Make php-fpm's max_children configurable

src/symbols/factory.rs

@@ -93,7 +93,7 @@ impl<'b, C: 'b + CommandRunner, P: 'b + Policy> SymbolFactory<'b, C, P> {
     format!("/run/php/{}.sock", user_name).into()
   }
 
-  fn get_php_fpm_pool<'a>(&'a self, user_name: &str) -> impl Symbol + 'a {
+  fn get_php_fpm_pool<'a>(&'a self, user_name: &str, max_children: usize) -> impl Symbol + 'a {
     let socket = self.get_php_fpm_pool_socket_path(user_name);
     let php_version = self.policy.php_version();
     Hook::new(
@@ -107,12 +107,13 @@ group = www-data
 listen = {1}
 listen.owner = www-data
 pm = ondemand
-pm.max_children = 10
+pm.max_children = {2}
 catch_workers_output = yes
 env[PATH] = /usr/local/bin:/usr/bin:/bin
 ",
           user_name,
-          socket.to_str().unwrap()
+          socket.to_str().unwrap(),
+          max_children
         ),
       ),
       ReloadService::new(format!("php{}-fpm", php_version), self.command_runner),
@@ -123,12 +124,13 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
     &'a self,
     host_name: &'static str,
     root_dir: ROOT,
+    max_children: usize,
     additional_config: &'a str,
   ) -> impl Symbol + 'a {
     let user_name = self.policy.user_name_for_host(host_name);
     let socket = self.get_php_fpm_pool_socket_path(&user_name);
     List::from((
-      self.get_php_fpm_pool(&user_name),
+      self.get_php_fpm_pool(&user_name, max_children),
       self.get_nginx_acme_server(
         host_name,
         NginxServer::new_php(
@@ -150,6 +152,7 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
     self.serve_php(
       host_name,
       root_dir,
+      10,
       "
         location / {{
           try_files         $uri $uri/ /index.php?$args;
@@ -166,7 +169,7 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
     let user_name = self.policy.user_name_for_host(host_name);
     let socket = self.get_php_fpm_pool_socket_path(&user_name);
     List::from((
-      self.get_php_fpm_pool(&user_name),
+      self.get_php_fpm_pool(&user_name, 10),
       self.get_nginx_acme_server(host_name,
         NginxServer::new(
           host_name,
@@ -205,6 +208,7 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
     self.serve_php(
       host_name,
       root_dir,
+      25,
       "
               client_max_body_size 500M;
 

src/symbols/nginx/server.rs

@@ -135,7 +135,7 @@ impl<'a, C: CommandRunner> NginxServer<'a, C, String, PathBuf> {
 
   pub fn new_proxy<S: SocketSpec, STATIC: AsRef<Path>>(
     domain: &'a str,
-    socket_path: &'_ S,
+    socket_path: &S,
     static_path: STATIC,
     command_runner: &'a C,
   ) -> Self {

src/symbols/systemd/reload.rs

@@ -24,9 +24,10 @@ impl<S: AsRef<str>, C: CommandRunner> Symbol for ReloadService<'_, S, C> {
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self
-      .command_runner
-      .run_successfully("systemctl", args!["reload-or-restart", self.service.as_ref()])
+    self.command_runner.run_successfully(
+      "systemctl",
+      args!["reload-or-restart", self.service.as_ref()],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {