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Commit 28a7ff23aa71ff1b9874dede1d236cdc1efb2145

Authored by Cyril Mougel
1 parent 0e90eba3
Exists in master and in 1 other branch production

Avoid same error if other line than first change 

Only the first line of backtrace was use to mark error like same. Avoid
this behavior because some language ( like python ) change only last
line of backtrace
Showing 2 changed files with 35 additions and 24 deletions   Show diff stats
app/models/fingerprint.rb
  Diff comments   View file @28a7ff2
1 1 require 'digest/sha1'
2 2  
3 3 class Fingerprint
  4 +
4 5 attr_reader :notice, :api_key
5   -
  6 +
6 7 def self.generate(notice, api_key)
7 8 self.new(notice, api_key).to_s
8 9 end
9   -
  10 +
10 11 def initialize(notice, api_key)
11 12 @notice = notice
12 13 @api_key = api_key
13 14 end
14   -
15   -
16   -
  15 +
17 16 def to_s
18 17 Digest::SHA1.hexdigest(fingerprint_source.to_s)
19 18 end
20   -
21   - def fingerprint_source
22   - # Find the first backtrace line with a file and line number.
23   - if line = notice.backtrace.lines.detect {|l| l.number.present? && l.file.present? }
24   - # If line exists, only use file and number.
25   - file_or_message = "#{line.file}:#{line.number}"
26   - else
27   - # If no backtrace, use error message
28   - file_or_message = notice.message
29   - end
30 19  
  20 + def fingerprint_source
31 21 {
32 22 :file_or_message => file_or_message,
33 23 :error_class => notice.error_class,
... ... @@ -37,5 +27,9 @@ class Fingerprint
37 27 :api_key => api_key
38 28 }
39 29 end
40   -
  30 +
  31 + def file_or_message
  32 + @file_or_message ||= notice.message + notice.backtrace.fingerprint
  33 + end
  34 +
41 35 end
... ...
spec/models/fingerprint_spec.rb
  Diff comments   View file @28a7ff2
... ... @@ -3,19 +3,36 @@ require 'spec_helper'
3 3 describe Fingerprint do
4 4  
5 5 context '#generate' do
6   - before do
7   - @backtrace = Backtrace.find_or_create(:raw => [
  6 + let(:backtrace) {
  7 + Backtrace.create(:raw => [
8 8 {"number"=>"425", "file"=>"[GEM_ROOT]/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb", "method"=>"_run__2115867319__process_action__262109504__callbacks"},
9 9 {"number"=>"404", "file"=>"[GEM_ROOT]/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb", "method"=>"send"},
10 10 {"number"=>"404", "file"=>"[GEM_ROOT]/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb", "method"=>"_run_process_action_callbacks"}
11 11 ])
  12 + }
  13 + let(:notice1) { Fabricate.build(:notice, :backtrace => backtrace) }
  14 + let(:notice2) { Fabricate.build(:notice, :backtrace => backtrace_2) }
  15 +
  16 + context "with same backtrace" do
  17 + let(:backtrace_2) { backtrace }
  18 + it 'should create the same fingerprint for two notices' do
  19 + expect(Fingerprint.generate(notice1, "api key")).to eq Fingerprint.generate(notice2, "api key")
  20 + end
12 21 end
13   -
14   - it 'should create the same fingerprint for two notices with the same backtrace' do
15   - notice1 = Fabricate.build(:notice, :backtrace => @backtrace)
16   - notice2 = Fabricate.build(:notice, :backtrace => @backtrace)
17   -
18   - Fingerprint.generate(notice1, "api key").should == Fingerprint.generate(notice2, "api key")
  22 +
  23 + context "with different backtrace with only last line change" do
  24 + let(:backtrace_2) {
  25 + backtrace
  26 + backtrace.lines.last.number = 401
  27 + backtrace.send(:generate_fingerprint)
  28 + backtrace.save
  29 + backtrace
  30 + }
  31 + it 'should not same fingerprint' do
  32 + expect(
  33 + Fingerprint.generate(notice1, "api key")
  34 + ).not_to eql Fingerprint.generate(notice2, "api key")
  35 + end
19 36 end
20 37 end
21 38  
... ...