Class: Cosmos::TimelineWorker

Inherits:
Object
  • Object
show all
Defined in:
lib/cosmos/microservices/timeline_microservice.rb

Overview

The Timeline worker is a very simple thread pool worker. Once the timeline manager has pushed a job to the schedule one of these workers will run the CMD (command) or SCRIPT (script) or anything that could be expanded in the future.

Instance Method Summary collapse

Constructor Details

#initialize(name:, scope:, queue:) ⇒ TimelineWorker

Returns a new instance of TimelineWorker.



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 35

def initialize(name:, scope:, queue:)
  @timeline_name = name
  @scope = scope
  @queue = queue
  @authentication = generate_auth()
end

Instance Method Details

#clear_expired(activity) ⇒ Object 



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 111

def clear_expired(activity)
  begin
    ActivityModel.range_destroy(name: @timeline_name, scope: @scope, min: activity.start, max: activity.stop)
    activity.add_event(status: 'completed')
  rescue StandardError => e
    Logger.error "#{@timeline_name} clear_expired failed > #{activity.as_json} #{e.message}"
  end
end

#generate_auth ⇒ Object

generate the auth object



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 43

def generate_auth
  if ENV['COSMOS_API_USER'].nil? || ENV['COSMOS_API_CLIENT'].nil?
    return CosmosAuthentication.new()
  else
    return CosmosKeycloakAuthentication.new(ENV['COSMOS_KEYCLOAK_URL'])
  end
end

#run ⇒ Object 



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 51

def run
  Logger.info "#{@timeline_name} timeline worker running"
  loop do
    activity = @queue.pop
    break if activity.nil?

    run_activity(activity)
  end
  Logger.info "#{@timeline_name} timeine worker exiting"
end

#run_activity(activity) ⇒ Object 



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 62

def run_activity(activity)
  case activity.kind.upcase
  when 'COMMAND'
    run_command(activity)
  when 'SCRIPT'
    run_script(activity)
  when 'EXPIRE'
    clear_expired(activity)
  else
    Logger.error "Unknown kind passed to microservice #{@timeline_name}: #{activity.as_json}"
  end
end

#run_command(activity) ⇒ Object 



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 75

def run_command(activity)
  Logger.info "#{@timeline_name} run_command > #{activity.as_json}"
  begin
    cmd_no_hazardous_check(activity.data['command'], scope: @scope)
    activity.commit(status: 'completed', fulfillment: true)
  rescue StandardError => e
    activity.commit(status: 'failed', message: e.message)
    Logger.error "#{@timeline_name} run_cmd failed > #{activity.as_json}, #{e.message}"
  end
end

#run_script(activity) ⇒ Object 



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# File 'lib/cosmos/microservices/timeline_microservice.rb', line 86

def run_script(activity)
  Logger.info "#{@timeline_name} run_script > #{activity.as_json}"
  begin
    request = Net::HTTP::Post.new(
      "/script-api/scripts/#{activity.data['script']}/run?scope=#{@scope}",
      'Content-Type' => 'application/json',
      'Authorization' => @authentication.token()
    )
    request.body = JSON.generate({
      'scope' => @scope,
      'environment' => activity.data['environment'],
      'timeline' => @timeline_name,
      'id' => activity.start
    })
    hostname = ENV['COSMOS_SCRIPT_HOSTNAME'] || 'cosmos-script-runner-api'
    response = Net::HTTP.new(hostname, 2902).request(request)
    raise "failed to call #{hostname}, for script: #{activity.data['script']}, response code: #{response.code}" if response.code != '200'

    activity.commit(status: 'completed', message: "#{activity.data['script']} => #{response.body}", fulfillment: true)
  rescue StandardError => e
    activity.commit(status: 'failed', message: e.message)
    Logger.error "#{@timeline_name} run_script failed > #{activity.as_json.to_s}, #{e.message}"
  end
end