How to send an attachment to a REST service

[Cristian Yuste]

Hello,

I am trying to create a ScriptRunner post-function where I send the attachment in a ticket to a REST service via POST. According to the documentation of this service, I need to send the binary content of the attachment.

I have seen in the Atlassian documentation (https://docs.atlassian.com/software/jira/docs/api/9.12.2/com/atlassian/jira/issue/attachment/class-use/Attachment.html) that there is a method in the AttachmentManager class (streamAttachmentContent(Attachment attachment, InputStreamConsumer<T> consumer)) which returns the binary content of the attachment, but I don’t know how to handle the second parameter of the InputStreamConsumer. Can anyone give me a hand?

Thanks,
Best regards.

[Sergei Troshin]

Hi Cristian,

You picked up rigth path! Let me provide you some java method that returns first attachment for issue ABC-1234 in bytes

import groovy.transform.Field;
import org.apache.commons.io.IOUtils;
import com.atlassian.jira.issue.Issue;
import com.atlassian.jira.issue.AttachmentManager;
import com.atlassian.jira.issue.attachment.Attachment;
import com.atlassian.jira.component.ComponentAccessor;

@Field final AttachmentManager attachmentManager = ComponentAccessor.getAttachmentManager();
@Field Issue issue = ComponentAccessor.issueManager.getIssueByCurrentKey("ABC-1234")

getAttachmentFileBytes(issue.getAttachments()?.getAt(0))

byte[] getAttachmentFileBytes(Attachment attachment) throws IOException {
return attachmentManager.streamAttachmentContent(
attachment,
inputStream -> {
try (inputStream) {
return IOUtils.toByteArray(inputStream);
}
});
}

 Hope it will help you!