node-docker-api

docker-api

Docker Remote API driver for node.js. It uses the same modem than dockerode, but the interface is promisified and with a different syntax.

Support for:

• streams
• stream demux
• entities
• run
• tests
• promises
• full es6 support

The current status of the package is in beta state. This module covers the full API reference, including experimental stuff such as plugins.

Check the reference and the tests for full examples.

Installation

npm install node-docker-api

Usage

Create, start, stop, restart and remove a container

const Docker = require('node-docker-api').Docker

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

docker.container.create({
  Image: 'ubuntu',
  name: 'test'
})
  .then((container) => container.start())
  .then((container) => container.stop())
  .then((container) => container.restart())
  .then((container) => container.delete({ force: true }))
  .catch((error) => console.log(error))

List, inspect and top containers

const Docker = require('node-docker-api').Docker

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

// List
docker.container.list()
   // Inspect
  .then((containers) => containers[0].status())
  .then((container) => container.top())
  .then((processes) => console.log(processes))
  .catch((error) => console.log(error))

List, inspect and stat containers

const Docker = require('node-docker-api').Docker

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

// List
docker.container.list()
   // Inspect
  .then((containers) => containers[0].status())
  .then((container) => container.stats())
  .then((stats) => {
    stats.on('data', (stat) => console.log('Stats: ',stat))
    stats.on('error', (err) => console.log('Error: ', err))
  })
  .catch((error) => console.log(error))

Get logs of a container

const Docker = require('node-docker-api').Docker

let docker = new Docker({ socketPath: '/var/run/docker.sock' })
let container

docker.container.create({
  Image: 'ubuntu',
  name: 'test'
})
  .then((container) => container.logs({
    follow: true,
    stdout: true,
    stderr: true
  }))
  .then((stream) => {
    stream.on('data', (info) => console.log(info))
    stream.on('error', (err) => console.log(err))
  })
  .catch((error) => console.log(error))

Export a container

const Docker = require('node-docker-api').Docker,
  fs = require('fs')

let docker = new Docker({ socketPath: '/var/run/docker.sock' })
let container

docker.container.create({
  Image: 'ubuntu',
  name: 'test'
})
  .then((container) => container.start())
  .then((container) => container.export())
  .then((content) => {
    let file = fs.createWriteStream("container.tar");
    file.end(content)
  })
  .catch((error) => console.log(error))

Manipulate file system in a container

const Docker = require('node-docker-api').Docker,
  fs = require('fs')

const promisifyStream = (stream) => new Promise((resolve, reject) => {
  stream.on('data', (d) => console.log(d.toString()))
  stream.on('end', resolve)
  stream.on('error', reject)
})

let docker = new Docker({ socketPath: '/var/run/docker.sock' })
let container

docker.container.create({
  Image: 'ubuntu',
  Cmd: [ '/bin/bash', '-c', 'tail -f /var/log/dmesg' ],
  name: 'test'
})
  .then((container) => container.start())
  .then((_container) => {
    container = _container
    return _container.fs.put('./file.tar', {
      path: 'root'
    })
  })
  .then((stream) => promisifyStream(stream))
  .then(() => container.fs.get({ path: '/var/log/dmesg' }))
  .then((stream) => {
    let file = fs.createWriteStream("file.jpg");
    stream.pipe(file)
    return promisifyStream(stream)
  })
  .then(() => container.status())
  .then((container) => container.stop())
  .catch((error) => console.log(error))

Execute commands and kill containers

const Docker = require('node-docker-api').Docker

const promisifyStream = (stream) => new Promise((resolve, reject) => {
  console.log(stream);
  stream.on('data', (d) => console.log(d.toString()))
  stream.on('end', resolve)
  stream.on('error', reject)
})

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

docker.container.create({
  Image: 'ubuntu',
  Cmd: [ '/bin/bash', '-c', 'tail -f /var/log/dmesg' ],
  name: 'test'
})
  .then((container) => container.start())
  .then((_container) => {
    container = _container
    return container.exec.create({
      Cmd: [ "top" ]
    })
  })
  .then((exec) => {
    return exec.start()
  })
  .then((stream) => {
    stream.on('data', (info) => {
      console.log(info.toString())
      _container.kill()
    })
    stream.on('error', (err) => console.log(err))
  })
  .catch((error) => console.log(error))

Build, inspect and remove an image

const Docker = require('node-docker-api').Docker,
  tar = require('tar-fs')

const promisifyStream = (stream) => new Promise((resolve, reject) => {
  stream.on('data', (d) => console.log(d.toString()))
  stream.on('end', resolve)
  stream.on('error', reject)
})

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

var tarStream = tar.pack('/path/to/Dockerfile')
docker.image.build(tarStream, {
  t: 'testimg'
})
  .then((stream) => promisifyStream(stream))
  .then(() => docker.image.status('testimg'))
  .then((image) => image.remove())
  .catch((error) => console.log(error))

Pull and check history of an image

const Docker = require('node-docker-api').Docker

const promisifyStream = (stream) => new Promise((resolve, reject) => {
  stream.on('data', (d) => console.log(d.toString()))
  stream.on('end', resolve)
  stream.on('error', reject)
})

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

return docker.image.create({}, { fromImage: 'ubuntu', tag: 'latest' })
  .then((stream) => promisifyStream(stream))
  .then(() => docker.image.status('ubuntu'))
  .then((image) => image.history())
  .then((events) => console.log(events))
  .catch((error) => console.log(error))

Fetch events from docker

const Docker = require('node-docker-api').Docker,
  fs = require('fs')

const promisifyStream = (stream) => new Promise((resolve, reject) => {
  stream.on('data', (d) => console.log(data))
  stream.on('end', resolve)
  stream.on('error', reject)
})

let docker = new Docker({ socketPath: '/var/run/docker.sock' })

docker.events({
  since: ((new Date().getTime() / 1000) - 60).toFixed(0)
})
  .then((container) => container.events())
  .then((stream) => promisifyStream(stream))
  .catch((error) => console.log(error))