Revize fb987403

Re #8476 - Added and tested `get_certificate(id)`.

src/controllers/certificates_controller.py

@@ -156 +156 @@
         """
         CertController.setup()  # TODO remove after issue fixed
 
-        if connexion.request.is_json:
-            id = IdParameter.from_dict(connexion.request.get_json())  # noqa: E501
-        return 'do some magic!'
+        try:
+            v = int(id)
+        except ValueError:
+            return E_WRONG_PARAMETERS, 400
+
+        cert = CERTIFICATE_SERVICE.get_certificate(v)
+
+        if cert is None:
+            return E_NO_CERTIFICATES_FOUND, 205                 # TODO related to 204 issue
+        else:
+            return {"success": True, "data": cert.pem_data}
 
     @staticmethod
     def get_certificate_details_by_id(id):  # noqa: E501
@@ -217 +225 @@
         if certs is None:
             return E_GENERAL_ERROR, 500
         elif len(certs) == 0:
-            return E_NO_CERTIFICATES_FOUND, 204
+            return E_NO_CERTIFICATES_FOUND, 205         # TODO related to 204 issue
         else:
             ret = []
             for c in certs: