Add attachments from the junit-attachments plugin into Jira attachments

pom.xml

@@ -136,6 +136,10 @@
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>matrix-project</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.jenkins-ci.plugins</groupId>
+      <artifactId>junit-attachments</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.atlassian.jira</groupId>
       <artifactId>jira-rest-java-client-api</artifactId>

src/main/java/org/jenkinsci/plugins/JiraTestResultReporter/JiraUtils.java

@@ -25,7 +25,9 @@
 import com.atlassian.jira.rest.client.api.domain.input.IssueInputBuilder;
 import com.atlassian.jira.rest.client.api.domain.util.ErrorCollection;
 import hudson.EnvVars;
+import hudson.FilePath;
 import hudson.model.Job;
+import hudson.plugins.junitattachments.AttachmentPublisher;
 import hudson.tasks.junit.CaseResult;
 import hudson.tasks.test.TestResult;
 import io.atlassian.util.concurrent.Promise;
@@ -34,6 +36,7 @@
 import org.jenkinsci.plugins.JiraTestResultReporter.config.AbstractFields;
 
 import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.net.URI;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
@@ -230,6 +233,20 @@ private static String createIssueInput(IssueInput issueInput, CaseResult test) {
         if (StringUtils.isNotBlank(test.getErrorDetails())) {
             issueClient.addAttachment(attachmentsUri, new ByteArrayInputStream(test.getErrorDetails().getBytes(StandardCharsets.UTF_8)), "details.out").claim();
         }
+
+        FilePath attachmentStorage = AttachmentPublisher.getAttachmentPath(test.getRun());
+        JiraUtils.log(attachmentStorage.getName());
+        try {
+            if (attachmentStorage.exists()) {
+                FilePath attachmentPath = AttachmentPublisher.getAttachmentPath(attachmentStorage, test.getClassName());
+                JiraUtils.log(attachmentPath.getName());
+                for (FilePath file : attachmentPath.list()) {
+                    issueClient.addAttachment(attachmentsUri, file.read(), file.getName()).claim();
+                }
+            }
+        } catch (IOException | InterruptedException e) {
+            JiraUtils.log(String.format("Unable to access to attachment storage for %s:%s", test.getName(), test.getRun().getId()));
+        }        
         return key;
     }