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require 'chef_zero/rest_request'
require 'chef_zero/rest_error_response'
require 'chef_zero/data_store/data_not_found_error'
require 'chef_zero/chef_data/acl_path'
module ChefZero
class RestBase
def initialize(server)
@server = server
end
attr_reader :server
def data_store
server.data_store
end
def call(request)
method = request.method.downcase.to_sym
if !self.respond_to?(method)
accept_methods = [:get, :put, :post, :delete].select { |m| self.respond_to?(m) }
accept_methods_str = accept_methods.map { |m| m.to_s.upcase }.join(', ')
return [405, {"Content-Type" => "text/plain", "Allow" => accept_methods_str}, "Bad request method for '#{request.env['REQUEST_PATH']}': #{request.env['REQUEST_METHOD']}"]
end
if json_only && !accepts?(request, 'application', 'json')
return [406, {"Content-Type" => "text/plain"}, "Must accept application/json"]
end
# Dispatch to get()/post()/put()/delete()
begin
self.send(method, request)
rescue RestErrorResponse => e
ChefZero::Log.debug("#{e.inspect}\n#{e.backtrace.join("\n")}")
error(e.response_code, e.error)
end
end
def json_only
true
end
def accepts?(request, category, type)
# If HTTP_ACCEPT is not sent at all, assume it accepts anything
# This parses as per http://tools.ietf.org/html/rfc7231#section-5.3
return true if !request.env['HTTP_ACCEPT']
accepts = request.env['HTTP_ACCEPT'].split(/,\s*/).map { |x| x.split(';',2)[0].strip }
return accepts.include?("#{category}/#{type}") || accepts.include?("#{category}/*") || accepts.include?('*/*')
end
def get_data(request, rest_path=nil, *options)
rest_path ||= request.rest_path
begin
data_store.get(rest_path, request)
rescue DataStore::DataNotFoundError
if options.include?(:nil)
nil
elsif options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Object not found: #{build_uri(request.base_uri, rest_path)}")
end
end
end
def list_data(request, rest_path=nil, *options)
rest_path ||= request.rest_path
begin
data_store.list(rest_path)
rescue DataStore::DataNotFoundError
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Object not found: #{build_uri(request.base_uri, rest_path)}")
end
end
end
def delete_data(request, rest_path=nil, *options)
rest_path ||= request.rest_path
begin
data_store.delete(rest_path, *options)
rescue DataStore::DataNotFoundError
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Object not found: #{build_uri(request.base_uri, request.rest_path)}")
end
end
begin
acl_path = ChefData::AclPath.get_acl_data_path(rest_path)
data_store.delete(acl_path) if acl_path
rescue DataStore::DataNotFoundError
end
end
def delete_data_dir(request, rest_path, *options)
rest_path ||= request.rest_path
begin
data_store.delete_dir(rest_path, *options)
rescue DataStore::DataNotFoundError
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Object not found: #{build_uri(request.base_uri, request.rest_path)}")
end
end
begin
acl_path = ChefData::AclPath.get_acl_data_path(rest_path)
data_store.delete(acl_path) if acl_path
rescue DataStore::DataNotFoundError
end
end
def set_data(request, rest_path, data, *options)
rest_path ||= request.rest_path
begin
data_store.set(rest_path, data, *options)
rescue DataStore::DataNotFoundError
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Object not found: #{build_uri(request.base_uri, request.rest_path)}")
end
end
end
def create_data_dir(request, rest_path, name, *options)
rest_path ||= request.rest_path
begin
data_store.create_dir(rest_path, name, *options, :requestor => request.requestor)
rescue DataStore::DataNotFoundError
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Parent not found: #{build_uri(request.base_uri, request.rest_path)}")
end
rescue DataStore::DataAlreadyExistsError
puts $!.backtrace.join("\n")
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(409, "Object already exists: #{build_uri(request.base_uri, request.rest_path + [name])}")
end
end
end
def create_data(request, rest_path, name, data, *options)
rest_path ||= request.rest_path
begin
data_store.create(rest_path, name, data, *options, :requestor => request.requestor)
rescue DataStore::DataNotFoundError
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(404, "Parent not found: #{build_uri(request.base_uri, request.rest_path)}")
end
rescue DataStore::DataAlreadyExistsError
puts $!.backtrace.join("\n")
if options.include?(:data_store_exceptions)
raise
else
raise RestErrorResponse.new(409, "Object already exists: #{build_uri(request.base_uri, request.rest_path + [name])}")
end
end
end
def exists_data?(request, rest_path=nil)
rest_path ||= request.rest_path
data_store.exists?(rest_path)
end
def exists_data_dir?(request, rest_path=nil)
rest_path ||= request.rest_path
data_store.exists_dir?(rest_path)
end
def error(response_code, error)
json_response(response_code, {"error" => [error]})
end
def json_response(response_code, json)
already_json_response(response_code, JSON.pretty_generate(json))
end
def already_json_response(response_code, json_text)
[response_code, {"Content-Type" => "application/json"}, json_text]
end
# To be called from inside rest endpoints
def build_uri(base_uri, rest_path)
if server.options[:single_org]
# Strip off /organizations/chef if we are in single org mode
if rest_path[0..1] != [ 'organizations', server.options[:single_org] ]
raise "Unexpected URL #{rest_path[0..1]} passed to build_uri in single org mode"
end
"#{base_uri}/#{rest_path[2..-1].join('/')}"
else
"#{base_uri}/#{rest_path.join('/')}"
end
end
def self.build_uri(base_uri, rest_path)
"#{base_uri}/#{rest_path.join('/')}"
end
def populate_defaults(request, response)
response
end
end
end
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