Fl4m3Ph03n1x
.proto file for exprotobuf
Background
I am trying to use protobuff for one of our apps by using exprotobuf, but I am having trouble understanding the protocol and I need help creating a .proto file.
Data
The data I need to encode is a list of maps, with the following structure:
[
{
"AwayTeam": "Osasuna",
"Date": "2017-05-07",
"Div": "SP1",
"FTAG": 1,
"FTHG": 4,
"FTR": "H",
"HTAG": 0,
"HTHG": 2,
"HTR": "H",
"HomeTeam": "Valencia",
"Season": 201617
},
{
"AwayTeam": "Osasuna",
"Date": "2016-02-27",
"Div": "SP2",
"FTAG": 1,
"FTHG": 0,
"FTR": "A",
"HTAG": 0,
"HTHG": 0,
"HTR": "D",
"HomeTeam": "Cordoba",
"Season": 201516
}
]
Each map has the following structure:
{
"AwayTeam": string, required: true
"Date": string, required: true
"Div": string, required: true
"FTAG": integer, required: true
"FTHG": integer, required: true
"FTR": string, required: true
"HTAG": integer, required: true
"HTHG": integer, required: true
"HTR": string, required: true
"HomeTeam": string, required: true
"Season": integer, required: true
}
Research
My goal is to create .proto file using proto3. So I decided to read the documentation for .proto3 files:
https://developers.google.com/protocol-buffers/docs/proto3#maps
But I was even more confused. According to the docs, I cannot have a map holding values of different types:
For that I would need the equivalent of the JSON object type and check the docs for .struct.proto but that page doesn’t mention anything about it.
Question
So I am rather lost here. How do I represent the mentioned data structure in a .proto?
Marked As Solved
massimo
relying on my memory here
it should be something like this
message Result {
string AwayTeam = 1
string Date = 2
string Div = 3
int32 FTAG = 4
int32 FTHG = 5
string FTR = 6
int32 HTAG = 7
int32 HTHG = 8
string HTR = 9
string HomeTeam = 10
int32 Season = 11
}
# Your final response type
message Response {
repeated Result results = 1
}
# empty request
message Request {}
# example service definition
service ServiceName {
rpc method_name (Request) returns (Reponse) {}
}
Also Liked
Fl4m3Ph03n1x
Your code is 99% accurate! You were only missing the semi-colons at the end:
"""
syntax = "proto3";
message Result {
string AwayTeam = 1;
string Date = 2;
string Div = 3;
int32 FTAG = 4;
int32 FTHG = 5;
string FTR = 6;
int32 HTAG = 7;
int32 HTHG = 8;
string HTR = 9;
string HomeTeam = 10;
int32 Season = 11;
}
message Response {
repeated Result results = 1;
}
message Request {}
"""
Now, while I don’t know if this will work as expected, I am happy that at least now it compiles !
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