Seperate chef installer as a plugin (move chef_installer.py to plugins directory)

Bug: 1506700

This is the third change list of a series of changes that will eventually
convert chef installer as a plugin.
It moves chef_installer.py to the plugins/chef_installer/implementation
The related test was modified accordingly but should be moved to plugins directory in the next change list.

Change-Id: Idb2a6f7f9b1e612d737674d811e9b4e6d7b6212b

compass/deployment/installers/installer.py

@@ -25,6 +25,7 @@ import os
 import simplejson as json
 
 from compass.deployment.installers.config_manager import BaseConfigManager
+from compass.utils import setting_wrapper as compass_setting
 from compass.utils import util
 
 
@@ -272,6 +273,12 @@ class PKInstaller(BaseInstaller):
             return None
 
         path = os.path.join(cls.INSTALLER_BASE_DIR, name)
+        if not os.path.exists(path):
+            path = os.path.join(os.path.join(os.path.join(
+                compass_setting.PLUGINS_DIR, name), "implementation"), name)
+        if not os.path.exists(path):
+            logging.info("Installer '%s' is not existed!" % name)
+            return None
         installer = super(PKInstaller, cls).get_installer(name, path,
                                                           adapter_info,
                                                           cluster_info,

compass/tests/deployment/installers/pk_installers/chef_installer/test_chef.py

@@ -33,12 +33,13 @@ reload(compass_setting)
 
 
 from compass.deployment.installers.config_manager import BaseConfigManager
-from compass.deployment.installers.pk_installers.chef_installer.chef_installer\
-    import ChefInstaller
 from compass.tests.deployment.test_data import config_data
 from compass.utils import flags
 from compass.utils import logsetting
 
+# TODO(Carl) move this test to plugins
+from plugins.chef_installer.implementation.chef_installer import ChefInstaller
+
 
 class TestChefInstaller(unittest2.TestCase):
     """Test installer functionality."""

compass/tests_serverside/deployment/installers/pk_installers/chef_installer/test_chef_installer.py

@@ -33,8 +33,9 @@ reload(compass_setting)
 
 
 from compass.deployment.installers.config_manager import BaseConfigManager
-from compass.deployment.installers.pk_installers.chef_installer.chef_installer\
-    import ChefInstaller
+
+# TODO(Carl) move this test to plugins
+from plugins.chef_installer.implementation.chef_installer import ChefInstaller
 
 
 class TestChefInstaller(unittest2.TestCase):

plugins/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.

plugins/chef_installer/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.

plugins/chef_installer/implementation/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.