Class: Bosh::Director::Jobs::DeleteRelease

Inherits:
BaseJob show all
Includes:
LockHelper
Defined in:
lib/bosh/director/jobs/delete_release.rb

Instance Attribute Summary

Attributes inherited from BaseJob

#task_id

Class Method Summary collapse

Instance Method Summary collapse

Methods included from LockHelper

#with_compile_lock, #with_deployment_lock, #with_release_lock, #with_release_locks, #with_stemcell_lock

Methods inherited from BaseJob

#begin_stage, #event_log, #logger, perform, #result_file, #single_step_stage, #task_cancelled?, #task_checkpoint, #track_and_log

Constructor Details

#initialize(name, options = {}) ⇒ DeleteRelease

Returns a new instance of DeleteRelease.



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# File 'lib/bosh/director/jobs/delete_release.rb', line 14

def initialize(name, options = {})
  @name = name
  @blobstore = options.fetch(:blobstore) { App.instance.blobstores.blobstore }
  @errors = []
  @force = !!options["force"]
  @version = options["version"]
  @release_manager = Api::ReleaseManager.new
end

Class Method Details

.job_type ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 10

def self.job_type
  :delete_release
end

Instance Method Details

#delete_blobstore_id(blobstore_id, nil_id_allowed = false) ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 205

def delete_blobstore_id(blobstore_id, nil_id_allowed = false)
  if blobstore_id.nil? && nil_id_allowed
    return true
  end

  deleted = false
  begin
    @blobstore.delete(blobstore_id)
    deleted = true
  rescue Exception => e
    logger.warn("Could not delete from blobstore: #{e}\n " + e.backtrace.join("\n"))
    @errors << e
  end

  return deleted || @force
end

#delete_package(package) ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 124

def delete_package(package)
  compiled_packages = package.compiled_packages

  logger.info("Deleting package #{package.name}/#{package.version}")

  compiled_packages.each do |compiled_package|
    stemcell = compiled_package.stemcell
    logger.info("Deleting compiled package " +
                "(#{compiled_package.blobstore_id}) " +
                "#{package.name}/#{package.version} " +
                "for #{stemcell.name}/#{stemcell.version}")

    if delete_blobstore_id(compiled_package.blobstore_id)
      compiled_package.destroy
    end
  end

  if delete_blobstore_id(package.blobstore_id, true)
    package.remove_all_release_versions
    package.destroy
  end
end

#delete_release(release) ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 95

def delete_release(release)
  event_log.begin_stage("Deleting packages", release.packages.count)
  release.packages.each do |package|
    track_and_log("#{package.name}/#{package.version}") do
      delete_package(package)
    end
  end

  event_log.begin_stage("Deleting jobs", release.templates.count)
  release.templates.each do |template|
    track_and_log("#{template.name}/#{template.version}") do
      delete_template(template)
    end
  end

  if @errors.empty? || @force
    event_log.begin_stage("Deleting release versions",
                          release.versions.count)

    release.versions.each do |release_version|
      track_and_log("#{release.name}/#{release_version.version}") do
        release_version.destroy
      end
    end

    release.destroy
  end
end

#delete_release_version(release_version) ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 23

def delete_release_version(release_version)
  release = release_version.release

  packages_to_keep = []
  packages_to_delete = []
  templates_to_keep = []
  templates_to_delete = []

  # We don't delete packages inside this loop b/c Sequel will also delete
  # them from packages collection we're iterating on which will lead to
  # skipping some packages
  release_version.packages.each do |package|
    if package.release_versions == [ release_version ]
      packages_to_delete << package
    else
      packages_to_keep << package
    end
  end

  release_version.templates.each do |template|
    if template.release_versions == [ release_version ]
      templates_to_delete << template
    else
      templates_to_keep << template
    end
  end

  event_log.begin_stage("Deleting packages", packages_to_delete.count)
  packages_to_delete.each do |package|
    track_and_log("#{package.name}/#{package.version}") do
      logger.info("Package #{package.name}/#{package.version} " +
                  "is only used by this release version " +
                  "and will be deleted")
      delete_package(package)
    end
  end

  packages_to_keep.each do |package|
    logger.info("Keeping package #{package.name}/#{package.version} " +
                "as it is used by other release versions")
    package.remove_release_version(release_version)
  end

  event_log.begin_stage("Deleting jobs", templates_to_delete.count)
  templates_to_delete.each do |template|
    track_and_log("#{template.name}/#{template.version}") do
      logger.info("Template #{template.name}/#{template.version} " +
                  "is only used by this release version " +
                  "and will be deleted")
      delete_template(template)
    end
  end

  templates_to_keep.each do |template|
    logger.info("Keeping job " +
                "#{template.name}/#{template.version} as it is used " +
                "by other release versions")
    template.remove_release_version(release_version)
  end

  logger.info("Remove all deployments in release version")
  release_version.remove_all_deployments

  if @errors.empty? || @force
    release_version.destroy
  end

  if release.versions.empty?
    delete_release(release)
  end
end

#delete_template(template) ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 147

def delete_template(template)
  logger.info("Deleting job: #{template.name}/#{template.version}")

  if delete_blobstore_id(template.blobstore_id)
    template.remove_all_release_versions
    template.destroy
  end
end

#perform ⇒ Object 



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# File 'lib/bosh/director/jobs/delete_release.rb', line 156

def perform
  logger.info("Processing delete release")

  with_release_lock(@name, :timeout => 10) do
    logger.info("Looking up release: #{@name}")
    release = @release_manager.find_by_name(@name)
    logger.info("Found release: #{release.name}")

    if @version
      logger.info("Looking up release version `#{release.name}/#{@version}'")
      release_version = @release_manager.find_version(release, @version)
      # found version may be different than the requested version, due to version formatting
      logger.info("Found release version: `#{release.name}/#{release_version.version}'")
      logger.info("Checking for any deployments still using " +
                   "this particular release version")

      deployments = release_version.deployments

      unless deployments.empty?
        names = deployments.map{ |d| d.name }.join(", ")
        raise ReleaseVersionInUse,
              "ReleaseVersion `#{release.name}/#{release_version.version}' is still in use by: #{names}"
      end

      delete_release_version(release_version)
    else
      logger.info("Checking for any deployments still using the release")
      deployments = release.versions.map { |version|
        version.deployments
      }.flatten.uniq

      unless deployments.empty?
        names = deployments.map { |d| d.name }.join(", ")
        raise ReleaseInUse,
              "Release `#{release.name}' is still in use by: #{names}"
      end

      delete_release(release)
    end
  end

  unless @errors.empty?
    errors = @errors.map { |e| e.to_s }.join(", ")
    raise ReleaseDeleteFailed, "Can't delete release: #{errors}"
  end

  "/release/#{@name}"
end