Protocol Buffers Parser

Types
Limitations
Example

Protocol Buffers is currently experimental and may change in future versions.

The Protocol Buffers parser is used for parsing incoming Protocol Buffers data. To use it set decoder to protobuf and set the fields’ source to the field number as defined in the protocol buffers definition.

Types

You will need to specify the corresponding type and format. See Parsing Data for more information about formats.

Proto Type	Schema Type	Schema Format
double	number	float64
float	number	float32
int32	integer	uint32
int64	integer	uint64
uint32	integer	uint32
uint64	integer	uint64
sint32	integer	int32
sint64	integer	int64
fixed32	integer	uint32
fixed64	integer	uint64
sfixed32	integer	int32
sfixed64	integer	int64
bool	boolean
string	string
bytes	string	bytes
message	object
enum	integer	uint32 / uint64

Limitations

Proto enum values are read as unsigned integers. There is currently no mechanism for mapping these to the enum values’ string representation.

Example

Protocol Buffers definition:

syntax = "proto3";

message Record {
  string name = 1;
  int32 age = 2;
}

Decoder configuration:

decoder: protobuf
schema:
  type: object
  properties:
    name:
      type: string
      source: 1
    age:
      type: integer
      format: uint32
      source: 2