@sap/cds-dk/lib/init/template/approuter/index.js

Command line client and development toolkit for the SAP Cloud Application Programming Model

const cds = require('../../../cds')
const { exists } = cds.utils
const { join } = require('path')
const { readProject } = require('../../projectReader')
const { sort, merge } = require('../../merge')
const {
    srv4, mtxSidecar4, approuter, // Modules
    xsuaa, // BTP Services
    requiredMtxApi, requiredJavaApprouterApi4, providedJavaApprouterApi, // APIs
    requiredAppApi4, providedAppApi,
    approuterMTXRoute,
    approuterMTXRouteJava // xs-app.json config
} = require('../../registries/mta')

module.exports = class ApprouterTemplate extends require('../../plugin') {

    static help() {
        return 'dynamic routing using @sap/approuter'
    }

    static hasInProduction(env) {
        return exists(join(env.folders.app, 'xs-app.json')) || exists(join(env.folders.app, 'router', 'xs-app.json'))
    }

    async run() {
        const { approuterPath } = readProject()
        const appPackageJSONPath = join(approuterPath, 'package.json')
        await merge(__dirname, 'files/package.json').into(appPackageJSONPath)
        await sort(appPackageJSONPath, 'dependencies')
        await merge(__dirname, 'files/default-env.json').into(approuterPath + '/default-env.json')
    }

    async combine() {
        const project = readProject(this.options)
        const { isNodejs, isJava, hasMTXRoute, hasMultitenancy, hasXsuaa, hasMta, hasHelm, hasHelmUnifiedRuntime, hasMTXRouteJava, hasContainerize, srvPath, approuterPath } = project

        if (hasMta) {
            const srv = srv4(srvPath)
            const apis = isJava && hasMultitenancy ? [requiredJavaApprouterApi4(srv), providedJavaApprouterApi] : []
            const mtxSidecar = mtxSidecar4(isJava ? 'mtx/sidecar' : 'gen/mtx/sidecar')
            if (isNodejs && hasMultitenancy) apis.push(requiredMtxApi, requiredAppApi4(mtxSidecar), providedAppApi)
            if (isJava && hasMultitenancy) apis.push(requiredMtxApi)
            const modules = [srv, approuter]
            if (hasMultitenancy) modules.push(mtxSidecar)
            const additions = [...modules, ...apis]
            if (hasXsuaa) additions.push(xsuaa)
            const relationships = []
            if (hasXsuaa) relationships.push({
                insert: [xsuaa, 'name'],
                into: [srv, 'requires', 'name']
            }, {
                insert: [xsuaa, 'name'],
                into: [approuter, 'requires', 'name']
            })
            await merge(__dirname, 'files/mta.yaml.hbs').into('mta.yaml', {
                with: project, additions, relationships,
            })
        }

        if (hasHelm || hasHelmUnifiedRuntime) {
            await merge(__dirname, 'files', 'values.yaml.hbs').into('chart/values.yaml', { with: project })
        }

        if (hasContainerize) {
            const additions = [{
                in: 'modules',
                where: { name: `${project.appName}-approuter` }
            }]
            await merge(__dirname, '/files/containerize.yaml.hbs').into('containerize.yaml', { with: project, additions })
        }

        const xsAppPath = join(approuterPath, 'xs-app.json')
        const additions = hasMTXRoute ? [{ ...approuterMTXRoute, at: 0 }] : []
        if (hasMTXRouteJava) additions.push({ ...approuterMTXRouteJava, at: 0 })
        await merge(__dirname, 'files/xs-app.json.hbs').into(xsAppPath, { project, additions })
    }
}