Class: DreamOps::OpsWorksDeployer

Inherits:
BaseDeployer show all
Defined in:
lib/dream-ops/deployment/opsworks.rb

Instance Method Summary collapse

Methods inherited from BaseDeployer

#__bail_with_fatal_error, #__get_cookbook_paths, #build_cookbook, #cleanup_cookbooks, #deploy, deployer_method

Instance Method Details

#__cookbook_in_array(cb, cookbooks) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 254

def __cookbook_in_array(cb, cookbooks)
  return cookbooks.any? {|c|
    c[:cookbook_filename] == cb[:cookbook_filename] and c[:bucket] == cb[:bucket]
  }
end

#analyze(stack_ids) ⇒ Hash

Analyze the OpsWorks stacks for deployment

Returns:

  • (Hash) —

    a hash containing cookbooks that need to be built/updated and deploy targets

    Example:

    {
  :cookbooks => [
    {
      :bucket => "chef-app",
      :cookbook_filename => "chef-app-dev.zip",
      :sha_filename => "chef-app-dev_SHA.txt",
      :name => "chef-app",
      :path => "./chef",
      :local_sha => "7bfa19491170563f422a321c144800f4435323b1",
      :remote_sha => ""
    }
  ],
  deploy_targets: [
    {
      :stack => #<Stack: name="my-stack">,
      :apps => [
        #<App: name="my-app"
      ],
      :cookbook => {
        :bucket => "chef-app",
        :cookbook_filename => "chef-app-dev.zip",
        :sha_filename => "chef-app-dev_SHA.txt",
        :name => "chef-app",
        :path => "./chef",
        :local_sha => "7bfa19491170563f422a321c144800f4435323b1",
        :remote_sha => ""
      }
    }
  ]
}



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# File 'lib/dream-ops/deployment/opsworks.rb', line 47

def analyze(stack_ids)
  begin
    @opsworks = Aws::OpsWorks::Client.new
    stacks = @opsworks.describe_stacks({ stack_ids: stack_ids, }).stacks
  rescue => e
    DreamOps.ui.error "#{$!}"
    exit(1)
  end

  # Collect and print stack info
  result = { cookbooks: [], deploy_targets: [] }
  stacks.each do |stack|
    stack_result = analyze_stack(stack)
    # Add the stack to the deploy targets
    result[:deploy_targets] << {
      stack: stack,
      apps: stack_result[:apps],
      cookbook: stack_result[:cookbook]
    }
    # Determine whether the cookbook needs to be built
    cbook = stack_result[:cookbook]
    if !cbook.nil? && !cbook[:local_sha].nil?
      # We only build the cookbook if we don't have this version on S3
      if cbook[:remote_sha] != cbook[:local_sha]
        # Don't build the same destination cookbook more than once
        if !__cookbook_in_array(cbook, result[:cookbooks])
          result[:cookbooks] << cbook
        end
      end
    end
  end
  return result
end

#analyze_stack(stack) ⇒ Object

Retrieves stack apps and gets all information about remote/local cookbook



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# File 'lib/dream-ops/deployment/opsworks.rb', line 82

def analyze_stack(stack)
  cookbook = nil

  DreamOps.ui.info "Stack: #{stack.name}"
  if !stack.custom_cookbooks_source.nil?
    source = stack.custom_cookbooks_source

    # Skip this step if the stack doesn't use S3
    if source.type == 's3'
      cookbookPath = URI.parse(source.url).path[1..-1]
      firstSlash = cookbookPath.index('/')
      cookbook = {
          bucket: cookbookPath[0..(firstSlash-1)],
          cookbook_filename: cookbookPath[(firstSlash+1)..-1],
          sha_filename: cookbookPath[firstSlash+1..-1].sub('.zip', '_SHA.txt')
      }

      cookbooks = __get_cookbook_paths()

      # For now we only handle if we find one cookbook
      if cookbooks.length == 1
        path = cookbooks[0]
        loader = Chef::Cookbook::CookbookVersionLoader.new(path)
        loader.load_cookbooks
        cookbook_version = loader.cookbook_version
        metadata = cookbook_version.metadata

        cookbook[:name] = metadata.name
        cookbook[:path] = path
        if cookbook[:cookbook_filename].include? cookbook[:name]
          cookbook[:local_sha] = `git log --pretty=%H -1 #{cookbook[:path]}`.chomp

          begin
            obj = Aws::S3::Object.new(cookbook[:bucket], cookbook[:sha_filename])
            cookbook[:remote_sha] = obj.get.body.string
          rescue Aws::S3::Errors::NoSuchKey
            cookbook[:remote_sha] = ""
          end
        else
          DreamOps.ui.warn "Stack cookbook source is '#{cookbook[:cookbook_filename]}' but found '#{cookbook[:name]}' locally"
        end
      elsif cookbooks.length > 1
        DreamOps.ui.warn "Found more than one cookbook at paths #{cookbooks}.  Skipping build."
        cookbook[:name] = "???"
      else
        DreamOps.ui.warn "No cookbook found"
        cookbook[:name] = "???"
      end
      DreamOps.ui.info "--- Cookbook: #{cookbook[:name]}"
    end
  end

  apps = @opsworks.describe_apps({ stack_id: stack.stack_id }).apps
  if apps.length == 0
    DreamOps.ui.info "--- Apps: No apps"
  else
    DreamOps.ui.info "--- Apps: #{apps.map{|app| app.name}}"
  end

  return { apps: apps, cookbook: cookbook }
end

#deploy_app(app, stack) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 212

def deploy_app(app, stack)
  DreamOps.ui.info "...Deploying [stack=\"#{stack.name}\"] [app=\"#{app.name}\"]"
  begin
    response = @opsworks.create_deployment({
      stack_id: stack.stack_id,
      app_id: app.app_id,
      command: { name: "deploy" }
    })
  rescue Aws::OpsWorks::Errors::ValidationException
    __bail_with_fatal_error(NoRunningInstancesError.new(stack))
  end

  status = wait_for_deployment(response.deployment_id)
  if status != 'successful'
    __bail_with_fatal_error(OpsWorksCommandFailedError.new(
      stack, response.deployment_id, 'deploy')
    )
  end
end

#deploy_cookbook(cookbook) ⇒ Object

Deploys cookbook to S3



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# File 'lib/dream-ops/deployment/opsworks.rb', line 145

def deploy_cookbook(cookbook)
  begin
    archiveFile = File.open(cookbook[:cookbook_filename])
    remoteCookbook = Aws::S3::Object.new(cookbook[:bucket], cookbook[:cookbook_filename])
    response = remoteCookbook.put({ acl: "private", body: archiveFile })
    archiveFile.close

    remoteSha = Aws::S3::Object.new(cookbook[:bucket], cookbook[:sha_filename])
    response = remoteSha.put({ acl: "private", body: cookbook[:local_sha] })
  rescue => e
    DreamOps.ui.error "#{$!}"
  end
end

#deploy_target(target, cookbooks) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 160

def deploy_target(target, cookbooks)
  # If this stack has a new cookbook
  if !target[:cookbook].nil? || DreamOps.force_setup
    if __cookbook_in_array(target[:cookbook], cookbooks) || DreamOps.force_setup
      # Grab a fresh copy of the cookbook on all instances in the stack
      update_custom_cookbooks(target[:stack])

      # Re-run the setup step for all layers
      setup(target[:stack])
    end
  end

  # Deploy all apps for stack
  target[:apps].each do |app|
    deploy_app(app, target[:stack])
  end
end

#get_deployment_status(deployment_id) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 232

def get_deployment_status(deployment_id)
  response = @opsworks.describe_deployments({ deployment_ids: [deployment_id] })
  if response[:deployments].length == 1
    return response[:deployments][0].status
  end
  return "failed"
end

#setup(stack) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 197

def setup(stack)
  DreamOps.ui.info "...Running setup command [stack=\"#{stack.name}\"]"
  response = @opsworks.create_deployment({
    stack_id: stack.stack_id,
    command: { name: "setup" }
  })
  
  status = wait_for_deployment(response.deployment_id)
  if status != 'successful'
    __bail_with_fatal_error(OpsWorksCommandFailedError.new(
      stack, response.deployment_id, 'setup')
    )
  end
end

#update_custom_cookbooks(stack) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 178

def update_custom_cookbooks(stack)
  DreamOps.ui.info "...Updating custom cookbooks [stack=\"#{stack.name}\"]"
  begin
    response = @opsworks.create_deployment({
      stack_id: stack.stack_id,
      command: { name: "update_custom_cookbooks" }
    })
  rescue Aws::OpsWorks::Errors::ValidationException
    __bail_with_fatal_error(NoRunningInstancesError.new(stack))
  end

  status = wait_for_deployment(response.deployment_id)
  if status != 'successful'
    __bail_with_fatal_error(OpsWorksCommandFailedError.new(
      stack, response.deployment_id, 'update_custom_cookbooks')
    )
  end
end

#wait_for_deployment(deployment_id) ⇒ Object 



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# File 'lib/dream-ops/deployment/opsworks.rb', line 240

def wait_for_deployment(deployment_id)
  status = "failed"
  while true
    status = get_deployment_status(deployment_id)
    if ["successful", "failed"].include? status
      print "\b"
      break
    end
    sleep(2)
    print "\r#{@@spinner.next}"
  end
  return status
end