rsocket-rpc-frames/dist/Metadata.js

RSocket JavaScript RPC Frames Definitions

/**
 * Copyright (c) 2017-present, Netifi Inc.
 *
 * 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';

/* eslint-disable consistent-return, no-bitwise */

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.TRACING_LENGTH_SIZE = exports.METHOD_LENGTH_SIZE = exports.SERVICE_LENGTH_SIZE = exports.VERSION_SIZE = exports.VERSION = undefined;
exports.encodeMetadata = encodeMetadata;
exports.getVersion = getVersion;
exports.getService = getService;
exports.getMethod = getMethod;
exports.getTracing = getTracing;
exports.getMetadata = getMetadata;

var _rsocketCore = require('rsocket-core');

/**
 * Version
 */
var VERSION = exports.VERSION = 1;

var VERSION_SIZE = exports.VERSION_SIZE = 2;
var SERVICE_LENGTH_SIZE = exports.SERVICE_LENGTH_SIZE = 2;
var METHOD_LENGTH_SIZE = exports.METHOD_LENGTH_SIZE = 2;
var TRACING_LENGTH_SIZE = exports.TRACING_LENGTH_SIZE = 2;

function encodeMetadata(service, method, tracing, metadata) {
  var serviceLength = _rsocketCore.UTF8Encoder.byteLength(service);
  var methodLength = _rsocketCore.UTF8Encoder.byteLength(method);
  var metadataLength = _rsocketCore.BufferEncoder.byteLength(metadata);
  // We can't overload the method call directly and the code generator currently only populates
  // the first 3 parameters
  if (undefined === tracing) {
    tracing = (0, _rsocketCore.createBuffer)(0);
  }
  var tracingLength = _rsocketCore.BufferEncoder.byteLength(tracing);

  var buffer = (0, _rsocketCore.createBuffer)(VERSION_SIZE + SERVICE_LENGTH_SIZE + serviceLength + METHOD_LENGTH_SIZE + methodLength + TRACING_LENGTH_SIZE + tracingLength + metadataLength);

  var offset = buffer.writeUInt16BE(VERSION, 0);

  offset = buffer.writeUInt16BE(serviceLength, offset);
  offset = _rsocketCore.UTF8Encoder.encode(service, buffer, offset, offset + serviceLength);

  offset = buffer.writeUInt16BE(methodLength, offset);
  offset = _rsocketCore.UTF8Encoder.encode(method, buffer, offset, offset + methodLength);

  offset = buffer.writeUInt16BE(tracingLength, offset);
  offset = _rsocketCore.BufferEncoder.encode(tracing, buffer, offset, offset + tracingLength);

  _rsocketCore.BufferEncoder.encode(metadata, buffer, offset, offset + metadataLength);

  return buffer;
}

function getVersion(buffer) {
  return buffer.readUInt16BE(0);
}

function getService(buffer) {
  var offset = VERSION_SIZE;

  var serviceLength = buffer.readUInt16BE(offset);
  offset += SERVICE_LENGTH_SIZE;

  return _rsocketCore.UTF8Encoder.decode(buffer, offset, offset + serviceLength);
}

function getMethod(buffer) {
  var offset = VERSION_SIZE;

  var serviceLength = buffer.readUInt16BE(offset);
  offset += SERVICE_LENGTH_SIZE + serviceLength;

  var methodLength = buffer.readUInt16BE(offset);
  offset += METHOD_LENGTH_SIZE;

  return _rsocketCore.UTF8Encoder.decode(buffer, offset, offset + methodLength);
}

function getTracing(buffer) {
  var offset = VERSION_SIZE;

  var serviceLength = buffer.readUInt16BE(offset);
  offset += SERVICE_LENGTH_SIZE + serviceLength;

  var methodLength = buffer.readUInt16BE(offset);
  offset += METHOD_LENGTH_SIZE + methodLength;

  var tracingLength = buffer.readUInt16BE(offset);
  offset += TRACING_LENGTH_SIZE;

  return _rsocketCore.BufferEncoder.decode(buffer, offset, offset + tracingLength);
}

function getMetadata(buffer) {
  var offset = VERSION_SIZE;

  var serviceLength = buffer.readUInt16BE(offset);
  offset += SERVICE_LENGTH_SIZE + serviceLength;

  var methodLength = buffer.readUInt16BE(offset);
  offset += METHOD_LENGTH_SIZE + methodLength;

  var tracingLength = buffer.readUInt16BE(offset);
  offset += TRACING_LENGTH_SIZE + tracingLength;

  return _rsocketCore.BufferEncoder.decode(buffer, offset, buffer.length);
}