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Question

I’m trying to set up a docker stack for a datascience project and I want to use redis to have services exchange data.

I followed the documentation provided by label studio but there are a lot of details missing and my implementation doesn’t work.

Specifically : label studio is able to register redis as a data source but not as a data target, and as a source it doesn’t retrieve my tasks data.

what I tried

My Docker compose file

I removed any service unrelated to label-studio, and there is a .env file for the variables.
The postgres part works fine but I kept it in the example because its part of redis config.

services:
  postgres:
    image: postgres:16-alpine
    container_name: postgres
    ports:
      - ${POSTGRES_PORT}:5432
    environment:
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
      - PGDATA=/var/lib/postgresql/data/pgdata
      - POSTGRES_PORT=${POSTGRES_PORT}
    healthcheck:
      test: ["CMD-SHELL", "pg_isready", "-d", "postgres"]
      interval: 10s
      timeout: 10s
      retries: 120
    volumes:
      - pgdata:/var/lib/postgresql/data:Z

  redis:
    image: redis:5-alpine
    container_name: redis
    ports:
      - 6379:6379
    volumes:
      - redisdata:/data
    healthcheck:
      test: [ "CMD", "redis-cli", "--raw", "incr", "ping" ]
      interval: 10s
      timeout: 10s
      retries: 120
    command: [ "redis-server",
               "--save", "60", "1",
               "--loglevel", "debug",
               "--requirepass", "${REDIS_PASSWORD}"]

  label-studio:
    image: heartexlabs/label-studio:latest
    container_name: label-studio
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    ports:
      - 8081:8080
    environment:
      - DJANGO_DB=default
      - POSTGRE_HOST=postgres
      - POSTGRE_PORT=${POSTGRE_PORT}
      - POSTGRE_NAME=${POSTGRE_NAME}
      - POSTGRE_USER=${POSTGRE_USER}
      - POSTGRE_PASSWORD=${POSTGRE_PASSWORD}
      - REDIS_HOST=redis
      - REDIS_PORT=6379
      - REDIS_LOCATION=redis:6379
      - REDIS_DB=0
      - REDIS_PASSWORD=${REDIS_PASSWORD}
    volumes:
      - lsdata:/label-studio/data
    command: ["label-studio",
              "--log-level", "DEBUG"]

volumes:
  pgdata:
    driver: local
  redisdata:
    driver: local
  lsdata:
    driver: local

Redis

Redis runs, and has tasks data, I tested the following formats

labelstudio:ls-task-1 '{"text":"some text"}'
labelstudio:ls-task-2 '{"id":0, "data": {"texte": "some text"}} 


ls-task-1 '{"text":"some text"}'
ls-task-2 '{"id":0, "data": {"texte": "some text"}}

Label Studio

labeling interface config

<View>
  <Text name="text" value="$text"/>
  <View style="box-shadow: 2px 2px 5px #999; padding: 20px; margin-top: 2em; border-radius: 5px;">
    <Header value="Some themes"/>
    <Choices name="theme" toName="text" choice="multiple" showInLine="true">
      <Choice value="somevalue">Some Choice</Choice>
      <Choice value="othervalue">Other Choice/Choice>
    </Choices>
  </View>
</View>
<!-- {
  "data": {"text": "Some Text"}
} -->

Cloud Storage config

Storage Type : Redis
Path : labelstudio
Password :
Host : redis
port : 6379

How it fails

As a data source

I see in the logs label studio connecting to redis but it always shows 0 tasks

label studio logs

[2024-07-11 08:46:24,606] [urllib3.connectionpool::_make_request::474] [DEBUG] https://o227124.ingest.sentry.io:443 "POST /api/5820521/envelope/ HTTP/1.1" 200 2
[2024-07-11 08:46:43,954] [io_storages.base_models::sync::454] [INFO] Start syncing storage RedisImportStorage object (1)
[2024-07-11 08:46:43,964] [projects.models::_update_tasks_states::422] [INFO] Starting _update_tasks_states with params: Project risque-juridique (id=1) maximum_annotations 1 and percentage 100
[2024-07-11 08:46:43,971] [urllib3.connectionpool::_new_conn::1019] [DEBUG] Starting new HTTPS connection (1): tele.labelstud.io:443
[2024-07-11 08:46:43,971] [django.server::log_message::161] [INFO] "POST /api/storages/redis/1/sync HTTP/1.1" 200 618
[2024-07-11 08:46:43,971] [django.server::log_message::161] [INFO] "POST /api/storages/redis/1/sync HTTP/1.1" 200 618
[2024-07-11 08:46:44,454] [urllib3.connectionpool::_make_request::474] [DEBUG] https://tele.labelstud.io:443 "POST / HTTP/1.1" 200 0
[2024-07-11 08:47:24,609] [urllib3.connectionpool::_make_request::474] [DEBUG] https://o227124.ingest.sentry.io:443 "POST /api/5820521/envelope/ HTTP/1.1" 200 2

redis logs

11 Jul 2024 08:46:43.953 - Accepted 192.168.48.6:42558
11 Jul 2024 08:46:43.954 - Client closed connection
11 Jul 2024 08:46:43.963 - Accepted 192.168.48.6:42564
11 Jul 2024 08:46:43.964 - Client closed connection
11 Jul 2024 08:46:45.526 - Accepted 127.0.0.1:57774
11 Jul 2024 08:46:45.526 - Client closed connection

As a data target

Label studio shows

Runtime error
Validation error

    validate_connection is not implemented

Version: 1.12.1

Label studio logs

[2024-07-11 08:51:29,742] [core.utils.common::custom_exception_handler::89] [ERROR] c9a7909a-c865-4f8a-813b-3a4e7918d9a5 [ErrorDetail(string='validate_connection is not implemented', code='invalid')]
Traceback (most recent call last):
  File "/label-studio/label_studio/io_storages/api.py", line 82, in perform_create
    instance.validate_connection()
  File "/label-studio/label_studio/io_storages/base_models.py", line 218, in validate_connection
    raise NotImplementedError('validate_connection is not implemented')
NotImplementedError: validate_connection is not implemented

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/rest_framework/generics.py", line 242, in post
    return self.create(request, *args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/rest_framework/mixins.py", line 19, in create
    self.perform_create(serializer)
  File "/label-studio/label_studio/io_storages/api.py", line 84, in perform_create
    raise ValidationError(exc)
rest_framework.exceptions.ValidationError: [ErrorDetail(string='validate_connection is not implemented', code='invalid')]
[2024-07-11 08:51:29,748] [django.request::log_response::224] [WARNING] Bad Request: /api/storages/export/redis
[2024-07-11 08:51:29,748] [django.request::log_response::224] [WARNING] Bad Request: /api/storages/export/redis
[2024-07-11 08:51:29,748] [urllib3.connectionpool::_new_conn::1019] [DEBUG] Starting new HTTPS connection (1): tele.labelstud.io:443
[2024-07-11 08:51:29,749] [django.server::log_message::161] [WARNING] "POST /api/storages/export/redis?project=1 HTTP/1.1" 400 210
[2024-07-11 08:51:29,749] [django.server::log_message::161] [WARNING] "POST /api/storages/export/redis?project=1 HTTP/1.1" 400 210