Node Node- 🔒 Deprecated

yaml
type: "io.kestra.core.tasks.scripts.Node"

Execute a Node.js script

This task is deprecated, please use the io.kestra.plugin.scripts.node.Script or io.kestra.plugin.scripts.node.Commands task instead.

With the Node task, you can execute a full javascript script. The task will create a temporary folder for each tasks and allows to install some npm packages defined in an optional package.json file.

By convention, you need to define at least a main.js files in inputFiles that will be the script used. You can also add as many javascript files as you need in inputFiles.

You can send outputs & metrics from your node script that can be used by others tasks. In order to help, we inject a node package directly on the working dir.Here is an example usage:

javascript
const Kestra = require("./kestra");
Kestra.outputs({test: 'value', int: 2, bool: true, float: 3.65});
Kestra.counter('count', 1, {tag1: 'i', tag2: 'win'});
Kestra.timer('timer1', (callback) => { setTimeout(callback, 1000) }, {tag1: 'i', tag2: 'lost'});
Kestra.timer('timer2', 2.12, {tag1: 'i', tag2: 'destroy'});

Examples

Execute a node script

yaml
id: "node"
type: "io.kestra.core.tasks.scripts.Node"
inputFiles:
  main.js: |
    const Kestra = require("./kestra");
    const fs = require('fs')
    const result = fs.readFileSync(process.argv[2], "utf-8")
    console.log(JSON.parse(result).status)
    const axios = require('axios')
    axios.get('http://google.fr').then(d => { console.log(d.status); Kestra.outputs({'status': d.status, 'text': d.data})})
    console.log(require('./mymodule').value)
  data.json: |
    {"status": "OK"}
  mymodule.js: |
    module.exports.value = 'hello world'
  package.json: |
    {
      "name": "tmp",
      "version": "1.0.0",
      "description": "",
      "main": "index.js",
      "dependencies": {
          "axios": "^0.20.0"
      },
      "devDependencies": {},
      "scripts": {
          "test": "echo `Error: no test specified` && exit 1"
      },
      "author": "",
      "license": "ISC"
    }
args:
  - data.json

Execute a node script with an input file from Kestra's local storage created by a previous task.

yaml
id: "node"
type: "io.kestra.core.tasks.scripts.Node"
inputFiles:
  data.csv: {{outputs.previousTaskId.uri}}
  main.js: |
    const fs = require('fs')
    const result = fs.readFileSync('data.csv', 'utf-8')
    console.log(result)

Properties

exitOnFailed

  • Type: boolean
  • Dynamic: ❌
  • Required: ✔️
  • Default: true

Exit if any non true return value

This tells bash that it should exit the script if any statement returns a non-true return value. The benefit of using -e is that it prevents errors snowballing into serious issues when they could have been caught earlier.

interpreter

  • Type: string
  • Dynamic: ❌
  • Required: ✔️
  • Default: /bin/sh
  • Min length: 1

Interpreter to used

runner

  • Type: string
  • Dynamic: ❌
  • Required: ✔️
  • Default: PROCESS
  • Possible Values:
    • PROCESS
    • DOCKER

Runner to use

warningOnStdErr

  • Type: boolean
  • Dynamic: ❌
  • Required: ✔️
  • Default: true

Use WARNING state if any stdErr is sent

args

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

node command args

Arguments list to pass to main javascript script

dockerOptions

Docker options when using runner DOCKER

env

  • Type: object
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

Additional environments variable to add for current process.

files

🔒 Deprecated

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

The list of files that will be uploaded to internal storage,

use outputFiles property instead

inputFiles

  • Type: object
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

Input files are extra files that will be available in the script working directory.

You can define the files as map or a JSON string.Each file can be defined inlined or can reference a file from Kestra's internal storage.

interpreterArgs

  • Type: array
  • SubType: string
  • Dynamic: ❌
  • Required: ❌
  • Default: [-c]

Interpreter args used

nodePath

  • Type: string
  • Dynamic: ❌
  • Required: ❌
  • Default: node

The node interpreter to use

Set the node interpreter path to use

npmPath

  • Type: string
  • Dynamic: ❌
  • Required: ❌
  • Default: npm

The npm binary to use

Set the npm binary path for node dependencies setup

outputDirs

  • Type: array
  • SubType: string
  • Dynamic: ❌
  • Required: ❌

Output dirs list that will be uploaded to internal storage

List of key that will generate temporary directories. On the command, just can use with special variable named outputDirs.key. If you add a files with ["myDir"], you can use the special vars echo 1 >> {[ outputDirs.myDir }}/file1.txt and echo 2 >> {[ outputDirs.myDir }}/file2.txt and both files will be uploaded to internal storage. Then you can used them on others tasks using null

outputFiles

  • Type: array
  • SubType: string
  • Dynamic: ❌
  • Required: ❌

Output file list that will be uploaded to internal storage

List of key that will generate temporary files. On the command, just can use with special variable named outputFiles.key. If you add a files with ["first"], you can use the special vars echo 1 >> {[ outputFiles.first }} and you used on others tasks using null

outputsFiles

🔒 Deprecated

  • Type: array
  • SubType: string
  • Dynamic: ❌
  • Required: ❌

Deprecated Output file

use outputFiles

Outputs

exitCode

  • Type: integer
  • Default: 0

The exit code of the whole execution

files

🔒 Deprecated

  • Type: object
  • SubType: string

Deprecated output files

use outputFiles

outputFiles

  • Type: object
  • SubType: string

The output files uri in Kestra internal storage

stdErrLineCount

  • Type: integer
  • Default: 0

The standard error line count

stdOutLineCount

  • Type: integer
  • Default: 0

The standard output line count

vars

  • Type: object

The value extract from output of the commands

Definitions

DeviceRequest

capabilities

  • Type: array
  • SubType: array
  • Dynamic: ❌
  • Required: ❌

A list of capabilities; an OR list of AND lists of capabilities.

count

  • Type: integer
  • Dynamic: ❌
  • Required: ❌

A request for devices to be sent to device drivers

deviceIds

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

A request for devices to be sent to device drivers

driver

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

A request for devices to be sent to device drivers

options

  • Type: object
  • SubType: string
  • Dynamic: ❌
  • Required: ❌

Driver-specific options, specified as key/value pairs.

These options are passed directly to the driver.

Credentials

auth

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The registry auth.

The auth field is a base64-encoded authentication string of username:password or a token.

password

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The registry password.

registry

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The registry url.

if not defined, the registry will be extracted from the image name.

username

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The registry username.

Memory

kernelMemory

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The maximum amount of kernel memory the container can use.

The minimum allowed value is 4m. Because kernel memory cannot be swapped out, a container which is starved of kernel memory may block host machine resources, which can have side effects on the host machine and on other containers. See --kernel-memory details.

memory

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The maximum amount of memory resources the container can use.

That is, you must set the value to at least 6 megabytes.

memoryReservation

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

Allows you to specify a soft limit smaller than --memory which is activated when Docker detects contention or low memory on the host machine.

If you use memoryReservation, it must be set lower than memory for it to take precedence. Because it is a soft limit, it does not guarantee that the container doesn’t exceed the limit.

memorySwap

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The amount of memory this container is allowed to swap to disk

If memory and memorySwap are set to the same value, this prevents containers from using any swap. This is because memorySwap is the amount of combined memory and swap that can be used, while memory is only the amount of physical memory that can be used.

memorySwappiness

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The amount of memory this container is allowed to swap to disk

By default, the host kernel can swap out a percentage of anonymous pages used by a container. You can set memorySwappiness to a value between 0 and 100, to tune this percentage.

oomKillDisable

  • Type: boolean
  • Dynamic: ❌
  • Required: ❌

By default, if an out-of-memory (OOM) error occurs, the kernel kills processes in a container.

To change this behavior, use the oomKillDisable option. Only disable the OOM killer on containers where you have also set the memory option. If the memory flag is not set, the host can run out of memory, and the kernel may need to kill the host system’s processes to free the memory.

DockerOptions

image

  • Type: string
  • Dynamic: ✔️
  • Required: ✔️
  • Min length: 1

Docker image to use

config

  • Type: object
  • Dynamic: ✔️
  • Required: ❌

Docker config file

Docker configuration file that can set access credentials to private container registries. Usually located in ~/.docker/config.json

cpu

  • Type: Cpu
  • Dynamic: ❌
  • Required: ❌

Limits the CPU usage to a given maximum threshold value.

By default, each container’s access to the host machine’s CPU cycles is unlimited. You can set various constraints to limit a given container’s access to the host machine’s CPU cycles.

credentials

Credentials for a private container registry.

deviceRequests

A list of device requests to be sent to device drivers

entryPoint

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

Docker entrypoint to use

extraHosts

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

Extra hostname mappings to the container network interface configuration

host

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

Docker api uri

memory

  • Type: Memory
  • Dynamic: ❌
  • Required: ❌

Limits memory usage to a given maximum threshold value.

Docker can enforce hard memory limits, which allow the container to use no more than a given amount of user or system memory, or soft limits, which allow the container to use as much memory as it needs unless certain conditions are met, such as when the kernel detects low memory or contention on the host machine. Some of these options have different effects when used alone or when more than one option is set.

networkMode

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

Docker network mode to use e.g. host, none, etc.

pullPolicy

  • Type: object
  • Dynamic: ❓
  • Required: ❌

user

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

User within the container

volumes

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ❌

List of volumes to mount

Must be a valid mount expression as string, example : /home/user:/app

Volumes mount are disabled by default for security reasons; you must enable them on server configuration by setting kestra.tasks.scripts.docker.volume-enabled to true

Cpu

cpus

  • Type: integer
  • Dynamic: ❌
  • Required: ❌

The maximum amount of CPU resources a container can use.

For instance, if the host machine has two CPUs and you set cpus:"1.5", the container is guaranteed at most one and a half of the CPUs