class ActionDispatch::ExceptionWrapper
Attributes
backtrace[R]
backtrace_cleaner[R]
exception[R]
exception_class_name[R]
wrapped_causes[R]
Public Class Methods
new(backtrace_cleaner, exception)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 50 def initialize(backtrace_cleaner, exception) @backtrace_cleaner = backtrace_cleaner @exception_class_name = exception.class.name @wrapped_causes = wrapped_causes_for(exception, backtrace_cleaner) @exception = exception if exception.is_a?(SyntaxError) @exception = ActiveSupport::SyntaxErrorProxy.new(exception) end @backtrace = build_backtrace end
status_code_for_exception(class_name)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 175 def self.status_code_for_exception(class_name) Rack::Utils.status_code(@@rescue_responses[class_name]) end
Public Instance Methods
actions()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 101 def actions ActiveSupport::ActionableError.actions(@exception) end
annotated_source_code()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 113 def annotated_source_code if exception.respond_to?(:annotated_source_code) exception.annotated_source_code else [] end end
application_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 135 def application_trace clean_backtrace(:silent) end
corrections()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 89 def corrections @exception.corrections end
exception_id()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 228 def exception_id exception.object_id end
exception_inspect()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 224 def exception_inspect exception.inspect end
exception_name()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 216 def exception_name exception.cause.class.to_s end
exception_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 129 def exception_trace trace = application_trace trace = framework_trace if trace.empty? && !silent_exceptions.include?(@exception_class_name) trace end
failures()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 77 def failures @exception.failures end
file_name()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 93 def file_name @exception.file_name end
framework_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 139 def framework_trace clean_backtrace(:noise) end
full_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 143 def full_trace clean_backtrace(:all) end
has_cause?()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 73 def has_cause? @exception.cause end
has_corrections?()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 81 def has_corrections? @exception.respond_to?(:original_message) && @exception.respond_to?(:corrections) end
line_number()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 97 def line_number @exception.line_number end
message()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 220 def message exception.message end
original_message()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 85 def original_message @exception.original_message end
rescue_response?()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 194 def rescue_response? @@rescue_responses.key?(exception.class.name) end
rescue_template()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 121 def rescue_template @@rescue_templates[@exception_class_name] end
routing_error?()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 61 def routing_error? @exception.is_a?(ActionController::RoutingError) end
show?(request)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 179 def show?(request) # We're treating `nil` as "unset", and we want the default setting to be `:all`. # This logic should be extracted to `env_config` and calculated once. config = request.get_header("action_dispatch.show_exceptions") case config when :none false when :rescuable rescue_response? else true end end
source_extracts()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 198 def source_extracts backtrace.map do |trace| extract_source(trace) end end
source_to_show_id()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 212 def source_to_show_id (traces[trace_to_show].first || {})[:id] end
status_code()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 125 def status_code self.class.status_code_for_exception(unwrapped_exception.class.name) end
sub_template_message()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 69 def sub_template_message @exception.sub_template_message end
template_error?()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 65 def template_error? @exception.is_a?(ActionView::Template::Error) end
trace_to_show()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 204 def trace_to_show if traces["Application Trace"].empty? && rescue_template != "routing_error" "Full Trace" else "Application Trace" end end
traces()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 147 def traces application_trace_with_ids = [] framework_trace_with_ids = [] full_trace_with_ids = [] full_trace.each_with_index do |trace, idx| trace_with_id = { exception_object_id: @exception.object_id, id: idx, trace: trace } if application_trace.include?(trace) application_trace_with_ids << trace_with_id else framework_trace_with_ids << trace_with_id end full_trace_with_ids << trace_with_id end { "Application Trace" => application_trace_with_ids, "Framework Trace" => framework_trace_with_ids, "Full Trace" => full_trace_with_ids } end
unwrapped_exception()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 105 def unwrapped_exception if wrapper_exceptions.include?(@exception_class_name) @exception.cause else @exception end end
Private Instance Methods
build_backtrace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 254 def build_backtrace built_methods = {} ActionView::PathRegistry.all_resolvers.each do |resolver| resolver.built_templates.each do |template| built_methods[template.method_name] = template end end (@exception.backtrace_locations || []).map do |loc| if built_methods.key?(loc.label.to_s) thread_backtrace_location = if loc.respond_to?(:__getobj__) loc.__getobj__ else loc end SourceMapLocation.new(thread_backtrace_location, built_methods[loc.label.to_s]) else loc end end end
causes_for(exception) { |exception while exception = cause| ... }
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 277 def causes_for(exception) return enum_for(__method__, exception) unless block_given? yield exception while exception = exception.cause end
clean_backtrace(*args)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 287 def clean_backtrace(*args) if backtrace_cleaner backtrace_cleaner.clean(backtrace, *args) else backtrace end end
extract_file_and_line_number(trace)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 340 def extract_file_and_line_number(trace) [trace.path, trace.lineno] end
extract_source(trace)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 295 def extract_source(trace) spot = trace.spot(@exception) if spot line = spot[:first_lineno] code = extract_source_fragment_lines(spot[:script_lines], line) if line == spot[:last_lineno] code[line] = [ code[line][0, spot[:first_column]], code[line][spot[:first_column]...spot[:last_column]], code[line][spot[:last_column]..-1], ] end return { code: code, line_number: line } end file, line_number = extract_file_and_line_number(trace) { code: source_fragment(file, line_number), line_number: line_number } end
extract_source_fragment_lines(source_lines, line)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 324 def extract_source_fragment_lines(source_lines, line) start = [line - 3, 0].max lines = source_lines.drop(start).take(6) Hash[*(start + 1..(lines.count + start)).zip(lines).flatten] end
source_fragment(path, line)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 330 def source_fragment(path, line) return unless Rails.respond_to?(:root) && Rails.root full_path = Rails.root.join(path) if File.exist?(full_path) File.open(full_path, "r") do |file| extract_source_fragment_lines(file.each_line, line) end end end
wrapped_causes_for(exception, backtrace_cleaner)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 283 def wrapped_causes_for(exception, backtrace_cleaner) causes_for(exception).map { |cause| self.class.new(backtrace_cleaner, cause) } end