Upload the contribution of vstf as bottleneck network framework.

[bottlenecks.git] / vstf / vstf / agent / env / vswitch_plugins / manager.py

diff --git a/vstf/vstf/agent/env/vswitch_plugins/manager.py b/vstf/vstf/agent/env/vswitch_plugins/manager.py
new file mode 100755 (executable)
index 0000000..00115df
--- /dev/null
+++ b/vstf/vstf/agent/env/vswitch_plugins/manager.py
@@ -0,0 +1,31 @@
+"""
+Created on 2015-9-15
+
+@author: y00228926
+"""
+import stevedore
+
+
+class VswitchPluginManager(object):
+    def __init__(self):
+        self.plugin = None
+        self.mgr = stevedore.extension.ExtensionManager(namespace="vswitch.plugins", invoke_on_load=True)
+
+    def clean(self):
+        if self.plugin:
+            self.plugin.clean()
+            self.plugin = None
+        for plugin in self.mgr.names():
+            self.mgr[plugin].obj.clean()
+        return True
+
+    def get_vs_plugin(self, plugin):
+        if plugin in self.mgr.names():
+            ext = self.mgr[plugin]
+            self.plugin = ext.obj
+            return self.plugin
+        else:
+            raise Exception("unsupported vswitch plugin: %s" % plugin)
+
+    def get_supported_plugins(self):
+        return self.mgr.names()