Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/
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syntax = "proto3";
package a.b.c;
message TestMessage {
int32 optional_int32 = 1;
int64 optional_int64 = 2;
uint32 optional_uint32 = 3;
uint64 optional_uint64 = 4;
bool optional_bool = 5;
double optional_double = 6;
float optional_float = 7;
string optional_string = 8;
bytes optional_bytes = 9;
TestEnum optional_enum = 10;
TestMessage optional_msg = 11;
repeated int32 repeated_int32 = 21;
repeated int64 repeated_int64 = 22;
repeated uint32 repeated_uint32 = 23;
repeated uint64 repeated_uint64 = 24;
repeated bool repeated_bool = 25;
repeated double repeated_double = 26;
repeated float repeated_float = 27;
repeated string repeated_string = 28;
repeated bytes repeated_bytes = 29;
repeated TestEnum repeated_enum = 30;
repeated TestMessage repeated_msg = 31;
oneof my_oneof {
int32 oneof_int32 = 41;
int64 oneof_int64 = 42;
uint32 oneof_uint32 = 43;
uint64 oneof_uint64 = 44;
bool oneof_bool = 45;
double oneof_double = 46;
float oneof_float = 47;
string oneof_string = 48;
bytes oneof_bytes = 49;
TestEnum oneof_enum = 50;
TestMessage oneof_msg = 51;
}
map<int32, string> map_int32_string = 61;
map<int64, string> map_int64_string = 62;
map<uint32, string> map_uint32_string = 63;
map<uint64, string> map_uint64_string = 64;
map<bool, string> map_bool_string = 65;
map<string, string> map_string_string = 66;
map<string, TestMessage> map_string_msg = 67;
map<string, TestEnum> map_string_enum = 68;
map<string, int32> map_string_int32 = 69;
map<string, bool> map_string_bool = 70;
message NestedMessage {
int32 foo = 1;
}
NestedMessage nested_message = 80;
// Reserved for non-existing field test.
// int32 non_exist = 89;
}
enum TestEnum {
Default = 0;
A = 1;
B = 2;
C = 3;
}
message TestUnknown {
TestUnknown optional_unknown = 11;
repeated TestUnknown repeated_unknown = 31;
oneof my_oneof {
TestUnknown oneof_unknown = 51;
}
map<string, TestUnknown> map_unknown = 67;
int32 unknown_field = 89;
}