Class: TestIds::Allocator

Inherits:
Object
  • Object
show all
Defined in:
lib/test_ids/allocator.rb

Overview

The allocator is responsible for assigning new numbers and keeping a record of existing assignments.

There is one allocator instance per configuration, and each has its own database file.

Constant Summary collapse

STORE_FORMAT_REVISION = 
2

Instance Method Summary collapse

Constructor Details

#initialize(configuration) ⇒ Allocator

Returns a new instance of Allocator.



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# File 'lib/test_ids/allocator.rb', line 11

def initialize(configuration)
  @config = configuration
end

Instance Method Details

#allocate(instance, options) ⇒ Object

Main method to inject generated bin and test numbers, the given options instance is modified accordingly



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# File 'lib/test_ids/allocator.rb', line 134

def allocate(instance, options)
  orig_options = options.dup
  clean(options)
  name = extract_test_name(instance, options)

  nones = []

  # Record any :nones that are present for later
  [:bin, :softbin, :number].each do |type|
    nones << type if options[type] == :none
    config(type).allocator.instance_variable_set('@needs_regenerated', {})
  end

  allocation_order(options).each do |type|
    config(type).allocator.send(:_allocate, type, name, options)
  end

  # Turn any :nones into nils in the returned options
  nones.each do |type|
    options[type] = nil
    options["#{type}_size"] = nil
  end

  options
end

#allocation_order(options) ⇒ Object

Returns an array containing :bin, :softbin, :number in the order that they should be calculated in order to fulfil the requirements of the current configuration and the given options. If an item is not required (e.g. if set to :none in the options), then it will not be present in the array.



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# File 'lib/test_ids/allocator.rb', line 91

def allocation_order(options)
  items = []
  items_required = 0
  if allocation_required?(:bin, options) ||
     (allocation_required?(:softbin, options) && config(:softbin).softbins.needs?(:bin)) ||
     (allocation_required?(:number, options) && config(:number).numbers.needs?(:bin))
    items_required += 1
  else
    bin_done = true
  end
  if allocation_required?(:softbin, options) ||
     (allocation_required?(:bin, options) && config(:bin).bins.needs?(:softbin)) ||
     (allocation_required?(:number, options) && config(:number).numbers.needs?(:softbin))
    items_required += 1
  else
    softbin_done = true
  end
  if allocation_required?(:number, options) ||
     (allocation_required?(:bin, options) && config(:bin).bins.needs?(:number)) ||
     (allocation_required?(:softbin, options) && config(:softbin).softbins.needs?(:number))
    items_required += 1
  else
    number_done = true
  end
  items_required.times do |i|
    if !bin_done && (!config(:bin).bins.needs?(:softbin) || softbin_done) && (!config(:bin).bins.needs?(:number) || number_done)
      items << :bin
      bin_done = true
    elsif !softbin_done && (!config(:softbin).softbins.needs?(:bin) || bin_done) && (!config(:softbin).softbins.needs?(:number) || number_done)
      items << :softbin
      softbin_done = true
    elsif !number_done && (!config(:number).numbers.needs?(:bin) || bin_done) && (!config(:number).numbers.needs?(:softbin) || softbin_done)
      items << :number
      number_done = true
    else
      fail "Couldn't work out whether to generate next on iteration #{i} of #{items_required}, already picked: #{items}"
    end
  end
  items
end

#clear(options) ⇒ Object

Clear the :bins, :softbins and/or :numbers by setting the options for each item to true



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# File 'lib/test_ids/allocator.rb', line 291

def clear(options)
  if options[:softbin] || options[:softbins]
    store['assigned']['softbins'] = {}
    store['manually_assigned']['softbins'] = {}
    store['pointers']['softbins'] = nil
    store['references']['softbins'] = {}
  end
  if options[:bin] || options[:bins]
    store['assigned']['bins'] = {}
    store['manually_assigned']['bins'] = {}
    store['pointers']['bins'] = nil
    store['references']['bins'] = {}
  end
  if options[:number] || options[:numbers]
    store['assigned']['numbers'] = {}
    store['manually_assigned']['numbers'] = {}
    store['pointers']['numbers'] = nil
    store['references']['numbers'] = {}
  end
end

#config(type = nil) ⇒ Object 



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# File 'lib/test_ids/allocator.rb', line 15

def config(type = nil)
  if type
    type = type.to_s
    type.chop! if type[-1] == 's'
    TestIds.send("#{type}_config") || @config
  else
    @config
  end
end

#file ⇒ Object

Returns a path to the file that will be used to store the allocated bins/numbers, returns nil if remote storage not enabled



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# File 'lib/test_ids/allocator.rb', line 355

def file
  TestIds.database_file(id)
end

#id ⇒ Object 



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# File 'lib/test_ids/allocator.rb', line 359

def id
  config.id
end

#load_configuration_from_store ⇒ 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/test_ids/allocator.rb', line 364

def load_configuration_from_store
  config.load_from_serialized(store['configuration']) if store['configuration']
end

#merge_store(other_store) ⇒ Object

Merge the given other store into the current one, it is assumed that both are formatted from the same (latest) revision



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# File 'lib/test_ids/allocator.rb', line 162

def merge_store(other_store)
  store['pointers'] = store['pointers'].merge(other_store['pointers'])
  @last_bin = store['pointers']['bins']
  @last_softbin = store['pointers']['softbins']
  @last_number = store['pointers']['numbers']
  store['assigned']['bins'] = store['assigned']['bins'].merge(other_store['assigned']['bins'])
  store['assigned']['softbins'] = store['assigned']['softbins'].merge(other_store['assigned']['softbins'])
  store['assigned']['numbers'] = store['assigned']['numbers'].merge(other_store['assigned']['numbers'])
  store['manually_assigned']['bins'] = store['manually_assigned']['bins'].merge(other_store['manually_assigned']['bins'])
  store['manually_assigned']['softbins'] = store['manually_assigned']['softbins'].merge(other_store['manually_assigned']['softbins'])
  store['manually_assigned']['numbers'] = store['manually_assigned']['numbers'].merge(other_store['manually_assigned']['numbers'])
  store['references']['bins'] = store['references']['bins'].merge(other_store['references']['bins'])
  store['references']['softbins'] = store['references']['softbins'].merge(other_store['references']['softbins'])
  store['references']['numbers'] = store['references']['numbers'].merge(other_store['references']['numbers'])
end

#next_in_range(range, options) ⇒ Object

Allocates a softbin number from the range specified in the test flow It also keeps a track of the last softbin assigned out from a particular range and uses that to increment the pointers accordingly. If a numeric number is passed to the softbin, it uses that number. The configuration for the TestId plugin needs to pass in the bin number and the options from the test flow For this method to work as intended.



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# File 'lib/test_ids/allocator.rb', line 31

def next_in_range(range, options)
  range_item(range, options)
end

#range_item(range, options) ⇒ Object 



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# File 'lib/test_ids/allocator.rb', line 35

def range_item(range, options)
  orig_options = options.dup
  # Now Check if the database (JSON file) exists.
  # If file exists, load the database and create the alias for ['pointer']['ranges']
  if file && File.exist?(file)
    lines = File.readlines(file)
    # Remove any header comment lines since these are not valid JSON
    lines.shift while lines.first =~ /^\/\// && !lines.empty?
    s = JSON.load(lines.join("\n"))
    rangehash = s['pointers']['ranges']
    if rangehash.nil?
      rangehash = store['pointers']['ranges'] ||= {}
    else
      rangehash = Hash[rangehash.map { |k, v| [k.to_sym, v] }]
    end
  else
    # Create an alias for the databse that stores the pointers per range
    rangehash = store['pointers']['ranges'] ||= {}
  end
  # Check the database to see if the passed in range has already been included in the database hash
  if rangehash.key?(:"#{range}")
    # Read out the database hash to see what the last_softbin given out was for that range.
    # This hash is updated whenever a new softbin is assigned, so it should have the updated values for each range.
    previous_assigned_value = rangehash[:"#{range}"].to_i
    # Now calculate the new pointer.
    @pointer = previous_assigned_value - range.min
    # Check if the last_softbin given out is the same as the range[@pointer],
    # if so increment pointer by softbin size, default size is 1, config.softbins.size is configurable.
    # from example above, pointer was calculated as 1,range[1] is 10101 and is same as last_softbin, so pointer is incremented
    # and new value is assigned to the softbin.
    if previous_assigned_value == range.to_a[@pointer]
      @pointer += options[:size]
      assigned_value = range.to_a[@pointer]
    else
      # Because of the pointer calculations above, I don't think it will ever reach here, has not in my test cases so far!
      assigned_value = range.to_a[@pointer]
    end
    # Now update the database pointers to point to the lastest assigned softbin for a given range.
    rangehash.merge!(:"#{range}" => "#{range.to_a[@pointer]}")
  else
    # This is the case for a brand new range that has not been passed before
    # We start from the first value as the assigned softbin and update the database to reflect.
    @pointer = 0
    rangehash.merge!(:"#{range}" => "#{range.to_a[@pointer]}")
    assigned_value = range.to_a[@pointer]
  end
  unless !assigned_value.nil? && assigned_value.between?(range.min, range.max)
    Origen.log.error 'Assigned value not in range'
    fail
  end
  assigned_value
end

#repair(options = {}) ⇒ Object 



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# File 'lib/test_ids/allocator.rb', line 233

def repair(options = {})
  #####################################################################
  # Add any numbers that are missing from the references pool if the
  # allocator has moved onto the reclamation phase
  #####################################################################
  { 'bins' => 'bins', 'softbins' => 'softbins', 'numbers' => 'test_numbers' }.each do |type, name|
    if !config.send(type).function? && store['pointers'][type] == 'done'
      Origen.log.info "Checking for missing #{name}..."
      recovered = add_missing_references(config.send, store['references'][type])
      if recovered == 0
        Origen.log.info "  All #{name} are already available."
      else
        Origen.log.success "  Another #{recovered} #{name} have been made available!"
      end
    end
  end

  #####################################################################
  # Check that all assignments are valid based on the current config,
  # if not remove them and they will be re-allocated next time
  #####################################################################
  { 'bins' => 'bins', 'softbins' => 'softbins', 'numbers' => 'test_numbers' }.each do |type, name|
    next if config.send(type).function?
    Origen.log.info "Checking all #{name} assignments are valid..."
    also_remove_from = []
    if type == 'bin'
      also_remove_from << store['assigned']['softbins'] if config.softbins.function?
      also_remove_from << store['assigned']['numbers'] if config.numbers.function?
    elsif type == 'softbin'
      also_remove_from << store['assigned']['numbers'] if config.numbers.function?
    else
      also_remove_from << store['assigned']['softbins'] if config.softbins.function?
    end
    removed = remove_invalid_assignments(config.send(type), store['assigned'][type], store['manually_assigned'][type], also_remove_from)
    if removed == 0
      Origen.log.info "  All #{name} assignments are already valid."
    else
      Origen.log.success "  #{removed} #{name} assignments have been removed!"
    end
  end

  #####################################################################
  # Check that all references are valid based on the current config,
  # if not remove them
  #####################################################################
  { 'bins' => 'bins', 'softbins' => 'softbins', 'numbers' => 'test_numbers' }.each do |type, name|
    next if config.send(type).function?
    Origen.log.info "Checking all #{name} references are valid..."
    removed = remove_invalid_references(config.send(type), store['references'][type], store['manually_assigned'][type])
    if removed == 0
      Origen.log.info "  All #{name} references are already valid."
    else
      Origen.log.success "  #{removed} #{name} references have been removed!"
    end
  end
end

#save ⇒ Object

Saves the current allocator state to the repository



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# File 'lib/test_ids/allocator.rb', line 313

def save
  if file
    # Ensure the current store has been loaded before we try to re-write it, this
    # is necessary if the program generator has crashed before creating a test
    store
    store['configuration'] = config
    p = Pathname.new(file)
    FileUtils.mkdir_p(p.dirname)
    File.open(p, 'w') do |f|
      f.puts '// The structure of this file is as follows:'
      f.puts '//'
      f.puts '//  {'
      f.puts '//    // A revision number used by TestIDs to identify the format of this file'
      f.puts "//    'format_revision'   => STORE_FORMAT_REVISION,"
      f.puts '//'
      f.puts '//    // Captures the configuration that was used the last time this database was updated.'
      f.puts "//    'configuration'          => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} },"
      f.puts '//'
      f.puts '//    // If some number are still to be allocated, these point to the last number given out.'
      f.puts '//    // If all numbers have been allocated and we are now on the reclamation phase, the pointer'
      f.puts '//    // will contain "done".'
      f.puts "//    'pointers'          => { 'bins' => nil, 'softbins' => nil, 'numbers' => nil, 'ranges' => nil },"
      f.puts '//'
      f.puts '//    // This is the record of all numbers which have been previously assigned.'
      f.puts "//    'assigned'          => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} },"
      f.puts '//'
      f.puts '//    // This is a record of any numbers which have been manually assigned.'
      f.puts "//    'manually_assigned' => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} },"
      f.puts '//'
      f.puts '//    // This contains all assigned numbers with a timestamp of when they were last referenced.'
      f.puts '//    // When numbers need to be reclaimed, they will be taken from the bottom of this list, i.e.'
      f.puts '//    // the numbers which have not been used for the longest time, e.g. because the test they'
      f.puts '//    // were assigned to has since been removed.'
      f.puts "//    'references'        => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} }"
      f.puts '//  }'
      f.puts JSON.pretty_generate(store)
    end
  end
end

#store ⇒ Object 



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# File 'lib/test_ids/allocator.rb', line 178

def store
  @store ||= begin
    if file && File.exist?(file)
      lines = File.readlines(file)
      # Remove any header comment lines since these are not valid JSON
      lines.shift while lines.first =~ /^\/\// && !lines.empty?
      s = JSON.load(lines.join("\n"))
    end
    if s
      unless s['format_revision']
        # Upgrade the original store format
        t = { 'bin' => {}, 'softbin' => {}, 'number' => {} }
        s['tests'].each do |name, numbers|
          t['bin'][name] = { 'number' => numbers['bin'], 'size' => 1 }
          t['softbin'][name] = { 'number' => numbers['softbin'], 'size' => 1 }
          t['number'][name] = { 'number' => numbers['number'], 'size' => 1 }
        end
        s = {
          'format_revision'   => 1,
          'assigned'          => t,
          'manually_assigned' => s['manually_assigned'],
          'pointers'          => s['pointers'],
          'references'        => s['references']
        }
      end
      # Change the keys to plural versions, this makes it easier to search for in the file
      # since 'number' is used within individual records
      if s['format_revision'] == 1
        s = {
          'format_revision'   => 2,
          'configuration'     => nil,
          'pointers'          => { 'bins' => s['pointers']['bin'], 'softbins' => s['pointers']['softbin'], 'numbers' => s['pointers']['number'] },
          'assigned'          => { 'bins' => s['assigned']['bin'], 'softbins' => s['assigned']['softbin'], 'numbers' => s['assigned']['number'] },
          'manually_assigned' => { 'bins' => s['manually_assigned']['bin'], 'softbins' => s['manually_assigned']['softbin'], 'numbers' => s['manually_assigned']['number'] },
          'references'        => { 'bins' => s['references']['bin'], 'softbins' => s['references']['softbin'], 'numbers' => s['references']['number'] }
        }
      end

      @last_bin = s['pointers']['bins']
      @last_softbin = s['pointers']['softbins']
      @last_number = s['pointers']['numbers']
      s
    else
      {
        'format_revision'   => STORE_FORMAT_REVISION,
        'configuration'     => nil,
        'pointers'          => { 'bins' => nil, 'softbins' => nil, 'numbers' => nil },
        'assigned'          => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} },
        'manually_assigned' => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} },
        'references'        => { 'bins' => {}, 'softbins' => {}, 'numbers' => {} }
      }
    end
  end
end