Allow setting a custom HTTP method in CacheBuster (#26528)

Co-authored-by: Jorijn Schrijvershof <jorijn@jorijn.com>

app/lib/cache_buster.rb

@@ -2,8 +2,14 @@
 
 class CacheBuster
   def initialize(options = {})
-    @secret_header = options[:secret_header] || 'Secret-Header'
-    @secret        = options[:secret] || 'True'
+    ActiveSupport::Deprecation.warn('Default values for the cache buster secret header name and values will be removed in Mastodon 4.3. Please set them explicitely if you rely on those.') unless options[:http_method] || (options[:secret] && options[:secret_header])
+
+    @secret_header = options[:secret_header] ||
+                     (options[:http_method] ? nil : 'Secret-Header')
+    @secret = options[:secret] ||
+              (options[:http_method] ? nil : 'True')
+
+    @http_method = options[:http_method] || 'GET'
   end
 
   def bust(url)
@@ -21,8 +27,9 @@ class CacheBuster
   end
 
   def build_request(url, http_client)
-    Request.new(:get, url, http_client: http_client).tap do |request|
-      request.add_headers(@secret_header => @secret)
-    end
+    request = Request.new(@http_method.downcase.to_sym, url, http_client: http_client)
+    request.add_headers(@secret_header => @secret) if @secret_header.present? && @secret && !@secret.empty?
+
+    request
   end
 end

app/lib/request.rb

@@ -117,7 +117,7 @@ class Request
 
   def perform
     begin
-      response = http_client.public_send(@verb, @url.to_s, @options.merge(headers: headers))
+      response = http_client.request(@verb, @url.to_s, @options.merge(headers: headers))
     rescue => e
       raise e.class, "#{e.message} on #{@url}", e.backtrace[0]
     end