Initial commit

Add first working version of the statistics API.

app.py

@@ -0,0 +1,44 @@
+# Tested with Python 3.6
+# See DSpace Solr docs for tips about parameters
+# https://wiki.duraspace.org/display/DSPACE/Solr
+
+import falcon
+from SolrClient import SolrClient
+
+solr_server = 'http://localhost:3000/solr'
+solr_core = 'statistics'
+
+class ItemResource:
+    def on_get(self, req, resp):
+        """Handles GET requests"""
+        # Return HTTPBadRequest if id parameter is not present and valid
+        item_id = req.get_param_as_int("id", required=True, min=0)
+
+        solr = SolrClient(solr_server)
+
+        # Get views
+        res = solr.query(solr_core, {
+            'q':'type:0',
+            'fq':'owningItem:{0} AND isBot:false AND statistics_type:view AND -bundleName:ORIGINAL'.format(item_id)
+        })
+
+        views = res.get_num_found()
+
+        # Get downloads
+        res = solr.query(solr_core, {
+            'q':'type:0',
+            'fq':'owningItem:{0} AND isBot:false AND statistics_type:view AND -(bundleName:[* TO *] -bundleName:ORIGINAL)'.format(item_id)
+        })
+
+        downloads = res.get_num_found() 
+
+        statistics = {
+            'id': item_id,
+            'views': views,
+            'downloads': downloads
+        }
+
+        resp.media = statistics
+
+api = falcon.API()
+api.add_route('/item', ItemResource())