Class: Hotdog::Commands::Down

Inherits:
BaseCommand show all
Defined in:
lib/hotdog/commands/down.rb

Instance Attribute Summary

Attributes inherited from BaseCommand

#application, #logger, #options, #persistent_db_path

Instance Method Summary collapse

Methods inherited from BaseCommand

#execute, #fixed_string?, #initialize, #parse_options, #reload

Constructor Details

This class inherits a constructor from Hotdog::Commands::BaseCommand

Instance Method Details

#define_options(optparse, options = {}) ⇒ Object 



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# File 'lib/hotdog/commands/down.rb', line 6

def define_options(optparse, options={})
  default_option(options, :downtime, 86400)
  default_option(options, :retry, 5)
  default_option(options, :start, Time.new)
  optparse.on("--downtime DURATION") do |v|
    case v
    when /\A\s*(\d+)\s*(?:seconds?|sec|S)\s*\z/
      options[:downtime] = $1.to_i
    when /\A\s*(\d+)\s*(?:minutes?|min|M)\s*\z/
      options[:downtime] = $1.to_i * 60
    when /\A\s*(\d+)\s*(?:hours?|H)\s*\z/
      options[:downtime] = $1.to_i * 60 * 60
    when /\A\s*(\d+)\s*(?:days?|d)\s*\z/
      options[:downtime] = $1.to_i * 60 * 60 * 24
    when /\A\s*(\d+)\s*(?:weeks?|w)\s*\z/
      options[:downtime] = $1.to_i * 60 * 60 * 24 * 7
    when /\A\s*(\d+)\s*(?:months?|m)\s*\z/i
      options[:downtime] = $1.to_i * 60 * 60 * 24 * 30
    when /\A\s*(\d+)\s*(?:years?|y)\s*\z/i
      options[:downtime] = $1.to_i * 60 * 60 * 24 * 365
    when /\A\s*(\d+)\s*\z/
      options[:downtime] = $1.to_i
    else
      raise(OptionParser::InvalidArgument.new("downtime argument value is invalid: #{v}"))
    end
  end
  optparse.on("--retry NUM") do |v|
    options[:retry] = v.to_i
  end
  optparse.on("--retry-delay SECONDS") do |v|
    options[:retry_delay] = v.to_i
  end
  optparse.on("--start TIME") do |v|
    options[:start] = Time.parse(v)
  end
end

#run(args = [], options = {}) ⇒ Object 



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# File 'lib/hotdog/commands/down.rb', line 43

def run(args=[], options={})
  scopes = args.map { |arg|
    if arg.index(":").nil?
      "host:#{arg}"
    else
      arg
    end
  }
  hosts = scopes.select { |scope| scope.start_with?("host:") }.map { |scope|
    scope.slice("host:".length, scope.length)
  }
  if 0 < hosts.length
    # Try reloading database after error as a workaround for nested transaction.
    with_retry(error_handler: ->(error) { reload }) do
      if open_db
        @db.transaction do
          sqlite_limit_compound_select = options[:sqlite_limit_compound_select] || SQLITE_LIMIT_COMPOUND_SELECT
          hosts.each_slice(sqlite_limit_compound_select - 1) do |hosts|
            execute_db(@db, "DELETE FROM hosts_tags WHERE tag_id IN ( SELECT id FROM tags WHERE name = '@status' ) AND host_id IN ( SELECT id FROM hosts WHERE name IN (%s) );" % hosts.map { "?" }.join(", "), hosts)
            execute_db(@db, "UPDATE hosts SET status = ? WHERE name IN (%s);" % hosts.map { "?" }.join(", "), [STATUS_STOPPING] + hosts)
          end
          associate_tag_hosts(@db, "@status:#{application.status_name(STATUS_STOPPING)}", hosts)
        end
      end
    end
  end
  scopes.each do |scope|
    with_retry(options) do
      @source_provider.schedule_downtime(scope, options)
    end
  end
end