bench/index.js

"use strict";

// NOTE: This benchmark partly compares apples and oranges in that it measures protocol buffers,
// which is purely a binary format, and JSON, which is purely a string format.
//
// This matters because strings aren't actually transfered over the network but must still be
// converted to binary somewhere down the road. Because this can't be measured reliably, this
// benchmark compares both pure string performance of JSON and additional binary conversion of the
// same data using node buffers. Actual JSON performance on the network level should be somewhere
// in between.

var newSuite  = require("./suite"),
    payload   = require("./data/bench.json");

var Buffer_from = Buffer.from !== Uint8Array.from && Buffer.from || function(value, encoding) { return new Buffer(value, encoding); };

// protobuf.js dynamic: load the proto and set up a buffer
var pbjsCls = require("..").loadSync(require.resolve("./data/bench.proto")).resolveAll().lookup("Test");
var pbjsMsg = payload; // alt: pbjsCls.fromObject(payload);
var pbjsBuf = pbjsCls.encode(pbjsMsg).finish();

// protobuf.js static: load the proto
var pbjsStaticCls = require("./data/static_pbjs.js").Test;

// JSON: set up a string and a buffer
var jsonMsg = payload;
var jsonStr = JSON.stringify(jsonMsg);
var jsonBuf = Buffer_from(jsonStr, "utf8");

// google-protobuf: load the proto, set up an Uint8Array and a message
var jspbCls = require("./data/static_jspb.js").Test;
var jspbBuf = new Uint8Array(Array.prototype.slice.call(pbjsBuf));
var jspbMsg = jspbCls.deserializeBinary(jspbBuf);

newSuite("encoding")

.add("protobuf.js (reflect)", function() {
    pbjsCls.encode(pbjsMsg).finish();
})
.add("protobuf.js (static)", function() {
    pbjsStaticCls.encode(pbjsMsg).finish();
})
.add("JSON (string)", function() {
    JSON.stringify(jsonMsg);
})
.add("JSON (buffer)", function() {
    Buffer_from(JSON.stringify(jsonMsg), "utf8");
})
.add("google-protobuf", function() {
    jspbMsg.serializeBinary();
})
.run();

newSuite("decoding")

.add("protobuf.js (reflect)", function() {
    pbjsCls.decode(pbjsBuf); // no allocation overhead, if you wondered
})
.add("protobuf.js (static)", function() {
    pbjsStaticCls.decode(pbjsBuf);
})
.add("JSON (string)", function() {
    JSON.parse(jsonStr);
})
.add("JSON (buffer)", function() {
    JSON.parse(jsonBuf.toString("utf8"));
})
.add("google-protobuf", function() {
    jspbCls.deserializeBinary(jspbBuf);
})
.run();

newSuite("combined")

.add("protobuf.js (reflect)", function() {
    pbjsCls.decode(pbjsCls.encode(pbjsMsg).finish());
})
.add("protobuf.js (static)", function() {
    pbjsStaticCls.decode(pbjsStaticCls.encode(pbjsMsg).finish());
})
.add("JSON (string)", function() {
    JSON.parse(JSON.stringify(jsonMsg));
})
.add("JSON (buffer)", function() {
    JSON.parse(Buffer_from(JSON.stringify(jsonMsg), "utf8").toString("utf8"));
})
.add("google-protobuf", function() {
    jspbCls.deserializeBinary(jspbMsg.serializeBinary());
})
.run();