utils: display warning messages about REANA spec validation

Closes reanahub#660

CHANGES.rst

@@ -4,6 +4,7 @@ Changes
 Version 0.9.1 (UNRELEASED)
 --------------------------
 
+- Changes ``validate`` command to display non-critical validation warnings when checking the REANA specification file.
 - Adds ``prune`` command to delete all intermediate files of a given workflow.
 - Fixes ``list`` command to correctly list workflows when sorting them by their run number or by the size of their workspace.
 - Fixes ``du`` command help message typo.

reana_client/validation/utils.py

@@ -51,12 +51,39 @@ def validate_reana_spec(
             f"Verifying REANA specification file... {filepath}",
             msg_type="info",
         )
-        validate_reana_yaml(reana_yaml)
-        display_message(
-            "Valid REANA specification file.",
-            msg_type="success",
-            indented=True,
-        )
+        validation_warnings = validate_reana_yaml(reana_yaml)
+        if validation_warnings:
+            display_message(
+                "The REANA specification appears valid, but some warnings were found.",
+                msg_type="warning",
+                indented=True,
+            )
+        for warning_key, warning_value in validation_warnings.items():
+            if warning_key == "additional_properties":
+                # warning_values is a list of unexpected properties
+                message = (
+                    f"Unexpected properties found in REANA specification file: "
+                    f"{', '.join(warning_value)}"
+                )
+            else:
+                message = warning_value
+            display_message(
+                message,
+                msg_type="warning",
+                indented=True,
+            )
+        if validation_warnings:
+            display_message(
+                "Please make sure that the REANA specification file is correct.",
+                msg_type="warning",
+                indented=True,
+            )
+        else:
+            display_message(
+                "Valid REANA specification file.",
+                msg_type="success",
+                indented=True,
+            )
 
         validate_parameters(reana_yaml)
 

setup.py

@@ -45,7 +45,7 @@
     "click>=7",
     "pathspec==0.9.0",
     "jsonpointer>=2.0",
-    "reana-commons[yadage,snakemake,cwl]>=0.9.3a4,<0.10.0",
+    "reana-commons[yadage,snakemake,cwl]>=0.9.3a5,<0.10.0",
     "tablib>=0.12.1,<0.13",
     "werkzeug>=0.14.1 ; python_version<'3.10'",
     "werkzeug>=0.15.0 ; python_version>='3.10'",