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api_remotes_content_ContentConnection.js.html
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api_remotes_content_ContentConnection.js.html
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<h1>api/remotes/content/ContentConnection.js</h1>
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<section>
<article>
<pre class="prettyprint source linenums"><code>import { Meteor } from 'meteor/meteor'
import { DDP } from 'meteor/ddp-client'
/**
* Manages connection and calls to the content server.
* @category api
* @namespace
*/
const ContentConnection = {}
let contentConnection
const contentUrl = Meteor.settings.remotes.content.url
/**
* Establishes a basic, unauthenticated connection.
* @param log {function} log function
* @return {Promise<void>}
*/
ContentConnection.connect = ({ log } = {}) => {
return new Promise((resolve, reject) => {
if (log) log('establish connection to', contentUrl)
contentConnection = DDP.connect(contentUrl, {
retry: false,
onConnected: err => {
if (err) {
console.error(err)
return reject(err)
}
if (log) log('connection established with', contentUrl)
resolve()
}
})
})
}
/**
* Returns, whether the connection is fully established
* @return {boolean}
*/
ContentConnection.isConnected = () =>
typeof contentConnection?.status === 'function'
? contentConnection.status()?.status === 'connected'
: false
/**
* Get doc(s) from a collection
* @param name {string} name of the context to get docs from
* @param ids {Array?} optional array of ids to get
* @param log
* @return {Promise}
*/
ContentConnection.get = ({ name, ids = [], log }) => {
return new Promise((resolve) => {
const methodName = ids.length > 0
? `${name}.methods.get`
: `${name}.methods.getAll`
const token = getToken({ name: methodName })
const params = { token }
if (ids.length > 0) {
params.ids = ids
}
if (log) log('call', methodName)
contentConnection.call(methodName, params, (err, res) => {
if (err) {
if (log) {
log(err.message)
}
return resolve([])
}
return resolve(res)
})
})
}
/// /////////////////////////////////////////////////////////////////////////////
//
// INTERNAL* @obj
//
/// /////////////////////////////////////////////////////////////////////////////
/**
* generates a function to create jwt
* @private
*/
const getToken = (function () {
const { content } = Meteor.settings.remotes
const nJwt = require('njwt')
const signingKey = content.jwt.key
const url = Meteor.absoluteUrl()
const claims = {
iss: url.substring(0, url.length - 1), // The URL of your service
sub: content.jwt.sub // The UID of the user in your system
}
return ({ name }) => {
const jwt = nJwt.create({ scope: name, ...claims }, signingKey)
jwt.setExpiration(new Date().getTime() + (60 * 1000)) // One minute from now
return jwt.compact()
}
})()
export { ContentConnection }
</code></pre>
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