83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
/*
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* Licensed to Elasticsearch B.V. under one or more contributor
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* license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright
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* ownership. Elasticsearch B.V. licenses this file to you under
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* the Apache License, Version 2.0 (the "License"); you may
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* 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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'use strict'
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const { stringify } = require('querystring')
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const debug = require('debug')('elasticsearch')
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const { SerializationError, DeserializationError } = require('./errors')
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class Serializer {
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serialize (object) {
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debug('Serializing', object)
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try {
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var json = JSON.stringify(object)
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} catch (err) {
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throw new SerializationError(err.message)
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}
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return json
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}
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deserialize (json) {
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debug('Deserializing', json)
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try {
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var object = JSON.parse(json)
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} catch (err) {
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throw new DeserializationError(err.message)
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}
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return object
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}
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ndserialize (array) {
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debug('ndserialize', array)
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if (Array.isArray(array) === false) {
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throw new SerializationError('The argument provided is not an array')
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}
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var ndjson = ''
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for (var i = 0, len = array.length; i < len; i++) {
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if (typeof array[i] === 'string') {
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ndjson += array[i] + '\n'
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} else {
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ndjson += this.serialize(array[i]) + '\n'
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}
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}
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return ndjson
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}
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qserialize (object) {
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debug('qserialize', object)
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if (object == null) return ''
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if (typeof object === 'string') return object
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// arrays should be serialized as comma separated list
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const keys = Object.keys(object)
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for (var i = 0, len = keys.length; i < len; i++) {
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var key = keys[i]
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// elasticsearch will complain for keys without a value
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if (object[key] === undefined) {
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delete object[key]
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} else if (Array.isArray(object[key]) === true) {
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object[key] = object[key].join(',')
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}
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}
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return stringify(object)
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}
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}
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module.exports = Serializer
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