server {
    listen       80;
    server_name  observe-front.cestong.com.cn ui.test.obs.js.sgcc.com.cn ui.obs.js.sgcc.com.cn;

    location / {
        if ($request_uri ~* .*[.](js|css|map|jpg|png|svg|ico)$) {
            # 除非浏览器选择禁用缓存，否则在max-age区间内，不会重新发起请求，即使服务器上的数据已经变化
            add_header Cache-Control "public, max-age=2592000";
            # 浏览器依然会缓存，只是浏览器在使用缓存前需要向服务端确认缓存是否有效(请求头携带If-None-Match, If-Modified-Since)，有效则304, 否则返回最新数据;
            # 如果浏览器选择禁用缓存(请求头中带Cache-Control: no-cache, 服务器会返回最新数据)
            # add_header Cache-Control "no-cache";
        }

        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    location /col {
        add_header 'Access-Control-Allow-Origin' $allow_origin;
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, PUT, POST, DELETE, PATCH, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Referer,Referrer-Policy';
        add_header 'Access-Control-Max-Age' '1728000';
        if ($request_method = 'OPTIONS') {
                return 204;
        }
        proxy_pass  http://otel-collector-opentelemetry-collector.observe.svc.cluster.local:4318;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        rewrite ^/col/(.*)$ /$1 break;
    }

    location /re/api/v1/metrics {
        return 404;
    }

    location /re {
        if ($request_method = 'OPTIONS') {
                return 204;
        }
        proxy_pass http://ob-server.observe.svc.cluster.local;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        rewrite ^/re/(.*)$ /$1 break;
    }

    location /core {
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        add_header 'Access-Control-Allow-Methods' 'GET, PUT, POST, DELETE, PATCH, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Referer,Referrer-Policy, Authorization' always;
        add_header 'Access-Control-Max-Age' '1728000' always;
        if ($request_method = 'OPTIONS') {
                return 204;
        }
        proxy_pass http://ob-core.observe.svc.cluster.local;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        rewrite ^/core/(.*)$ /$1 break;
    }

    location /api/v1/ws {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header Cache-Control private;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
        if ($request_method = 'OPTIONS') {
                return 204;
        }
        proxy_pass http://ob-server.observe.svc.cluster.local;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

#    location /app {
#        if ($request_method = 'OPTIONS') {
#                return 204;
#        }
#        proxy_pass  http://deepflow-app.deepflow.svc.cluster.local:20418;
#        proxy_set_header X-Real-IP $remote_addr;
#        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
#        proxy_set_header Host $host;
#        rewrite ^/app/(.*)$ /$1 break;
#        
#    }

    location /ui/api {
        if ($request_method = 'OPTIONS') {
                return 204;
        }
		return 202;
    }
}