/*
* Copyright 2023, TeamDev. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Redistribution and use in source and/or binary forms, with or without
* modification, must retain the above copyright notice and the following
* disclaimer.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
"use strict";
import {Message} from 'google-protobuf';
import {Observable} from 'rxjs';
import {map} from 'rxjs/operators';
import TypeParsers from './parser/type-parsers';
import KnownTypes from './known-types';
/**
* A utility which converts the JS object to its Protobuf counterpart.
*/
export default class ObjectToProto {
constructor() {
throw new Error('ObjectToProto is not supposed to be instantiated.');
}
/**
* Converts the object to the corresponding Protobuf message.
*
* The input object is supposed to be a Protobuf message representation, i.e. all of its attributes should
* correspond to the fields of the specified message type.
*
* @param {!Object} object an object to convert
* @param {!string} typeUrl a type URL of the corresponding Protobuf message
*/
static convert(object, typeUrl) {
if (!KnownTypes.hasType(typeUrl)) {
throw new Error(`Unable to convert object of unknown type ${typeUrl}`);
}
const parser = TypeParsers.parserFor(typeUrl);
const proto = parser.fromObject(object);
return proto;
}
/**
* Convert the given observable of objects to the observable of the
* corresponding Protobuf messages.
*
* @param {!Observable<Object>} observable an observable to convert
* @param {!string} typeUrl a type URL of the corresponding Protobuf message
* @return {Observable<Message>} an observable of converted Protobuf messages
*/
static map(observable, typeUrl) {
return observable.pipe(
map(object => ObjectToProto.convert(object, typeUrl))
);
}
}