Simple REST sample

server/samples/REST1.py

@@ -0,0 +1,137 @@
+# -*- coding: utf-8 -*-
+
+#
+# Copyright (c) 2014 Virtual Cable S.L.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+#    * Redistributions of source code must retain the above copyright notice,
+#      this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright notice,
+#      this list of conditions and the following disclaimer in the documentation
+#      and/or other materials provided with the distribution.
+#    * Neither the name of Virtual Cable S.L. nor the names of its contributors
+#      may be used to endorse or promote products derived from this software
+#      without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+'''
+@author: Adolfo Gómez, dkmaster at dkmon dot com
+'''
+from __future__ import unicode_literals
+
+from httplib2 import Http
+import json
+
+rest_url = 'http://172.27.0.1:8000/rest/'
+
+headers = {}
+
+# Hace login con el root, puede usarse cualquier autenticador y cualquier usuario, pero en la 1.5 solo está implementado poder hacer
+# este tipo de login con el usuario "root"
+def login():
+    global headers
+    h = Http()
+
+    parameters = '{ "auth": "admin", "username": "root", "password": "temporal" }'
+
+    resp, content = h.request(rest_url + 'auth/login', method='POST', body=parameters)
+
+    if resp['status'] != '200':  # Authentication error due to incorrect parameters, bad request, etc...
+        print "Authentication error"
+        return -1
+
+    # resp contiene las cabeceras, content el contenido de la respuesta (que es json), pero aún está en formato texto
+    res = json.loads(content)
+    print res
+    if res['result'] != 'ok':  # Authentication error
+        print "Authentication error"
+        return -1
+
+    headers['X-Auth-Token'] = res['token']
+
+    return 0
+
+def logout():
+    global headers
+    h = Http()
+
+    resp, content = h.request(rest_url + 'auth/logout', headers=headers)
+
+    if resp['status'] != '200':  # Logout error due to incorrect parameters, bad request, etc...
+        print "Error requesting logout"
+        return -1
+
+    # Return value of logout method is nonsense (returns always done right now, but it's not important)
+
+    return 0
+
+# Sample response from request_pools
+# [
+#     {
+#        u'initial_srvs': 0,
+#        u'name': u'WinAdolfo',
+#        u'max_srvs': 0,
+#        u'comments': u'',
+#        u'id': 6,
+#        u'state': u'A',
+#        u'user_services_count': 3,
+#        u'cache_l2_srvs': 0,
+#        u'service_id': 9,
+#        u'provider_id': 2,
+#        u'cache_l1_srvs': 0,
+#        u'restrained': False}
+# ]
+
+def request_pools():
+    h = Http()
+
+    resp, content = h.request(rest_url + 'servicespools/overview', headers=headers)
+    if resp['status'] != '200':  # error due to incorrect parameters, bad request, etc...
+        print "Error requesting pools"
+        return {}
+
+    return json.loads(content)
+
+# PATH: /rest/providers/[provider_id]/services/[service_id]
+def request_service_info(provider_id, service_id):
+    h = Http()
+
+    resp, content = h.request(rest_url + 'providers/{0}/services/{1}'.format(provider_id, service_id), headers=headers)
+    if resp['status'] != '200':  # error due to incorrect parameters, bad request, etc...
+        print "Error requesting pools"
+        return {}
+
+    return json.loads(content)
+
+if __name__ == '__main__':
+    request_pools()  # Not logged in, this will generate an error
+
+    if login() == 0:  # If we can log in, will get the pools correctly
+        res = request_pools()
+        print res
+        for r in res:
+            res2 = request_service_info(r['provider_id'], r['service_id'])
+            print "Base Service info por pool {0}: {1}".format(r['name'], res2)
+        print "First logout"
+        print logout()  # This will success
+        print "Second logout"
+        print logout()  # This will fail (already logged out)
+        # Also new requests will fail
+        print request_pools()
+        # Untin we do log in again
+        login()
+        print request_pools()
+