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dokku/plugins/nginx-vhosts/templates/nginx.conf.sigil
Jose Diaz-Gonzalez 465de6cc71 refactor: consolidate nginx.conf.sigil server blocks
The default nginx template rendered four near-identical server blocks per app, so the same listen, access_log, error_log, ssl_*, error_page, and proxy chain had to be maintained across http, https, grpc, and grpcs branches. Merging http and https into a single branch keyed on an `is_ssl` boolean, and likewise grpc and grpcs, removes the duplicate proxy_set_header chain and error-page locations and brings the structure in line with the openresty proxy template. Output is preserved up to whitespace and the existing `cat -s` pass already squashes the leftover blank lines. Adds plugins/nginx-vhosts/template_test.go exercising the rendered output via sigil as a Go library across HTTP-only, HTTPS, HTTP-to-HTTPS redirect, no-listeners 502 fallback, gRPC, gRPCs, gRPC-without-listeners skip, IPv4 bind, upstream blocks with and without keepalive, the access_log `off` short-circuit, the X-Forwarded-Ssl toggle, the http2 listen-parameter vs directive split, http2_push_preload conditional emission, and the nginx.conf.d/*.conf include in every code path; and tests/unit/nginx-vhosts_16.bats covering deploy plus `nginx -t` end-to-end for both HTTP and HTTPS apps.
2026-04-30 16:36:45 -04:00

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{{ range $port_map := .PROXY_PORT_MAP | split " " }}
{{ $port_map_list := $port_map | split ":" }}
{{ $scheme := index $port_map_list 0 }}
{{ $listen_port := index $port_map_list 1 }}
{{ $upstream_port := index $port_map_list 2 }}
{{ if or (eq $scheme "http") (eq $scheme "https") }}
{{ $is_ssl := eq $scheme "https" }}
{{ $is_redirect := and (not $is_ssl) (eq $listen_port "80") $.SSL_INUSE }}
server {
{{ if $is_ssl }}
{{ if eq $.HTTP2_DIRECTIVE_SUPPORTED "true" }}
listen [{{ $.NGINX_BIND_ADDRESS_IP6 }}]:{{ $listen_port }} ssl;
listen {{ if $.NGINX_BIND_ADDRESS_IP4 }}{{ $.NGINX_BIND_ADDRESS_IP4 }}:{{end}}{{ $listen_port }} ssl;
http2 on;
{{ else }}
listen [{{ $.NGINX_BIND_ADDRESS_IP6 }}]:{{ $listen_port }} ssl http2;
listen {{ if $.NGINX_BIND_ADDRESS_IP4 }}{{ $.NGINX_BIND_ADDRESS_IP4 }}:{{end}}{{ $listen_port }} ssl http2;
{{ end }}
{{ else }}
listen [{{ $.NGINX_BIND_ADDRESS_IP6 }}]:{{ $listen_port }};
listen {{ if $.NGINX_BIND_ADDRESS_IP4 }}{{ $.NGINX_BIND_ADDRESS_IP4 }}:{{end}}{{ $listen_port }};
{{ end }}
{{ if and $is_ssl $.SSL_SERVER_NAME }}server_name {{ $.SSL_SERVER_NAME }}; {{ end }}
{{ if $.NOSSL_SERVER_NAME }}server_name {{ $.NOSSL_SERVER_NAME }}; {{ end }}
access_log {{ $.NGINX_ACCESS_LOG_PATH }}{{ if and ($.NGINX_ACCESS_LOG_FORMAT) (ne $.NGINX_ACCESS_LOG_PATH "off") }} {{ $.NGINX_ACCESS_LOG_FORMAT }}{{ end }};
error_log {{ $.NGINX_ERROR_LOG_PATH }};
underscores_in_headers {{ $.NGINX_UNDERSCORE_IN_HEADERS }};
client_body_timeout {{ $.CLIENT_BODY_TIMEOUT }};
client_header_timeout {{ $.CLIENT_HEADER_TIMEOUT }};
keepalive_timeout {{ $.KEEPALIVE_TIMEOUT }};
lingering_timeout {{ $.LINGERING_TIMEOUT }};
send_timeout {{ $.SEND_TIMEOUT }};
{{ if $is_ssl }}
ssl_certificate {{ $.APP_SSL_PATH }}/server.crt;
ssl_certificate_key {{ $.APP_SSL_PATH }}/server.key;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers off;
{{ end }}
{{ if $is_redirect }}
include {{ $.DOKKU_ROOT }}/{{ $.APP }}/nginx.conf.d/*.conf;
location / {
return 301 https://$host:{{ $.PROXY_SSL_PORT }}$request_uri;
}
{{ else }}
location / {
{{ if $.DOKKU_APP_WEB_LISTENERS }}
gzip on;
gzip_min_length 1100;
gzip_buffers 4 32k;
gzip_types text/css text/javascript text/xml text/plain text/x-component application/javascript application/x-javascript application/wasm application/json application/graphql-response+json application/xml application/rss+xml font/truetype application/x-font-ttf font/opentype application/vnd.ms-fontobject image/svg+xml;
gzip_vary on;
gzip_comp_level 6;
proxy_pass http://{{ $.APP }}-{{ $upstream_port }};
{{ if and $is_ssl (eq $.HTTP2_PUSH_SUPPORTED "true") }}http2_push_preload on; {{ end }}
proxy_http_version 1.1;
proxy_connect_timeout {{ $.PROXY_CONNECT_TIMEOUT }};
proxy_read_timeout {{ $.PROXY_READ_TIMEOUT }};
proxy_send_timeout {{ $.PROXY_SEND_TIMEOUT }};
proxy_buffer_size {{ $.PROXY_BUFFER_SIZE }};
proxy_buffering {{ $.PROXY_BUFFERING }};
proxy_buffers {{ $.PROXY_BUFFERS }};
proxy_busy_buffers_size {{ $.PROXY_BUSY_BUFFERS_SIZE }};
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $http_connection;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For {{ $.PROXY_X_FORWARDED_FOR }};
proxy_set_header X-Forwarded-Port {{ $.PROXY_X_FORWARDED_PORT }};
proxy_set_header X-Forwarded-Proto {{ $.PROXY_X_FORWARDED_PROTO }};
proxy_set_header X-Request-Start $msec;
{{ if $.PROXY_X_FORWARDED_SSL }}proxy_set_header X-Forwarded-Ssl {{ $.PROXY_X_FORWARDED_SSL }};{{ end }}
{{ else }}
return 502;
{{ end }}
}
client_max_body_size {{ $.CLIENT_MAX_BODY_SIZE }};
error_page 400 401 402 403 405 406 407 408 409 410 411 412 413 414 415 416 417 418 420 422 423 424 426 428 429 431 444 449 450 451 /400-error.html;
location /400-error.html {
root {{ $.DOKKU_LIB_ROOT }}/data/nginx-vhosts/dokku-errors;
internal;
}
error_page 404 /404-error.html;
location /404-error.html {
root {{ $.DOKKU_LIB_ROOT }}/data/nginx-vhosts/dokku-errors;
internal;
}
{{ if $is_ssl }}
error_page 500 501 503 504 505 506 507 508 509 510 511 /500-error.html;
{{ else }}
error_page 500 501 502 503 504 505 506 507 508 509 510 511 /500-error.html;
{{ end }}
location /500-error.html {
root {{ $.DOKKU_LIB_ROOT }}/data/nginx-vhosts/dokku-errors;
internal;
}
{{ if $is_ssl }}
error_page 502 /502-error.html;
location /502-error.html {
root {{ $.DOKKU_LIB_ROOT }}/data/nginx-vhosts/dokku-errors;
internal;
}
{{ end }}
include {{ $.DOKKU_ROOT }}/{{ $.APP }}/nginx.conf.d/*.conf;
{{ end }}
}
{{ else if or (eq $scheme "grpc") (eq $scheme "grpcs") }}
{{ if $.DOKKU_APP_WEB_LISTENERS }}
{{ $is_ssl := eq $scheme "grpcs" }}
server {
{{ if eq $.HTTP2_DIRECTIVE_SUPPORTED "true" }}
listen [{{ $.NGINX_BIND_ADDRESS_IP6 }}]:{{ $listen_port }}{{ if $is_ssl }} ssl{{ end }};
listen {{ if $.NGINX_BIND_ADDRESS_IP4 }}{{ $.NGINX_BIND_ADDRESS_IP4 }}:{{end}}{{ $listen_port }}{{ if $is_ssl }} ssl{{ end }};
http2 on;
{{ else }}
listen [{{ $.NGINX_BIND_ADDRESS_IP6 }}]:{{ $listen_port }}{{ if $is_ssl }} ssl{{ end }} http2;
listen {{ if $.NGINX_BIND_ADDRESS_IP4 }}{{ $.NGINX_BIND_ADDRESS_IP4 }}:{{end}}{{ $listen_port }}{{ if $is_ssl }} ssl{{ end }} http2;
{{ end }}
{{ if $.NOSSL_SERVER_NAME }}server_name {{ $.NOSSL_SERVER_NAME }}; {{ end }}
access_log {{ $.NGINX_ACCESS_LOG_PATH }}{{ if and ($.NGINX_ACCESS_LOG_FORMAT) (ne $.NGINX_ACCESS_LOG_PATH "off") }} {{ $.NGINX_ACCESS_LOG_FORMAT }}{{ end }};
error_log {{ $.NGINX_ERROR_LOG_PATH }};
underscores_in_headers {{ $.NGINX_UNDERSCORE_IN_HEADERS }};
{{ if $is_ssl }}
ssl_certificate {{ $.APP_SSL_PATH }}/server.crt;
ssl_certificate_key {{ $.APP_SSL_PATH }}/server.key;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers off;
{{ end }}
location / {
grpc_pass grpc://{{ $.APP }}-{{ $upstream_port }};
}
client_max_body_size {{ $.CLIENT_MAX_BODY_SIZE }};
include {{ $.DOKKU_ROOT }}/{{ $.APP }}/nginx.conf.d/*.conf;
}
{{ end }}
{{ end }}
{{ end }}
{{ if $.DOKKU_APP_WEB_LISTENERS }}
{{ range $upstream_port := $.PROXY_UPSTREAM_PORTS | split " " }}
upstream {{ $.APP }}-{{ $upstream_port }} {
{{ if $.PROXY_KEEPALIVE }} keepalive {{ $.PROXY_KEEPALIVE }};{{ end }}
{{ range $listeners := $.DOKKU_APP_WEB_LISTENERS | split " " }}
{{ $listener_list := $listeners | split ":" }}
{{ $listener_ip := index $listener_list 0 }}
server {{ $listener_ip }}:{{ $upstream_port }};{{ end }}
}
{{ end }}{{ end }}