class GRPC::BadStatus

BadStatus is an exception class that indicates that an error occurred at either end of a GRPC connection. When raised, it indicates that a status error should be returned to the other end of a GRPC connection; when caught it means that this end received a status error.

There is also subclass of BadStatus in this module for each GRPC status. E.g., the GRPC::Cancelled class corresponds to status CANCELLED.

See github.com/grpc/grpc/blob/master/include/grpc/impl/codegen/status.h for detailed descriptions of each status code.

Attributes

code[R]
details[R]
metadata[R]

Public Class Methods

new(code, details = 'unknown cause', metadata = {}) click to toggle source

@param code [Numeric] the status code @param details [String] the details of the exception @param metadata [Hash] the error's metadata

Calls superclass method
# File src/ruby/lib/grpc/errors.rb, line 40
def initialize(code, details = 'unknown cause', metadata = {})
  super("#{code}:#{details}")
  @code = code
  @details = details
  @metadata = metadata
end
new_status_exception(code, details = 'unknown cause', metadata = {}) click to toggle source
# File src/ruby/lib/grpc/errors.rb, line 69
def self.new_status_exception(code, details = 'unknown cause',
                              metadata = {})
  codes = {}
  codes[OK] = Ok
  codes[CANCELLED] = Cancelled
  codes[UNKNOWN] = Unknown
  codes[INVALID_ARGUMENT] = InvalidArgument
  codes[DEADLINE_EXCEEDED] = DeadlineExceeded
  codes[NOT_FOUND] = NotFound
  codes[ALREADY_EXISTS] = AlreadyExists
  codes[PERMISSION_DENIED] = PermissionDenied
  codes[UNAUTHENTICATED] = Unauthenticated
  codes[RESOURCE_EXHAUSTED] = ResourceExhausted
  codes[FAILED_PRECONDITION] = FailedPrecondition
  codes[ABORTED] = Aborted
  codes[OUT_OF_RANGE] = OutOfRange
  codes[UNIMPLEMENTED] = Unimplemented
  codes[INTERNAL] = Internal
  codes[UNAVAILABLE] = Unavailable
  codes[DATA_LOSS] = DataLoss

  if codes[code].nil?
    BadStatus.new(code, details, metadata)
  else
    codes[code].new(details, metadata)
  end
end

Public Instance Methods

to_rpc_status() click to toggle source

Converts the exception to a deserialized {Google::Rpc::Status} object. Returns `nil` if the `grpc-status-details-bin` trailer could not be converted to a {Google::Rpc::Status} due to the server not providing the necessary trailers.

@return [Google::Rpc::Status, nil]

# File src/ruby/lib/grpc/errors.rb, line 61
def to_rpc_status
  GoogleRpcStatusUtils.extract_google_rpc_status(to_status)
rescue Google::Protobuf::ParseError => parse_error
  GRPC.logger.warn('parse error: to_rpc_status failed')
  GRPC.logger.warn(parse_error)
  nil
end
to_status() click to toggle source

Converts the exception to a {Struct::Status} for use in the networking wrapper layer.

@return [Struct::Status] with the same code and details

# File src/ruby/lib/grpc/errors.rb, line 51
def to_status
  Struct::Status.new(code, details, metadata)
end