Merge branch 'devel-2.4'
[ganeti-local] / lib / config.py
index 51e9d1a..7d81b37 100644 (file)
@@ -125,6 +125,13 @@ class TemporaryReservationManager:
     return new_resource
 
 
+def _MatchNameComponentIgnoreCase(short_name, names):
+  """Wrapper around L{utils.text.MatchNameComponent}.
+
+  """
+  return utils.MatchNameComponent(short_name, names, case_sensitive=False)
+
+
 class ConfigWriter:
   """The interface to the cluster configuration.
 
@@ -212,7 +219,7 @@ class ConfigWriter:
     if mac in all_macs:
       raise errors.ReservationError("mac already in use")
     else:
-      self._temporary_macs.Reserve(mac, ec_id)
+      self._temporary_macs.Reserve(ec_id, mac)
 
   @locking.ssynchronized(_config_lock, shared=1)
   def ReserveLV(self, lv_name, ec_id):
@@ -226,7 +233,7 @@ class ConfigWriter:
     if lv_name in all_lvs:
       raise errors.ReservationError("LV already in use")
     else:
-      self._temporary_lvs.Reserve(lv_name, ec_id)
+      self._temporary_lvs.Reserve(ec_id, lv_name)
 
   @locking.ssynchronized(_config_lock, shared=1)
   def GenerateDRBDSecret(self, ec_id):
@@ -367,6 +374,7 @@ class ConfigWriter:
         configuration errors
 
     """
+    # pylint: disable-msg=R0914
     result = []
     seen_macs = []
     ports = {}
@@ -392,6 +400,27 @@ class ConfigWriter:
       result.append("cluster has invalid primary node '%s'" %
                     cluster.master_node)
 
+    def _helper(owner, attr, value, template):
+      try:
+        utils.ForceDictType(value, template)
+      except errors.GenericError, err:
+        result.append("%s has invalid %s: %s" % (owner, attr, err))
+
+    def _helper_nic(owner, params):
+      try:
+        objects.NIC.CheckParameterSyntax(params)
+      except errors.ConfigurationError, err:
+        result.append("%s has invalid nicparams: %s" % (owner, err))
+
+    # check cluster parameters
+    _helper("cluster", "beparams", cluster.SimpleFillBE({}),
+            constants.BES_PARAMETER_TYPES)
+    _helper("cluster", "nicparams", cluster.SimpleFillNIC({}),
+            constants.NICS_PARAMETER_TYPES)
+    _helper_nic("cluster", cluster.SimpleFillNIC({}))
+    _helper("cluster", "ndparams", cluster.SimpleFillND({}),
+            constants.NDS_PARAMETER_TYPES)
+
     # per-instance checks
     for instance_name in data.instances:
       instance = data.instances[instance_name]
@@ -411,6 +440,17 @@ class ConfigWriter:
                         (instance_name, idx, nic.mac))
         else:
           seen_macs.append(nic.mac)
+        if nic.nicparams:
+          filled = cluster.SimpleFillNIC(nic.nicparams)
+          owner = "instance %s nic %d" % (instance.name, idx)
+          _helper(owner, "nicparams",
+                  filled, constants.NICS_PARAMETER_TYPES)
+          _helper_nic(owner, filled)
+
+      # parameter checks
+      if instance.beparams:
+        _helper("instance %s" % instance.name, "beparams",
+                cluster.FillBE(instance), constants.BES_PARAMETER_TYPES)
 
       # gather the drbd ports for duplicate checks
       for dsk in instance.disks:
@@ -472,6 +512,13 @@ class ConfigWriter:
                       " drain=%s, offline=%s" %
                       (node.name, node.master_candidate, node.drained,
                        node.offline))
+      if node.group not in data.nodegroups:
+        result.append("Node '%s' has invalid group '%s'" %
+                      (node.name, node.group))
+      else:
+        _helper("node %s" % node.name, "ndparams",
+                cluster.FillND(node, data.nodegroups[node.group]),
+                constants.NDS_PARAMETER_TYPES)
 
     # nodegroups checks
     nodegroups_names = set()
@@ -487,6 +534,11 @@ class ConfigWriter:
         result.append("duplicate node group name '%s'" % nodegroup.name)
       else:
         nodegroups_names.add(nodegroup.name)
+      if nodegroup.ndparams:
+        _helper("group %s" % nodegroup.name, "ndparams",
+                cluster.SimpleFillND(nodegroup.ndparams),
+                constants.NDS_PARAMETER_TYPES)
+
 
     # drbd minors check
     _, duplicates = self._UnlockedComputeDRBDMap()
@@ -833,6 +885,13 @@ class ConfigWriter:
     return self._config_data.cluster.file_storage_dir
 
   @locking.ssynchronized(_config_lock, shared=1)
+  def GetSharedFileStorageDir(self):
+    """Get the shared file storage dir for this cluster.
+
+    """
+    return self._config_data.cluster.shared_file_storage_dir
+
+  @locking.ssynchronized(_config_lock, shared=1)
   def GetHypervisorType(self):
     """Get the hypervisor type for this cluster.
 
@@ -897,6 +956,16 @@ class ConfigWriter:
     if check_uuid:
       self._EnsureUUID(group, ec_id)
 
+    try:
+      existing_uuid = self._UnlockedLookupNodeGroup(group.name)
+    except errors.OpPrereqError:
+      pass
+    else:
+      raise errors.OpPrereqError("Desired group name '%s' already exists as a"
+                                 " node group (UUID: %s)" %
+                                 (group.name, existing_uuid),
+                                 errors.ECODE_EXISTS)
+
     group.serial_no = 1
     group.ctime = group.mtime = time.time()
     group.UpgradeConfig()
@@ -924,8 +993,7 @@ class ConfigWriter:
     self._config_data.cluster.serial_no += 1
     self._WriteConfig()
 
-  @locking.ssynchronized(_config_lock, shared=1)
-  def LookupNodeGroup(self, target):
+  def _UnlockedLookupNodeGroup(self, target):
     """Lookup a node group's UUID.
 
     @type target: string or None
@@ -949,6 +1017,20 @@ class ConfigWriter:
     raise errors.OpPrereqError("Node group '%s' not found" % target,
                                errors.ECODE_NOENT)
 
+  @locking.ssynchronized(_config_lock, shared=1)
+  def LookupNodeGroup(self, target):
+    """Lookup a node group's UUID.
+
+    This function is just a wrapper over L{_UnlockedLookupNodeGroup}.
+
+    @type target: string or None
+    @param target: group name or UUID or None to look for the default
+    @rtype: string
+    @return: nodegroup UUID
+
+    """
+    return self._UnlockedLookupNodeGroup(target)
+
   def _UnlockedGetNodeGroup(self, uuid):
     """Lookup a node group.
 
@@ -989,6 +1071,17 @@ class ConfigWriter:
     """
     return self._config_data.nodegroups.keys()
 
+  @locking.ssynchronized(_config_lock, shared=1)
+  def GetNodeGroupMembersByNodes(self, nodes):
+    """Get nodes which are member in the same nodegroups as the given nodes.
+
+    """
+    ngfn = lambda node_name: self._UnlockedGetNodeInfo(node_name).group
+    return frozenset(member_name
+                     for node_name in nodes
+                     for member_name in
+                       self._UnlockedGetNodeGroup(ngfn(node_name)).members)
+
   @locking.ssynchronized(_config_lock)
   def AddInstance(self, instance, ec_id):
     """Add an instance to the config.
@@ -1126,14 +1219,12 @@ class ConfigWriter:
     """
     return self._UnlockedGetInstanceList()
 
-  @locking.ssynchronized(_config_lock, shared=1)
   def ExpandInstanceName(self, short_name):
     """Attempt to expand an incomplete instance name.
 
     """
-    return utils.MatchNameComponent(short_name,
-                                    self._config_data.instances.keys(),
-                                    case_sensitive=False)
+    # Locking is done in L{ConfigWriter.GetInstanceList}
+    return _MatchNameComponentIgnoreCase(short_name, self.GetInstanceList())
 
   def _UnlockedGetInstanceInfo(self, instance_name):
     """Returns information about an instance.
@@ -1163,6 +1254,25 @@ class ConfigWriter:
     return self._UnlockedGetInstanceInfo(instance_name)
 
   @locking.ssynchronized(_config_lock, shared=1)
+  def GetInstanceNodeGroups(self, instance_name, primary_only=False):
+    """Returns set of node group UUIDs for instance's nodes.
+
+    @rtype: frozenset
+
+    """
+    instance = self._UnlockedGetInstanceInfo(instance_name)
+    if not instance:
+      raise errors.ConfigurationError("Unknown instance '%s'" % instance_name)
+
+    if primary_only:
+      nodes = [instance.primary_node]
+    else:
+      nodes = instance.all_nodes
+
+    return frozenset(self._UnlockedGetNodeInfo(node_name).group
+                     for node_name in nodes)
+
+  @locking.ssynchronized(_config_lock, shared=1)
   def GetAllInstancesInfo(self):
     """Get the configuration of all instances.
 
@@ -1209,14 +1319,12 @@ class ConfigWriter:
     self._config_data.cluster.serial_no += 1
     self._WriteConfig()
 
-  @locking.ssynchronized(_config_lock, shared=1)
   def ExpandNodeName(self, short_name):
-    """Attempt to expand an incomplete instance name.
+    """Attempt to expand an incomplete node name.
 
     """
-    return utils.MatchNameComponent(short_name,
-                                    self._config_data.nodes.keys(),
-                                    case_sensitive=False)
+    # Locking is done in L{ConfigWriter.GetNodeList}
+    return _MatchNameComponentIgnoreCase(short_name, self.GetNodeList())
 
   def _UnlockedGetNodeInfo(self, node_name):
     """Get the configuration of a node, as stored in the config.
@@ -1268,6 +1376,26 @@ class ConfigWriter:
         sec.append(inst.name)
     return (pri, sec)
 
+  @locking.ssynchronized(_config_lock, shared=1)
+  def GetNodeGroupInstances(self, uuid, primary_only=False):
+    """Get the instances of a node group.
+
+    @param uuid: Node group UUID
+    @param primary_only: Whether to only consider primary nodes
+    @rtype: frozenset
+    @return: List of instance names in node group
+
+    """
+    if primary_only:
+      nodes_fn = lambda inst: [inst.primary_node]
+    else:
+      nodes_fn = lambda inst: inst.all_nodes
+
+    return frozenset(inst.name
+                     for inst in self._config_data.instances.values()
+                     for node_name in nodes_fn(inst)
+                     if self._UnlockedGetNodeInfo(node_name).group == uuid)
+
   def _UnlockedGetNodeList(self):
     """Return the list of nodes which are in the configuration.
 
@@ -1332,6 +1460,17 @@ class ConfigWriter:
                     for node in self._UnlockedGetNodeList()])
     return my_dict
 
+  @locking.ssynchronized(_config_lock, shared=1)
+  def GetNodeGroupsFromNodes(self, nodes):
+    """Returns groups for a list of nodes.
+
+    @type nodes: list of string
+    @param nodes: List of node names
+    @rtype: frozenset
+
+    """
+    return frozenset(self._UnlockedGetNodeInfo(name).group for name in nodes)
+
   def _UnlockedGetMasterCandidateStats(self, exceptions=None):
     """Get the number of current and maximum desired and possible candidates.
 
@@ -1666,10 +1805,11 @@ class ConfigWriter:
                   self._config_data.nodegroups.values()]
     nodegroups_data = fn(utils.NiceSort(nodegroups))
 
-    return {
+    ssconf_values = {
       constants.SS_CLUSTER_NAME: cluster.cluster_name,
       constants.SS_CLUSTER_TAGS: cluster_tags,
       constants.SS_FILE_STORAGE_DIR: cluster.file_storage_dir,
+      constants.SS_SHARED_FILE_STORAGE_DIR: cluster.shared_file_storage_dir,
       constants.SS_MASTER_CANDIDATES: mc_data,
       constants.SS_MASTER_CANDIDATES_IPS: mc_ips_data,
       constants.SS_MASTER_IP: cluster.master_ip,
@@ -1688,6 +1828,13 @@ class ConfigWriter:
       constants.SS_UID_POOL: uid_pool,
       constants.SS_NODEGROUPS: nodegroups_data,
       }
+    bad_values = [(k, v) for k, v in ssconf_values.items()
+                  if not isinstance(v, (str, basestring))]
+    if bad_values:
+      err = utils.CommaJoin("%s=%s" % (k, v) for k, v in bad_values)
+      raise errors.ConfigurationError("Some ssconf key(s) have non-string"
+                                      " values: %s" % err)
+    return ssconf_values
 
   @locking.ssynchronized(_config_lock, shared=1)
   def GetSsconfValues(self):