _CloseTransport(self):
+    """Close the transport, ignoring errors.
+
+    """
+    if self.transport is None:
+      return
+    try:
+      old_transp = self.transport
+      self.transport = None
+      old_transp.Close()
+    except Exception, err:
+      pass
 
   def CallMethod(self, method, args):
     """Send a generic request and return the response.
@@ -257,8 +290,18 @@ class Client(object):
       KEY_ARGS: args,
       }
 
+    # Serialize the request
+    send_data = serializer.DumpJson(request, indent=False)
+
     # Send request and wait for response
-    result = self.transport.Call(serializer.DumpJson(request, indent=False))
+    try:
+      self._InitTransport()
+      result = self.transport.Call(send_data)
+    except Exception:
+      self._CloseTransport()
+      raise
+
+    # Parse the result
     try:
       data = serializer.LoadJson(result)
     except Exception, err:
@@ -270,11 +313,23 @@ class Client(object):
         KEY_RESULT not in data):
       raise DecodingError("Invalid response from server: %s" % str(data))
 
+    result = data[KEY_RESULT]
+
     if not data[KEY_SUCCESS]:
       # TODO: decide on a standard exception
-      raise RequestError(data[KEY_RESULT])
+      if (isinstance(result, (tuple, list)) and len(result) == 2 and
+          isinstance(result[1], (tuple, list))):
+        # custom ganeti errors
+        err_class = errors.GetErrorClass(result[0])
+        if err_class is not None:
+          raise err_class, tuple(result[1])
+
+      raise RequestError(result)
 
-    return data[KEY_RESULT]
+    return result
+
+  def SetQueueDrainFlag(self, drain_flag):
+    return self.CallMethod(REQ_QUEUE_SET_DRAIN_FLAG, drain_flag)
 
   def SubmitJob(self, ops):
     ops_state = map(lambda op: op.__getstate__(), ops)
@@ -286,10 +341,37 @@ class Client(object):
   def ArchiveJob(self, job_id):
     return self.CallMethod(REQ_ARCHIVE_JOB, job_id)
 
+  def AutoArchiveJobs(self, age):
+    timeout = (DEF_RWTO - 1) / 2
+    return self.CallMethod(REQ_AUTOARCHIVE_JOBS, (age, timeout))
+
+  def WaitForJobChange(self, job_id, fields, prev_job_info, prev_log_serial):
+    timeout = (DEF_RWTO - 1) / 2
+    while True:
+      result = self.CallMethod(REQ_WAIT_FOR_JOB_CHANGE,
+                               (job_id, fields, prev_job_info,
+                                prev_log_serial, timeout))
+      if result != constants.JOB_NOTCHANGED:
+        break
+    return result
+
   def QueryJobs(self, job_ids, fields):
     return self.CallMethod(REQ_QUERY_JOBS, (job_ids, fields))
 
-  def QueryInstances(self, names, fields):
-    return self.CallMethod(REQ_QUERY_INSTANCES, (names, fields))
+  def QueryInstances(self, names, fields, use_locking):
+    return self.CallMethod(REQ_QUERY_INSTANCES, (names, fields, use_locking))
+
+  def QueryNodes(self, names, fields, use_locking):
+    return self.CallMethod(REQ_QUERY_NODES, (names, fields, use_locking))
+
+  def QueryExports(self, nodes, use_locking):
+    return self.CallMethod(REQ_QUERY_EXPORTS, (nodes, use_locking))
+
+  def QueryClusterInfo(self):
+    return self.CallMethod(REQ_QUERY_CLUSTER_INFO, ())
+
+  def QueryConfigValues(self, fields):
+    return self.CallMethod(REQ_QUERY_CONFIG_VALUES, fields)
+
 
 # TODO: class Server(object)