Create a new REST endpoint for fetching a phenotype's metadata

* gn3/api/general.py: (dataset_metadata) Delete.
* gn3/api/metadata.py: Import Blueprint, jsonify, current_app,
SPARQLWrapper and get_dataset_metadata.
(metadata): New Blueprint
(jsonify_dataset_metadata): New function/end-point.
* gn3/app.py: Import metadata
(create_app): Register metadata blueprint.

1 files changed, 22 insertions, 0 deletions

diff --git a/gn3/api/metadata.py b/gn3/api/metadata.py
new file mode 100644
index 0000000..4fe9e67
--- /dev/null
+++ b/gn3/api/metadata.py
@@ -0,0 +1,22 @@
+"""API for fetching metadata using an API"""
+from flask import Blueprint
+from flask import jsonify
+from flask import current_app
+
+from SPARQLWrapper import SPARQLWrapper
+
+from gn3.db.rdf import get_dataset_metadata
+
+
+metadata = Blueprint("metadata", __name__)
+
+
+@metadata.route("/dataset/<accession_id>", methods=["GET"])
+def jsonify_dataset_metadata(accession_id):
+    """Fetch a dataset's metadata given it's ACCESSION_ID"""
+    return jsonify(get_dataset_metadata(
+        SPARQLWrapper(current_app
+                      .config
+                      .get("SPARQL_ENDPOINT")),
+        accession_id
+    ).data)