Add Validation to gwlf-e/run Endpoint

Make sure `input` and `job_uuid` are not specified together, and that
`input` has all the required valid keys to run the modeling.

We are not validating the value of the input in /run/ since there are
more than 400 keys in the input object.

A follow-up issue will be added to call out specific missing keys from
the payload when checking the `input` of `gwlf-e/run/`

Author: emilyhu0106

src/mmw/apps/geoprocessing_api/validation.py

@@ -102,6 +102,18 @@ def validate_gwlfe_prepare(data):
         raise ValidationError(error)
 
 
+def validate_gwlfe_run(input, job_uuid):
+    if not check_gwlfe_only_one([input, job_uuid]):
+        error = ('Invalid parameter: Only one type of prepared input'
+                 '(input JSON or job_uuid) is allowed')
+        raise ValidationError(error)
+
+    if not check_gwlfe_run_input(input):
+        error = ("Invalid input: Please use the full result "
+                 "of gwlf-e/prepare endpoint's result object")
+        raise ValidationError(error)
+
+
 def check_gwlfe_only_one(params):
     if sum(map(check_is_none, params)) == 1:
         return True
@@ -132,6 +144,11 @@ def check_streams_layer_overrides(layers):
     return layers['__STREAMS__'] in STREAM_LAYER_OVERRIDES
 
 
+def check_gwlfe_run_input(input):
+    result = all(el in input for el in settings.GWLFE_DEFAULTS.keys())
+    return result
+
+
 def create_layer_overrides_keys_not_valid_msg(layers):
     error = 'These layers are not standard layers for layer overrides: '
     for layler in layers:

src/mmw/apps/geoprocessing_api/views.py

@@ -45,7 +45,8 @@
 
 from apps.geoprocessing_api.validation import (validate_rwd,
                                                validate_uuid,
-                                               validate_gwlfe_prepare)
+                                               validate_gwlfe_prepare,
+                                               validate_gwlfe_run)
 
 
 @swagger_auto_schema(method='post',
@@ -1707,11 +1708,12 @@ def _parse_gwlfe_input(request, raw_input=True):
         model_input = request.data.get('input')
 
         if model_input:
-            # TODO #3484 Validate model_input
+            validate_gwlfe_run(model_input, job_uuid)
             return model_input, job_uuid, mods, hash
 
     if not job_uuid:
-        raise ValidationError('`job_uuid` must be specified')
+        raise ValidationError('Either `input` or `job_uuid` '
+                              'must be specified.')
 
     if not validate_uuid(job_uuid):
         raise ValidationError(f'Invalid `job_uuid`: {job_uuid}')
@@ -1727,5 +1729,6 @@ def _parse_gwlfe_input(request, raw_input=True):
 
     model_input = json.loads(input_job.result)
 
-    # TODO #3484 Validate model_input
+    validate_gwlfe_run(model_input, job_uuid)
+
     return model_input, job_uuid, mods, hash