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Lukas Nowy
381
express-server/node_modules/grpc/index.js
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381
express-server/node_modules/grpc/index.js
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/**
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* @license
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* Copyright 2015 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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'use strict';
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var path = require('path');
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var fs = require('fs');
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var util = require('util');
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var SSL_ROOTS_PATH = path.resolve(__dirname, 'deps', 'grpc', 'etc', 'roots.pem');
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var _ = require('lodash');
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var ProtoBuf = require('protobufjs');
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var client = require('./src/client.js');
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var server = require('./src/server.js');
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var common = require('./src/common.js');
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var Metadata = require('./src/metadata.js');
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var grpc = require('./src/grpc_extension');
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var protobuf_js_5_common = require('./src/protobuf_js_5_common');
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var protobuf_js_6_common = require('./src/protobuf_js_6_common');
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var constants = require('./src/constants.js');
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grpc.setDefaultRootsPem(fs.readFileSync(SSL_ROOTS_PATH, 'ascii'));
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/**
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* @namespace grpc
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*/
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/**
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* Load a ProtoBuf.js object as a gRPC object.
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* @memberof grpc
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* @alias grpc.loadObject
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* @param {Object} value The ProtoBuf.js reflection object to load
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* @param {Object=} options Options to apply to the loaded file
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* @param {bool=} [options.binaryAsBase64=false] deserialize bytes values as
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* base64 strings instead of Buffers
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* @param {bool=} [options.longsAsStrings=true] deserialize long values as
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* strings instead of objects
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* @param {bool=} [options.enumsAsStrings=true] deserialize enum values as
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* strings instead of numbers. Only works with Protobuf.js 6 values.
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* @param {bool=} [options.deprecatedArgumentOrder=false] use the beta method
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* argument order for client methods, with optional arguments after the
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* callback. This option is only a temporary stopgap measure to smooth an
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* API breakage. It is deprecated, and new code should not use it.
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* @param {(number|string)=} [options.protobufjsVersion='detect'] 5 and 6
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* respectively indicate that an object from the corresponding version of
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* Protobuf.js is provided in the value argument. If the option is 'detect',
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* gRPC will guess what the version is based on the structure of the value.
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* @return {Object<string, *>} The resulting gRPC object.
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*/
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exports.loadObject = function loadObject(value, options) {
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options = _.defaults(options, common.defaultGrpcOptions);
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options = _.defaults(options, {'protobufjsVersion': 'detect'});
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var protobufjsVersion;
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if (options.protobufjsVersion === 'detect') {
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if (protobuf_js_6_common.isProbablyProtobufJs6(value)) {
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protobufjsVersion = 6;
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} else if (protobuf_js_5_common.isProbablyProtobufJs5(value)) {
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protobufjsVersion = 5;
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} else {
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var error_message = 'Could not detect ProtoBuf.js version. Please ' +
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'specify the version number with the "protobufjsVersion" option';
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throw new Error(error_message);
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}
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} else {
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protobufjsVersion = options.protobufjsVersion;
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}
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switch (protobufjsVersion) {
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case 6: return protobuf_js_6_common.loadObject(value, options);
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case 5:
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return protobuf_js_5_common.loadObject(value, options);
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default:
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throw new Error('Unrecognized protobufjsVersion', protobufjsVersion);
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}
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};
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var loadObject = exports.loadObject;
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/**
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* Load a gRPC object from a .proto file.
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* @deprecated Use the {@link https://www.npmjs.com/package/@grpc/proto-loader|proto-loader module}
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with grpc.loadPackageDefinition instead.
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* @memberof grpc
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* @alias grpc.load
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* @param {string|{root: string, file: string}} filename The file to load
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* @param {string=} format The file format to expect. Must be either 'proto' or
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* 'json'. Defaults to 'proto'
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* @param {Object=} options Options to apply to the loaded file
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* @param {bool=} [options.convertFieldsToCamelCase=false] Load this file with
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* field names in camel case instead of their original case
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* @param {bool=} [options.binaryAsBase64=false] deserialize bytes values as
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* base64 strings instead of Buffers
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* @param {bool=} [options.longsAsStrings=true] deserialize long values as
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* strings instead of objects
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* @param {bool=} [options.deprecatedArgumentOrder=false] use the beta method
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* argument order for client methods, with optional arguments after the
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* callback. This option is only a temporary stopgap measure to smooth an
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* API breakage. It is deprecated, and new code should not use it.
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* @return {Object<string, *>} The resulting gRPC object
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*/
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exports.load = util.deprecate(function load(filename, format, options) {
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options = _.defaults(options, common.defaultGrpcOptions);
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options.protobufjsVersion = 5;
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if (!format) {
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format = 'proto';
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}
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var convertFieldsToCamelCaseOriginal = ProtoBuf.convertFieldsToCamelCase;
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if(options && options.hasOwnProperty('convertFieldsToCamelCase')) {
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ProtoBuf.convertFieldsToCamelCase = options.convertFieldsToCamelCase;
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}
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var builder;
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try {
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switch(format) {
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case 'proto':
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builder = ProtoBuf.loadProtoFile(filename);
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break;
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case 'json':
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builder = ProtoBuf.loadJsonFile(filename);
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break;
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default:
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throw new Error('Unrecognized format "' + format + '"');
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}
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} finally {
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ProtoBuf.convertFieldsToCamelCase = convertFieldsToCamelCaseOriginal;
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}
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if (!builder) {
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throw new Error('Could not load file "' + filename + '"');
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}
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return loadObject(builder.ns, options);
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}, 'grpc.load: Use the @grpc/proto-loader module with grpc.loadPackageDefinition instead');
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/**
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* Load a gRPC package definition as a gRPC object hierarchy
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* @param packageDef grpc~PackageDefinition The package definition object
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* @return {Object<string, *>} The resulting gRPC object
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*/
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exports.loadPackageDefinition = function loadPackageDefintion(packageDef) {
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const result = {};
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for (const serviceFqn in packageDef) {
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const service = packageDef[serviceFqn];
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const nameComponents = serviceFqn.split('.');
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const serviceName = nameComponents[nameComponents.length-1];
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let current = result;
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for (const packageName of nameComponents.slice(0, -1)) {
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if (!current[packageName]) {
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current[packageName] = {};
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}
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current = current[packageName];
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}
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current[serviceName] = client.makeClientConstructor(service, serviceName, {});
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}
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return result;
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};
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var log_template = function(args) {
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var file = args.file;
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var line = args.line;
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var severity = args.severity;
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var message = args.message;
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var timestamp = args.timestamp;
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return `${severity} ${timestamp}\t${file}:${line}]\t${message}`;
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};
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/**
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* Sets the logger function for the gRPC module. For debugging purposes, the C
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* core will log synchronously directly to stdout unless this function is
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* called. Note: the output format here is intended to be informational, and
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* is not guaranteed to stay the same in the future.
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* Logs will be directed to logger.error.
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* @memberof grpc
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* @alias grpc.setLogger
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* @param {Console} logger A Console-like object.
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*/
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exports.setLogger = function setLogger(logger) {
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common.logger = logger;
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grpc.setDefaultLoggerCallback(function(file, line, severity,
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message, timestamp) {
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logger.error(log_template({
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file: path.basename(file),
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line: line,
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severity: severity,
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message: message,
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timestamp: timestamp.toISOString()
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}));
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});
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};
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/**
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* Sets the logger verbosity for gRPC module logging. The options are members
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* of the grpc.logVerbosity map.
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* @memberof grpc
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* @alias grpc.setLogVerbosity
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* @param {Number} verbosity The minimum severity to log
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*/
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exports.setLogVerbosity = function setLogVerbosity(verbosity) {
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common.logVerbosity = verbosity;
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grpc.setLogVerbosity(verbosity);
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};
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exports.Server = server.Server;
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exports.Metadata = Metadata;
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exports.status = constants.status;
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exports.propagate = constants.propagate;
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exports.callError = constants.callError;
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exports.writeFlags = constants.writeFlags;
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exports.logVerbosity = constants.logVerbosity;
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exports.methodTypes = constants.methodTypes;
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exports.connectivityState = constants.connectivityState;
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exports.credentials = require('./src/credentials.js');
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/**
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* ServerCredentials factories
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* @constructor ServerCredentials
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* @memberof grpc
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*/
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exports.ServerCredentials = grpc.ServerCredentials;
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/**
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* Create insecure server credentials
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* @name grpc.ServerCredentials.createInsecure
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* @kind function
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* @return {grpc.ServerCredentials}
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*/
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/**
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* A private key and certificate pair
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* @typedef {Object} grpc.ServerCredentials~keyCertPair
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* @property {Buffer} private_key The server's private key
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* @property {Buffer} cert_chain The server's certificate chain
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*/
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/**
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* Create SSL server credentials
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* @name grpc.ServerCredentials.createSsl
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* @kind function
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* @param {?Buffer} rootCerts Root CA certificates for validating client
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* certificates
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* @param {Array<grpc.ServerCredentials~keyCertPair>} keyCertPairs A list of
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* private key and certificate chain pairs to be used for authenticating
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* the server
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* @param {boolean} [checkClientCertificate=false] Indicates that the server
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* should request and verify the client's certificates
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* @return {grpc.ServerCredentials}
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*/
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exports.makeGenericClientConstructor = client.makeClientConstructor;
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exports.getClientChannel = client.getClientChannel;
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exports.waitForClientReady = client.waitForClientReady;
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exports.StatusBuilder = client.StatusBuilder;
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exports.ListenerBuilder = client.ListenerBuilder;
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exports.RequesterBuilder = client.RequesterBuilder;
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exports.InterceptingCall = client.InterceptingCall;
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/**
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* @memberof grpc
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* @alias grpc.closeClient
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* @param {grpc.Client} client_obj The client to close
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*/
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exports.closeClient = function closeClient(client_obj) {
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client.Client.prototype.close.apply(client_obj);
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};
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exports.Client = client.Client;
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/**
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* @typedef {Object.<string, string | number>} grpc~ChannelOptions
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*/
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/**
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* This constructor API is almost identical to the Client constructor,
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* except that some of the options for the Client constructor are not valid
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* here.
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* @constructor Channel
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* @memberof grpc
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* @param {string} target The address of the server to connect to
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* @param {grpc.ChannelCredentials} credentials Channel credentials to use when connecting
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* @param {grpc~ChannelOptions} options A map of channel options that will be passed to the core
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*/
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exports.Channel = grpc.Channel;
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/**
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* Close the channel. This has the same functionality as the existing grpc.Client#close
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* @name grpc.Channel#close
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* @kind function
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*/
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/**
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* Return the target that this channel connects to
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* @name grpc.Channel#getTarget
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* @kind function
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* @return {string} The target
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*/
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/**
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* Get the channel's current connectivity state.
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* @name grpc.Channel#getConnectivityState
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* @kind function
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* @param {boolean} tryToConnect If true, the channel will start connecting if it is
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* idle. Otherwise, idle channels will only start connecting when a
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* call starts.
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* @return {grpc.connectivityState} The current connectivity state
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*/
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/**
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* @callback grpc.Channel~watchConnectivityStateCallback
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* @param {Error?} error
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*/
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/**
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* Watch for connectivity state changes.
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* @name grpc.Channel#watchConnectivityState
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* @kind function
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* @param {grpc.ConnectivityState} currentState The state to watch for
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* transitions from. This should always be populated by calling
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* getConnectivityState immediately before.
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* @param {grpc~Deadline} deadline A deadline for waiting for a state change
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* @param {grpc.Channel~watchConnectivityStateCallback} callback Called with no
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* error when the state changes, or with an error if the deadline passes
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* without a state change
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*/
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/**
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* @name grpc~Call
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* @kind class
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*/
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/**
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* Create a call object. Call is an opaque type used by the {@link grpc.Client}
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* and {@link grpc.Server} classes. This function is called by the gRPC library
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* when starting a request. Implementers should return an instance of Call that
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* is returned from calling createCall on an instance of the provided Channel
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* class.
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* @name grpc.Channel#createCall
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* @kind function
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* @param {string} method The full method string to request
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* @param {grpc~Deadline} deadline The call deadline
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* @param {string|null} host A host string override for making the request
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* @param {grpc~Call|null} parentCall A server call to propagate some
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* information from
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* @param {number|null} propagateFlags A bitwise combination of elements of
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* {@link grpc.propagate} that indicates what information to propagate
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* from parentCall
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* @return {grpc~Call}
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*/
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