Add CRUD operations for project info table

bin/datastore.py

@@ -544,3 +544,60 @@ class Datastore:
 			self.maybe_commit()
 			# We do not commit if we've been passed a cursor, instead
 			# we assume that we are in the middle of a transaction
+
+
+	def add_info(self, key, value, cursor = None):
+		"""
+		Add an item of information to the project
+		"""
+		if cursor is None:
+			cur = self.conn.cursor()
+		else:
+			cur = cursor
+
+		qry = """
+			INSERT INTO info (key, value)
+			VALUES(%s, %s)
+			ON CONFLICT (key) DO UPDATE
+				SET value = EXCLUDED.value;
+		"""
+		cur.execute(qry, (key, value))
+		if cursor is None:
+			self.maybe_commit()
+			# We do not commit if we've been passed a cursor, instead
+			# we assume that we are in the middle of a transaction
+
+	def get_info(self, key, cursor = None):
+		"""
+		Retrieve an item of information from the project
+		"""
+		if cursor is None:
+			cur = self.conn.cursor()
+		else:
+			cur = cursor
+
+		qry = "SELECT value FROM info WHERE key = %s;"
+		cur.execute(qry, (key,))
+		res = cur.fetchone()
+		if cursor is None:
+			self.maybe_commit()
+			# We do not commit if we've been passed a cursor, instead
+			# we assume that we are in the middle of a transaction
+
+		return res
+
+	def del_info(self, key, cursor = None):
+		"""
+		Remove a an item of information from the project
+		"""
+		if cursor is None:
+			cur = self.conn.cursor()
+		else:
+			cur = cursor
+
+		qry = "DELETE FROM info WHERE key = %s;"
+		cur.execute(qry, (key,))
+		if cursor is None:
+			self.maybe_commit()
+			# We do not commit if we've been passed a cursor, instead
+			# we assume that we are in the middle of a transaction