feat: added sentinel sink

sink/redis-sentinel/README.md

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+## Sink for Redis Sentinel
+
+1. Create a `.env` from `.env.example`
+2. The HOST_IP value must be your host ip, so that redis inside the containers can connect to it and switch over as needed.
+
+To test Sentinel is working correctly
+
+1. Run
+
+```
+docker exec -it sentinel-2 redis-cli -p 26379 sentinel get-master-addr-by-name mymaster
+```
+
+2. Run
+
+```
+docker-compose -f docker-compose.sentinel.yml stop redis-master
+```
+
+3. Again running step 1 should show the other replica port.

sink/redis-sentinel/config/sentinel/sentinel.conf

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+port 26379
+sentinel resolve-hostnames yes
+sentinel monitor mymaster 172.30.0.2 6379 2
+sentinel down-after-milliseconds mymaster 5000
+sentinel failover-timeout mymaster 60000
+
+# Generated by CONFIG REWRITE
+latency-tracking-info-percentiles 50 99 99.9
+dir "/data"
+user default on nopass sanitize-payload ~* &* +@all
+sentinel myid 19849dc6cc6e756dfb0db909c44f0a2f8f5bcbe3
+sentinel config-epoch mymaster 0
+sentinel leader-epoch mymaster 0
+sentinel current-epoch 0
+
+sentinel known-replica mymaster 172.30.0.3 6379
+
+sentinel known-replica mymaster 172.30.0.4 6379

sink/redis-sentinel/docker-compose.sentinel.yml

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+version: "3.8"
+
+services:
+  redis-master:
+    image: redis:latest
+    container_name: redis-master
+    hostname: redis-master
+    ports:
+      - "6380:6379"
+    volumes:
+      - ./data/master:/data
+    command:
+      [
+        "redis-server",
+        "--appendonly",
+        "yes",
+        "--repl-diskless-load",
+        "on-empty-db",
+        "--replica-announce-ip",
+        "${HOST_IP}",
+        "--replica-announce-port",
+        "6380",
+        "--protected-mode",
+        "no",
+      ]
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.3
+
+  redis-slave-1:
+    image: redis:latest
+    container_name: redis-slave-1
+    hostname: redis-slave-1
+    depends_on:
+      - redis-master
+    ports:
+      - "6381:6379"
+    volumes:
+      - ./data/slave1:/data
+    command:
+      [
+        "redis-server",
+        "--appendonly",
+        "yes",
+        "--replicaof",
+        "redis-master",
+        "6379",
+        "--repl-diskless-load",
+        "on-empty-db",
+        "--replica-announce-ip",
+        "${HOST_IP}",
+        "--replica-announce-port",
+        "6381",
+        "--protected-mode",
+        "no",
+      ]
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.4
+
+  redis-slave-2:
+    image: redis:latest
+    container_name: redis-slave-2
+    hostname: redis-slave-2
+    depends_on:
+      - redis-master
+    ports:
+      - "6382:6379"
+    volumes:
+      - ./data/slave2:/data
+    command:
+      [
+        "redis-server",
+        "--appendonly",
+        "yes",
+        "--replicaof",
+        "redis-master",
+        "6379",
+        "--repl-diskless-load",
+        "on-empty-db",
+        "--replica-announce-ip",
+        "${HOST_IP}",
+        "--replica-announce-port",
+        "6382",
+        "--protected-mode",
+        "no",
+      ]
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.5
+
+  sentinel-1:
+    image: redis:latest
+    container_name: sentinel-1
+    hostname: sentinel-1
+    depends_on:
+      - redis-master
+    ports:
+      - "26379:26379"
+    command: >
+      sh -c 'echo "bind 0.0.0.0" > /etc/sentinel.conf &&
+            echo "sentinel monitor mymaster ${HOST_IP} 6380 2" >> /etc/sentinel.conf &&
+            echo "sentinel resolve-hostnames yes" >> /etc/sentinel.conf &&
+            echo "sentinel down-after-milliseconds mymaster 10000" >> /etc/sentinel.conf &&
+            echo "sentinel failover-timeout mymaster 10000" >> /etc/sentinel.conf &&
+            echo "sentinel parallel-syncs mymaster 1" >> /etc/sentinel.conf &&
+            redis-sentinel /etc/sentinel.conf'
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.6
+
+  sentinel-2:
+    image: redis:latest
+    container_name: sentinel-2
+    hostname: sentinel-2
+    depends_on:
+      - redis-master
+    ports:
+      - "26380:26379"
+    command: >
+      sh -c 'echo "bind 0.0.0.0" > /etc/sentinel.conf &&
+            echo "sentinel monitor mymaster ${HOST_IP} 6380 2" >> /etc/sentinel.conf &&
+            echo "sentinel resolve-hostnames yes" >> /etc/sentinel.conf &&
+            echo "sentinel down-after-milliseconds mymaster 10000" >> /etc/sentinel.conf &&
+            echo "sentinel failover-timeout mymaster 10000" >> /etc/sentinel.conf &&
+            echo "sentinel parallel-syncs mymaster 1" >> /etc/sentinel.conf &&
+            redis-sentinel /etc/sentinel.conf'
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.7
+
+  sentinel-3:
+    image: redis:latest
+    container_name: sentinel-3
+    hostname: sentinel-3
+    depends_on:
+      - redis-master
+    ports:
+      - "26381:26379"
+    command: >
+      sh -c 'echo "bind 0.0.0.0" > /etc/sentinel.conf &&
+            echo "sentinel monitor mymaster ${HOST_IP} 6380 2" >> /etc/sentinel.conf &&
+            echo "sentinel resolve-hostnames yes" >> /etc/sentinel.conf &&
+            echo "sentinel down-after-milliseconds mymaster 10000" >> /etc/sentinel.conf &&
+            echo "sentinel failover-timeout mymaster 10000" >> /etc/sentinel.conf &&
+            echo "sentinel parallel-syncs mymaster 1" >> /etc/sentinel.conf &&
+            redis-sentinel /etc/sentinel.conf'
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.8
+
+  redisinsight:
+    image: redis/redisinsight:latest
+    container_name: redisinsight
+    ports:
+      - "5540:5540"
+    networks:
+      redis-net:
+        ipv4_address: 172.21.0.9
+
+networks:
+  redis-net:
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.21.0.0/16