Merge pull request #166 from renderforest/render-status

render-status

Author: narekhovhannisyan

README.md

@@ -3,12 +3,11 @@ Renderforest SDK for Node.js.
 
 [![Build Status](https://travis-ci.org/renderforest/renderforest-sdk-node.svg?branch=master)](https://travis-ci.org/renderforest/renderforest-sdk-node)
 
-
 ### [API Reference](https://developers.renderforest.com) 
 
 # Introduction
 
-Welcome to the Renderforest API! 
+Welcome to the Renderforest API! With our SDK you can use following resources:
 
 * [Projects](https://github.com/renderforest/renderforest-sdk-node/blob/master/docs/PROJECTS_API.md)
 * [Project-data](https://github.com/renderforest/renderforest-sdk-node/blob/master/docs/project-data-api/PROJECT_DATA_API.md)

docs/PROJECTS_API.md

@@ -10,6 +10,7 @@
   - [Apply Template Preset on the Project](#apply-template-preset-on-the-project)
   - [Duplicate the Project](#duplicate-the-project)
   - [Render the Project](#render-the-project)
+  - [Get rendering status](#get-rendering-status)
 
 ### Get All Projects
 
@@ -195,4 +196,31 @@ Renderforest.renderProject(4120385, { quality: 360, watermark: 'https://example.
 
 [See example](https://github.com/renderforest/renderforest-sdk-node/blob/master/samples/projects/render-project.js)
 
+
+### Get rendering status
+
+Our rendering status method uses user's defined `callback` to manage rendering status percentage 
+and uses error first callback pattern. If you want to unsubscribe from getting rendering status
+(before rendering finishes) then simply call 
+`unsubscribe` (`getRenderingStatus` method returns function to unsubscribe from getting rendering status).
+
+```js
+const RenderforestClient = require('@renderforest/sdk-node')
+
+const Renderforest = new RenderforestClient({ signKey: '<signKey>', clientId: -1 })
+
+Renderforest.renderProject(15431416, { quality: 720 })
+  .then(() => {
+    const unsubscribe = Renderforest.getRenderingStatus((error, percentage) => {
+      if (error) {
+        console.log(error)
+      }
+      // take percentage from here
+      console.log(percentage)
+      // if you want in unsubscribe (before rendering finishes) for some reason, then simply call unsubscribe
+      unsubscribe()
+    })
+  })
+```
+
 **[⬆ back to the top](#projects-api)**

docs/project-data-api/PROJECT_DATA_API.md

@@ -198,7 +198,7 @@ your changes with API. Save method can be called with chaining.
 Renderforest.getProjectData(15220886)
   .then((projectDataInstance) =>
     projectDataInstance.setMuteMusic(true)
-      /// do some changes, then call save() method
+      // do some changes, then call save() method
       .save()
   )
   .catch(console.error)

lib/api.js

@@ -7,12 +7,21 @@
  */
 
 const QueryString = require('querystring')
-
 const RequestPromise = require('request-promise')
+const socketClient = require('socket.io-client')
+
+const { createAuthorizationQuery, setAuthorization } = require('./auth')
 
-const Auth = require('./auth')
+const {
+  API_HOST,
+  WEB_HOST,
+  HTTP_DEFAULT_OPTIONS,
+  SOCKET_HOST,
+  REND_FINISHED_STATE,
+  REND_NOT_FINISHED_STATE
+} = require('./config')
 
-const { API_HOST, WEB_HOST, HTTP_DEFAULT_OPTIONS } = require('./config')
+const { SocketConnectionError } = require('./util/error')
 
 class Api {
   /**
@@ -80,7 +89,6 @@ class Api {
    */
   unauthorizedRequest (options) {
     const _options = Object.assign({}, HTTP_DEFAULT_OPTIONS, options)
-
     Api.prepareRequest(_options)
 
     return Api.request(_options)
@@ -93,9 +101,8 @@ class Api {
    */
   authorizedRequest (options) {
     const _options = Object.assign({}, HTTP_DEFAULT_OPTIONS, options)
-
     Api.prepareRequest(_options)
-    Auth.setAuthorization(_options, this.signKey, this.clientId)
+    setAuthorization(_options, this.signKey, this.clientId)
 
     return Api.request(_options)
   }
@@ -107,11 +114,38 @@ class Api {
    */
   webRequest (options) {
     const _options = Object.assign({}, HTTP_DEFAULT_OPTIONS, options)
-
     Api.appendURI(_options, WEB_HOST)
 
     return RequestPromise(_options)
   }
+
+  /**
+   * @param {Function} callback - The callback function for handling render status result.
+   * @return {unsubscribe}
+   */
+  socketConnection (callback) {
+    const renderStatus = socketClient(SOCKET_HOST, {
+      query: createAuthorizationQuery(this.clientId, this.signKey)
+    })
+
+    renderStatus.on('error', (error) => callback(new SocketConnectionError(error)))
+    renderStatus.on('event', (status) => {
+      if (status.state === 'rended') {
+        renderStatus.close()
+        return callback(null, REND_FINISHED_STATE)
+      } else {
+        // if `status.state` is not `rended` but percent is 100, then show rend not finished state
+        return callback(null, Math.min(REND_NOT_FINISHED_STATE, status.percent))
+      }
+    })
+
+    // if socket is still open, then force close manually.
+    const unsubscribe = () => {
+      renderStatus.close()
+    }
+
+    return unsubscribe
+  }
 }
 
 module.exports = new Api()

lib/auth.js

@@ -10,11 +10,10 @@ const url = require('url')
 
 const AuthUtil = require('./util/auth')
 
+const { SOCKET_ORIGINAL_URL } = require('./config')
+
 /**
- * Set Authorization.
- * @param {Object} options
- * @param {string} signKey
- * @param {number} clientId
+ * Set Authorization for api requests.
  */
 const setAuthorization = (options, signKey, clientId) => {
   const { path, query } = url.parse(options.uri)
@@ -35,6 +34,28 @@ const setAuthorization = (options, signKey, clientId) => {
   options.headers = Object.assign({}, options.headers, headers)
 }
 
+/**
+ * Builds authorization string for socket connection.
+ * @return {String}
+ */
+const createSocketAuthorizationString = (clientId, signKey, timestamp) => AuthUtil.createSocketAuthHash({
+  clientId,
+  timestamp,
+  originalUrl: SOCKET_ORIGINAL_URL
+}, signKey)
+
+/**
+ * Creates authorization query based on auth, clientId and timestamp.
+ * @return {String}
+ */
+const createAuthorizationQuery = (clientId, signKey) => {
+  const timestamp = Date.now()
+  const auth = createSocketAuthorizationString(clientId, signKey, timestamp)
+
+  return `authorization=${auth}&user_id=${clientId}&timestamp=${timestamp}`
+}
+
 module.exports = {
+  createAuthorizationQuery,
   setAuthorization
 }

lib/client.js

@@ -115,6 +115,14 @@ class RenderforestClient {
     return Projects.renderProject(projectId, params)
   }
 
+  /**
+   * @param {Function} callback
+   * @return {WebSocket}
+   */
+  getRenderingStatus (callback) {
+    return Projects.getRenderingStatus(callback)
+  }
+
   /**
    * @param {Object} params
    * @returns {Promise.<Object>}

lib/config.js

@@ -14,6 +14,10 @@ const CONFIG = {
     }
   },
   PROJECT_DATA_API_PREFIX: '/api/v5',
+  REND_FINISHED_STATE: 100,
+  REND_NOT_FINISHED_STATE: 99,
+  SOCKET_HOST: 'wss://sockets.renderforest.com',
+  SOCKET_ORIGINAL_URL: 'sockets.renderforest.com',
   WEB_HOST: 'https://www.renderforest.com',
   WEB_PREFIX: '/api/v1'
 }

lib/resources/projects.js

@@ -153,6 +153,11 @@ const renderProject = (projectId, params) => {
   return Api.authorizedRequest(options)
 }
 
+/**
+ * @param {Function} callback - The callback function for handling render status result.
+ */
+const getRenderingStatus = (callback) => Api.socketConnection(callback)
+
 module.exports = {
   getProject,
   addProject,
@@ -163,5 +168,6 @@ module.exports = {
   deleteProjectVideos,
   applyTemplatePresetOnProject,
   duplicateProject,
-  renderProject
+  renderProject,
+  getRenderingStatus
 }

lib/util/auth.js

@@ -8,53 +8,64 @@
 
 const crypto = require('crypto')
 
-class AuthUtil {
-  /**
-   * Creates keyed-hash message authentication code (HMAC).
-   *  Used core `crypto` module cryptographic hash function.
-   *  Secret key - sha512.
-   * @param {string} text
-   * @param {string} key
-   * @returns {string}
-   */
-  static createHMAC (text, key) {
-    return crypto.createHmac('sha512', key).update(text).digest('hex')
-  }
-
-  /**
-   * Generates HMAC based on source and key.
-   *  Source is defined as combination of clientId, path, qs, body, nonce and timestamp respectively.
-   * @param {{clientId, qs, path, body, nonce, timestamp}} options
-   * @param {string} key
-   * @returns {string}
-   */
-  static generateHash (options, key) {
-    const clientId = options.clientId
-    const qs = options.qs
-    const path = options.path
-    const body = options.body
-    const nonce = options.nonce
-    const timestamp = options.timestamp
-    const hashSource = `${clientId}${path}${qs}${body}${nonce}${timestamp}`
-
-    return AuthUtil.createHMAC(hashSource, key)
-  }
-
-  /**
-   * Generates nonce.
-   *  Creates timestamp
-   *  Gets the last 6 chars of the timestamp
-   *  Generates random number between 10-99
-   *  Combined the last two ones.
-   * @returns {string}
-   */
-  static generateNonce () {
-    const timestamp = Date.now().toString()
-    const str = timestamp.substring(timestamp.length - 6)
-    const suffix = Math.floor(Math.random() * 90 + 9)
-
-    return `${str}${suffix}`
-  }
+/**
+ * Creates keyed-hash message authentication code (HMAC).
+ *  Used core `crypto` module cryptographic hash function.
+ *  Secret key - sha512.
+ * @param {string} text
+ * @param {string} key
+ * @returns {string}
+ */
+const createHMAC = (text, key) => {
+  return crypto.createHmac('sha512', key).update(text).digest('hex')
+}
+
+/**
+ * Generates HMAC based on source and key.
+ *  Source is defined as combination of clientId, path, qs, body, nonce and timestamp respectively.
+ * @param {{clientId, qs, path, body, nonce, timestamp}} options
+ * @param {string} key
+ * @returns {string}
+ */
+const generateHash = (options, key) => {
+  const { clientId, qs, path, body, nonce, timestamp } = options
+  const hashSource = `${clientId}${path}${qs}${body}${nonce}${timestamp}`
+
+  return createHMAC(hashSource, key)
+}
+
+/**
+ * Generates nonce.
+ *  Creates timestamp
+ *  Gets the last 6 chars of the timestamp
+ *  Generates random number between 10-99
+ *  Combined the last two ones.
+ * @returns {string}
+ */
+const generateNonce = () => {
+  const timestamp = Date.now().toString()
+  const str = timestamp.substring(timestamp.length - 6)
+  const suffix = Math.floor(Math.random() * 90 + 9)
+
+  return `${str}${suffix}`
 }
 
-module.exports = AuthUtil
+/**
+ * Generates HMAC based on source and key.
+ *  Source is defined as combination of clientId, originalUrl, timestamp, signKey respectively.
+ * @param {{clientId, originalUrl, timestamp, signKey}} options
+ * @param {string} key
+ * @return {string}
+ */
+const createSocketAuthHash = (options, key) => {
+  const { clientId, originalUrl, timestamp } = options
+  const hashSource = `${clientId}${originalUrl}${timestamp}`
+
+  return createHMAC(hashSource, key)
+}
+
+module.exports = {
+  createSocketAuthHash,
+  generateHash,
+  generateNonce
+}

lib/util/error.js

@@ -18,7 +18,8 @@ const CUSTOM_ERRORS = [
   'RenderforestError',
   'ScreenHasVideoAreaError',
   'ScreenIdAlreadyExistsError',
-  'ScreenNotFoundError'
+  'ScreenNotFoundError',
+  'SocketConnectionError'
 ]
 
 const ERRORS = CUSTOM_ERRORS.reduce((acc, className) => {
@@ -52,5 +53,6 @@ const ERRORS = CUSTOM_ERRORS.reduce((acc, className) => {
  * @property ScreenHasVideoAreaError
  * @property ScreenIdAlreadyExistsError
  * @property ScreenNotFoundError
+ * @property SocketConnectionError
  */
 module.exports = ERRORS