Add config to set connection pool checkout timeout

src/invidious.cr

@@ -92,14 +92,20 @@ SOFTWARE = {
   "branch"  => "#{CURRENT_BRANCH}",
 }
 
-YT_POOL = Invidious::ConnectionPool::Pool.new(YT_URL, max_capacity: CONFIG.pool_size, idle_capacity: CONFIG.idle_pool_size)
+YT_POOL = Invidious::ConnectionPool::Pool.new(
+  YT_URL,
+  max_capacity: CONFIG.pool_size,
+  idle_capacity: CONFIG.idle_pool_size,
+  timeout: CONFIG.pool_checkout_timeout
+)
 
 # Image request pool
 
 GGPHT_POOL = Invidious::ConnectionPool::Pool.new(
   URI.parse("https://yt3.ggpht.com"),
   max_capacity: CONFIG.pool_size,
-  idle_capacity: CONFIG.idle_pool_size
+  idle_capacity: CONFIG.idle_pool_size,
+  timeout: CONFIG.pool_checkout_timeout
 )
 
 COMPANION_POOL = Invidious::ConnectionPool::CompanionPool.new(

src/invidious/config.cr

@@ -163,6 +163,9 @@ class Config
   # Idle pool size for HTTP requests to youtube.com and ytimg.com (each domain has a separate pool)
   property idle_pool_size : Int32? = nil
 
+  # Amount of seconds to wait for a client to be free from the pool before rasing an error
+  property pool_checkout_timeout : Int32 = 5
+
   # HTTP Proxy configuration
   property http_proxy : HTTPProxyConfig? = nil
 

src/invidious/connection/pool.cr

@@ -128,7 +128,8 @@ module Invidious::ConnectionPool
       pool = Invidious::ConnectionPool::Pool.new(
         URI.parse("https://#{subdomain}.ytimg.com"),
         max_capacity: CONFIG.pool_size,
-        idle_capacity: CONFIG.idle_pool_size
+        idle_capacity: CONFIG.idle_pool_size,
+        timeout: CONFIG.pool_checkout_timeout
       )
       YTIMG_POOLS[subdomain] = pool