Elasticsearch-service

This service runs on port 8006 and is used with elasticsearch.

---

This service is responsible for searching through names:

• Endpoint /newuser makes a GET request to a userservice and must be connected to the service that provides the user information. The user information is saved in the elasticsearch-cluster.

Let's say we are provided with three users:

[
    {
        "name": "Olle",
        "userID": "11111"
    },
    {
        "name": "Ulla",
        "userID": "22222"
    },
    {
        "name": "Ella",
        "userID": "33333"
    }
]
    

• Endpoint /search takes a requestparam and searches for names THAT STARTS WITH the value of the requestparam.
  /search?query=lla would not find any because no name starts with "lla".

• Endpoint /search/contains takes a requestparam and searches for names CONTAINING the value of the requestparam.
  /search/contains?query=lla would find "Ulla" and "Ella" because they both contain "lla".

Environment variables

spring.elasticsearch.uris=${ELASTICSEARCH_URI}

• ELASTICSEARCH_URI is the location of the elasticsearch cluster. This is where the data will be saved and requested from by the endpoints.

elasticsearch:
  image: docker.elastic.co/elasticsearch/elasticsearch:8.13.0
  container_name: elasticsearch2
  restart: on-failure
  ports:
    - "9200:9200"
  volumes:
    - elastic_data:/usr/share/elasticsearch/data/
  environment:
    - xpack.security.enabled=false
    - discovery.type=single-node

When running as a service with docker compose like the code above, the variable should be set to http://elasticsearch:9200 since the servicename is elasticsearch and the port of the service is 9200.

---

get.users.from.uri=${GET_USERS}

• GET_USERS is the location where you will get the userdata from.

usersapp:
  image: ghcr.io/chatgut/userservice:1.0
  restart: on-failure
  container_name: userservice
  ports:
    - "8002:8002"
  depends_on:
    - dbUsers
  environment:
    DB_URL: jdbc:mysql://dbUsers:3306/userService
    DB_USER: developer
    DB_PASSWORD: password

When running the userservice with docker compose like the code above, the variable should be set to http://usersapp:8002/users/all since the servicename is usersapp and the port of the service is 8002 and this particular user app has an endpoint called /users/all that returns a list of users.

So with the two services above...

An implementation of this application as a service would look like this:

  search-service:
    image: search:1
    ports:
      - "8006:8080"
    environment:
      GET_USERS: http://usersapp:8002/users/all
      ELASTICSEARCH_URI: http://elasticsearch:9200
    restart: on-failure

How to run

Clone the repository and run the following command: docker compose up to run with the examples above.