upload-commit.groovy

//route handler (Bootstrap.groovy):
post "/oci/upload-commit", { req, res ->
    /*
    expects a JSON object in the request body that looks like this:
    {
        uploadId: "",
        objectName: "",
        uploads: [
            {
                partNum: 1,
                ETag: "",
            }
        ]
    }
    */
    Map body = new JsonSlurper().parseText(req.body())
    def details = []
    body.uploads.each { Map file ->
        details << CommitMultipartUploadPartDetails.builder()
                .partNum(file.partNum)
                .etag(file.ETag)
                .build()

    }

    return JsonOutput.toJson( objectService.commitMultipartUpload(body.objectName, body.uploadId, details) )
}

//service method (ObjectService.groovy):
def commitMultipartUpload(String objectName, String uploadId, List<CommitMultipartUploadPartDetails> partDetails) {
    CommitMultipartUploadDetails commitMultipartUploadDetails = CommitMultipartUploadDetails.builder().partsToCommit(partDetails).build()
    CommitMultipartUploadRequest commitMultipartUploadRequest = CommitMultipartUploadRequest.builder()
            .namespaceName(namespaceName)
            .bucketName(bucketName)
            .objectName(objectName)
            .uploadId(uploadId)
            .commitMultipartUploadDetails(commitMultipartUploadDetails)
            .build()
    return objectClient.commitMultipartUpload(commitMultipartUploadRequest)
}