Class: Atatus::SqlSummarizer Private

Inherits:
Object
  • Object
show all
Defined in:
lib/atatus/sql_summarizer.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Constant Summary collapse

DEFAULT =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

'SQL'
TABLE_REGEX =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

%{["'`]?([A-Za-z0-9_]+)["'`]?}
REGEXES =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

{
  /^BEGIN/iu => 'BEGIN',
  /^COMMIT/iu => 'COMMIT',
  /^SELECT .* FROM #{TABLE_REGEX}/iu => 'SELECT FROM ',
  /^INSERT INTO #{TABLE_REGEX}/iu => 'INSERT INTO ',
  /^UPDATE #{TABLE_REGEX}/iu => 'UPDATE ',
  /^DELETE FROM #{TABLE_REGEX}/iu => 'DELETE FROM '
}.freeze
FORMAT =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

'%s%s'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cache ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/atatus/sql_summarizer.rb', line 39

def self.cache
  @cache ||= Util::LruCache.new
end

Instance Method Details

#summarize(sql) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/atatus/sql_summarizer.rb', line 43

def summarize(sql)
  sql = sql.encode('utf-8', invalid: :replace, undef: :replace)
  self.class.cache[sql] ||=
    REGEXES.find do |regex, sig|
      if (match = sql[0...1000].match(regex))
        break format(FORMAT, sig, match[1] && match[1].gsub(/["']/, ''))
      end
    end || DEFAULT
end