Remove extra context from workflow error message

Signed-off-by: Paolo Di Tommaso <paolo.ditommaso@gmail.com>

modules/nextflow/src/main/groovy/nextflow/Nextflow.groovy

@@ -21,14 +21,11 @@ import java.nio.file.Files
 import java.nio.file.NoSuchFileException
 import java.nio.file.Path
 
-import groovyx.gpars.dataflow.DataflowQueue
 import groovyx.gpars.dataflow.DataflowReadChannel
-import groovyx.gpars.dataflow.DataflowVariable
 import nextflow.ast.OpXform
 import nextflow.ast.OpXformImpl
-import nextflow.exception.ProcessUnrecoverableException
 import nextflow.exception.StopSplitIterationException
-import nextflow.extension.CH
+import nextflow.exception.WorkflowScriptErrorException
 import nextflow.extension.GroupKey
 import nextflow.extension.OperatorImpl
 import nextflow.file.FileHelper
@@ -215,7 +212,7 @@ class Nextflow {
      * @param message An optional error message
      */
     static void error( String message = null ) {
-        throw message ? new ProcessUnrecoverableException(message) : new ProcessUnrecoverableException()
+        throw message ? new WorkflowScriptErrorException(message) : new WorkflowScriptErrorException()
     }
 
     /**

modules/nextflow/src/main/groovy/nextflow/exception/PlainExceptionMessage.groovy

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2020-2022, Seqera Labs
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package nextflow.exception
+
+/**
+ * Marker interface for exceptions that should not report any addintional context
+ * other the exception message
+ * 
+ * @author Paolo Di Tommaso <paolo.ditommaso@gmail.com>
+ */
+interface PlainExceptionMessage {
+}

modules/nextflow/src/main/groovy/nextflow/exception/WorkflowScriptErrorException.groovy

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020-2022, Seqera Labs
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package nextflow.exception
+
+import groovy.transform.CompileStatic
+import groovy.transform.InheritConstructors
+
+/**
+ *
+ * @author Paolo Di Tommaso <paolo.ditommaso@gmail.com>
+ */
+@CompileStatic
+@InheritConstructors
+class WorkflowScriptErrorException extends ProcessUnrecoverableException implements PlainExceptionMessage {
+}

modules/nextflow/src/main/groovy/nextflow/util/LoggerHelper.groovy

@@ -56,6 +56,7 @@ import nextflow.cli.CliOptions
 import nextflow.cli.Launcher
 import nextflow.exception.AbortOperationException
 import nextflow.exception.ProcessException
+import nextflow.exception.PlainExceptionMessage
 import nextflow.exception.ScriptRuntimeException
 import nextflow.extension.OpCall
 import nextflow.file.FileHelper
@@ -491,6 +492,9 @@ class LoggerHelper {
         else {
             buffer.append("Unexpected error")
         }
+        if( fail instanceof PlainExceptionMessage )
+            return
+
         buffer.append(CoreConstants.LINE_SEPARATOR)
         buffer.append(CoreConstants.LINE_SEPARATOR)