Protobuf Reference

Proto3 Syntax

`syntax = "proto3";`	File header
`message MyMsg { string name = 1; }`	Message definition
`repeated string items = 1;`	Repeated field (list)
`optional int32 count = 2;`	Optional field
`oneof payload { string s = 1; int32 n = 2; }`	Oneof
`enum Status { UNKNOWN=0; OK=1; ERROR=2; }`	Enum
`map scores = 1;`	Map field

Well-Known Types

`google.protobuf.Timestamp`	Nanosecond timestamp
`google.protobuf.Duration`	Duration
`google.protobuf.Any`	Any message type
`google.protobuf.Struct`	JSON-like structure