feat: improve error handling during submission

src/main/java/org/eclipse/cbi/ws/macos/notarization/process/NativeProcess.java

@@ -122,6 +122,10 @@ public InputStream stdoutAsStream() throws IOException {
 			return Files.newInputStream(stdout, StandardOpenOption.READ);
 		}
 
+		public InputStream stderrAsStream() throws IOException {
+			return Files.newInputStream(stderr, StandardOpenOption.READ);
+		}
+
 		Result log() {
 			LOGGER.trace(this.toString());
 			if (exitValue == 0) {

src/main/java/org/eclipse/cbi/ws/macos/notarization/xcrun/notarytool/NotarytoolNotarizer.java

@@ -7,14 +7,17 @@
  *******************************************************************************/
 package org.eclipse.cbi.ws.macos.notarization.xcrun.notarytool;
 
+import com.google.common.base.Charsets;
 import com.google.common.collect.ImmutableList;
+import com.google.common.io.CharStreams;
 import org.eclipse.cbi.ws.macos.notarization.process.NativeProcess;
 import org.eclipse.cbi.ws.macos.notarization.xcrun.common.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.xml.sax.SAXException;
 
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.nio.file.Path;
 import java.util.*;
 import java.util.concurrent.ExecutionException;
@@ -36,7 +39,7 @@ protected List<String> getUploadCommand(String appleIDUsername, String appleIDPa
     }
 
     @Override
-    protected NotarizerResult analyzeSubmissionResult(NativeProcess.Result nativeProcessResult, Path fileToNotarize) throws ExecutionException {
+    protected NotarizerResult analyzeSubmissionResult(NativeProcess.Result nativeProcessResult, Path fileToNotarize) {
         NotarizerResultBuilder resultBuilder = NotarizerResult.builder();
         try {
             PListDict plist = PListDict.fromXML(nativeProcessResult.stdoutAsStream());
@@ -66,7 +69,19 @@ protected NotarizerResult analyzeSubmissionResult(NativeProcess.Result nativePro
             }
         } catch (IOException | SAXException e) {
             LOGGER.error("Error while parsing the output after the upload of '" + fileToNotarize + "' to the Apple notarization service", e);
-            throw new ExecutionException("Error while parsing the output after the upload of the file to be notarized", e);
+
+            String errorMessage;
+
+            try {
+                errorMessage =
+                    CharStreams.toString(new InputStreamReader(nativeProcessResult.stderrAsStream(), Charsets.UTF_8));
+            } catch (IOException ex) {
+                errorMessage = "unknown error. See server log for more details.";
+            }
+
+            resultBuilder
+                .status(NotarizerResult.Status.UPLOAD_FAILED)
+                .message("Failed to notarize the requested file. Reason: " + errorMessage);
         }
         return resultBuilder.build();
     }

src/test/java/org/eclipse/cbi/ws/macos/notarization/xcrun/notarytool/NotarytoolNotarizerTest.java

@@ -17,8 +17,7 @@
 import java.nio.file.Path;
 import java.util.concurrent.ExecutionException;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.*;
 
 public class NotarytoolNotarizerTest {
 
@@ -49,6 +48,26 @@ public void analyzeSuccessfulSubmission() throws ExecutionException {
         assertEquals("Successfully uploaded file", result.message());
     }
 
+    @Test
+    public void analyzeFailureSubmissionDueToRequiredAgreement() throws ExecutionException {
+        Path stdout = Path.of(this.getClass().getResource("submission-empty.log").getPath());
+        Path stderr = Path.of(this.getClass().getResource("submission-failure.log").getPath());
+
+        NativeProcess.Result r =
+                NativeProcess.Result.builder()
+                        .exitValue(0)
+                        .arg0("")
+                        .stdout(stdout)
+                        .stderr(stderr)
+                        .build();
+
+        NotarizerResult result = tool.analyzeSubmissionResult(r, Path.of("SuperDuper.dmg"));
+
+        assertEquals(NotarizerResult.Status.UPLOAD_FAILED, result.status());
+        assertTrue(result.message().startsWith("Failed to notarize the requested file. Reason: Error: " +
+                "HTTP status code: 403. A required agreement is missing or has expired."));
+    }
+
     @Test
     public void analyzeInfoInProgress() throws ExecutionException {
         Path stdout = Path.of(this.getClass().getResource("info-in-progress.log").getPath());

src/test/resources/org/eclipse/cbi/ws/macos/notarization/xcrun/notarytool/submission-failure.log

@@ -0,0 +1 @@
+Error: HTTP status code: 403. A required agreement is missing or has expired. This request requires an in-effect agreement that has not been signed or has expired. Ensure your team has signed the necessary legal agreements and that they are not expired.