creating task with image via rest api

[roik7]

Hello,
I'm new to cvat but from what I saw so far it's a great project, thank you!
I'm trying to create multiple tasks using the rest api.
Task is being created but when updating its data (http://localhost:8080/api/v1/tasks/<task_id>/data) I get a failure.
Looking at the task log inside the docker image I see the following error:
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/rq/worker.py", line 812, in perform_job
rv = job.perform()
File "/usr/local/lib/python3.5/dist-packages/rq/job.py", line 588, in perform
self._result = self._execute()
File "/usr/local/lib/python3.5/dist-packages/rq/job.py", line 594, in _execute
return self.func(*self.args, **self.kwargs)
File "/usr/lib/python3.5/contextlib.py", line 30, in inner
return func(*args, **kwds)
File "/home/django/cvat/apps/engine/task.py", line 372, in _create_thread
_copy_images_to_task(upload_dir, db_task)
File "/home/django/cvat/apps/engine/task.py", line 244, in _copy_images_to_task
raise ValueError("Image files were not found")
ValueError: Image files were not found

This was when I started to suspect there's a problem with the way I upload the images 😄
But not sure what it is the correct format in which they should be sent.
Attaching the code for the upload (I give a directory path in which all the images I want to upload are in, at the moment it's one image that I'm able to upload using the UI).
Any help will be much appreciated.

def add_files_to_task(self, task_id, file_keys, file_source=CLIENT_FILE_UPLOAD_METHOD_NAME):
        update_task_data_request = self._create_url(server_url=SERVER,
                                                    path_params=[API_VERSION, TASK_PATH, str(task_id), TASK_DATA_PATH])
        print("update task data request: {}".format(update_task_data_request))
        get_files_method = self._resolve_get_files_method_by_file_source(file_upload_method_name=file_source)
        data = get_files_method(file_keys=file_keys)
        update_task_data_response = requests.post(update_task_data_request, data=data, auth=self._auth)
        print("update task data response: {}".format(update_task_data_response.json()))
        return update_task_data_response

    def _resolve_get_files_method_by_file_source(self, file_upload_method_name):
        if file_upload_method_name == CLIENT_FILE_UPLOAD_METHOD_NAME:
            return self._get_data_with_files_from_client
        elif file_upload_method_name == SERVER_FILE_UPLOAD_METHOD_NAME:
            return self._get_data_with_file_names_in_server
        raise Exception("No upload method for files was selected")

    def _get_data_with_files_from_client(self, file_keys):
        client_files = []
        print("File paths are:{}".format(file_keys))
        for file_path in file_keys:
            client_file = open(file_path, encoding="utf8", errors='ignore').read()
            client_files.append(client_file)
        return  {
            "client_files": client_files
        }

   def _create_url(self, server_url, path_params):
        path = "/".join(path_params)
        return "{}/{}".format(server_url, path)

[nmanovic]

Hi @roik7 , answered in gitter. You need to add indexes. If you want to send only one file. Don't hesitate to contribute your script. We will be happy to have a simple script or an example. Thus other people can use the same functionality easily.

"client_files" --> "client_files[0]"

[roik7]

@nmanovic - thanks for the help!

for whoever using the requests lib the updated functions are:

    def add_files_to_task(self, task_id, file_keys, file_source=CLIENT_FILE_UPLOAD_METHOD_NAME):
        update_task_data_request = self._create_url(server_url=SERVER,
                                                    path_params=[API_VERSION, TASK_PATH, str(task_id), TASK_DATA_PATH])

        get_files_method = self._resolve_get_files_method_by_file_source(file_upload_method_name=file_source)
        files = get_files_method(file_keys=file_keys)
        return requests.post(update_task_data_request, files=files, auth=self._auth)


   def _get_data_with_files_from_local(self, file_keys):
        files = {}
        file_index = 0
        print("File paths are:{}".format(file_keys))
        for file_path in file_keys:
            local_file = self._get_file_from_path(file_path)
            file_key = "client_files[{}]".format(file_index)
            files[file_key] = local_file
            file_index += 1
        return files


    def _get_file_from_path(self, file_path):
        file_name = os.path.basename(file_path)
        return (file_name, open(file_path, "rb"))

[lmessinger]

for anyone arriving here, to explain further the code - TASK_DATA_PATH is data
so to add remote files, all is needed is:

remote_files = {'remote_files':['https://images.livemint.com/rf/Image-621x414/LiveMint/Period2/2018/03/17/Photos/Processed/[email protected]']}
dataApiEp = API_ENDPOINT + '/14/data' #14 is task id
`

requests.post(url = dataApiEp,json=remote_files,auth=('user','pwd')) #the auth means u added the rest_framework.authentication.BasicAuthentication at the django setting
`

[KuldeepPCodes]

for anyone arriving here, to explain further the code - TASK_DATA_PATH is data
so to add remote files, all is needed is:

remote_files = {'remote_files':['https://images.livemint.com/rf/Image-621x414/LiveMint/Period2/2018/03/17/Photos/Processed/[email protected]']}
dataApiEp = API_ENDPOINT + '/14/data' #14 is task id
`

requests.post(url = dataApiEp,json=remote_files,auth=('user','pwd')) #the auth means u added the rest_framework.authentication.BasicAuthentication at the django setting
`

hi i am also trying to add a image to task created by Rest end points but get an Value-Error saying :=#raise ValueError('No media data found')
cvat | ValueError: No media data found

[Qalababbass]

Hi, I had a similar task where i needed to create tasks in a pre-defined project in CVAT using CVAT REST API. I am also uploading images to these tasks. There are some other methods too for debug.
Maybe it will be helpful for somebody new at CVAT.
CVAT_REST_API

Happy for my contribution.