Class: TingYun::Agent::Database::Obfuscator

Inherits:
Object
  • Object
show all
Includes:
Singleton, ObfuscationHelpers
Defined in:
lib/ting_yun/agent/database/obfuscator.rb

Overview

混淆器

Defined Under Namespace

Modules: ObfuscationHelpers

Constant Summary collapse

QUERY_TOO_LARGE_MESSAGE = 
"Query too large (over 16k characters) to safely obfuscate"
FAILED_TO_OBFUSCATE_MESSAGE = 
"Failed to obfuscate SQL query - quote characters remained after obfuscation"

Constants included from ObfuscationHelpers

ObfuscationHelpers::CASSANDRA_COMPONENTS_REGEX, ObfuscationHelpers::CLEANUP_REGEX, ObfuscationHelpers::COMPONENTS_REGEX_MAP, ObfuscationHelpers::DIALECT_COMPONENTS, ObfuscationHelpers::FALLBACK_REGEX, ObfuscationHelpers::LABEL_LINE_REGEX, ObfuscationHelpers::MYSQL_COMPONENTS_REGEX, ObfuscationHelpers::ORACLE_COMPONENTS_REGEX, ObfuscationHelpers::PLACEHOLDER, ObfuscationHelpers::POSTGRES_COMPONENTS_REGEX, ObfuscationHelpers::QUOTED_STRINGS_REGEX, ObfuscationHelpers::SQLITE_COMPONENTS_REGEX

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from ObfuscationHelpers

#detect_unmatched_pairs, generate_regex, #obfuscate, #obfuscate_postgres_explain, #obfuscate_single_quote_literals

Constructor Details

#initialize ⇒ Obfuscator

Returns a new instance of Obfuscator.



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# File 'lib/ting_yun/agent/database/obfuscator.rb', line 13

def initialize
  reset
end

Instance Attribute Details

#obfuscator ⇒ Object (readonly)

Returns the value of attribute obfuscator.



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# File 'lib/ting_yun/agent/database/obfuscator.rb', line 11

def obfuscator
  @obfuscator
end

Instance Method Details

#default_sql_obfuscator(sql) ⇒ Object 



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# File 'lib/ting_yun/agent/database/obfuscator.rb', line 24

def default_sql_obfuscator(sql)
  stmt = sql.kind_of?(Statement) ? sql : Statement.new(sql)

  if stmt.sql[-3,3] == '...'
    return QUERY_TOO_LARGE_MESSAGE
  end

  obfuscate(stmt.sql, stmt.adapter).to_s
end

#reset ⇒ Object 



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# File 'lib/ting_yun/agent/database/obfuscator.rb', line 17

def reset
  @obfuscator = method(:default_sql_obfuscator)
end