Module: PromptSanitizer::Audit

Defined in:
lib/prompt_sanitizer/audit/base.rb,
lib/prompt_sanitizer/audit/memory_audit_log.rb

Defined Under Namespace

Classes: AuditEvent, Base, MemoryAuditLog

Class Method Summary collapse

Class Method Details

.hash_value(value) ⇒ Object

Compute a SHA-256 prefix hash of a PII value for safe audit storage.



29
30
31
 
# File 'lib/prompt_sanitizer/audit/base.rb', line 29

def self.hash_value(value)
  Digest::SHA256.hexdigest(value.to_s)[0, 16]
end

.now_iso ⇒ Object

Return the current UTC time as an ISO-8601 string.



34
35
36
 
# File 'lib/prompt_sanitizer/audit/base.rb', line 34

def self.now_iso
  Time.now.utc.iso8601
end

.parse_since(since) ⇒ Object

Parse a "since" argument into a comparable UTC Time.

Accepts:

  • nil → no cutoff
  • Integer → seconds ago
  • "7d" → 7 days ago
  • "12h" → 12 hours ago
  • Time → as-is
  • ISO-8601 String → parsed


47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'lib/prompt_sanitizer/audit/base.rb', line 47

def self.parse_since(since)
  return nil if since.nil?
  return since if since.is_a?(Time)

  if since.is_a?(String)
    if since =~ /\A(\d+)d\z/
      Time.now.utc - (Regexp.last_match(1).to_i * 86_400) - 1
    elsif since =~ /\A(\d+)h\z/
      Time.now.utc - (Regexp.last_match(1).to_i * 3_600) - 1
    else
      Time.parse(since).utc
    end
  elsif since.is_a?(Integer)
    Time.now.utc - since
  end
end