From: Julien Tribino <julien.tribino@inria.fr>
Date: Wed, 11 Jun 2014 11:59:30 +0000 (+0200)
Subject: Add the template for the API
X-Git-Tag: nepi-3.1.0~27
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=b4bb5a05aec6c01aaa34617fe6f947e4bf7c8ff8;p=nepi.git

Add the template for the API
---

diff --git a/doc/templates/template_api.py b/doc/templates/template_api.py
new file mode 100644
index 00000000..2c6b0b4a
--- /dev/null
+++ b/doc/templates/template_api.py
@@ -0,0 +1,93 @@
+#
+#    NEPI, a framework to manage network experiments
+#    Copyright (C) 2013 INRIA
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+#         Julien Tribino <julien.tribino@inria.fr>
+
+
+import hashlib
+import threading
+
+
+class NewAPIFactory(object):
+    """ 
+        Class for the new Api Factoy
+
+    """
+    # use lock to avoid concurrent access to the Api list at the same times by 2 
+    # different threads
+    lock = threading.Lock()
+    _apis = dict()
+
+    @classmethod 
+    def get_api(cls, cred1, cred2):
+        """ Get an instance of the API depending on the credentials
+
+        """
+        if cred1 and cred2:
+            key = cls._make_key(cred1,cred2)
+            cls.lock.acquire()
+            if key in cls._apis:
+                cls._apis[key]['cnt'] += 1
+                cls.lock.release()
+                return cls._apis[key]['api']
+            else :
+                new_api = cls.create_api(cred1, cred2)
+                cls.lock.release()
+                return new_api
+        return None
+
+    @classmethod 
+    def create_api(cls, cred1, cred2):
+        """ Create an instance of the API depending on the credentials
+
+        """
+        key = cls._make_key(cred1,cred2)
+        new_api = ClientAPI(cred1,cred2)
+        cls._apis[key] = {}
+        cls._apis[key]['api'] = new_api
+        cls._apis[key]['cnt'] = 1
+        return new_api
+
+    @classmethod 
+    def release_api(cls, cred1, cred2):
+        """ Release the API with this credentials
+
+        """
+        if cred1 and cred2:
+            key = cls._make_key(cred1,cred2)
+            if key in cls._apis:
+                cls._apis[key]['cnt'] -= 1
+                if cls._apis[key]['cnt'] == 0:
+                    new_api = cls._apis[key]['api']
+                    # if necessary, we can disconnect
+                    new_api.disconnect()
+
+
+    @classmethod 
+    def _make_key(cls, *args):
+        """ Hash the credentials in order to create a key
+
+        :param args: list of arguments used to create the hash (server, user, port, ...)
+        :type args: list
+
+        """
+        skey = "".join(map(str, args))
+        return hashlib.md5(skey).hexdigest()
+
+
+
diff --git a/doc/templates/template.py b/doc/templates/template_rm.py
similarity index 100%
rename from doc/templates/template.py
rename to doc/templates/template_rm.py