43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
////////////////////////////////////////////////////////////////////////////
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//
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// This is an example of using a project-local server.js to intercept
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// the default bootstrapping process.
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//
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const cds = require ('@sap/cds')
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// Connect CatalogService and ReviewsService when all are served...
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cds.once('served', async ({CatalogService}) => {
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// reflect entity definitions used below...
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const { Books } = cds.entities('sap.capire.bookshop')
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const { Reviews } = cds.entities('ReviewsService')
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const messaging = await cds.connect.to('messaging')
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// prepend the following handler so it overrides the default handler
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CatalogService.prepend (srv => srv.on ('READ', 'Books/reviews', (req) => {
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console.debug ('> delegating request to ReviewsService')
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const [id] = req.params, { columns, limit } = req.query.SELECT
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return SELECT(columns).from(Reviews).limit(limit).where({subject:String(id)})
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}))
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messaging.on ('reviewed', (msg) => {
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console.debug ('> received:', msg.event, msg.data)
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const { subject, rating } = msg.data
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return UPDATE(Books,subject).with({rating})
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})
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})
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// Other bootstrapping events you could hook in to...
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/* eslint-disable no-unused-vars */
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cds.on('bootstrap',(app) => {/* ... */})
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cds.on('loaded', (model) => {/* ... */})
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cds.on('connect', (srv) => {/* ... */})
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cds.on('serving', (srv) => {/* ... */})
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cds.once('served', (all) => {/* ... */})
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cds.once('listening', ({server,url}) => {/* ... */})
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// Delegate bootstrapping to built-in server.js
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module.exports = cds.server
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