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refactor(php-fpm): rework php-fpm backend selection to reduce complexity #63

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Merged
navarr merged 1 commit into from
Oct 25, 2025
Merged

refactor(php-fpm): rework php-fpm backend selection to reduce complexity #63

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26 changes: 13 additions & 13 deletions nginx/etc/nginx/conf.d/default.conf
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Original file line number Diff line number Diff line change
@@ -1,19 +1,17 @@
# default Docker DNS server
resolver 127.0.0.11;

# Select upstream backend to use based on presense of Xdebug cookies and Blackfire headers
map "$http_X_BLACKFIRE_QUERY:$cookie_XDEBUG_SESSION$cookie_XDEBUG_PROFILE$cookie_XDEBUG_TRACE$arg_XDEBUG_SESSION$arg_XDEBUG_SESSION_START:$cookie_SPX_ENABLED$cookie_SPX_KEY$arg_SPX_ENABLED$arg_SPX_KEY$arg_SPX_UI_URI" $fastcgi_backend {
# Nothing for debug and nothing for blackfire means its a pure request
"::" ${NGINX_UPSTREAM_HOST}:${NGINX_UPSTREAM_PORT};

# Use blackfire if the blackfire query is specified AND no debug cookie is set
"~::$" ${NGINX_UPSTREAM_BLACKFIRE_HOST}:${NGINX_UPSTREAM_BLACKFIRE_PORT};

# Use SPX if the SPX cookie is specified AND no xdebug cookie is set
"~::.+" ${NGINX_UPSTREAM_SPX_HOST}:${NGINX_UPSTREAM_SPX_PORT};

# In all other cases, a debug cookie will be present; use debug container
default ${NGINX_UPSTREAM_DEBUG_HOST}:${NGINX_UPSTREAM_DEBUG_PORT};
# Select the appropriate FastCGI backend based on the presence of specific headers or cookies
# Map Format: "<Service>:<Identifiers>;"
map "
BF:$http_X_BLACKFIRE_QUERY;
DBG:$cookie_XDEBUG_SESSION$cookie_XDEBUG_PROFILE$cookie_XDEBUG_TRACE$arg_XDEBUG_SESSION$arg_XDEBUG_SESSION_START;
SPX:$cookie_SPX_ENABLED$cookie_SPX_KEY$arg_SPX_ENABLED$arg_SPX_KEY$arg_SPX_UI_URI;
" $fastcgi_backend {
"~DBG:.+;" ${NGINX_UPSTREAM_DEBUG_HOST}:${NGINX_UPSTREAM_DEBUG_PORT};
"~BF:.+;" ${NGINX_UPSTREAM_BLACKFIRE_HOST}:${NGINX_UPSTREAM_BLACKFIRE_PORT};
"~SPX:.+;" ${NGINX_UPSTREAM_SPX_HOST}:${NGINX_UPSTREAM_SPX_PORT};
default ${NGINX_UPSTREAM_HOST}:${NGINX_UPSTREAM_PORT};
}

server {
Expand All @@ -26,6 +24,8 @@ server {
autoindex off;
charset UTF-8;

add_header x-backend "$fastcgi_backend" always;

include /etc/nginx/available.d/${NGINX_TEMPLATE};
include /etc/nginx/default.d/*.conf;
}