feat: add fulltextsearch using elasticsearch

.env.sample

@@ -62,3 +62,6 @@ DEFAULT_QUOTA="10 GB"
 # AUTHENTIK_DOMAIN=authentik.example.com
 # SECRET_AUTHENTIK_SECRET_VERSION=v1
 # SECRET_AUTHENTIK_ID_VERSION=v1
+
+#COMPOSE_FILE="$COMPOSE_FILE:compose.elasticsearch.yml"
+#SECRET_ELASTICSEARCH_PASSWORD_VERSION=v1

README.md

@@ -244,3 +244,47 @@ docker exec -u www-data $(docker ps -f name=foo_com_app -q) ./occ preview:pre-ge
 ```
 
 This app will improve performance of image browsing at the cost of storage space.
+
+## Fulltextsearch with elasticsearch
+
+1. To start you need to install these apps:
+- [fulltextsearch](https://github.com/nextcloud/fulltextsearch)
+- [fulltextsearch_elasticsearch](https://github.com/nextcloud/fulltextsearch_elasticsearch)
+- [files_fulltextsearch](https://github.com/nextcloud/files_fulltextsearch)
+
+2. To enable the elasticsearch index uncomment the following lines in your env file:
+```
+#COMPOSE_FILE="$COMPOSE_FILE:compose.elasticsearch.yml"
+#SECRET_ELASTICSEARCH_PASSWORD_VERSION=v1
+```
+
+3. Next you need to generate the secret for elasticsearch:
+```bash
+abra app secret generate <domain> elasticsearch_password v1
+```
+
+You need to write down the password, since you need this later!
+
+4. Now you can deploy your app:
+```bash
+abra app deploy <domain>
+```
+
+5. After the deployment finished go to the settings page for fulltext and configure it:
+
+- Set `Search Platform` to `Elasticsearch`
+- Set `Address of the Servlet` to `http://elastic:<password>@elasticsearch:9200/`
+- Set `Index` to a random index name
+- Select what should be index
+
+6. Now test if nextcloud can connect to elasticsearch:
+```
+abra app cmd <domain> app run_occ '"fulltextsearch:test"'
+```
+
+6. If the connection was successfull populate the index with data:
+```
+abra app cmd <domain> app run_occ '"fulltextsearch:index"'
+```
+
+7. Check if the search works correctly by searching for a word which occurs in a file on your nextcloud

compose.elasticsearch.yaml

@@ -0,0 +1,49 @@
+version: "3.8"
+
+services:
+  elasticsearch:
+    image: "docker.elastic.co/elasticsearch/elasticsearch:8.11.3"
+    environment:
+      - cluster.name=docker-cluster
+      - bootstrap.memory_lock=true
+      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
+      - discovery.type=single-node
+      # Disable authentication and ssl completely
+      # - xpack.security.enabled=false
+      # Use this to enable Basic Authentication:
+      - xpack.security.enabled=true
+      - xpack.security.http.ssl.enabled=false
+      - ELASTIC_PASSWORD_FILE=/var/run/secrets/elasticsearch_password
+    ulimits:
+      memlock:
+        soft: -1
+        hard: -1
+    volumes:
+      - elasticsearch:/usr/share/elasticsearch/data
+    networks:
+      - internal
+    secrets:
+      - source: elasticsearch_password
+        uid: "1000"
+        gid: "1000"
+        mode: 0600
+
+  searchindexer:
+    image: nextcloud:27.1.3-fpm
+    volumes:
+      - nextcloud:/var/www/html/
+      - nextapps:/var/www/html/custom_apps:cached
+      - nextdata:/var/www/html/data:cached
+      - nextconfig:/var/www/html/config:cached
+      - ${EXTRA_VOLUME}
+    networks:
+      - internal
+    entrypoint: su -p www-data -s /bin/sh -c '/var/www/html/occ fulltextsearch:live'
+
+secrets:
+  elasticsearch_password:
+    external: true
+    name: ${STACK_NAME}_elasticsearch_password_${SECRET_ELASTICSEARCH_PASSWORD_VERSION}
+
+volumes:
+  elasticsearch: