Class: Kitchen::Verifier::Base

Inherits:
Plugin::Base show all
Includes:
Configurable, Logging
Defined in:
lib/kitchen/verifier/base.rb

Overview

Base class for a verifier.

Author:

Direct Known Subclasses

Busser, Dummy, Shell

Instance Attribute Summary

Attributes included from Configurable

#instance

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Logging

#banner, #debug, #error, #fatal, #info, #warn

Methods included from Configurable

#[], #bourne_shell?, #calculate_path, #config_keys, #diagnose, #diagnose_plugin, #finalize_config!, included, #name, #powershell_shell?, #remote_path_join, #unix_os?, #verify_dependencies, #windows_os?

Methods inherited from Plugin::Base

no_parallel_for

Constructor Details

#initialize(config = {}) ⇒ Base

Creates a new Verifier object using the provided configuration data which will be merged with any default configuration.

Parameters:

  • config (Hash) (defaults to: {}) —

    provided verifier configuration



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# File 'lib/kitchen/verifier/base.rb', line 58

def initialize(config = {})
  init_config(config)
end

Class Method Details

.kitchen_verifier_api_version(version) ⇒ Object

Sets the API version for this verifier. If the verifier does not set this value, then ‘nil` will be used and reported.

Sets the API version for this verifier

Examples:

setting an API version


module Kitchen
  module Verifier
    class NewVerifier < Kitchen::Verifier::Base

      kitchen_verifier_api_version 2

    end
  end
end

Parameters:

  • version (Integer, String) —

    a version number



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# File 'lib/kitchen/verifier/base.rb', line 198

def self.kitchen_verifier_api_version(version)
  @api_version = version
end

Instance Method Details

#call(state) ⇒ Object

Runs the verifier on the instance.

Parameters:

  • state (Hash) —

    mutable instance state

Raises:



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# File 'lib/kitchen/verifier/base.rb', line 66

def call(state)
  create_sandbox
  sandbox_dirs = Util.list_directory(sandbox_path)

  instance.transport.connection(state) do |conn|
    conn.execute(install_command)
    conn.execute(init_command)
    info("Transferring files to #{instance.to_str}")
    conn.upload(sandbox_dirs, config[:root_path])
    debug("Transfer complete")
    conn.execute(prepare_command)
    conn.execute(run_command)

    info("Downloading files from #{instance.to_str}")
    config[:downloads].to_h.each do |remotes, local|
      debug("Downloading #{Array(remotes).join(", ")} to #{local}")
      conn.download(remotes, local)
    end
    debug("Download complete")
  end
rescue Kitchen::Transport::TransportFailed => ex
  raise ActionFailed, ex.message
ensure
  cleanup_sandbox
end

#cleanup_sandbox ⇒ Object

Deletes the sandbox path. Without calling this method, the sandbox path will persist after the process terminates. In other words, cleanup is explicit. This method is safe to call multiple times.



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# File 'lib/kitchen/verifier/base.rb', line 103

def cleanup_sandbox
  return if sandbox_path.nil?

  debug("Cleaning up local sandbox in #{sandbox_path}")
  FileUtils.rmtree(sandbox_path)
end

#create_sandbox ⇒ Object

Creates a temporary directory on the local workstation into which verifier related files and directories can be copied or created. The contents of this directory will be copied over to the instance before invoking the verifier’s run command. After this method completes, it is expected that the contents of the sandbox is complete and ready for copy to the remote instance.

Note: any subclasses would be well advised to call super first when overriding this method, for example:

Examples:

overriding ‘#create_sandbox`


class MyVerifier < Kitchen::Verifier::Base
  def create_sandbox
    super
    # any further file copies, preparations, etc.
  end
end


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# File 'lib/kitchen/verifier/base.rb', line 128

def create_sandbox
  @sandbox_path = Dir.mktmpdir("#{instance.name}-sandbox-")
  File.chmod(0755, sandbox_path)
  info("Preparing files for transfer")
  debug("Creating local sandbox in #{sandbox_path}")
end

#doctor(state) ⇒ Object

Check system and configuration for common errors.

Parameters:

  • state (Hash) —

    mutable instance state



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# File 'lib/kitchen/verifier/base.rb', line 96

def doctor(state)
  false
end

#init_command ⇒ String

Generates a command string which will perform any data initialization or configuration required after the verifier software is installed but before the sandbox has been transferred to the instance. If no work is required, then ‘nil` will be returned.

Returns:

  • (String) —

    a command string



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# File 'lib/kitchen/verifier/base.rb', line 148

def init_command; end

#install_command ⇒ String

Generates a command string which will install and configure the verifier software on an instance. If no work is required, then ‘nil` will be returned.

Returns:

  • (String) —

    a command string



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# File 'lib/kitchen/verifier/base.rb', line 140

def install_command; end

#prepare_command ⇒ String

Generates a command string which will perform any commands or configuration required just before the main verifier run command but after the sandbox has been transferred to the instance. If no work is required, then ‘nil` will be returned.

Returns:

  • (String) —

    a command string



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# File 'lib/kitchen/verifier/base.rb', line 156

def prepare_command; end

#run_command ⇒ String

Generates a command string which will invoke the main verifier command on the prepared instance. If no work is required, then ‘nil` will be returned.

Returns:

  • (String) —

    a command string



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# File 'lib/kitchen/verifier/base.rb', line 163

def run_command; end

#sandbox_path ⇒ String

Returns the absolute path to the sandbox directory or raises an exception if ‘#create_sandbox` has not yet been called.

Returns:

  • (String) —

    the absolute path to the sandbox directory

Raises:

  • (ClientError) —

    if the sandbox directory has no yet been created by calling ‘#create_sandbox`



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# File 'lib/kitchen/verifier/base.rb', line 171

def sandbox_path
  @sandbox_path ||= begin
     raise ClientError, "Sandbox directory has not yet " \
     "been created. Please run #{self.class}#create_sandox before " \
     "trying to access the path."
   end
end