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kubernetes.js
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const got = require('got')
const FormData = require('form-data')
const k8s = require('@kubernetes/client-node')
const _ = require('lodash')
const awsEFS = require('./lib/aws-efs.js')
const {
deploymentTemplate,
serviceTemplate,
ingressTemplate,
customIngressTemplate,
persistentVolumeClaimTemplate
} = require('./templates.js')
/**
* Kubernates Container driver
*
* Handles the creation and deletation of containers to back Projects
*
* This driver creates Projects backed by Kubernates
*
* @module kubernates
* @memberof forge.containers.drivers
*
*/
const createDeployment = async (project, options) => {
const stack = project.ProjectStack.properties
const localDeployment = JSON.parse(JSON.stringify(deploymentTemplate))
const localPod = localDeployment.spec.template
localDeployment.metadata.name = project.safeName
localDeployment.metadata.labels.name = project.safeName
localDeployment.metadata.labels.app = project.id
localDeployment.spec.selector.matchLabels.app = project.id
// Examples:
// 1. With this affinity definitions we can skip toarations
// affinity:
// nodeAffinity:
// requiredDuringSchedulingIgnoredDuringExecution:
// nodeSelectorTerms:
// - matchExpressions:
// - key: node-owner
// operator: In
// values:
// - streaming-services-transcribe
// 2. With this affinity
// preferredDuringSchedulingIgnoredDuringExecution:
// - weight: 100
// preference:
// matchExpressions:
// - key: purpose
// operator: In
// values:
// - skills
// ---> we need these tolerations
// tolerations:
// - key: purpose
// operator: Equal
// value: skills
// effect: NoSchedule
if (process.env.DEPLOYMENT_TOLERATIONS !== undefined) {
// TOLERATIONS
try {
localPod.spec.tolerations = JSON.parse(process.env.DEPLOYMENT_TOLERATIONS)
this._app.log.info(`DEPLOYMENT TOLERATIONS loaded: ${localPod.spec.tolerations}`)
} catch (err) {
this._app.log.error(`TOLERATIONS load error: ${err}`)
}
}
localPod.metadata.labels.app = project.id
localPod.metadata.labels.name = project.safeName
localPod.spec.serviceAccount = process.env.EDITOR_SERVICE_ACCOUNT
if (stack.container) {
localPod.spec.containers[0].image = stack.container
} else {
localPod.spec.containers[0].image = `${this._options.registry}flowforge/node-red`
}
const baseURL = new URL(this._app.config.base_url)
let projectURL
if (!project.url.startsWith('http')) {
projectURL = `${baseURL.protocol}//${project.safeName}.${this._options.domain}`
} else {
const temp = new URL(project.url)
projectURL = `${temp.protocol}//${temp.hostname}${temp.port ? ':' + temp.port : ''}`
}
const teamID = this._app.db.models.Team.encodeHashid(project.TeamId)
const authTokens = await project.refreshAuthTokens()
localPod.spec.containers[0].env.push({ name: 'FORGE_CLIENT_ID', value: authTokens.clientID })
localPod.spec.containers[0].env.push({ name: 'FORGE_CLIENT_SECRET', value: authTokens.clientSecret })
localPod.spec.containers[0].env.push({ name: 'FORGE_URL', value: this._app.config.api_url })
localPod.spec.containers[0].env.push({ name: 'BASE_URL', value: projectURL })
localPod.spec.containers[0].env.push({ name: 'FORGE_TEAM_ID', value: teamID })
localPod.spec.containers[0].env.push({ name: 'FORGE_PROJECT_ID', value: project.id })
localPod.spec.containers[0].env.push({ name: 'FORGE_PROJECT_TOKEN', value: authTokens.token })
// Inbound connections for k8s disabled by default
localPod.spec.containers[0].env.push({ name: 'FORGE_NR_NO_TCP_IN', value: 'true' }) // MVP. Future iteration could present this to YML or UI
localPod.spec.containers[0].env.push({ name: 'FORGE_NR_NO_UDP_IN', value: 'true' }) // MVP. Future iteration could present this to YML or UI
if (authTokens.broker) {
localPod.spec.containers[0].env.push({ name: 'FORGE_BROKER_URL', value: authTokens.broker.url })
localPod.spec.containers[0].env.push({ name: 'FORGE_BROKER_USERNAME', value: authTokens.broker.username })
localPod.spec.containers[0].env.push({ name: 'FORGE_BROKER_PASSWORD', value: authTokens.broker.password })
}
if (this._app.license.active()) {
localPod.spec.containers[0].env.push({ name: 'FORGE_LICENSE_TYPE', value: 'ee' })
}
if (stack.memory) {
localPod.spec.containers[0].env.push({ name: 'FORGE_MEMORY_LIMIT', value: `${stack.memory}` })
}
if (stack.cpu) {
localPod.spec.containers[0].env.push({ name: 'FORGE_CPU_LIMIT', value: `${stack.cpu}` })
}
const credentialSecret = await project.getSetting('credentialSecret')
if (credentialSecret) {
localPod.spec.containers[0].env.push({ name: 'FORGE_NR_SECRET', value: credentialSecret })
}
if (this._logPassthrough) {
localPod.spec.containers[0].env.push({ name: 'FORGE_LOG_PASSTHROUGH', value: 'true' })
}
if (this._app.config.driver.options.projectSelector) {
localPod.spec.nodeSelector = this._app.config.driver.options.projectSelector
}
if (this._app.config.driver.options.registrySecrets) {
localPod.spec.imagePullSecrets = []
this._app.config.driver.options.registrySecrets.forEach(sec => {
const entry = {
name: sec
}
localPod.spec.imagePullSecrets.push(entry)
})
}
if (this._app.config.driver.options?.privateCA) {
localPod.spec.containers[0].volumeMounts = [
{
name: 'cacert',
mountPath: '/usr/local/ssl-certs',
readOnly: true
}
]
localPod.spec.volumes = [
{
name: 'cacert',
configMap: {
name: this._app.config.driver.options.privateCA
}
}
]
localPod.spec.containers[0].env.push({ name: 'NODE_EXTRA_CA_CERTS', value: '/usr/local/ssl-certs/chain.pem' })
}
if (this._app.config.driver.options?.storage?.enabled) {
const volMount = {
name: 'persistence',
mountPath: '/data/storage'
}
const vol = {
name: 'persistence',
persistentVolumeClaim: {
claimName: `${project.id}-pvc`
}
}
if (Array.isArray(localPod.spec.containers[0].volumeMounts)) {
localPod.spec.containers[0].volumeMounts.push(volMount)
} else {
localPod.spec.containers[0].volumeMounts = [volMount]
}
if (Array.isArray(localPod.spec.volumes)) {
localPod.spec.volumes.push(vol)
} else {
localPod.spec.volumes = [vol]
}
}
if (this._app.config.driver.options?.podSecurityContext) {
localPod.spec.securityContext = this._app.config.driver.options.podSecurityContext
} else if (this._app.license.active() && this._cloudProvider === 'openshift') {
localPod.spec.securityContext = {}
}
if (stack.memory && stack.cpu) {
localPod.spec.containers[0].resources.requests.memory = `${stack.memory}Mi`
// increase limit to give npm more room to run in
localPod.spec.containers[0].resources.limits.memory = `${parseInt(stack.memory) + 128}Mi`
localPod.spec.containers[0].resources.requests.cpu = `${stack.cpu * 10}m`
localPod.spec.containers[0].resources.limits.cpu = `${stack.cpu * 10}m`
}
const ha = await project.getSetting('ha')
if (ha?.replicas > 1) {
localDeployment.spec.replicas = ha.replicas
}
project.url = projectURL
await project.save()
return localDeployment
}
const createService = async (project, options) => {
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
const localService = JSON.parse(JSON.stringify(serviceTemplate))
localService.metadata.name = `${prefix}${project.safeName}`
localService.spec.selector.name = project.safeName
return localService
}
const mustache = (string, data = {}) =>
Object.entries(data).reduce((res, [key, value]) => res.replace(new RegExp(`{{\\s*${key}\\s*}}`, 'g'), value), string)
const createIngress = async (project, options) => {
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
const url = new URL(project.url)
// exposedData available for annotation replacements
const exposedData = {
serviceName: `${prefix}${project.safeName}`,
instanceURL: url.href,
instanceHost: url.host,
instanceProtocol: url.protocol
}
this._app.log.info('K8S DRIVER: start parse ingress template')
const localIngress = JSON.parse(JSON.stringify(ingressTemplate))
if (this._certManagerIssuer) {
localIngress.metadata.annotations['cert-manager.io/cluster-issuer'] = this._certManagerIssuer
localIngress.spec.tls = [
{
hosts: [
url.host
],
secretName: project.safeName
}
]
}
// process annotations with potential replacements
Object.keys(localIngress.metadata.annotations).forEach((key) => {
localIngress.metadata.annotations[key] = mustache(localIngress.metadata.annotations[key], exposedData)
})
localIngress.metadata.name = project.safeName
localIngress.spec.rules[0].host = url.host
localIngress.spec.rules[0].http.paths[0].backend.service.name = `${prefix}${project.safeName}`
return localIngress
}
const createCustomIngress = async (project, hostname, options) => {
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
const url = new URL(project.url)
url.host = hostname
// exposedData available for annotation replacements
const exposedData = {
serviceName: `${prefix}${project.safeName}`,
instanceURL: url.href,
instanceHost: url.host,
instanceProtocol: url.protocol
}
this._app.log.info('K8S DRIVER: start custom hostname ingress template')
const customIngress = JSON.parse(JSON.stringify(customIngressTemplate))
customIngress.metadata.name = `${project.safeName}-custom`
customIngress.spec.rules[0].host = hostname
customIngress.spec.rules[0].http.paths[0].backend.service.name = `${prefix}${project.safeName}`
if (this._customHostname?.certManagerIssuer) {
customIngress.metadata.annotations['cert-manager.io/cluster-issuer'] = this._customHostname.certManagerIssuer
customIngress.spec.tls = [
{
hosts: [
hostname
],
secretName: `${project.safeName}-custom`
}
]
}
// process annotations with potential replacements
Object.keys(customIngress.metadata.annotations).forEach((key) => {
customIngress.metadata.annotations[key] = mustache(customIngress.metadata.annotations[key], exposedData)
})
if (this._customHostname?.ingressClass) {
customIngress.spec.ingressClassName = `${this._customHostname.ingressClass}`
}
return customIngress
}
const createPersistentVolumeClaim = async (project, options) => {
const namespace = this._app.config.driver.options?.projectNamespace || 'flowforge'
const pvc = JSON.parse(JSON.stringify(persistentVolumeClaimTemplate))
const drvOptions = this._app.config.driver.options
if (drvOptions?.storage?.storageClass) {
pvc.spec.storageClassName = drvOptions.storage.storageClass
} else if (drvOptions?.storage?.storageClassEFSTag) {
pvc.spec.storageClassName = await awsEFS.lookupStorageClass(drvOptions?.storage?.storageClassEFSTag)
}
if (drvOptions?.storage?.size) {
pvc.spec.resources.requests.storage = drvOptions.storage.size
}
pvc.metadata.namespace = namespace
pvc.metadata.name = `${project.id}-pvc`
pvc.metadata.labels = {
'ff-project-id': project.id,
'ff-project-name': project.safeName
}
console.log(`PVC: ${JSON.stringify(pvc, null, 2)}`)
return pvc
}
const createProject = async (project, options) => {
const namespace = this._app.config.driver.options.projectNamespace || 'flowforge'
const localDeployment = await createDeployment(project, options)
const localService = await createService(project, options)
const localIngress = await createIngress(project, options)
if (this._app.config.driver.options?.storage?.enabled) {
const localPVC = await createPersistentVolumeClaim(project, options)
// console.log(JSON.stringify(localPVC, null, 2))
try {
await this._k8sApi.createNamespacedPersistentVolumeClaim(namespace, localPVC)
} catch (err) {
if (err.statusCode === 409) {
this._app.log.warn(`[k8s] PVC for instance ${project.id} already exists, proceeding...`)
} else {
if (project.state !== 'suspended') {
this._app.log.error(`[k8s] Instance ${project.id} - error creating PVC: ${err.toString()} ${err.statusCode}`)
// console.log(err)
throw err
}
}
}
}
try {
await this._k8sAppApi.createNamespacedDeployment(namespace, localDeployment)
} catch (err) {
if (err.statusCode === 409) {
// If deployment exists, perform an upgrade
this._app.log.warn(`[k8s] Deployment for instance ${project.id} already exists. Upgrading deployment`)
const result = await this._k8sAppApi.readNamespacedDeployment(project.safeName, namespace)
const existingDeployment = result.body
// Check if the metadata and spec are aligned. They won't be though (at minimal because we regenerate auth)
if (!_.isEqual(existingDeployment.metadata, localDeployment.metadata) || !_.isEqual(existingDeployment.spec, localDeployment.spec)) {
// If not aligned, replace the deployment
await this._k8sAppApi.replaceNamespacedDeployment(project.safeName, namespace, localDeployment)
}
} else {
// Log other errors and rethrow them for additional higher-level handling
this._app.log.error(`[k8s] Unexpected error creating deployment for instance ${project.id}.`)
this._app.log.error(`[k8s] deployment ${JSON.stringify(localDeployment, undefined, 2)}`)
this._app.log.error(err)
// rethrow the error so the wrapper knows this hasn't worked
throw err
}
}
await new Promise((resolve, reject) => {
let counter = 0
const pollInterval = setInterval(async () => {
try {
await this._k8sAppApi.readNamespacedDeployment(project.safeName, this._namespace)
clearInterval(pollInterval)
resolve()
} catch (err) {
// hmm
counter++
if (counter > this._k8sRetries) {
clearInterval(pollInterval)
this._app.log.error(`[k8s] Instance ${project.id} - timeout waiting for Deployment`)
reject(new Error('Timed out to creating Deployment'))
}
}
}, this._k8sDelay)
})
try {
await this._k8sApi.createNamespacedService(namespace, localService)
} catch (err) {
if (err.statusCode === 409) {
this._app.log.warn(`[k8s] Service for instance ${project.id} already exists, proceeding...`)
} else {
if (project.state !== 'suspended') {
this._app.log.error(`[k8s] Instance ${project.id} - error creating service: ${err.toString()}`)
throw err
}
}
}
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
await new Promise((resolve, reject) => {
let counter = 0
const pollInterval = setInterval(async () => {
try {
await this._k8sApi.readNamespacedService(prefix + project.safeName, this._namespace)
clearInterval(pollInterval)
resolve()
} catch (err) {
counter++
if (counter > this._k8sRetries) {
clearInterval(pollInterval)
this._app.log.error(`[k8s] Instance ${project.id} - timeout waiting for Service`)
reject(new Error('Timed out to creating Service'))
}
}
}, this._k8sDelay)
})
try {
await this._k8sNetApi.createNamespacedIngress(namespace, localIngress)
} catch (err) {
if (err.statusCode === 409) {
this._app.log.warn(`[k8s] Ingress for instance ${project.id} already exists, proceeding...`)
} else {
if (project.state !== 'suspended') {
this._app.log.error(`[k8s] Instance ${project.id} - error creating ingress: ${err.toString()}`)
throw err
}
}
}
if (this._customHostname?.enabled) {
const customHostname = await project.getSetting('customHostname')
if (customHostname) {
const customHostnameIngress = await createCustomIngress(project, customHostname, options)
try {
await this._k8sNetApi.createNamespacedIngress(namespace, customHostnameIngress)
} catch (err) {
if (err.statusCode === 409) {
this._app.log.warn(`[k8s] Custom Hostname Ingress for instance ${project.id} already exists, proceeding...`)
} else {
if (project.state !== 'suspended') {
this._app.log.error(`[k8s] Instance ${project.id} - error creating custom hostname ingress: ${err.toString()}`)
throw err
}
}
}
}
}
await new Promise((resolve, reject) => {
let counter = 0
const pollInterval = setInterval(async () => {
try {
await this._k8sNetApi.readNamespacedIngress(project.safeName, this._namespace)
clearInterval(pollInterval)
resolve()
} catch (err) {
counter++
if (counter > this._k8sRetries) {
clearInterval(pollInterval)
this._app.log.error(`[k8s] Instance ${project.id} - timeout waiting for Ingress`)
reject(new Error('Timed out to creating Ingress'))
}
}
}, this._k8sDelay)
})
await project.updateSetting('k8sType', 'deployment')
this._app.log.debug(`[k8s] Container ${project.id} started`)
project.state = 'running'
await project.save()
this._projects[project.id].state = 'starting'
}
const getEndpoints = async (project) => {
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
if (await project.getSetting('ha')) {
const endpoints = await this._k8sApi.readNamespacedEndpoints(`${prefix}${project.safeName}`, this._namespace)
const addresses = endpoints.body.subsets[0].addresses.map(a => { return a.ip })
const hosts = []
for (const address in addresses) {
hosts.push(addresses[address])
}
return hosts
} else {
return [`${prefix}${project.safeName}.${this._namespace}`]
}
}
const getStaticFileUrl = async (instance, filePath) => {
const prefix = instance.safeName.match(/^[0-9]/) ? 'srv-' : ''
return `http://${prefix}${instance.safeName}.${this._namespace}:2880/flowforge/files/_/${encodeURIComponent(filePath)}`
}
module.exports = {
/**
* Initialises this driver
* @param {string} app - the Vue application
* @param {object} options - A set of configuration options for the driver
* @return {forge.containers.ProjectArguments}
*/
init: async (app, options) => {
this._app = app
this._projects = {}
this._options = options
this._namespace = this._app.config.driver.options?.projectNamespace || 'flowforge'
this._k8sDelay = this._app.config.driver.options?.k8sDelay || 1000
this._k8sRetries = this._app.config.driver.options?.k8sRetries || 10
this._certManagerIssuer = this._app.config.driver.options?.certManagerIssuer
this._logPassthrough = this._app.config.driver.options?.logPassthrough || false
this._cloudProvider = this._app.config.driver.options?.cloudProvider
if (this._app.config.driver.options?.customHostname?.enabled) {
this._app.log.info('[k8s] Enabling Custom Hostname Support')
this._customHostname = this._app.config.driver.options?.customHostname
}
const kc = new k8s.KubeConfig()
options.registry = app.config.driver.options?.registry || '' // use docker hub registry
if (options.registry !== '' && !options.registry.endsWith('/')) {
options.registry += '/'
}
kc.loadFromDefault()
this._k8sApi = kc.makeApiClient(k8s.CoreV1Api)
this._k8sAppApi = kc.makeApiClient(k8s.AppsV1Api)
this._k8sNetApi = kc.makeApiClient(k8s.NetworkingV1Api)
// Get a list of all projects - with the absolute minimum of fields returned
const projects = await app.db.models.Project.findAll({
attributes: [
'id',
'name',
'state',
'ProjectStackId',
'TeamId'
]
})
projects.forEach(async (project) => {
if (this._projects[project.id] === undefined) {
this._projects[project.id] = {
state: 'unknown'
}
}
})
this._initialCheckTimeout = setTimeout(() => {
this._app.log.debug('[k8s] Restarting projects')
const namespace = this._namespace
projects.forEach(async (project) => {
try {
if (project.state === 'suspended') {
// Do not restart suspended projects
return
}
// need to upgrade bare pods to deployments
// try {
// this._app.log.info(`[k8s] Testing ${project.id} in ${namespace} is bare pod`)
// await this._k8sApi.readNamespacedPodStatus(project.safeName, namespace)
// // should only get here is a bare pod exists
// this._app.log.info(`[k8s] upgrading ${project.id} to deployment`)
// const fullProject = await this._app.db.models.Project.byId(project.id)
// const localDeployment = await createDeployment(fullProject, options)
// this._k8sAppApi.createNamespacedDeployment(namespace, localDeployment)
// .then(() => {
// return this._k8sApi.deleteNamespacedPod(project.safeName, namespace)
// })
// .catch(err => {
// this._app.log.error(`[k8s] failed to upgrade ${project.id} to deployment`)
// })
// // it's just been created, not need to check if it still exists in the next block
// return
// } catch (err) {
// // bare pod not found can move on
// this._app.log.info(`[k8s] ${project.id} in ${namespace} is not bare pod`)
// }
// look for missing projects
const currentType = await project.getSetting('k8sType')
if (currentType === 'deployment') {
try {
this._app.log.info(`[k8s] Testing ${project.id} in ${namespace} deployment exists`)
await this._k8sAppApi.readNamespacedDeployment(project.safeName, namespace)
this._app.log.info(`[k8s] deployment ${project.id} in ${namespace} found`)
} catch (err) {
this._app.log.error(`[k8s] Error while reading namespaced deployment for project '${project.safeName}' ${project.id}. Error msg=${err.message}, stack=${err.stack}`)
this._app.log.info(`[k8s] Instance ${project.id} - recreating deployment`)
const fullProject = await this._app.db.models.Project.byId(project.id)
await createProject(fullProject, options)
}
} else {
try {
// pod already running
this._app.log.info(`[k8s] Testing ${project.id} in ${namespace} pod exists`)
await this._k8sApi.readNamespacedPodStatus(project.safeName, namespace)
this._app.log.info(`[k8s] pod ${project.id} in ${namespace} found`)
} catch (err) {
this._app.log.debug(`[k8s] Instance ${project.id} - recreating deployment`)
const fullProject = await this._app.db.models.Project.byId(project.id)
await createProject(fullProject, options)
}
}
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error resuming project: ${err.stack}`)
}
})
}, 1000)
// need to work out what we can expose for K8s
return {
stack: {
properties: {
cpu: {
label: 'CPU Cores (in 1/100th units)',
validate: '^([1-9][0-9]{0,2}|1000)$',
invalidMessage: 'Invalid value - must be a number between 1 and 1000, where 100 represents 1 CPU core',
description: 'Defines the CPU resources each Project should receive, in units of 1/100th of a CPU core. 100 equates to 1 CPU core'
},
memory: {
label: 'Memory (MB)',
validate: '^[1-9]\\d*$',
invalidMessage: 'Invalid value - must be a number',
description: 'How much memory the container for each Project will be granted, recommended value 256'
},
container: {
label: 'Container Location',
// taken from https://stackoverflow.com/a/62964157
validate: '^(([a-z0-9]|[a-z0-9][a-z0-9\\-]*[a-z0-9])\\.)*([a-z0-9]|[a-z0-9][a-z0-9\\-]*[a-z0-9])(:[0-9]+\\/)?(?:[0-9a-z-]+[/@])(?:([0-9a-z-]+))[/@]?(?:([0-9a-z-]+))?(?::[a-z0-9\\.-]+)?$',
invalidMessage: 'Invalid value - must be a Docker image',
description: 'Container image location, can include a tag'
}
}
}
}
},
/**
* Start a Project
* @param {Project} project - the project model instance
* @return {forge.containers.Project}
*/
start: async (project) => {
this._projects[project.id] = {
state: 'starting'
}
// Rather than await this promise, we return it. That allows the wrapper
// to respond to the create request much quicker and the create can happen
// asynchronously.
// If the create fails, the Project still exists but will be put in suspended
// state (and taken out of billing if enabled).
// Remember, this call is used for both creating a new project as well as
// restarting an existing project
// return createPod(project)
return createProject(project, this._options)
},
/**
* Stop a Project
* @param {Project} project - the project model instance
*/
stop: async (project) => {
// Stop the project
this._projects[project.id].state = 'stopping'
try {
await this._k8sNetApi.deleteNamespacedIngress(project.safeName, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting ingress: ${err.toString()}`)
}
if (this._certManagerIssuer) {
try {
await this._k8sApi.deleteNamespacedSecret(project.safeName, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting tls secret: ${err.toString()}`)
}
}
if (this._customHostname?.enabled) {
try {
await this._k8sNetApi.deleteNamespacedIngress(`${project.safeName}-custom`, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting custom ingress: ${err.toString()}`)
}
if (this._customHostname?.certManagerIssuer) {
try {
await this._k8sApi.deleteNamespacedSecret(`${project.safeName}-custom`, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting custom tls secret: ${err.toString()}`)
}
}
}
// Note that, regardless, the main objective is to delete deployment (runnable)
// Even if some k8s resources like ingress or service are still not deleted (maybe because of
// k8s service latency), the most important thing is to get to deployment.
try {
await new Promise((resolve, reject) => {
let counter = 0
const pollInterval = setInterval(async () => {
try {
await this._k8sNetApi.readNamespacedIngress(project.safeName, this._namespace)
} catch (err) {
clearInterval(pollInterval)
resolve()
}
counter++
if (counter > this._k8sRetries) {
clearInterval(pollInterval)
this._app.log.error(`[k8s] Instance ${project.id} - timed out deleting ingress`)
reject(new Error('Timed out to deleting Ingress'))
}
}, this._k8sDelay)
})
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - Ingress was not deleted: ${err.toString()}`)
}
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
try {
await this._k8sApi.deleteNamespacedService(prefix + project.safeName, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting service: ${err.toString()}`)
}
try {
await new Promise((resolve, reject) => {
let counter = 0
const pollInterval = setInterval(async () => {
try {
await this._k8sApi.readNamespacedService(prefix + project.safeName, this._namespace)
} catch (err) {
clearInterval(pollInterval)
resolve()
}
counter++
if (counter > this._k8sRetries) {
clearInterval(pollInterval)
this._app.log.error(`[k8s] Instance ${project.id} - timed deleting service`)
reject(new Error('Timed out to deleting Service'))
}
}, this._k8sDelay)
})
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - Service was not deleted: ${err.toString()}`)
}
const currentType = await project.getSetting('k8sType')
let pod = true
if (currentType === 'deployment') {
await this._k8sAppApi.deleteNamespacedDeployment(project.safeName, this._namespace)
pod = false
} else {
await this._k8sApi.deleteNamespacedPod(project.safeName, this._namespace)
}
// We should not delete the PVC when the instance is suspended
// if (this._app.config.driver.options?.storage?.enabled) {
// try {
// await this._k8sApi.deleteNamespacedPersistentVolumeClaim(`${project.safeName}-pvc`, this._namespace)
// } catch (err) {
// this._app.log.error(`[k8s] Instance ${project.id} - error deleting PVC: ${err.toString()} ${err.statusCode}`)
// }
// }
this._projects[project.id].state = 'suspended'
return new Promise((resolve, reject) => {
let counter = 0
const pollInterval = setInterval(async () => {
try {
if (pod) {
await this._k8sApi.readNamespacedPodStatus(project.safeName, this._namespace)
} else {
await this._k8sAppApi.readNamespacedDeployment(project.safeName, this._namespace)
}
counter++
if (counter > this._k8sRetries) {
clearInterval(pollInterval)
this._app.log.error(`[k8s] Instance ${project.id} - timed deleting ${pod ? 'Pod' : 'Deployment'}`)
reject(new Error('Timed out to deleting Deployment'))
}
} catch (err) {
clearInterval(pollInterval)
resolve()
}
}, this._k8sDelay)
})
},
/**
* Removes a Project
* @param {Project} project - the project model instance
* @return {Object}
*/
remove: async (project) => {
try {
await this._k8sNetApi.deleteNamespacedIngress(project.safeName, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting ingress: ${err.toString()}`)
}
if (this._certManagerIssuer) {
try {
await this._k8sApi.deleteNamespacedSecret(project.safeName, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting tls secret: ${err.toString()}`)
}
}
if (this._customHostname?.enabled) {
try {
await this._k8sNetApi.deleteNamespacedIngress(`${project.safeName}-custom`, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting custom ingress: ${err.toString()}`)
}
if (this._customHostname?.certManagerIssuer) {
try {
await this._k8sApi.deleteNamespacedSecret(`${project.safeName}-custom`, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting custom tls secret: ${err.toString()}`)
}
}
}
try {
if (project.safeName.match(/^[0-9]/)) {
await this._k8sApi.deleteNamespacedService('srv-' + project.safeName, this._namespace)
} else {
await this._k8sApi.deleteNamespacedService(project.safeName, this._namespace)
}
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting service: ${err.toString()}`)
}
const currentType = await project.getSetting('k8sType')
try {
// A suspended project won't have a pod to delete - but try anyway
// just in case state has got out of sync
if (currentType === 'deployment') {
await this._k8sAppApi.deleteNamespacedDeployment(project.safeName, this._namespace)
} else {
await this._k8sApi.deleteNamespacedPod(project.safeName, this._namespace)
}
} catch (err) {
if (project.state !== 'suspended') {
if (currentType === 'deployment') {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting deployment: ${err.toString()}`)
} else {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting pod: ${err.toString()}`)
}
}
}
if (this._app.config.driver.options?.storage?.enabled) {
try {
await this._k8sApi.deleteNamespacedPersistentVolumeClaim(`${project.id}-pvc`, this._namespace)
} catch (err) {
this._app.log.error(`[k8s] Instance ${project.id} - error deleting PVC: ${err.toString()} ${err.statusCode}`)
// console.log(err)
}
}
delete this._projects[project.id]
},
/**
* Retrieves details of a project's container
* @param {Project} project - the project model instance
* @return {Object}
*/
details: async (project) => {
if (this._projects[project.id] === undefined) {
return { state: 'unknown' }
}
if (this._projects[project.id].state === 'suspended') {
// We should only poll the launcher if we think it is running.
// Otherwise, return our cached state
return {
state: this._projects[project.id].state
}
}
const prefix = project.safeName.match(/^[0-9]/) ? 'srv-' : ''
// this._app.log.debug('checking actual pod, not cache')
/** @type { { response: IncomingMessage, body: k8s.V1Deployment } } */
let details
const currentType = await project.getSetting('k8sType')
try {
if (currentType === 'deployment') {
details = await this._k8sAppApi.readNamespacedDeployment(project.safeName, this._namespace)
if (details.body.status?.conditions[0].status === 'False') {
// return "starting" status until pod it running
this._projects[project.id].state = 'starting'
return {
id: project.id,
state: 'starting',
meta: {}
}
} else if (details.body.status?.conditions[0].status === 'True' &&
(details.body.status?.conditions[0].type === 'Available' ||
(details.body.status?.conditions[0].type === 'Progressing' && details.body.status?.conditions[0].reason === 'NewReplicaSetAvailable')
)) {
// not calling all endpoints for HA as they should be the same
const infoURL = `http://${prefix}${project.safeName}.${this._namespace}:2880/flowforge/info`
try {
const info = JSON.parse((await got.get(infoURL)).body)
this._projects[project.id].state = info.state
return info
} catch (err) {
this._app.log.debug(`error getting state from instance ${project.id}: ${err}`)
return {
id: project.id,
state: 'starting',
meta: {}
}
}
} else {
return {
id: project.id,
state: 'starting',
error: `Unexpected pod status '${details.body.status?.conditions[0]?.status}', type '${details.body.status?.conditions[0]?.type}'`,
meta: {}
}
}
} else {
details = await this._k8sApi.readNamespacedPodStatus(project.safeName, this._namespace)
if (details.body.status?.phase === 'Pending') {
// return "starting" status until pod it running
this._projects[project.id].state = 'starting'
return {
id: project.id,
state: 'starting',
meta: {}
}
} else if (details.body.status?.phase === 'Running') {
// not calling all endpoints for HA as they should be the same
const infoURL = `http://${prefix}${project.safeName}.${this._namespace}:2880/flowforge/info`
try {
const info = JSON.parse((await got.get(infoURL)).body)
this._projects[project.id].state = info.state
return info
} catch (err) {
this._app.log.debug(`error getting state from instance ${project.id}: ${err}`)
return {
id: project.id,
state: 'starting',
meta: {}
}
}
} else {
return {
id: project.id,
state: 'starting',
error: `Unexpected pod status '${details.body.status?.phase}'`,
meta: {}
}
}
}
} catch (err) {
this._app.log.debug(`error getting pod status for instance ${project.id}: ${err}`)
return {
id: project?.id,
error: err,
state: 'starting',
meta: details?.body?.status
}
}
},
/**
* Returns the settings for the project
* @param {Project} project - the project model instance
*/
settings: async (project) => {
const settings = {}
settings.projectID = project.id
settings.port = 1880
settings.rootDir = '/'
settings.userDir = 'data'
return settings
},
/**
* Starts the flows
* @param {Project} project - the project model instance