| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * 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'; |
| |
| var _ = require('underscore'); |
| |
| var ProtoBuf = require('protobufjs'); |
| |
| var client = require('./src/client.js'); |
| |
| var server = require('./src/server.js'); |
| |
| var grpc = require('bindings')('grpc'); |
| |
| /** |
| * Load a gRPC object from an existing ProtoBuf.Reflect object. |
| * @param {ProtoBuf.Reflect.Namespace} value The ProtoBuf object to load. |
| * @return {Object<string, *>} The resulting gRPC object |
| */ |
| function loadObject(value) { |
| var result = {}; |
| if (value.className === 'Namespace') { |
| _.each(value.children, function(child) { |
| result[child.name] = loadObject(child); |
| }); |
| return result; |
| } else if (value.className === 'Service') { |
| return client.makeProtobufClientConstructor(value); |
| } else if (value.className === 'Message' || value.className === 'Enum') { |
| return value.build(); |
| } else { |
| return value; |
| } |
| } |
| |
| /** |
| * Load a gRPC object from a .proto file. |
| * @param {string} filename The file to load |
| * @param {string=} format The file format to expect. Must be either 'proto' or |
| * 'json'. Defaults to 'proto' |
| * @return {Object<string, *>} The resulting gRPC object |
| */ |
| function load(filename, format) { |
| if (!format) { |
| format = 'proto'; |
| } |
| var builder; |
| switch(format) { |
| case 'proto': |
| builder = ProtoBuf.loadProtoFile(filename); |
| break; |
| case 'json': |
| builder = ProtoBuf.loadJsonFile(filename); |
| break; |
| default: |
| throw new Error('Unrecognized format "' + format + '"'); |
| } |
| |
| return loadObject(builder.ns); |
| } |
| |
| /** |
| * Get a function that a client can use to update metadata with authentication |
| * information from a Google Auth credential object, which comes from the |
| * google-auth-library. |
| * @param {Object} credential The credential object to use |
| * @return {function(Object, callback)} Metadata updater function |
| */ |
| function getGoogleAuthDelegate(credential) { |
| /** |
| * Update a metadata object with authentication information. |
| * @param {Object} metadata Metadata object |
| * @param {function(Error, Object)} callback |
| */ |
| return function updateMetadata(metadata, callback) { |
| metadata = _.clone(metadata); |
| if (metadata.Authorization) { |
| metadata.Authorization = _.clone(metadata.Authorization); |
| } else { |
| metadata.Authorization = []; |
| } |
| credential.getAccessToken(function(err, token) { |
| if (err) { |
| callback(err); |
| return; |
| } |
| metadata.Authorization.push('Bearer ' + token); |
| callback(null, metadata); |
| }); |
| }; |
| } |
| |
| /** |
| * See docs for loadObject |
| */ |
| exports.loadObject = loadObject; |
| |
| /** |
| * See docs for load |
| */ |
| exports.load = load; |
| |
| /** |
| * See docs for server.makeServerConstructor |
| */ |
| exports.buildServer = server.makeProtobufServerConstructor; |
| |
| /** |
| * Status name to code number mapping |
| */ |
| exports.status = grpc.status; |
| /** |
| * Call error name to code number mapping |
| */ |
| exports.callError = grpc.callError; |
| |
| /** |
| * Credentials factories |
| */ |
| exports.Credentials = grpc.Credentials; |
| |
| /** |
| * ServerCredentials factories |
| */ |
| exports.ServerCredentials = grpc.ServerCredentials; |
| |
| exports.getGoogleAuthDelegate = getGoogleAuthDelegate; |
| |
| exports.makeGenericClientConstructor = client.makeClientConstructor; |
| |
| exports.makeGenericServerConstructor = server.makeServerConstructor; |