From bae27930e515be66927f8f429aaed3b00fe2b6e4 Mon Sep 17 00:00:00 2001
From: naga-panchumarty <naga.panchumarty@nteligen.com>
Date: Fri, 26 Jun 2026 12:20:35 -0400
Subject: [PATCH] DFDL-1555: insteading of erroring yet, change to warning

Formatting fixed
---
 .../Support.scala                             | 21 ++++++---
 .../Support.scala                             | 45 +++++++++++++------
 .../Parse.scala                               |  2 +-
 3 files changed, 49 insertions(+), 19 deletions(-)

diff --git a/debugger/src/main/scala-2/org.apache.daffodil.debugger.dap/Support.scala b/debugger/src/main/scala-2/org.apache.daffodil.debugger.dap/Support.scala
index 76394f113..3f9316579 100644
--- a/debugger/src/main/scala-2/org.apache.daffodil.debugger.dap/Support.scala
+++ b/debugger/src/main/scala-2/org.apache.daffodil.debugger.dap/Support.scala
@@ -27,6 +27,8 @@ import java.nio.file.Path
 import org.apache.daffodil.sapi._
 import org.apache.daffodil.sapi.io.InputSourceDataInputStream
 import org.apache.daffodil.sapi.infoset.{JsonInfosetOutputter, XMLTextInfosetOutputter}
+import cats.effect.IO
+import cats.syntax.all._
 
 object Support {
   /* Daffodil DataProcessor wrapper methods */
@@ -34,11 +36,20 @@ object Support {
       p: DataProcessor,
       debugger: org.apache.daffodil.runtime1.debugger.Debugger,
       variables: Map[String, String]
-  ): DataProcessor =
-    p.withDebugger(debugger)
-      .withDebugging(true)
-      .withExternalVariables(variables)
-      .withValidationMode(ValidationMode.Limited)
+  ): IO[DataProcessor] = {
+    val base = p.withDebugger(debugger).withDebugging(true)
+
+    variables.toList
+      .foldLeftM(base) { case (dp, (k, v)) =>
+        IO(dp.withExternalVariables(Map(k -> v))).handleErrorWith {
+          case e: ExternalVariableException =>
+            IO.println(s"[WARNING] Skipping unknown external variable '$k': ${e.getMessage}") *>
+              IO.pure(dp)
+          case e => IO.raiseError(e)
+        }
+      }
+      .map(_.withValidationMode(ValidationMode.Limited))
+  }
 
   /* Daffodil infoset wrapper methods */
   def getInputSourceDataInputStream(data: InputStream): InputSourceDataInputStream = new InputSourceDataInputStream(
diff --git a/debugger/src/main/scala-3/org.apache.daffodil.debugger.dap/Support.scala b/debugger/src/main/scala-3/org.apache.daffodil.debugger.dap/Support.scala
index 5bd3e57f0..a46c825cd 100644
--- a/debugger/src/main/scala-3/org.apache.daffodil.debugger.dap/Support.scala
+++ b/debugger/src/main/scala-3/org.apache.daffodil.debugger.dap/Support.scala
@@ -26,23 +26,30 @@ import java.io._
 import java.nio.file.Path
 import org.apache.daffodil.api._
 import scala.jdk.CollectionConverters._
+import cats.effect.IO
+import cats.syntax.all._
+import org.apache.daffodil.api.exceptions.ExternalVariableException
 
 object Support {
   /* Daffodil DataProcessor wrapper methods */
-  def dataProcessorWithDebugger(p: DataProcessor, debugger: Debugger, variables: Map[String, String]): DataProcessor =
-    p.withDebugger(debugger)
-      .withExternalVariables(variables.asJava)
-      .withValidation("daffodil")
+  def dataProcessorWithDebugger(
+      p: DataProcessor,
+      debugger: Debugger,
+      variables: Map[String, String]
+  ): IO[DataProcessor] = {
+    val base = p.withDebugger(debugger)
 
-  /* Daffodil infoset wrapper methods */
-  def getInputSourceDataInputStream(data: InputStream): InputSourceDataInputStream =
-    Daffodil.newInputSourceDataInputStream(data)
-  def getInfosetOutputter(infosetFormat: String, stream: OutputStream): InfosetOutputter =
-    infosetFormat match {
-      case "xml"  => Daffodil.newXMLTextInfosetOutputter(stream, true)
-      case "json" => Daffodil.newJsonInfosetOutputter(stream, true)
-      case other  => throw new IllegalArgumentException(s"unsupported infosetFormat: $other")
-    }
+    variables.toList
+      .foldLeftM(base) { case (dp, (k, v)) =>
+        IO(dp.withExternalVariables(Map(k -> v).asJava)).handleErrorWith {
+          case e: ExternalVariableException =>
+            IO.println(s"[WARNING] Skipping unknown external variable '$k': ${e.getMessage}") *>
+              IO.pure(dp)
+          case e => IO.raiseError(e)
+        }
+      }
+      .map(_.withValidation("daffodil"))
+  }
 
   /* Daffodil ProcessorFactory wrapper methods */
   def getProcessorFactory(
@@ -56,9 +63,21 @@ object Support {
       .withTunables(tunables.asJava)
       .compileFile(schema.toFile(), rootName.orNull, rootNamespace.orNull)
 
+  /* Method to convert java list of diagnostics to a sequence of diagnostics */
   /* Method to convert java list of diagnostics to a sequence of diagnostics */
   def parseDiagnosticList(
       dl: java.util.List[org.apache.daffodil.api.Diagnostic]
   ): Seq[org.apache.daffodil.api.Diagnostic] =
     dl.asScala.toSeq
+
+  /* Daffodil infoset wrapper methods */
+  def getInputSourceDataInputStream(data: InputStream): InputSourceDataInputStream =
+    Daffodil.newInputSourceDataInputStream(data)
+
+  def getInfosetOutputter(infosetFormat: String, stream: OutputStream): InfosetOutputter =
+    infosetFormat match {
+      case "xml"  => Daffodil.newXMLTextInfosetOutputter(stream, true)
+      case "json" => Daffodil.newJsonInfosetOutputter(stream, true)
+      case other  => throw new IllegalArgumentException(s"unsupported infosetFormat: $other")
+    }
 }
diff --git a/debugger/src/main/scala/org.apache.daffodil.debugger.dap/Parse.scala b/debugger/src/main/scala/org.apache.daffodil.debugger.dap/Parse.scala
index 9bf80a0f7..0a0b2ecd9 100644
--- a/debugger/src/main/scala/org.apache.daffodil.debugger.dap/Parse.scala
+++ b/debugger/src/main/scala/org.apache.daffodil.debugger.dap/Parse.scala
@@ -82,7 +82,7 @@ object Parse {
     for {
       dp <- DAPCompiler()
         .compile(schema, rootName, rootNamespace, tunables)
-        .map(p => Support.dataProcessorWithDebugger(p, debugger, variables))
+        .flatMap(p => Support.dataProcessorWithDebugger(p, debugger, variables))
       done <- Ref[IO].of(false)
       pleaseStop <- Deferred[IO, Unit]
     } yield new Parse {