nginx.conf.template

# Based on: https://raw.githubusercontent.com/cloudfoundry/nginx-buildpack/v1.0.3/fixtures/mainline/nginx.conf
# Only difference between test and prouction configuration is the use of 2 iiif_image hosts

worker_processes auto;
worker_rlimit_nofile 4096;
daemon off;

error_log stderr warn;

events {
    use epoll;
    worker_connections 4096;
    multi_accept on;
}

http {
    charset utf-8;
    default_type application/octet-stream;
    include mime.types;
    sendfile on;
    # EA-2236: Disable access logs
    access_log off;

    tcp_nodelay on;
    tcp_nopush on;
    keepalive_timeout 90s;
    keepalive_requests 100;
    types_hash_max_size 2048;

    upstream iiif_image {
        keepalive 15;
        # Definition of image server host.
        server ${PROXY_IMAGE_HOST};
        # HACK: we can add an additional host here, but need to set that variable to "server <hostname>;"
        ${PROXY_IMAGE_HOST2}
    }

    upstream iiif_presentation_manifest {
        keepalive 25;
        server ${MANIFEST_API_HOST};
    }

    upstream iiif_presentation_fulltext {
        keepalive 25;
        server ${FULLTEXT_API_HOST};
    }

    include nginx.conf.d/http-server-*.conf;
    server {
        listen 80;
        root public;
        index index.html;

        add_header 'Access-Control-Allow-Origin' '*' always;

        resolver ${RESOLVER_SETTINGS};

        location / {
          include nginx.conf.d/location-cors.conf;
        }

        # Redirect root
        location = / {
            return 302 ${ROOT_REDIRECT_URL};
        }

        # Used by Kubernetes health checks
        location /nginx-health {
            default_type application/json;
            return 200 '{"status":"healthy"}';
        }

        # IIIF Image (uses servers in upstream section)
        location ~ ^/image/([A-Z0-9]+)/([^/]+)/([^/]+)/(.*) {
            # For production we need to specifically set a proper public server name (see also EA-3444)
            proxy_set_header Host ${SERVER_NAME};
            proxy_pass http://iiif_image/records/$1/representations/$2/versions/$3/files/$4;
        }

        location ~ ^/(records|data-providers)/(.*) {
            # For production we need to specifically set a proper public server name (see also EA-3444)
            proxy_set_header Host ${SERVER_NAME};
            proxy_pass http://iiif_image/$1/$2;
        }

        # IIIF Presentation: Manifest
        location ~ ^/presentation/(.*)/manifest {
            gzip_types *;
            proxy_set_header Host ${MANIFEST_API_HOST};

            if ($arg_wskey != "") {
                proxy_pass http://iiif_presentation_manifest/presentation/$1/manifest$is_args$args;
            }
            if ($arg_wskey = "") {
                proxy_pass http://iiif_presentation_manifest/presentation/$1/manifest?wskey=${API_KEY}&$args;
            }
        }

        # IIIF Presentation: Fulltext within-issue search
        location ~ ^/presentation/(.*)/search {
            gzip_types *;
            # handle whitespaces in search query (see EA-2276)
            rewrite  ^/presentation/(.*)/search$ /presentation/$1/search break;
            proxy_set_header Host ${FULLTEXT_API_HOST};
            proxy_pass http://iiif_presentation_fulltext;
        }

        # IIIF Presentation: Fulltext summary
        location ~ ^/presentation/(.*)/annopage$ {
            gzip_types *;
            proxy_set_header Host ${FULLTEXT_API_HOST};
            proxy_pass http://iiif_presentation_fulltext/presentation/$1/annopage$is_args$args;
        }

        # IIIF Presentation: Fulltext annotation and annopages
        location ~ ^/presentation/(.*)/(anno|annopage)/([^/]*)$ {
            gzip_types *;
            proxy_set_header Host ${FULLTEXT_API_HOST};
            proxy_pass http://iiif_presentation_fulltext/presentation/$1/$2/$3$is_args$args;
        }
    }
}