Class: NdrError::Fingerprint

Inherits:
Object
  • Object
show all
Defined in:
app/models/ndr_error/fingerprint.rb

Overview

Fingerprints group together similar error occurences.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.filter_by_keywords(keywords) ⇒ Object 



33
34
35
36
37
38
39
 
# File 'app/models/ndr_error/fingerprint.rb', line 33

def self.filter_by_keywords(keywords)
  md5_match = keywords.map do |part|
    sanitize_sql(["#{table_name}.#{primary_key} LIKE ?", "%#{part}%"])
  end.join(' OR ')

  where(md5_match)
end

.find_or_create_by_id(digest) ⇒ Object

Gets a fingerprint record for the given MD5 digest.



43
44
45
46
47
48
49
50
 
# File 'app/models/ndr_error/fingerprint.rb', line 43

def self.find_or_create_by_id(digest)
  existing = find_by(error_fingerprintid: digest)

  existing || create do |print|
    print.count = 0
    print.error_fingerprintid = digest
  end
end

Instance Method Details

#ensure_ticket_url_matched_a_supplied_format ⇒ Object

Optionally, NdrError can validate ticket urls:



53
54
55
56
 
# File 'app/models/ndr_error/fingerprint.rb', line 53

def ensure_ticket_url_matched_a_supplied_format
  return unless NdrError.ticket_url_format && ticket_url.present?
  errors.add(:ticket_url, 'has bad format!') if ticket_url !~ NdrError.ticket_url_format
end

#first_occurrence ⇒ Object

Returns the record corresponding to the first occurrence of this type of error.



85
86
87
 
# File 'app/models/ndr_error/fingerprint.rb', line 85

def first_occurrence
  error_logs.not_deleted.last
end

#latest_occurrence ⇒ Object

Returns the record corresponding to the most recent occurrence of this type of error.



92
93
94
 
# File 'app/models/ndr_error/fingerprint.rb', line 92

def latest_occurrence
  error_logs.not_deleted.first
end

#purge! ⇒ Object

Remove all instances of the error, but keep the fingerprint record for the future.



60
61
62
 
# File 'app/models/ndr_error/fingerprint.rb', line 60

def purge!
  error_logs.each(&:flag_as_deleted!)
end

#store_log(log, bypass_limit = false) ⇒ Object

Saves the supplied log unless there is already deemed to be enough evidence. Stores an updated count regardless, though.

‘bypass_limit’ can be set to true in order to force creation of a new log record.



71
72
73
74
75
76
77
78
79
80
81
 
# File 'app/models/ndr_error/fingerprint.rb', line 71

def store_log(log, bypass_limit = false)
  if bypass_limit || (error_logs.not_deleted.count < NdrError.fingerprint_threshold)
    error_logs << log
  end

  self.count += 1
  save!

  # Don't return the log if it was discarded:
  log.new_record? ? nil : log
end