Class: Shiba::Fuzzer

Inherits:
Object
  • Object
show all
Defined in:
lib/shiba/fuzzer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(connection) ⇒ Fuzzer

Returns a new instance of Fuzzer.



6
7
8
 
# File 'lib/shiba/fuzzer.rb', line 6

def initialize(connection)
  @connection = connection
end

Instance Attribute Details

#connection ⇒ Object (readonly)

Returns the value of attribute connection.



10
11
12
 
# File 'lib/shiba/fuzzer.rb', line 10

def connection
  @connection
end

Instance Method Details

#fetch_index ⇒ Object 



28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/shiba/fuzzer.rb', line 28

def fetch_index
  stats = Shiba::IndexStats.new
  records = connection.fetch_indexes
  tables = {}
  records.each do |h|
    h.keys.each { |k| h[k.downcase] = h.delete(k) }
    h["cardinality"] = h["cardinality"].to_i

    stats.add_index_column(h['table_name'], h['index_name'], h['column_name'], h['cardinality'], h['non_unique'] == 0)
  end

  connection.each_column_size do |table, column, size|
    stats.set_column_size(table, column, size)
  end

  stats
end

#fuzz! ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/shiba/fuzzer.rb', line 12

def fuzz!
  @index_stats = fetch_index
  table_sizes = guess_table_sizes

  @index_stats.tables.each do |name, table|
    table.count = table_sizes[name]
    table.indexes.each do |name, index|
      index.columns.each do |column|
        column.rows_per = index.unique ? 1 : 2
      end
    end
  end

  @index_stats
end