Rest endpoint that serves up a file; how to handle contentTypes?

[davidhatten]

Hi, so I'm using your plugin to download files from Nexus. I can hit the /resolve endpoint just fine, but when trying to hit /artifact/maven/content (see here: https://repository.sonatype.org/nexus-restlet1x-plugin/default/docs/path__artifact_maven_content.html) I can't seem to get it to work. Most of the time it hangs and then fails because it runs out of heap space.

Is there some configuration I'm overlooking? Or is there maybe some task/class I can create to handle the download of the output of that rest request?

Thanks.

[noamt]

On the face of it sounds as though you should use the streaming interface rather than reading the whole response to memory.
It would be best if you can share a build.gradle file that reproduces the issue.

[davidhatten]

That's probably a good idea; I'm not very gradle proficient yet, so I'll look into figuring out how to stream it.

The actual use case is kind of convoluted, but basically I have a task that's doing this

task "resolve_db"(type: org._10ne.gradle.rest.RestTask) {
        httpMethod = 'get'
        uri = 'https://nexus-URL/nexus/service/local/artifact/maven/content?g=group&a=artifactId&v=LATEST&r=repo'
        contentType = groovyx.net.http.ContentType.HTML
        requestHeaders = [Authorization:  'AuthStuff']
        responseHandler {
            println "I got a response"
    }
}

This will hang on the resolve_db task and then fail with a Java Heap Space exception.

Thanks for the suggestion, i'll work on thta.

[davidhatten]

update: I found some documentation and examples, but now I've found a different error that might actually be a bug.

It seems like the InputStream is already consumed by the time I get it in the response handler. The following task produces an error that the stream is already closed

task "resolve_db"(type: org._10ne.gradle.rest.RestTask) {
    httpMethod = 'get'
    uri = 'https://nexus-URL/nexus/service/local/artifact/maven/content?g=group&a=artifactID&v=LATEST&r=repo&e=tar'
    requestHeaders = [Authorization:  'AuthStuff']
    responseHandler { InputStream is ->
        new File("databases"+File.separator+"db.tar").withOutputStream { OutputStream os ->
            os << is
        }
        println "I got a response"

        println "Downloaded database ${db}"
    }
}

[noamt]

Yes, you're right.
It looks like a bug caused by some behavior I didn't anticipate from the groovy HTTP builder.
It'll require some changes but I'll get it fixed.

[davidhatten]

Thanks for the prompt response, but don't rush on my account; I found a plugin that more narrowly targets what I want to do (that is, download a file from a URL).

But if I ever need to make raw HTTP requests in gradle, I know where to look :)