Add API prototype on Pecan

Add API prototype on Pecan.
Add functioanal tests.
Update documentation for running new API.
Delete old API and unit tests for it.

Change-Id: I42b3539d8420b2b5edf44d5265654b738e7ffa5e

doc/refstack.md

@@ -38,10 +38,7 @@ We use nginx and gunicorn, you may use something else if you so desire.
 For the most basic setup that you can try right now, just kick off
 gunicorn:
 
-`gunicorn -b 0.0.0.0:8000 refstack.web:app`
+`gunicorn_pecan refstack/api/config.py`
 
-To actually configure refstack, check out the config section and
-crack open refstack.cfg in your preffered editor.
-`vim refstack.cfg`
-
-Now browse to http://localhost:8000
+Now available http://localhost:8000/ with JSON response {'Root': 'OK'}
+and http://localhost:8000/v1/results/ with JSON response {'Results': 'OK'}.

refstack/api/app.py

@@ -1,5 +1,5 @@
-#
-# Copyright (c) 2014 Piston Cloud Computing, Inc. All Rights Reserved.
+# Copyright (c) 2015 Mirantis, Inc.
+# All Rights Reserved.
 #
 #    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
@@ -12,15 +12,16 @@
 #    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 unittest
+
+from pecan import make_app
 
 
-class TestSequenceFunctions(unittest.TestCase):
+def setup_app(config):
 
-    def test_nothing(self):
-        # make sure the shuffled sequence does not lose any elements
-        pass
+    app_conf = dict(config.app)
 
-if __name__ == '__main__':
-    unittest.main()
+    return make_app(
+        app_conf.pop('root'),
+        logging=getattr(config, 'logging', {}),
+        **app_conf
+    )

refstack/api/config.py

@@ -0,0 +1,63 @@
+# Copyright (c) 2015 Mirantis, Inc.
+# All Rights Reserved.
+#
+#    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.
+
+"""Configuration for running API.
+
+Custom Configurations must be in Python dictionary format:
+
+foo = {'bar':'baz'}
+
+All configurations are accessible at:
+pecan.conf
+"""
+
+# Server Specific Configurations
+server = {
+    'port': '8000',
+    'host': '0.0.0.0'
+}
+
+# Pecan Application Configurations
+app = {
+    'root': 'refstack.api.controllers.root.RootController',
+    'modules': ['refstack.api'],
+    'static_root': '%(confdir)s/public',
+    'template_path': '%(confdir)s/${package}/templates',
+    'debug': False,
+    'errors': {
+        '404': '/error/404',
+        '__force_dict__': True
+    }
+}
+
+logging = {
+    'loggers': {
+        'root': {'level': 'INFO', 'handlers': ['console']},
+        'refstack': {'level': 'DEBUG', 'handlers': ['console']}
+    },
+    'handlers': {
+        'console': {
+            'level': 'DEBUG',
+            'class': 'logging.StreamHandler',
+            'formatter': 'simple'
+        }
+    },
+    'formatters': {
+        'simple': {
+            'format': ('%(asctime)s %(levelname)-5.5s [%(name)s]'
+                       '[%(threadName)s] %(message)s')
+        }
+    }
+}

refstack/api/controllers/root.py

@@ -0,0 +1,28 @@
+# Copyright (c) 2015 Mirantis, Inc.
+# All Rights Reserved.
+#
+#    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.
+
+from pecan import expose
+
+from refstack.api.controllers import v1
+
+
+class RootController(object):
+
+    v1 = v1.V1Controller()
+
+    @expose('json')
+    def index(self):
+        """root response."""
+        return {'Root': 'OK'}

refstack/api/controllers/v1.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2015 Mirantis, Inc.
+# All Rights Reserved.
+#
+#    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.
+
+"""Version 1 of the API.
+"""
+from pecan import expose
+from pecan import rest
+
+
+class ResultsController(rest.RestController):
+
+    @expose('json')
+    def index(self):
+        return {'Results': 'OK'}
+
+
+class V1Controller(object):
+    """Version 1 API controller root."""
+
+    results = ResultsController()

refstack/tests/api/__init__.py

@@ -0,0 +1,72 @@
+# Copyright (c) 2015 Mirantis, Inc.
+# All Rights Reserved.
+#
+#    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.
+
+"""Base classes for API tests.
+"""
+from unittest import TestCase
+from pecan import set_config
+from pecan.testing import load_test_app
+
+
+class FunctionalTest(TestCase):
+    """
+    Used for functional tests where you need to test your
+    literal application and its integration with the framework.
+    """
+
+    def setUp(self):
+        self.config = {
+            'app': {
+                'root': 'refstack.api.controllers.root.RootController',
+                'modules': ['refstack.api'],
+                'static_root': '%(confdir)s/public',
+                'template_path': '%(confdir)s/${package}/templates',
+            }
+        }
+        self.app = load_test_app(self.config)
+
+    def tearDown(self):
+        set_config({}, overwrite=True)
+
+    def get_json(self, url, headers=None, extra_environ=None,
+                 status=None, expect_errors=False, **params):
+        """Sends HTTP GET request.
+
+        :param url: url path to target service
+        :param headers: a dictionary of extra headers to send
+        :param extra_environ: a dictionary of environmental variables that
+                              should be added to the request
+        :param status: integer or string of the HTTP status code you expect
+                       in response (if not 200 or 3xx). You can also use a
+                       wildcard, like '3*' or '*'
+        :param expect_errors: boolean value, if this is False, then if
+                              anything is written to environ wsgi.errors it
+                              will be an error. If it is True, then
+                              non-200/3xx responses are also okay
+        :param params: a query string, or a dictionary that will be encoded
+                       into a query string. You may also include a URL query
+                       string on the url
+
+        """
+        response = self.app.get(url,
+                                headers=headers,
+                                extra_environ=extra_environ,
+                                status=status,
+                                expect_errors=expect_errors,
+                                params=params)
+
+        if not expect_errors:
+            response = response.json
+        return response

refstack/tests/api/test_api.py

@@ -0,0 +1,29 @@
+# Copyright (c) 2015 Mirantis, Inc.
+# All Rights Reserved.
+#
+#    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.
+
+from refstack.tests import api
+
+
+class TestRefStackApi(api.FunctionalTest):
+
+    def test_root_controller(self):
+        actual_response = self.get_json('/')
+        expected_response = {'Root': 'OK'}
+        self.assertEqual(expected_response, actual_response)
+
+    def test_results_controller(self):
+        actual_response = self.get_json('/v1/results/')
+        expected_response = {'Results': 'OK'}
+        self.assertEqual(expected_response, actual_response)

refstack/tests/unit/__init__.py

@@ -1 +0,0 @@
-__author__ = 'dlenwell'

requirements.txt

@@ -1,6 +1,7 @@
 SQLAlchemy==0.8.3
 alembic==0.5.0
 gunicorn==0.17.4
+pecan>=0.8.2
 pyOpenSSL==0.13
 pycrypto==2.6
 requests==1.2.3