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/*
*
* 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 path = require('path');
var fs = require('fs');
var SSL_ROOTS_PATH = path.resolve(__dirname, '..', '..', 'etc', 'roots.pem');
var _ = require('lodash');
var ProtoBuf = require('protobufjs');
var client = require('./src/client.js');
var server = require('./src/server.js');
var common = require('./src/common.js');
var Metadata = require('./src/metadata.js');
var grpc = require('./src/grpc_extension');
grpc.setDefaultRootsPem(fs.readFileSync(SSL_ROOTS_PATH, 'ascii'));
/**
* Load a gRPC object from an existing ProtoBuf.Reflect object.
* @param {ProtoBuf.Reflect.Namespace} value The ProtoBuf object to load.
* @param {Object=} options Options to apply to the loaded object
* @return {Object<string, *>} The resulting gRPC object
*/
exports.loadObject = function loadObject(value, options) {
var result = {};
if (value.className === 'Namespace') {
_.each(value.children, function(child) {
result[child.name] = loadObject(child, options);
});
return result;
} else if (value.className === 'Service') {
return client.makeProtobufClientConstructor(value, options);
} else if (value.className === 'Message' || value.className === 'Enum') {
return value.build();
} else {
return value;
}
};
var loadObject = exports.loadObject;
/**
* Load a gRPC object from a .proto file. The options object can provide the
* following options:
* - convertFieldsToCamelCase: Loads this file with that option on protobuf.js
* set as specified. See
* https://github.com/dcodeIO/protobuf.js/wiki/Advanced-options for details
* - binaryAsBase64: deserialize bytes values as base64 strings instead of
* Buffers. Defaults to false
* - longsAsStrings: deserialize long values as strings instead of objects.
* Defaults to true
* - deprecatedArgumentOrder: Use the beta method argument order for client
* methods, with optional arguments after the callback. Defaults to false.
* This option is only a temporary stopgap measure to smooth an API breakage.
* It is deprecated, and new code should not use it.
* @param {string|{root: string, file: string}} filename The file to load
* @param {string=} format The file format to expect. Must be either 'proto' or
* 'json'. Defaults to 'proto'
* @param {Object=} options Options to apply to the loaded file
* @return {Object<string, *>} The resulting gRPC object
*/
exports.load = function load(filename, format, options) {
if (!format) {
format = 'proto';
}
var convertFieldsToCamelCaseOriginal = ProtoBuf.convertFieldsToCamelCase;
if(options && options.hasOwnProperty('convertFieldsToCamelCase')) {
ProtoBuf.convertFieldsToCamelCase = options.convertFieldsToCamelCase;
}
var builder;
try {
switch(format) {
case 'proto':
builder = ProtoBuf.loadProtoFile(filename);
break;
case 'json':
builder = ProtoBuf.loadJsonFile(filename);
break;
default:
throw new Error('Unrecognized format "' + format + '"');
}
} finally {
ProtoBuf.convertFieldsToCamelCase = convertFieldsToCamelCaseOriginal;
}
return loadObject(builder.ns, options);
};
var log_template = _.template(
'{severity} {timestamp}\t{file}:{line}]\t{message}',
{interpolate: /{([\s\S]+?)}/g});
/**
* Sets the logger function for the gRPC module. For debugging purposes, the C
* core will log synchronously directly to stdout unless this function is
* called. Note: the output format here is intended to be informational, and
* is not guaranteed to stay the same in the future.
* Logs will be directed to logger.error.
* @param {Console} logger A Console-like object.
*/
exports.setLogger = function setLogger(logger) {
common.logger = logger;
grpc.setDefaultLoggerCallback(function(file, line, severity,
message, timestamp) {
logger.error(log_template({
file: path.basename(file),
line: line,
severity: severity,
message: message,
timestamp: timestamp.toISOString()
}));
});
};
/**
* Sets the logger verbosity for gRPC module logging. The options are members
* of the grpc.logVerbosity map.
* @param {Number} verbosity The minimum severity to log
*/
exports.setLogVerbosity = function setLogVerbosity(verbosity) {
common.logVerbosity = verbosity;
grpc.setLogVerbosity(verbosity);
};
/**
* @see module:src/server.Server
*/
exports.Server = server.Server;
/**
* @see module:src/metadata
*/
exports.Metadata = Metadata;
/**
* Status name to code number mapping
*/
exports.status = grpc.status;
/**
* Propagate flag name to number mapping
*/
exports.propagate = grpc.propagate;
/**
* Call error name to code number mapping
*/
exports.callError = grpc.callError;
/**
* Write flag name to code number mapping
*/
exports.writeFlags = grpc.writeFlags;
/**
* Log verbosity setting name to code number mapping
*/
exports.logVerbosity = grpc.logVerbosity;
/**
* Credentials factories
*/
exports.credentials = require('./src/credentials.js');
/**
* ServerCredentials factories
*/
exports.ServerCredentials = grpc.ServerCredentials;
/**
* @see module:src/client.makeClientConstructor
*/
exports.makeGenericClientConstructor = client.makeClientConstructor;
/**
* @see module:src/client.getClientChannel
*/
exports.getClientChannel = client.getClientChannel;
/**
* @see module:src/client.waitForClientReady
*/
exports.waitForClientReady = client.waitForClientReady;
exports.closeClient = function closeClient(client_obj) {
client.getClientChannel(client_obj).close();
};
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