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)

Returns:

  • (Miasma::Models::Orchestration::Stack) 


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# File 'lib/sfn/command/events.rb', line 10

def stack
  @stack
end

Instance Method Details

#allowed_attributes ⇒ Array<String>

Returns allowed attributes for events.

Returns:

  • (Array<String>) —

    allowed attributes for events



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# File 'lib/sfn/command/events.rb', line 121

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

#default_attributes ⇒ Array<String>

Returns default attributes for events.

Returns:

  • (Array<String>) —

    default attributes for events



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

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

Parameters:

  • stack (Miasma::Models::Orchestration::Stack) 


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

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 13

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

Parameters:

  • stack (Miasma::Models::Orchestration::Stack)
  • last_id (String) —

    only return events after this ID

Returns:

  • (Array<Hash>) 


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# File 'lib/sfn/command/events.rb', line 63

def get_events(*args)
  stack_events = discover_stacks(stack).map do |i_stack|
    i_events = []
    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")}"
      else
        ui.error "Unexpected error received fetching events: #{e.message}"
        ui.debug "#{e.class}: #{e}\n#{e.backtrace.join("\n")}"
      end
      sleep(5)
      retry
    end
    if i_events
      i_events.map do |e|
        e.attributes.merge(:stack_name => i_stack.name).to_smash
      end
    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