Class: Sfn::Command::Events

Inherits:
Sfn::Command
  • Object
show all
Includes:
Sfn::CommandModule::Base
Defined in:
lib/sfn/command/events.rb

Overview

Events command

Constant Summary

Constants inherited from Sfn::Command

CONFIG_BASE_NAME, VALID_CONFIG_EXTENSIONS

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Sfn::CommandModule::Base

included

Methods inherited from Sfn::Command

#config, #initialize

Methods included from Sfn::CommandModule::Callbacks

#api_action!, #callbacks_for, #run_callbacks_for

Constructor Details

This class inherits a constructor from Sfn::Command

Instance Attribute Details

#stack ⇒ Miasma::Models::Orchestration::Stack (readonly) 



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# File 'lib/sfn/command/events.rb', line 11

def stack
  @stack
end

Instance Method Details

#allowed_attributes ⇒ Array<String> 



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# File 'lib/sfn/command/events.rb', line 116

def allowed_attributes
  result = super
  unless(@stacks.size > 1)
    result.delete('stack_name')
  end
  result
end

#default_attributes ⇒ Array<String> 



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# File 'lib/sfn/command/events.rb', line 111

def default_attributes
  %w(stack_name time resource_logical_id resource_status resource_status_reason)
end

#discover_stacks(stack) ⇒ Object

Discover stacks defined within the resources of given stack



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# File 'lib/sfn/command/events.rb', line 106

def discover_stacks(stack)
  @stacks = [stack] + stack.nested_stacks.reverse
end

#execute! ⇒ Object

Run the events list action



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# File 'lib/sfn/command/events.rb', line 14

def execute!
  name_required!
  name = name_args.first
  ui.info "Events for Stack: #{ui.color(name, :bold)}\n"
  @seen_events = []
  @stack = provider.stack(name)
  if(stack)
    api_action!(:api_stack => stack) do
      table = ui.table(self) do
        table(:border => false) do
          events = get_events
          row(:header => true) do
            allowed_attributes.each do |attr|
              width_val = events.map{|e| e[attr].to_s.length}.push(attr.length).max + 2
              width_val = width_val > 70 ? 70 : width_val < 20 ? 20 : width_val
              column attr.split('_').map(&:capitalize).join(' '), :width => width_val
            end
          end
          events.each do |event|
            row do
              allowed_attributes.each do |attr|
                column event[attr]
              end
            end
          end
        end
      end.display
      if(config[:poll])
        while(stack.reload.in_progress?)
          to_wait = config.fetch(:poll_wait_time, 10).to_f
          while(to_wait > 0)
            sleep(0.1)
            to_wait -= 0.1
          end
          stack.resources.reload
          table.display
        end
      end
    end
  else
    ui.fatal "Failed to locate requested stack: #{ui.color(name, :bold, :red)}"
    raise "Failed to locate stack: #{name}!"
  end
end

#get_events(*args) ⇒ Array<Hash>

Fetch events from stack



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# File 'lib/sfn/command/events.rb', line 64

def get_events(*args)
  stack_events = discover_stacks(stack).map do |i_stack|
    begin
      if(@initial_complete && i_stack.in_progress?)
        i_events = i_stack.events.update!
      else
        i_events = i_stack.events.all
      end
    rescue => e
      if(e.class.to_s.start_with?('Errno'))
        ui.warn "Connection error encountered: #{e.message} (retrying)"
        ui.debug "#{e.class}: #{e}\n#{e.backtrace.join("\n")}"
        sleep(5)
        retry
      end
    end
    i_events.map do |e|
      e.attributes.merge(:stack_name => i_stack.name).to_smash
    end
  end.flatten.compact.find_all{|e| e[:time] }.reverse
  stack_events.delete_if{|evt| @seen_events.include?(evt)}
  @seen_events.concat(stack_events)
  unless(@initial_complete)
    stack_events = stack_events.sort_by{|e| e[:time] }
    unless(config[:all_events])
      start_index = stack_events.rindex do |item|
        item[:stack_name] == stack.name &&
          item[:resource_state].to_s.end_with?('in_progress') &&
          item[:resource_status_reason].to_s.downcase.include?('user init')
      end
      if(start_index)
        stack_events.slice!(0, start_index)
      end
    end
    @initial_complete = true
  end
  stack_events
end