Introducing pyobmc
We have openbmc python utilities scattered all over the place. To
facilitate reuse, bring them together in a single python package.
None of this is new code, it was all simply ported and re-arranged
from other projects.
Ran everything through pep8.
diff --git a/obmc/dbuslib/bindings.py b/obmc/dbuslib/bindings.py
new file mode 100644
index 0000000..51b9e59
--- /dev/null
+++ b/obmc/dbuslib/bindings.py
@@ -0,0 +1,172 @@
+# Contributors Listed Below - COPYRIGHT 2016
+# [+] International Business Machines Corp.
+#
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# permissions and limitations under the License.
+
+import dbus
+
+BUS_PREFIX = 'org.openbmc'
+OBJ_PREFIX = "/org/openbmc"
+BUS = "system"
+
+
+def is_unique(connection):
+ return connection[0] == ':'
+
+
+def get_system_name():
+ #use filename as system name, strip off path and ext
+ parts = __file__.replace('.pyc', '').replace('.py', '').split('/')
+ return parts[len(parts)-1]
+
+
+def get_dbus():
+ bus = None
+ if (BUS == "session"):
+ bus = dbus.SessionBus()
+ else:
+ bus = dbus.SystemBus()
+ return bus
+
+
+class DbusProperties(dbus.service.Object):
+ def __init__(self):
+ dbus.service.Object.__init__(self)
+ self.properties = {}
+ self.object_path = ""
+
+ @dbus.service.method(
+ dbus.PROPERTIES_IFACE,
+ in_signature='ss', out_signature='v')
+ def Get(self, interface_name, property_name):
+ d = self.GetAll(interface_name)
+ try:
+ v = d[property_name]
+ return v
+ except:
+ raise dbus.exceptions.DBusException(
+ "org.freedesktop.UnknownProperty: "+property_name)
+
+ @dbus.service.method(
+ dbus.PROPERTIES_IFACE,
+ in_signature='s', out_signature='a{sv}')
+ def GetAll(self, interface_name):
+ try:
+ d = self.properties[interface_name]
+ return d
+ except:
+ raise dbus.exceptions.DBusException(
+ "org.freedesktop.UnknownInterface: "+interface_name)
+
+ @dbus.service.method(
+ dbus.PROPERTIES_IFACE,
+ in_signature='ssv')
+ def Set(self, interface_name, property_name, new_value):
+ if (interface_name not in self.properties):
+ self.properties[interface_name] = {}
+ try:
+ old_value = self.properties[interface_name][property_name]
+ if (old_value != new_value):
+ self.properties[interface_name][property_name] = new_value
+ self.PropertiesChanged(
+ interface_name, {property_name: new_value}, [])
+
+ except:
+ self.properties[interface_name][property_name] = new_value
+ self.PropertiesChanged(
+ interface_name, {property_name: new_value}, [])
+
+ @dbus.service.method(
+ "org.openbmc.Object.Properties", in_signature='sa{sv}')
+ def SetMultiple(self, interface_name, prop_dict):
+ if (interface_name in self.properties):
+ self.properties[interface_name] = {}
+
+ value_changed = False
+ for property_name in prop_dict:
+ new_value = prop_dict[property_name]
+ try:
+ old_value = self.properties[interface_name][property_name]
+ if (old_value != new_value):
+ self.properties[interface_name][property_name] = new_value
+ value_changed = True
+
+ except:
+ self.properties[interface_name][property_name] = new_value
+ value_changed = True
+ if (value_changed is True):
+ self.PropertiesChanged(interface_name, prop_dict, [])
+
+ @dbus.service.signal(
+ dbus.PROPERTIES_IFACE, signature='sa{sv}as')
+ def PropertiesChanged(
+ self, interface_name, changed_properties, invalidated_properties):
+ pass
+
+
+class DbusObjectManager(dbus.service.Object):
+ def __init__(self):
+ dbus.service.Object.__init__(self)
+ self.objects = {}
+
+ def add(self, object_path, obj):
+ self.objects[object_path] = obj
+ self.InterfacesAdded(object_path, obj.properties)
+
+ def remove(self, object_path):
+ obj = self.objects.pop(object_path, None)
+ obj.remove_from_connection()
+ self.InterfacesRemoved(object_path, obj.properties.keys())
+
+ def get(self, object_path, default=None):
+ return self.objects.get(object_path, default)
+
+ @dbus.service.method(
+ "org.freedesktop.DBus.ObjectManager",
+ in_signature='', out_signature='a{oa{sa{sv}}}')
+ def GetManagedObjects(self):
+ data = {}
+ for objpath in self.objects.keys():
+ data[objpath] = self.objects[objpath].properties
+ return data
+
+ @dbus.service.signal(
+ "org.freedesktop.DBus.ObjectManager", signature='oa{sa{sv}}')
+ def InterfacesAdded(self, object_path, properties):
+ self.ObjectAdded(object_path, "")
+
+ @dbus.service.signal(
+ "org.freedesktop.DBus.ObjectManager", signature='oas')
+ def InterfacesRemoved(self, object_path, interfaces):
+ pass
+
+ ## Legacy support, need to eventually refactor out
+ @dbus.service.signal(
+ "org.openbmc.Object.ObjectMapper", signature='ss')
+ def ObjectAdded(self, object_path, interface_name):
+ pass
+
+ ## flattens interfaces
+ @dbus.service.method(
+ 'org.openbmc.Object.Enumerate', in_signature='',
+ out_signature='a{sa{sv}}')
+ def enumerate(self):
+ data = {}
+ for objpath in self.objects.keys():
+ props = self.objects[objpath].properties
+ data[objpath] = {}
+ for iface in props.keys():
+ data[objpath].update(props[iface])
+
+ return data