Swagger not working (cors) in demo deploy

[SebastianThorn]

Hi,

The swagger container can not access the openapi.json-file due to cors

I'm using the standard docker-compose.yaml and docker compose up

Error message from Swagger:

Errors
Hide

Fetch error
Failed to fetch http://localhost:8080/api/openapi.json
Fetch error
Possible cross-origin (CORS) issue? The URL origin (http://localhost:8080) does not match the page (http://localhost:8081). Check the server returns the correct 'Access-Control-Allow-*' headers.

Request with curl:

$ curl -v -s http://localhost:8080/api/openapi.json > /dev/null
*   Trying 127.0.0.1:8080...
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET /api/openapi.json HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.81.0
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 200
< Cache-Control: private
< Set-Cookie: JSESSIONID=715DCA7790998002996D7447CAE9F0BC; Path=/; Secure; HttpOnly; SameSite=Strict
< Strict-Transport-Security: max-age=31536000; includeSubDomains
< Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://www.google.com https://www.google-analytics.com https://www.gstatic.com; style-src 'self' 'unsafe-inline'; img-src 'self'; font-src 'self';
< X-XSS-Protection: 1; mode=block
< X-Permitted-Cross-Domain-Policies: none
< Feature-Policy: camera 'none'; fullscreen 'self'; geolocation *; microphone 'self'
< X-Frame-Options: SAMEORIGIN
< X-Content-Type-Options: nosniff
< Referrer-Policy: no-referrer
< Permissions-Policy: geolocation=(self)
< Content-Type: application/json
< Transfer-Encoding: chunked
< Date: Thu, 05 Sep 2024 13:04:25 GMT
<
{ [72894 bytes data]
* Connection #0 to host localhost left intact

docker-compose.yaml

---

services:

  zoo:
    image: docker.io/zookeeper:3.9.2-jre-17
    restart: unless-stopped
    environment:
      - ZOO_4LW_COMMANDS_WHITELIST=mntr,conf,ruok
    volumes:
      - zookeeper_data:/data
      - zookeeper_datalog:/datalog

  solr:
    image: docker.io/solr:9.5.0
    restart: unless-stopped
    ports:
      - "8983:8983"
    environment:
      SOLR_HEAP: 2g
      ZK_HOST: zoo:2181
    command: -c
    volumes:
      - solr_data:/var/solr

  clamd:
    image: docker.io/clamav/clamav:1.2.2
    restart: unless-stopped
    volumes:
      - clam_data:/var/lib/clamav
      - roda_data:/roda/data/

  siegfried:
    image: ghcr.io/keeps/siegfried:v1.11.0
    restart: unless-stopped
    environment:
      SIEGFRIED_HOST: 0.0.0.0
      SIEGFRIED_PORT: 5138
    volumes:
      - siegfried_data:/root/siegfried/
      - roda_data:/roda/data/

  swagger:
    image: docker.io/swaggerapi/swagger-ui:v5.13.0
    restart: on-failure
    ports:
      - "8081:8080"
    environment:
      - URL=http://localhost:8080/api/openapi.json
      - DOC_EXPANSION=none
      - VALIDATOR_URL=none

  roda:
    image: ghcr.io/keeps/roda:latest
    restart: unless-stopped
    ports:
      - "8080:8080"
    depends_on:
      - solr
      - clamd
      - siegfried
    volumes:
      - roda_data:/roda/data/
    environment:
      # Solr Cloud configuration
      - RODA_CORE_SOLR_TYPE=CLOUD
      - RODA_CORE_SOLR_CLOUD_URLS=zoo:2181
      - SOLR_NUM_SHARDS=4
      - SOLR_REPLICATION_FACTOR=1
      # Base plugin services configuration
      - SIEGFRIED_SERVER_URL=http://siegfried:5138
      - CLAMD_TCPADDR=clamd
      - CLAMD_TCPSOCKET=3310

volumes:
  zookeeper_data:
  zookeeper_datalog:
  solr_data:
  clam_data:
  siegfried_data:
  roda_data:

All containers seem to be working:

$ docker compose ps
NAME                IMAGE                                     COMMAND                  SERVICE     CREATED        STATUS                  PORTS
slask-clamd-1       docker.io/clamav/clamav:1.2.2             "/init"                  clamd       27 hours ago   Up 27 hours (healthy)   3310/tcp, 7357/tcp
slask-roda-1        ghcr.io/keeps/roda:latest                 "/docker-entrypoint.…"   roda        27 hours ago   Up 27 hours             0.0.0.0:8080->8080/tcp, :::8080->8080/tcp
slask-siegfried-1   ghcr.io/keeps/siegfried:v1.11.0           "/bin/sh -c 'sf -ser…"   siegfried   27 hours ago   Up 27 hours             5138/tcp
slask-solr-1        docker.io/solr:9.5.0                      "docker-entrypoint.s…"   solr        27 hours ago   Up 27 hours             0.0.0.0:8983->8983/tcp, :::8983->8983/tcp
slask-swagger-1     docker.io/swaggerapi/swagger-ui:v5.13.0   "/docker-entrypoint.…"   swagger     27 hours ago   Up 27 hours             80/tcp, 0.0.0.0:8081->8080/tcp, :::8081->8080/tcp
slask-zoo-1         docker.io/zookeeper:3.9.2-jre-17          "/docker-entrypoint.…"   zoo         27 hours ago   Up 27 hours             2181/tcp, 2888/tcp, 3888/tcp, 8080/tcp

[luis100]

Best way would be to use a HTTP router like traefik or nginx to route all services through the same domain and port. Alternatively, you would need to add CORS header, for which an HTTP router would still be the best approach.

[SebastianThorn]

Best way would be to use a HTTP router like traefik or nginx to route all services through the same domain and port. Alternatively, you would need to add CORS header, for which an HTTP router would still be the best approach.

Yes, I know how to fix this on my own, but would it not be good idea if the Swagger container worked out-of-the-box?

Right now the instructions at https://github.com/keeps/roda/blob/master/deploys/standalone/README.md are not correct.

REST-API documentation will be at http://localhost:8081/ (same passwords as in RODA)

[luis100]

Changing title of issue to reflect that the request is actually to incorporate these changes in the demo/example deployment available on the github project.

[SebastianThorn]

I played around with this and it seems to work

@carlosjepard

---

services:

  zoo:
    image: docker.io/zookeeper:3.9.2-jre-17
    restart: unless-stopped
    environment:
      - ZOO_4LW_COMMANDS_WHITELIST=mntr,conf,ruok
    volumes:
      - zookeeper_data:/data
      - zookeeper_datalog:/datalog

  solr:
    image: docker.io/solr:9.5.0
    restart: unless-stopped
    ports:
      - "8983:8983"
    environment:
      SOLR_HEAP: 2g
      ZK_HOST: zoo:2181
    command: -c
    volumes:
      - solr_data:/var/solr

  clamd:
    image: docker.io/clamav/clamav:1.2.2
    restart: unless-stopped
    volumes:
      - clam_data:/var/lib/clamav
      - roda_data:/roda/data/

  siegfried:
    image: ghcr.io/keeps/siegfried:v1.11.0
    restart: unless-stopped
    environment:
      SIEGFRIED_HOST: 0.0.0.0
      SIEGFRIED_PORT: 5138
    volumes:
      - siegfried_data:/root/siegfried/
      - roda_data:/roda/data/

  swagger:
    image: docker.io/swaggerapi/swagger-ui:v5.13.0
    restart: on-failure
    ports:
      - "8081:8080"
    environment:
      - URL=http://localhost:8082/api/openapi.json
      - DOC_EXPANSION=none
      - VALIDATOR_URL=none

  roda:
    image: ghcr.io/keeps/roda:latest
    restart: unless-stopped
    ports:
      - "8080:8080"
    depends_on:
      - solr
      - clamd
      - siegfried
    volumes:
      - roda_data:/roda/data/
    environment:
      # Solr Cloud configuration
      - RODA_CORE_SOLR_TYPE=CLOUD
      - RODA_CORE_SOLR_CLOUD_URLS=zoo:2181
      - SOLR_NUM_SHARDS=4
      - SOLR_REPLICATION_FACTOR=1
      # Base plugin services configuration
      - SIEGFRIED_SERVER_URL=http://siegfried:5138
      - CLAMD_TCPADDR=clamd
      - CLAMD_TCPSOCKET=3310

  nginx:
    image: nginx:stable-alpine
    ports:
      - "8082:80"
    configs:
      - source: nginx.conf
        target: /etc/nginx/nginx.conf

volumes:
  zookeeper_data:
  zookeeper_datalog:
  solr_data:
  clam_data:
  siegfried_data:
  roda_data:

configs:
  nginx.conf:
    content: |
      user  nginx;
      worker_processes  auto;

      error_log  /var/log/nginx/error.log notice;
      pid        /var/run/nginx.pid;

      events {
          worker_connections  1024;
      }

      http {
          include       /etc/nginx/mime.types;
          default_type  application/octet-stream;

          log_format  main  '$$remote_addr - $$remote_user [$$time_local] "$$request" '
                            '$$status $$body_bytes_sent "$$http_referer" '
                            '"$$http_user_agent" "$$http_x_forwarded_for"';

          access_log  /var/log/nginx/access.log  main;

          sendfile        on;

          keepalive_timeout  65;

        server {
            listen       80;
            server_name  localhost;

            location / {
                proxy_set_header Host $$host;
                add_header Access-Control-Allow-Origin *;
                proxy_set_header X-Real-IP $$remote_addr;
                proxy_pass http://roda:8080;
            }

            error_page   500 502 503 504  /50x.html;
            location = /50x.html {
                root   /usr/share/nginx/html;
            }
        }
      }