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main.js
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main.js
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const { pipeline } = require('stream')
const { FormData } = require('@jsreport/multipart')
const serializator = require('@jsreport/serializator')
const _sendToWorker = require('./sendToWorker')
const createDockerManager = require('./dockerManager')
const express = require('express')
const fs = require('fs/promises')
module.exports = (reporter, definition) => {
if (!definition.options.container.sharedTempRewriteRootPathTo) {
definition.options.container.sharedTempRewriteRootPathTo = definition.options.container.sharedTempHostBindMountRootPath
}
if (definition.options.container.sharedTempHostBindMountRootPath.endsWith('/')) {
definition.options.container.sharedTempHostBindMountRootPath = definition.options.container.sharedTempHostBindMountRootPath.slice(0, -1)
}
if (definition.options.container.sharedTempRewriteRootPathTo.endsWith('/')) {
definition.options.container.sharedTempRewriteRootPathTo = definition.options.container.sharedTempRewriteRootPathTo.slice(0, -1)
}
reporter.documentStore.registerEntityType('ServerType', {
ip: { type: 'Edm.String', key: true },
stack: { type: 'Edm.String' },
ping: { type: 'Edm.DateTimeOffset' }
})
reporter.documentStore.registerEntitySet('servers', {
entityType: 'jsreport.ServerType',
humanReadableKey: 'ip',
internal: true
})
reporter.documentStore.registerEntityType('TenantWorkers', {
_id: { type: 'Edm.String', key: true },
ip: { type: 'Edm.String' },
port: { type: 'Edm.Int32' },
stack: { type: 'Edm.String' },
tenant: { type: 'Edm.String' },
updateAt: { type: 'Edm.DateTimeOffset' }
})
reporter.documentStore.registerEntitySet('tenantWorkers', {
entityType: 'jsreport.TenantWorkers',
humanReadableKey: '_id',
internal: true
})
reporter.on('after-authentication-express-routes', () => {
reporter.express.app.post('/api/worker-docker-manager', async (req, res, next) => {
try {
const reqBody = typeof req.body === 'string' ? serializator.parse(req.body) : req.body
const result = await reporter.dockerManager.executeWorker(reqBody)
await reporter.dockerManager.handleRemoteHttpResponse(reqBody, result, res)
} catch (e) {
next(e)
}
})
})
reporter.on('after-express-static-configure', () => {
if (!reporter.authentication) {
return reporter.express.app.post('/api/worker-docker-manager', express.text(), async (req, res, next) => {
try {
const reqBody = serializator.parse(req.body)
const result = await reporter.dockerManager.executeWorker(reqBody)
await reporter.dockerManager.handleRemoteHttpResponse(reqBody, result, res)
} catch (e) {
next(e)
}
})
}
})
reporter.initializeListeners.add('docker-workers', async () => {
for (let i = 0; i < definition.options.numberOfWorkers; i++) {
await fs.mkdir(`${definition.options.container.sharedTempHostBindMountRootPath}/${definition.options.container.namePrefix}${i + 1}/autocleanup`, { recursive: true })
reporter.addPathToWatchForAutoCleanup(`${definition.options.container.sharedTempHostBindMountRootPath}/${definition.options.container.namePrefix}${i + 1}/autocleanup`)
}
})
const workerRequestMap = new Map()
reporter.registerWorkersManagerFactory((options, systemOptions) => {
reporter.dockerManager = createDockerManager(reporter, definition.options, options, systemOptions)
reporter.dockerManager.getWorkerHttpOptions = function ({ remote }) {
if (remote && reporter.authentication) {
const authOptions = reporter.options.extensions.authentication
return {
auth: {
username: authOptions.admin.username,
password: authOptions.admin.password
}
}
}
}
reporter.dockerManager.handleRemoteHttpResponse = async function handleRemoteHttpResponse (reqBody, workerResult, res) {
if (reqBody.actionName === 'render') {
// sending local response serialized as multipart to the original remote server
// the response output can be buffer or stream, but we always send it as stream output
const renderR = reporter.Response(reqBody.req.context.id)
await renderR.parse(workerResult)
const form = new FormData()
const serializedMeta = serializator.serialize(workerResult.meta)
res.status(201).setHeader('Content-Type', form.getDefaultContentType())
pipeline(form, res, (err) => {
if (err) {
res.destroy()
}
})
form.append('meta', serializedMeta, { contentType: 'application/json' })
const responseSize = await renderR.output.getSize()
const responseFileStream = await renderR.output.getStream()
form.append('content', responseFileStream, { contentLength: responseSize })
form.end()
return
}
res.status(201).send(serializator.serialize(workerResult))
}
reporter.dockerManager.executeWorker = async function executeWorker (payload) {
const { systemAction } = payload
if (systemAction === 'allocate') {
const { req, timeout } = payload
const worker = await reporter.dockerManager.allocate({
context: req.context
}, {
timeout
})
workerRequestMap.set(req.context.rootId, worker)
return {}
}
if (systemAction === 'release') {
const { req } = payload
const worker = workerRequestMap.get(req.context.rootId)
try {
await worker.release()
} finally {
workerRequestMap.delete(req.context.rootId)
}
return {}
}
if (systemAction === 'execute') {
const { req, originUrl, timeout } = payload
const sendToWorker = _sendToWorker(reporter, { remote: true })
const worker = workerRequestMap.get(req.context.rootId)
const result = await worker.execute(payload, {
executeMain: async (data) => {
const result = await reporter._invokeMainAction(data, req)
if (data.actionName === 'profile') {
// send the profile data to the server which received the request.
// it will make sure to store the profile data and stream it to the studio
await sendToWorker(originUrl, {
req: {
context: {
rootId: req.context.rootId
}
},
data
}, {
systemAction: 'profile',
timeout
})
}
return result
},
timeout: timeout + definition.options.reportTimeoutMargin
})
return result
}
if (systemAction === 'profile') {
const { req, data } = payload
// we make sure that we don't duplicate the logs
// the logging is done in the remote server, here
// on the origin server we just care about the profile saving
data.data = {
events: data.data,
log: false
}
return reporter._invokeMainAction(data, req)
}
throw reporter.createError(`Unknown worker action ${systemAction}`)
}
reporter.closeListeners.add('docker-workers', reporter.dockerManager.close)
return reporter.dockerManager
})
}