Module: StringHelpers

Extended by:
Gem::Text
Defined in:
lib/string_helpers.rb

Class Method Summary collapse

Class Method Details

.capitalize_only(str) ⇒ Object 



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# File 'lib/string_helpers.rb', line 8

def capitalize_only(str)
  str.slice(0, 1).capitalize + str.slice(1..-1)
end

.filter_misc_endpoints(rslt) ⇒ Object 



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# File 'lib/string_helpers.rb', line 57

def filter_misc_endpoints(rslt)
  # for endpoints of type '/cce/v1/patients/xxx/eligibility/<specialty>' replace <specialty> with zzz and
  # for endpoints of type '/facilities/v2/facilities/<id>' replace <id> with xxx
  # for endpoints of type '/vaos/v1/locations/<id>/clinics' replace <id> with xxx
  # for partial error responses, replace the trace ids with common label <id>
  # to provide better grouping in grafana
  case rslt
  when %r{/cce/v1/patients/xxx/eligibility/}
    "#{$LAST_MATCH_INFO}zzz"
  when %r{/facilities/v2/facilities/}
    "#{$LAST_MATCH_INFO}xxx"
  when /Could not get appointments from VistA Scheduling Service /
    "#{$LAST_MATCH_INFO}<id>"
  when %r{/vaos/v1/locations/[0-9A-Z]+/clinics$}
    '/vaos/v1/locations/xxx/clinics'
  else
    rslt
  end
end

.filtered_endpoint_tag(path) ⇒ Object 



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# File 'lib/string_helpers.rb', line 31

def filtered_endpoint_tag(path)
  # replace identifiers with 'xxx'
  # this nasty-looking regex attempts to cover:
  # * (possibly negative) digit identifiers
  # * uuid's with or without dashes
  # * institution id's of form 111A2222 or 11A22222
  digit = /-?\d+/
  contact_id = /\d{10}V\d{6}(%5ENI%5E200M%5EUSVHA)*/
  uuids = /[a-fA-F0-9]{8}(-?[a-fA-F0-9]{4}){3}-?[a-fA-F0-9]{12}/
  institution_ids = /[\dA-Z]{8}/
  provider_ids = /Providers\(\d{10}\)/
  okta_users = %r{(?<user_path>api/v1/users/)\w*}
  r = %r{
    (?<first_slash>/)
    (#{okta_users} |#{digit} |#{contact_id} |#{uuids} |#{institution_ids} |#{provider_ids})
    (?<ending_slash>/|$)
  }x

  # replace  ids sent in the endpoint with 'xxx'
  rslt = path.gsub(r) do
    "#{$LAST_MATCH_INFO[:first_slash]}#{$LAST_MATCH_INFO[:user_path]}xxx#{$LAST_MATCH_INFO[:ending_slash]}"
  end

  filter_misc_endpoints(rslt)
end

.heuristics(str_a, str_b) ⇒ Object 



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# File 'lib/string_helpers.rb', line 22

def heuristics(str_a, str_b)
  {
    length: [str_a.length, str_b.length],
    only_digits: [str_a.scan(/^\d+$/).any?, str_b.scan(/^\d+$/).any?],
    encoding: [str_a.encoding.to_s, str_b.encoding.to_s],
    levenshtein_distance: levenshtein_distance(str_a, str_b)
  }
end

.hyphenated_ssn(ssn) ⇒ Object 



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# File 'lib/string_helpers.rb', line 16

def hyphenated_ssn(ssn)
  return if ssn.blank?

  "#{ssn[0..2]}-#{ssn[3..4]}-#{ssn[5..8]}"
end

.mask_sensitive(string) ⇒ Object 



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# File 'lib/string_helpers.rb', line 12

def mask_sensitive(string)
  string&.gsub(/.(?=.{4})/, '*')
end