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-rw-r--r--actionpack/CHANGELOG.md12
-rw-r--r--actionpack/lib/action_dispatch/middleware/debug_exceptions.rb24
-rw-r--r--actionpack/test/dispatch/debug_exceptions_test.rb24
3 files changed, 59 insertions, 1 deletions
diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index a370c3fc99..79209e908f 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,15 @@
+* Introduce ActionDispatch::DebugExceptions.register_interceptor
+
+ Exception aware plugin authors can use the newly introduced
+ `.register_interceptor` method to get the processed exception, instead of
+ monkey patching DebugExceptions.
+
+ ActionDispatch::DebugExceptions.register_interceptor do |request, exception|
+ HypoteticalPlugin.capture_exception(request, exception)
+ end
+
+ *Genadi Samokovarov*
+
* Output only one Content-Security-Policy nonce header value per request.
Fixes #32597.
diff --git a/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb b/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb
index 511306eb0e..33edad8bd9 100644
--- a/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb
@@ -50,10 +50,18 @@ module ActionDispatch
end
end
- def initialize(app, routes_app = nil, response_format = :default)
+ cattr_reader :interceptors, instance_accessor: false, default: []
+
+ def self.register_interceptor(object = nil, &block)
+ interceptor = object || block
+ interceptors << interceptor
+ end
+
+ def initialize(app, routes_app = nil, response_format = :default, interceptors = self.class.interceptors)
@app = app
@routes_app = routes_app
@response_format = response_format
+ @interceptors = interceptors
end
def call(env)
@@ -67,12 +75,26 @@ module ActionDispatch
response
rescue Exception => exception
+ invoke_interceptors(request, exception)
raise exception unless request.show_exceptions?
render_exception(request, exception)
end
private
+ def invoke_interceptors(request, exception)
+ backtrace_cleaner = request.get_header("action_dispatch.backtrace_cleaner")
+ wrapper = ExceptionWrapper.new(backtrace_cleaner, exception)
+
+ @interceptors.each do |interceptor|
+ begin
+ interceptor.call(request, exception)
+ rescue Exception
+ log_error(request, wrapper)
+ end
+ end
+ end
+
def render_exception(request, exception)
backtrace_cleaner = request.get_header("action_dispatch.backtrace_cleaner")
wrapper = ExceptionWrapper.new(backtrace_cleaner, exception)
diff --git a/actionpack/test/dispatch/debug_exceptions_test.rb b/actionpack/test/dispatch/debug_exceptions_test.rb
index 60acba0616..045567ff83 100644
--- a/actionpack/test/dispatch/debug_exceptions_test.rb
+++ b/actionpack/test/dispatch/debug_exceptions_test.rb
@@ -3,6 +3,8 @@
require "abstract_unit"
class DebugExceptionsTest < ActionDispatch::IntegrationTest
+ InterceptedErrorInstance = StandardError.new
+
class Boomer
attr_accessor :closed
@@ -36,6 +38,8 @@ class DebugExceptionsTest < ActionDispatch::IntegrationTest
raise RuntimeError
when %r{/method_not_allowed}
raise ActionController::MethodNotAllowed
+ when %r{/intercepted_error}
+ raise InterceptedErrorInstance
when %r{/unknown_http_method}
raise ActionController::UnknownHttpMethod
when %r{/not_implemented}
@@ -76,9 +80,13 @@ class DebugExceptionsTest < ActionDispatch::IntegrationTest
end
end
+ Interceptor = proc { |request, exception| request.set_header("int", exception) }
+ BadInterceptor = proc { |request, exception| raise "bad" }
RoutesApp = Struct.new(:routes).new(SharedTestRoutes)
ProductionApp = ActionDispatch::DebugExceptions.new(Boomer.new(false), RoutesApp)
DevelopmentApp = ActionDispatch::DebugExceptions.new(Boomer.new(true), RoutesApp)
+ InterceptedApp = ActionDispatch::DebugExceptions.new(Boomer.new(true), RoutesApp, :default, [Interceptor])
+ BadInterceptedApp = ActionDispatch::DebugExceptions.new(Boomer.new(true), RoutesApp, :default, [BadInterceptor])
test "skip diagnosis if not showing detailed exceptions" do
@app = ProductionApp
@@ -499,4 +507,20 @@ class DebugExceptionsTest < ActionDispatch::IntegrationTest
end
end
end
+
+ test "invoke interceptors before rendering" do
+ @app = InterceptedApp
+ get "/intercepted_error", headers: { "action_dispatch.show_exceptions" => true }
+
+ assert_equal InterceptedErrorInstance, request.get_header("int")
+ end
+
+ test "bad interceptors doesn't debug exceptions" do
+ @app = BadInterceptedApp
+
+ get "/puke", headers: { "action_dispatch.show_exceptions" => true }
+
+ assert_response 500
+ assert_match(/puke/, body)
+ end
end