text: /**
   * @license
   * Copyright 2015 gRPC authors.
   *
   * 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
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  
  'use strict';
  
  var path = require('path');
  var fs = require('fs');
  var util = require('util');
  
  var SSL_ROOTS_PATH = path.resolve(__dirname, 'deps', 'grpc', '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');
  
  var protobuf_js_5_common = require('./src/protobuf_js_5_common');
  var protobuf_js_6_common = require('./src/protobuf_js_6_common');
  
  var constants = require('./src/constants.js');
  
  grpc.setDefaultRootsPem(fs.readFileSync(SSL_ROOTS_PATH, 'ascii'));
  
  /**
   * @namespace grpc
   */
  
  /**
   * Load a ProtoBuf.js object as a gRPC object.
   * @memberof grpc
   * @alias grpc.loadObject
   * @param {Object} value The ProtoBuf.js reflection object to load
   * @param {Object=} options Options to apply to the loaded file
   * @param {bool=} [options.binaryAsBase64=false] deserialize bytes values as
   *     base64 strings instead of Buffers
   * @param {bool=} [options.longsAsStrings=true] deserialize long values as
   *     strings instead of objects
   * @param {bool=} [options.enumsAsStrings=true] deserialize enum values as
   *     strings instead of numbers. Only works with Protobuf.js 6 values.
   * @param {bool=} [options.deprecatedArgumentOrder=false] use the beta method
   *     argument order for client methods, with optional arguments after the
   *     callback. This option is only a temporary stopgap measure to smooth an
   *     API breakage. It is deprecated, and new code should not use it.
   * @param {(number|string)=} [options.protobufjsVersion='detect'] 5 and 6
   *     respectively indicate that an object from the corresponding version of
   *     Protobuf.js is provided in the value argument. If the option is 'detect',
   *     gRPC will guess what the version is based on the structure of the value.
   * @return {Object<string, *>} The resulting gRPC object.
   */
  exports.loadObject = function loadObject(value, options) {
    options = _.defaults(options, common.defaultGrpcOptions);
    options = _.defaults(options, {'protobufjsVersion': 'detect'});
    var protobufjsVersion;
    if (options.protobufjsVersion === 'detect') {
      if (protobuf_js_6_common.isProbablyProtobufJs6(value)) {
        protobufjsVersion = 6;
      } else if (protobuf_js_5_common.isProbablyProtobufJs5(value)) {
        protobufjsVersion = 5;
      } else {
        var error_message = 'Could not detect ProtoBuf.js version. Please ' +
            'specify the version number with the "protobufjsVersion" option';
        throw new Error(error_message);
      }
    } else {
      protobufjsVersion = options.protobufjsVersion;
    }
    switch (protobufjsVersion) {
      case 6: return protobuf_js_6_common.loadObject(value, options);
      case 5:
      return protobuf_js_5_common.loadObject(value, options);
      default:
      throw new Error('Unrecognized protobufjsVersion', protobufjsVersion);
    }
  };
  
  var loadObject = exports.loadObject;
  
  /**
   * Load a gRPC object from a .proto file.
   * @memberof grpc
   * @alias grpc.load
   * @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
   * @param {bool=} [options.convertFieldsToCamelCase=false] Load this file with
   *     field names in camel case instead of their original case
   * @param {bool=} [options.binaryAsBase64=false] deserialize bytes values as
   *     base64 strings instead of Buffers
   * @param {bool=} [options.longsAsStrings=true] deserialize long values as
   *     strings instead of objects
   * @param {bool=} [options.deprecatedArgumentOrder=false] use the beta method
   *     argument order for client methods, with optional arguments after the
   *     callback. This option is only a temporary stopgap measure to smooth an
   *     API breakage. It is deprecated, and new code should not use it.
   * @return {Object<string, *>} The resulting gRPC object
   */
  exports.load = util.deprecate(function load(filename, format, options) {
    options = _.defaults(options, common.defaultGrpcOptions);
    options.protobufjsVersion = 5;
    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;
    }
  
    if (!builder) {
      throw new Error('Could not load file "' + filename + '"');
    }
  
    return loadObject(builder.ns, options);
  }, 'grpc.load: Use the @grpc/proto-loader module with grpc.loadPackageDefinition instead');
  
  /**
   * Load a gRPC package definition as a gRPC object hierarchy
   * @param packageDef grpc~PackageDefinition The package definition object
   * @return {Object<string, *>} The resulting gRPC object
   */
  exports.loadPackageDefinition = function loadPackageDefintion(packageDef) {
    const result = {};
    for (const serviceFqn in packageDef) {
      const service = packageDef[serviceFqn];
      const nameComponents = serviceFqn.split('.');
      const serviceName = nameComponents[nameComponents.length-1];
      let current = result;
      for (const packageName of nameComponents.slice(0, -1)) {
        if (!current[packageName]) {
          current[packageName] = {};
        }
        current = current[packageName];
      }
      current[serviceName] = client.makeClientConstructor(service, serviceName, {});
    }
    return result;
  };
  
  var log_template = function(args) {
    var file = args.file;
    var line = args.line;
    var severity = args.severity;
    var message = args.message;
    var timestamp = args.timestamp;
    return `${severity} ${timestamp}\t${file}:${line}]\t${message}`;
  };
  
  /**
   * 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.
   * @memberof grpc
   * @alias grpc.setLogger
   * @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.
   * @memberof grpc
   * @alias grpc.setLogVerbosity
   * @param {Number} verbosity The minimum severity to log
   */
  exports.setLogVerbosity = function setLogVerbosity(verbosity) {
    common.logVerbosity = verbosity;
    grpc.setLogVerbosity(verbosity);
  };
  
  exports.Server = server.Server;
  
  exports.Metadata = Metadata;
  
  exports.status = constants.status;
  
  exports.propagate = constants.propagate;
  
  exports.callError = constants.callError;
  
  exports.writeFlags = constants.writeFlags;
  
  exports.logVerbosity = constants.logVerbosity;
  
  exports.methodTypes = constants.methodTypes;
  
  exports.credentials = require('./src/credentials.js');
  
  /**
   * ServerCredentials factories
   * @constructor ServerCredentials
   * @memberof grpc
   */
  exports.ServerCredentials = grpc.ServerCredentials;
  
  /**
   * Create insecure server credentials
   * @name grpc.ServerCredentials.createInsecure
   * @kind function
   * @return {grpc.ServerCredentials}
   */
  
  /**
   * A private key and certificate pair
   * @typedef {Object} grpc.ServerCredentials~keyCertPair
   * @property {Buffer} private_key The server's private key
   * @property {Buffer} cert_chain The server's certificate chain
   */
  
  /**
   * Create SSL server credentials
   * @name grpc.ServerCredentials.createSsl
   * @kind function
   * @param {?Buffer} rootCerts Root CA certificates for validating client
   *     certificates
   * @param {Array<grpc.ServerCredentials~keyCertPair>} keyCertPairs A list of
   *     private key and certificate chain pairs to be used for authenticating
   *     the server
   * @param {boolean} [checkClientCertificate=false] Indicates that the server
   *     should request and verify the client's certificates
   * @return {grpc.ServerCredentials}
   */
  
  exports.makeGenericClientConstructor = client.makeClientConstructor;
  
  exports.getClientChannel = client.getClientChannel;
  
  exports.waitForClientReady = client.waitForClientReady;
  
  exports.StatusBuilder = client.StatusBuilder;
  exports.ListenerBuilder = client.ListenerBuilder;
  exports.RequesterBuilder = client.RequesterBuilder;
  exports.InterceptingCall = client.InterceptingCall;
  
  /**
   * @memberof grpc
   * @alias grpc.closeClient
   * @param {grpc.Client} client_obj The client to close
   */
  exports.closeClient = function closeClient(client_obj) {
    client.Client.prototype.close.apply(client_obj);
  };
  
  exports.Client = client.Client;
  