Add HTTP fetcher

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Yarmo Mackenbach 2021-04-12 12:14:41 +02:00
parent becc579790
commit e2a6aff9d8
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2 changed files with 73 additions and 0 deletions

72
src/fetcher/http.js Normal file
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@ -0,0 +1,72 @@
/*
Copyright 2021 Yarmo Mackenbach
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.
*/
const bent = require('bent')
const req = bent('GET')
module.exports = async (url, format) => {
let timeoutHandle
const timeoutPromise = new Promise((resolve, reject) => {
timeoutHandle = setTimeout(
() => reject(new Error('Request was timed out')),
5000
)
})
const fetchPromise = new Promise((resolve, reject) => {
if (!url) {
reject('No valid URI provided')
return
}
switch (format) {
case 'json':
req(url, null, {
Accept: 'application/json',
'User-Agent': `doipjs/${require('../package.json').version}`,
})
.then(async (res) => {
return await res.json()
})
.then((res) => {
resolve(res)
})
.catch((e) => {
reject(e)
})
break
case 'text':
req(url)
.then(async (res) => {
return await res.text()
})
.then((res) => {
resolve(res)
})
.catch((e) => {
reject(e)
})
break
default:
reject('No specified data format')
break
}
})
return Promise.race([fetchPromise, timeoutPromise]).then((result) => {
clearTimeout(timeoutHandle)
return result
})
}

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@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
limitations under the License. limitations under the License.
*/ */
exports.dns = require('./dns') exports.dns = require('./dns')
exports.http = require('./http')
exports.irc = require('./irc') exports.irc = require('./irc')
exports.matrix = require('./matrix') exports.matrix = require('./matrix')
exports.twitter = require('./twitter') exports.twitter = require('./twitter')