Closes #2665

Code Changes

• Update cache.py client with optional username arg
• Fix unexpected default Redis password: testpassword
• Fix support for unauthenticated Redis servers

Steps to Confirm

I used my local Docker setup to test the following configs:

• Redis server with no auth:
  • Fides with no auth (neither redis.password nor redis.user) connects
  • Fides with redis.password does not connect
  • Fides with redis.password and redis.user does not connect
• Redis server with just password auth (e.g. redis-server --requirepass <password>):
  • Fides with correct redis.password and no redis.user connects
  • Fides with correct redis.password and incorrect redis.user does not connect
  • Fides with incorrect redis.password does not connect
  • Fides with no auth (neither redis.password nor redis.user) does not connect
• Redis server with an ACL (e.g. redis-server <path/to/redis.conf>):
  • Fides with correct redis.password and redis.user connects
  • Fides with no auth (neither redis.password nor redis.user) does not connect
  • Fides with incorrect redis.password and redis.user does not connect

For testing the Redis server with an ACL, I created this file at ./docker/redis/redis.conf:

user redisadmin on ~* +@all >redispassword

I then modified docker-compose.yml to configure the redis service as:

  redis:
    image: "redis:6.2.5-alpine"
    command: redis-server /usr/local/etc/redis/redis.conf
    expose:
      - 6379
    ports:
      - "0.0.0.0:6379:6379"
    volumes:
      - type: bind
        source: ./docker/redis
        target: /usr/local/etc/redis
        read_only: False

And updated the .fides/fides.toml settings like:

[redis]
host = "redis"
user = "redisadmin"
password = "redispassword"
port = 6379
charset = "utf8"
default_ttl_seconds = 604800
db_index = 0
ssl = false
ssl_cert_reqs = "required"

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Documentation:
  • documentation complete, PR opened in fidesdocs
  • documentation issue created in fidesdocs
• Issue Requirements are Met
• Relevant Follow-Up Issues Created
  • Added: Add automated integration tests for all supported Redis server authentication options #2673
• Update CHANGELOG.md