Class: BoltServer::TransportApp

Inherits:
Sinatra::Base
  • Object
show all
Defined in:
lib/bolt_server/transport_app.rb

Constant Summary collapse

PARTIAL_SCHEMAS =

These partial schemas are reused to build multiple request schemas

%w[target-any target-ssh target-winrm task].freeze
REQUEST_SCHEMAS =

These schemas combine shared schemas to describe client requests

%w[
  action-check_node_connections
  action-run_command
  action-run_task
  action-run_script
  action-upload_file
  transport-ssh
  transport-winrm
].freeze
ACTIONS = 
%w[
  check_node_connections
  run_command
  run_task
  run_script
  upload_file
].freeze

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ TransportApp

Returns a new instance of TransportApp.



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# File 'lib/bolt_server/transport_app.rb', line 32

def initialize(config)
  @config = config
  @schemas = Hash[REQUEST_SCHEMAS.map do |basename|
    [basename, JSON.parse(File.read(File.join(__dir__, ['schemas', "#{basename}.json"])))]
  end]

  PARTIAL_SCHEMAS.each do |basename|
    schema_content = JSON.parse(File.read(File.join(__dir__, ['schemas', 'partials', "#{basename}.json"])))
    shared_schema = JSON::Schema.new(schema_content, Addressable::URI.parse("partial:#{basename}"))
    JSON::Validator.add_schema(shared_schema)
  end

  @executor = Bolt::Executor.new(0)

  @file_cache = BoltServer::FileCache.new(@config).setup

  super(nil)
end

Instance Method Details

#check_node_connections(targets, body) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 110

def check_node_connections(targets, body)
  error = validate_schema(@schemas["action-check_node_connections"], body)
  return [], error unless error.nil?

  # Puppet Enterprise's orchestrator service uses the
  # check_node_connections endpoint to check whether nodes that should be
  # contacted over SSH or WinRM are responsive. The wait time here is 0
  # because the endpoint is meant to be used for a single check of all
  # nodes; External implementations of wait_until_available (like
  # orchestrator's) should contact the endpoint in their own loop.
  [@executor.wait_until_available(targets, wait_time: 0), nil]
end

#make_ssh_target(target_hash) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 203

def make_ssh_target(target_hash)
  defaults = {
    'host-key-check' => false
  }

  overrides = {
    'load-config' => false
  }

  opts = defaults.merge(target_hash.clone).merge(overrides)

  if opts['private-key-content']
    private_key_content = opts.delete('private-key-content')
    opts['private-key'] = { 'key-data' => private_key_content }
  end

  Bolt::Target.new(target_hash['hostname'], opts)
end

#make_winrm_target(target_hash) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 242

def make_winrm_target(target_hash)
  overrides = {
    'protocol' => 'winrm'
  }

  opts = target_hash.clone.merge(overrides)
  Bolt::Target.new(target_hash['hostname'], opts)
end

#result_set_to_status_hash(result_set, aggregate: false) ⇒ Object

Turns a Bolt::ResultSet object into a status hash that is fit to return to the client in a response.

If the ‘result_set` has more than one result, the status hash will have a `status` value and a list of target `results`. If the `result_set` contains only one item, it will be returned as a single result object. Set `aggregate` to treat it as a set of results with length 1 instead.



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# File 'lib/bolt_server/transport_app.rb', line 75

def result_set_to_status_hash(result_set, aggregate: false)
  scrubbed_results = result_set.map do |result|
    scrub_stack_trace(result.status_hash)
  end

  if aggregate || scrubbed_results.length > 1
    # For actions that act on multiple targets, construct a status hash for the aggregate result
    all_succeeded = scrubbed_results.all? { |r| r[:status] == 'success' }
    {
      status: all_succeeded ? 'success' : 'failure',
      result: scrubbed_results
    }
  else
    # If there was only one target, return the first result on its own
    scrubbed_results.first
  end
end

#run_command(target, body) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 102

def run_command(target, body)
  error = validate_schema(@schemas["action-run_command"], body)
  return [], error unless error.nil?

  command = body['command']
  [@executor.run_command(target, command), nil]
end

#run_script(target, body) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 166

def run_script(target, body)
  error = validate_schema(@schemas["action-run_script"], body)
  return [], error unless error.nil?

  # Download the file onto the machine.
  file_location = @file_cache.update_file(body['script'])

  [@executor.run_script(target, file_location, body['arguments'])]
end

#run_task(target, body) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 93

def run_task(target, body)
  error = validate_schema(@schemas["action-run_task"], body)
  return [], error unless error.nil?

  task = Bolt::Task::PuppetServer.new(body['task'], @file_cache)
  parameters = body['parameters'] || {}
  [@executor.run_task(target, task, parameters), nil]
end

#scrub_stack_trace(result) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 51

def scrub_stack_trace(result)
  if result.dig(:result, '_error', 'details', 'stack_trace')
    result[:result]['_error']['details'].reject! { |k| k == 'stack_trace' }
  end
  result
end

#upload_file(target, body) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 123

def upload_file(target, body)
  error = validate_schema(@schemas["action-upload_file"], body)
  return [], error unless error.nil?

  files = body['files']
  destination = body['destination']
  job_id = body['job_id']
  cache_dir = @file_cache.create_cache_dir(job_id.to_s)
  FileUtils.mkdir_p(cache_dir)
  files.each do |file|
    relative_path = file['relative_path']
    uri = file['uri']
    sha256 = file['sha256']
    kind = file['kind']
    path = File.join(cache_dir, relative_path)
    if kind == 'file'
      # The parent should already be created by `directory` entries,
      # but this is to be on the safe side.
      parent = File.dirname(path)
      FileUtils.mkdir_p(parent)
      @file_cache.serial_execute { @file_cache.download_file(path, sha256, uri) }
    elsif kind == 'directory'
      # Create directory in cache so we can move files in.
      FileUtils.mkdir_p(path)
    else
      return [400, Bolt::Error.new("Invalid `kind` of '#{kind}' supplied. Must be `file` or `directory`.",
                                   'boltserver/schema-error').to_json]
    end
  end
  # We need to special case the scenario where only one file was
  # included in the request to download. Otherwise, the call to upload_file
  # will attempt to upload with a directory as a source and potentially a
  # filename as a destination on the host. In that case the end result will
  # be the file downloaded to a directory with the same name as the source
  # filename, rather than directly to the filename set in the destination.
  upload_source = if files.size == 1 && files[0]['kind'] == 'file'
                    File.join(cache_dir, files[0]['relative_path'])
                  else
                    cache_dir
                  end
  [@executor.upload_file(target, upload_source, destination), nil]
end

#validate_schema(schema, body) ⇒ Object 



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# File 'lib/bolt_server/transport_app.rb', line 58

def validate_schema(schema, body)
  schema_error = JSON::Validator.fully_validate(schema, body)
  if schema_error.any?
    Bolt::Error.new("There was an error validating the request body.",
                    'boltserver/schema-error',
                    schema_error)
  end
end