Create API endpoint for fetching trait metadata

* gn3/api/metadata.py (dataset_metadata): New function and endpoint.
(jsonify_dataset_metadata): Rename to dataset_metadata.

Signed-off-by: Munyoki Kilyungi <me@bonfacemunyoki.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/gn3/api/metadata.py b/gn3/api/metadata.py
index 8f6127f..f87743b 100644
--- a/gn3/api/metadata.py
+++ b/gn3/api/metadata.py
@@ -8,13 +8,14 @@ from flask import current_app
 from SPARQLWrapper import SPARQLWrapper
 
 from gn3.db.rdf import get_dataset_metadata
+from gn3.db.rdf import get_trait_metadata
 
 
 metadata = Blueprint("metadata", __name__)
 
 
 @metadata.route("/dataset/<name>", methods=["GET"])
-def jsonify_dataset_metadata(name):
+def dataset_metadata(name):
     """Fetch a dataset's metadata given it's ACCESSION_ID"""
     try:
         return jsonify(
@@ -26,3 +27,18 @@ def jsonify_dataset_metadata(name):
     # The virtuoso server is misconfigured or it isn't running at all
     except (RemoteDisconnected, URLError):
         return jsonify({})
+
+
+@metadata.route("/dataset/<dataset_name>/trait/<trait_name>", methods=["GET"])
+def trait_metadata(dataset_name, trait_name):
+    """Fetch a trait's metadata given the trait_name and dataset_name'"""
+    try:
+        return jsonify(
+            get_trait_metadata(
+                SPARQLWrapper(current_app.config.get("SPARQL_ENDPOINT")),
+                trait_name, dataset_name
+            ).data
+        )
+    # The virtuoso server is misconfigured or it isn't running at all
+    except (RemoteDisconnected, URLError):
+        return jsonify({})