update paris poc gru connector model (#10073)

passerelle_paris_poc_gru/migrations/0002_auto_20160225_0743.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passerelle_paris_poc_gru', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='parispocgru',
+            name='consumer_key',
+            field=models.CharField(default=b'not provided', max_length=128, verbose_name='Consumer Key'),
+            preserve_default=True,
+        ),
+        migrations.AddField(
+            model_name='parispocgru',
+            name='consumer_secret',
+            field=models.CharField(default=b'not provided', max_length=128, verbose_name='Consumer Secret'),
+            preserve_default=True,
+        ),
+        migrations.AddField(
+            model_name='parispocgru',
+            name='url',
+            field=models.CharField(default=b'not provided', max_length=128, verbose_name='WebService Base Url'),
+            preserve_default=True,
+        ),
+    ]

passerelle_paris_poc_gru/models.py

@@ -13,7 +13,10 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+import base64
+import requests
 
+from django.db import models
 from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext_lazy as _
 
@@ -21,6 +24,18 @@ from passerelle.base.models import BaseResource
 
 
 class ParisPocGru(BaseResource):
+    url = models.CharField(max_length=128, blank=False,
+        default="not provided", verbose_name=_('WebService Base Url')
+    )
+
+    consumer_key = models.CharField(max_length=128, blank=False,
+        default="not provided", verbose_name=_('Consumer Key')
+    )
+
+    consumer_secret = models.CharField(max_length=128, blank=False,
+        default="not provided", verbose_name=_('Consumer Secret')
+    )
+
     category = _('Business Process Connectors')
 
     class Meta:
@@ -40,3 +55,20 @@ class ParisPocGru(BaseResource):
     @classmethod
     def get_icon_class(cls):
         return 'ressources'
+
+    def get_access_token(self):
+        cred = base64.b64encode('%s:%s' %(self.consumer_key, self.consumer_secret))
+        response = requests.post(
+            self.url+'/token',
+            headers = {
+                'Authorization': 'Basic %s' %cred,
+                'Content-Type': 'application/x-www-form-urlencoded'
+            },
+            data = {'grant_type': 'client_credentials'}
+        )
+
+        self.access_token = response.json()['access_token']
+        self.headers = {'Authorization': 'Bearer %s' %(self.access_token)}
+
+        return self.access_token
+