feat: ElasticSearch backend (#6903)

* (do not merge) search test branch

* perf

* fix up search pagination

* more parity and perf work

* expand what parity does

* fix author query

* approach parity even without explicit parity enabled

* remove old parity code

* fix shear

* fix

* fmt

docker-compose.yml

@@ -32,6 +32,102 @@ services:
       interval: 3s
       timeout: 5s
       retries: 3
+  elasticsearch0:
+    image: docker.elastic.co/elasticsearch/elasticsearch:9.4.4
+    container_name: labrinth-elasticsearch0
+    restart: on-failure
+    networks:
+      - elasticsearch-mesh
+    ports:
+      - '127.0.0.1:9200:9200'
+    volumes:
+      - elasticsearch0-data:/usr/share/elasticsearch/data
+    environment:
+      node.name: elasticsearch0
+      cluster.name: labrinth-elasticsearch
+      discovery.seed_hosts: elasticsearch0,elasticsearch1,elasticsearch2
+      cluster.initial_master_nodes: elasticsearch0,elasticsearch1,elasticsearch2
+      bootstrap.memory_lock: 'true'
+      xpack.security.enabled: 'false'
+      xpack.security.enrollment.enabled: 'false'
+      ES_JAVA_OPTS: -Xms512m -Xmx512m
+    ulimits:
+      memlock:
+        soft: -1
+        hard: -1
+    healthcheck:
+      test:
+        [
+          'CMD-SHELL',
+          'curl --fail http://localhost:9200/_cluster/health?wait_for_status=yellow',
+        ]
+      interval: 5s
+      timeout: 5s
+      retries: 30
+  elasticsearch1:
+    image: docker.elastic.co/elasticsearch/elasticsearch:9.4.4
+    container_name: labrinth-elasticsearch1
+    restart: on-failure
+    networks:
+      - elasticsearch-mesh
+    ports:
+      - '127.0.0.1:9201:9200'
+    volumes:
+      - elasticsearch1-data:/usr/share/elasticsearch/data
+    environment:
+      node.name: elasticsearch1
+      cluster.name: labrinth-elasticsearch
+      discovery.seed_hosts: elasticsearch0,elasticsearch1,elasticsearch2
+      cluster.initial_master_nodes: elasticsearch0,elasticsearch1,elasticsearch2
+      bootstrap.memory_lock: 'true'
+      xpack.security.enabled: 'false'
+      xpack.security.enrollment.enabled: 'false'
+      ES_JAVA_OPTS: -Xms512m -Xmx512m
+    ulimits:
+      memlock:
+        soft: -1
+        hard: -1
+    healthcheck:
+      test:
+        [
+          'CMD-SHELL',
+          'curl --fail http://localhost:9200/_cluster/health?wait_for_status=yellow',
+        ]
+      interval: 5s
+      timeout: 5s
+      retries: 30
+  elasticsearch2:
+    image: docker.elastic.co/elasticsearch/elasticsearch:9.4.4
+    container_name: labrinth-elasticsearch2
+    restart: on-failure
+    networks:
+      - elasticsearch-mesh
+    ports:
+      - '127.0.0.1:9202:9200'
+    volumes:
+      - elasticsearch2-data:/usr/share/elasticsearch/data
+    environment:
+      node.name: elasticsearch2
+      cluster.name: labrinth-elasticsearch
+      discovery.seed_hosts: elasticsearch0,elasticsearch1,elasticsearch2
+      cluster.initial_master_nodes: elasticsearch0,elasticsearch1,elasticsearch2
+      bootstrap.memory_lock: 'true'
+      xpack.security.enabled: 'false'
+      xpack.security.enrollment.enabled: 'false'
+      ES_JAVA_OPTS: -Xms512m -Xmx512m
+    ulimits:
+      memlock:
+        soft: -1
+        hard: -1
+    healthcheck:
+      test:
+        [
+          'CMD-SHELL',
+          'curl --fail http://localhost:9200/_cluster/health?wait_for_status=yellow',
+        ]
+      interval: 5s
+      timeout: 5s
+      retries: 30
   meilisearch0:
     image: getmeili/meilisearch:v1.12.0
     container_name: labrinth-meilisearch0
@@ -398,7 +494,7 @@ services:
     depends_on:
       postgres_db:
         condition: service_healthy
-      meilisearch:
+      meilisearch0:
         condition: service_healthy
       elasticsearch0:
         condition: service_healthy
@@ -481,6 +577,8 @@ services:
     volumes:
       - ./apps/labrinth/nginx/meili-lb.conf:/etc/nginx/conf.d/default.conf:ro
 networks:
+  elasticsearch-mesh:
+    driver: bridge
   meilisearch-mesh:
     driver: bridge
   redis-cluster-mesh: