1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
# frozen_string_literal: true
require "active_support/core_ext/module/attribute_accessors"
require "rack/utils"
module ActionDispatch
class ExceptionWrapper
cattr_accessor :rescue_responses, default: Hash.new(:internal_server_error).merge!(
"ActionController::RoutingError" => :not_found,
"AbstractController::ActionNotFound" => :not_found,
"ActionController::MethodNotAllowed" => :method_not_allowed,
"ActionController::UnknownHttpMethod" => :method_not_allowed,
"ActionController::NotImplemented" => :not_implemented,
"ActionController::UnknownFormat" => :not_acceptable,
"ActionController::MissingExactTemplate" => :not_acceptable,
"ActionController::InvalidAuthenticityToken" => :unprocessable_entity,
"ActionController::InvalidCrossOriginRequest" => :unprocessable_entity,
"ActionDispatch::Http::Parameters::ParseError" => :bad_request,
"ActionController::BadRequest" => :bad_request,
"ActionController::ParameterMissing" => :bad_request,
"Rack::QueryParser::ParameterTypeError" => :bad_request,
"Rack::QueryParser::InvalidParameterError" => :bad_request
)
cattr_accessor :rescue_templates, default: Hash.new("diagnostics").merge!(
"ActionView::MissingTemplate" => "missing_template",
"ActionController::RoutingError" => "routing_error",
"AbstractController::ActionNotFound" => "unknown_action",
"ActiveRecord::StatementInvalid" => "invalid_statement",
"ActionView::Template::Error" => "template_error",
"ActionController::MissingExactTemplate" => "missing_exact_template",
)
cattr_accessor :wrapper_exceptions, default: [
"ActionView::Template::Error"
]
attr_reader :backtrace_cleaner, :exception, :wrapped_causes, :line_number, :file
def initialize(backtrace_cleaner, exception)
@backtrace_cleaner = backtrace_cleaner
@exception = exception
@wrapped_causes = wrapped_causes_for(exception, backtrace_cleaner)
expand_backtrace if exception.is_a?(SyntaxError) || exception.cause.is_a?(SyntaxError)
end
def unwrapped_exception
if wrapper_exceptions.include?(exception.class.to_s)
exception.cause
else
exception
end
end
def rescue_template
@@rescue_templates[@exception.class.name]
end
def status_code
self.class.status_code_for_exception(unwrapped_exception.class.name)
end
def application_trace
clean_backtrace(:silent)
end
def framework_trace
clean_backtrace(:noise)
end
def full_trace
clean_backtrace(:all)
end
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
def self.status_code_for_exception(class_name)
Rack::Utils.status_code(@@rescue_responses[class_name])
end
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
def trace_to_show
if traces["Application Trace"].empty? && rescue_template != "routing_error"
"Full Trace"
else
"Application Trace"
end
end
def source_to_show_id
(traces[trace_to_show].first || {})[:id]
end
private
def backtrace
Array(@exception.backtrace)
end
def causes_for(exception)
return enum_for(__method__, exception) unless block_given?
yield exception while exception = exception.cause
end
def wrapped_causes_for(exception, backtrace_cleaner)
causes_for(exception).map { |cause| self.class.new(backtrace_cleaner, cause) }
end
def clean_backtrace(*args)
if backtrace_cleaner
backtrace_cleaner.clean(backtrace, *args)
else
backtrace
end
end
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
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
def expand_backtrace
@exception.backtrace.unshift(
@exception.to_s.split("\n")
).flatten!
end
end
end
|
