class ActionDispatch::ExceptionWrapper
Attributes
backtrace_cleaner[R]
exception[R]
file[R]
line_number[R]
wrapped_causes[R]
Public Class Methods
new(backtrace_cleaner, exception)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 46 def initialize(backtrace_cleaner, exception) @backtrace_cleaner = backtrace_cleaner @exception = exception @exception_class_name = @exception.class.name @wrapped_causes = wrapped_causes_for(exception, backtrace_cleaner) expand_backtrace if exception.is_a?(SyntaxError) || exception.cause.is_a?(SyntaxError) end
status_code_for_exception(class_name)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 117 def self.status_code_for_exception(class_name) Rack::Utils.status_code(@@rescue_responses[class_name]) end
Public Instance Methods
application_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 77 def application_trace clean_backtrace(:silent) end
exception_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 71 def exception_trace trace = application_trace trace = framework_trace if trace.empty? && !silent_exceptions.include?(@exception_class_name) trace end
framework_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 81 def framework_trace clean_backtrace(:noise) end
full_trace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 85 def full_trace clean_backtrace(:all) end
rescue_template()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 63 def rescue_template @@rescue_templates[@exception_class_name] end
source_extracts()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 121 def source_extracts backtrace.map do |trace| file, line_number = extract_file_and_line_number(trace) { code: source_fragment(file, line_number), line_number: line_number } end end
source_to_show_id()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 140 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 67 def status_code self.class.status_code_for_exception(unwrapped_exception.class.name) end
trace_to_show()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 132 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 89 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 55 def unwrapped_exception if wrapper_exceptions.include?(@exception_class_name) exception.cause else exception end end
Private Instance Methods
backtrace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 145 def backtrace Array(@exception.backtrace) end
causes_for(exception) { |exception while exception = cause| ... }
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 149 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 159 def clean_backtrace(*args) if backtrace_cleaner backtrace_cleaner.clean(backtrace, *args) else backtrace end end
expand_backtrace()
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 186 def expand_backtrace @exception.backtrace.unshift( @exception.to_s.split("\n") ).flatten! end
extract_file_and_line_number(trace)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 179 def extract_file_and_line_number(trace) # Split by the first colon followed by some digits, which works for both # Windows and Unix path styles. file, line = trace.match(/^(.+?):(\d+).*$/, &:captures) || trace [file, line.to_i] end
source_fragment(path, line)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 167 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| start = [line - 3, 0].max lines = file.each_line.drop(start).take(6) Hash[*(start + 1..(lines.count + start)).zip(lines).flatten] end end end
wrapped_causes_for(exception, backtrace_cleaner)
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# File lib/action_dispatch/middleware/exception_wrapper.rb, line 155 def wrapped_causes_for(exception, backtrace_cleaner) causes_for(exception).map { |cause| self.class.new(backtrace_cleaner, cause) } end