Adiciona endpoint para publicar datasets

Pipfile

@@ -9,6 +9,7 @@ pylint = "*"
 
 [packages]
 flask = "*"
+marshmallow = "*"
 
 [requires]
 python_version = "3"

laguinho/__init__.py

@@ -1,8 +1,13 @@
 from flask import Flask
+from .errors.handlers import errors
+from .routes.datasets import datasets
 
 def create_app(config_filename=None):
     app = Flask(__name__)
-
+
+    app.register_blueprint(errors)
+    app.register_blueprint(datasets)
+
     @app.route('/')
     def hello_world():
         return 'Laguinho API is up and running.'

laguinho/errors/handlers.py

@@ -0,0 +1,8 @@
+from flask import Blueprint, jsonify
+from marshmallow import ValidationError
+
+errors = Blueprint('errors', __name__)
+
+@errors.app_errorhandler(ValidationError)
+def handle_validation_error(e):
+    return jsonify(e.messages), 422

laguinho/models/metadata.py

@@ -0,0 +1,9 @@
+from marshmallow import Schema, fields, pprint, validate
+
+class MetadataSchema(Schema):
+    name = fields.Str(required=True, error_messages={"required": {"message": "Name is required."}})
+    url = fields.Str(required=True, error_messages={"required": {"message": "URL is required."}})
+    path = fields.Str(required=True, error_messages={"required": {"message": "Path is required."}})
+    maintainers = fields.List(fields.Str())
+    format = fields.Str(validate=validate.OneOf(["json", "csv"]), required=True, error_messages={"required": {"message": "Format is required."}})
+    contributable = fields.Bool()

laguinho/routes/datasets.py

@@ -0,0 +1,17 @@
+from flask import Blueprint, request, jsonify
+from laguinho.models.metadata import MetadataSchema
+from marshmallow import ValidationError, EXCLUDE
+
+datasets = Blueprint('datasets', __name__, url_prefix="/datasets")
+metadata = []
+
+@datasets.route("/publish", methods=['POST'])
+def publish():
+    schema = MetadataSchema()
+    result = schema.load(request.json, unknown=EXCLUDE)
+    metadata.append(result)
+    return result
+
+@datasets.route("/metadata", methods=['GET'])
+def get_metadata():
+    return jsonify(metadata)