(nifi) branch main updated: NIFI-16141 Aligned validation message formatting of JSLTTransformJSON with JoltTransformJSON (#11472)

[exceptionfactory]

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The following commit(s) were added to refs/heads/main by this push:
     new 576046b79dc NIFI-16141 Aligned validation message formatting of 
JSLTTransformJSON with JoltTransformJSON (#11472)
576046b79dc is described below

commit 576046b79dc5b88433c990f4df6bebea08917b46
Author: dan-s1 <dsti...@gmail.com>
AuthorDate: Fri Jul 24 21:12:54 2026 -0400

    NIFI-16141 Aligned validation message formatting of JSLTTransformJSON with 
JoltTransformJSON (#11472)
    
    Signed-off-by: David Handermann <exceptionfact...@apache.org>
---
 .../org/apache/nifi/processors/jslt/JSLTTransformJSON.java    | 11 +++++++++--
 .../apache/nifi/processors/jslt/TestJSLTTransformJSON.java    |  2 +-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git 
a/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/main/java/org/apache/nifi/processors/jslt/JSLTTransformJSON.java
 
b/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/main/java/org/apache/nifi/processors/jslt/JSLTTransformJSON.java
index e7f152fcc4d..42b3fa63483 100644
--- 
a/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/main/java/org/apache/nifi/processors/jslt/JSLTTransformJSON.java
+++ 
b/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/main/java/org/apache/nifi/processors/jslt/JSLTTransformJSON.java
@@ -272,7 +272,14 @@ public class JSLTTransformJSON extends AbstractProcessor {
             getJstlExpression(transform, null);
             builder.valid(true);
         } catch (final RuntimeException e) {
-            builder.valid(false).explanation(e.getMessage());
+            final String reason;
+            final Throwable cause = e.getCause();
+            if (cause == null) {
+                reason = e.getMessage();
+            } else {
+                reason = "%s [%s]".formatted(cause.getMessage(), 
e.getMessage());
+            }
+            builder.valid(false).explanation(reason);
         }
         return builder.build();
     }
@@ -431,7 +438,7 @@ public class JSLTTransformJSON extends AbstractProcessor {
         try (final BufferedReader reader = new BufferedReader(new 
InputStreamReader(resourceReference.read()))) {
             return 
reader.lines().collect(Collectors.joining(System.lineSeparator()));
         } catch (final IOException e) {
-            throw new UncheckedIOException(String.format("Read JSLT Transform 
failed, reason: %s", e.getMessage()), e);
+            throw new UncheckedIOException("Read JSLT Transform failed", e);
         }
     }
 
diff --git 
a/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/test/java/org/apache/nifi/processors/jslt/TestJSLTTransformJSON.java
 
b/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/test/java/org/apache/nifi/processors/jslt/TestJSLTTransformJSON.java
index 4e7561a08d0..c0c10280dd2 100644
--- 
a/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/test/java/org/apache/nifi/processors/jslt/TestJSLTTransformJSON.java
+++ 
b/nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/test/java/org/apache/nifi/processors/jslt/TestJSLTTransformJSON.java
@@ -123,7 +123,7 @@ public class TestJSLTTransformJSON {
         runner.enqueue(json);
 
         final AssertionFailedError assertionFailedError = 
assertThrows(AssertionFailedError.class, () -> runner.run());
-        assertTrue(assertionFailedError.getMessage().contains("'JSLT 
Transformation' is invalid because Read JSLT Transform failed, reason:"));
+        assertTrue(assertionFailedError.getMessage().contains("'JSLT 
Transformation' is invalid because") && 
assertionFailedError.getMessage().contains("file"));
     }
 
     @ParameterizedTest