Class: Loom::Runner

Inherits:
Object
  • Object
show all
Includes:
DSL
Defined in:
lib/loom/runner.rb

Constant Summary collapse

PatternExecutionError = 
Class.new Loom::LoomError
FailFastExecutionError = 
Class.new PatternExecutionError

Constants included from DSL

DSL::SSHConnectionError, DSL::UnexpectedHostError

Instance Method Summary collapse

Methods included from DSL

#on_host

Constructor Details

#initialize(loom_config, pattern_slugs = [], other_facts = {}) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/loom/runner.rb', line 9

def initialize(loom_config, pattern_slugs=[], other_facts={})
  @pattern_slugs = pattern_slugs
  @loom_config = loom_config
  @other_facts = other_facts

  @run_failures = []
  @result_reports = []

  # these are initialized in +load+
  @inventory_list = nil
  @active_hosts = nil
  @pattern_refs = nil
  @mod_loader = nil

  Loom.log.debug1(self) do
    "initialized runner with config => #{loom_config.dump}"
  end

  @caught_sig_int = false
end

Instance Method Details

#run(dry_run) ⇒ Object 



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# File 'lib/loom/runner.rb', line 30

def run(dry_run)
  install_signal_traps

  begin
    load

    if @pattern_refs.empty?
      Loom.log.warn "no patterns given, there's no work to do"
      return
    end
    if @active_hosts.empty?
      Loom.log.warn "no hosts in the active inventory"
      return
    end

    hostnames = @active_hosts.map(&:hostname)
    Loom.log.info do
      "executing patterns #{@pattern_slugs} across hosts #{hostnames}"
    end

    run_internal dry_run

    unless @run_failures.empty?
      raise PatternExecutionError, @run_failures
    end
  rescue Loom::Trap::SignalExit => e
    Loom.log.error "exiting on signal  => #{e.signal}"
    # Exit with the signal code or 40 for unknown Signal
    code = Signal.list[e.signal] || 40
    exit code
  rescue PatternExecutionError => e
    num_patterns_failed = @run_failures.size
    Loom.log.error "error executing #{num_patterns_failed} patterns => #{e}"
    Loom.log.debug e.backtrace.join "\n"
    exit 100 + num_patterns_failed
  rescue Loom::LoomError => e
    Loom.log.error "loom error => #{e.inspect}"
    exit 98
  rescue => e
    Loom.log.fatal "fatal error => #{e.inspect}"
    Loom.log.fatal e.backtrace.join "\n\t"
    exit 99
  end
end