upload-part.groovy

//route handler (Bootstrap.groovy):
post "/oci/upload-part", { req, res ->
    req.attribute("org.eclipse.jetty.multipartConfig", new MultipartConfigElement("/tmp"))
    HttpRequestWrapper reqRaw = req.raw()
    InputStream is = reqRaw.getPart("uploadPart").getInputStream()
    def objectName = req.queryParams("objectName")
    def partNum = req.queryParams("partNum").toInteger()
    def uploadId = req.queryParams("uploadId")
    return JsonOutput.toJson( objectService.uploadPart(is, objectName, uploadId, partNum) )
}

//service method (ObjectService.groovy):
def uploadPart(InputStream inputStream, String objectName, String uploadId, int partNum) {
    UploadPartRequest uploadPartRequest = UploadPartRequest.builder()
            .namespaceName(namespaceName)
            .bucketName(bucketName)
            .objectName(objectName)
            .uploadPartBody(inputStream)
            .uploadId(uploadId)
            .uploadPartNum(partNum)
            .build()
    return objectClient.uploadPart(uploadPartRequest)
}