[v0.3.2][s]: Progress bar when uploading files to S3 (#31)

* [progress bar][s]: now we show progress bar of each file being uploaded - refs datopian/data-cli#116

* [progress bar][xs]: clear a progress bar once completed - refs datopian/data-cli#116

lib/utils/datahub.js

@@ -9,6 +9,7 @@ const toArray = require('stream-to-array')
 const infer = require('tableschema').infer
 const YAML = require('yamljs')
 const urljoin = require('url-join')
+const ProgressBar = require('progress')
 
 const {Agent} = require('./agent')
 const {checkUrlIsOK} = require('./common')
@@ -86,7 +87,17 @@ class DataHub extends EventEmitter {
         // https://github.com/datahq/datahub-qa/issues/60
         throw new Error("> You can not push empty files, please add some data and try again:\n" + resource.path)
       }
-
+      // Show the progress bar for each file being uploaded:
+      let bar = new ProgressBar(`  Uploading [:bar] :percent (:etas left)   ${resource.descriptor.path}`, {
+        complete: '*',
+        incomplete: ' ',
+        width: 30,
+        total: totalLength,
+        clear: true
+      })
+      formData.on('data', (chunk) => {
+        bar.tick(chunk.length)
+      })
       // Use straight fetch as not interacting with API but with external object store
       const res = await fetch(creds.upload_url, {
         method: 'POST',

package.json

@@ -1,6 +1,6 @@
 {
   "name": "datahub-client",
-  "version": "0.3.1",
+  "version": "0.3.2",
   "description": "APIs for interacting with DataHub",
   "main": "index.js",
   "scripts": {
@@ -51,7 +51,6 @@
     "markdown-table": "^1.1.1",
     "mkdirp": "^0.5.1",
     "nconf": "^0.9.1",
-    "nock": "^9.1.0",
     "node-fetch": "^1.7.3",
     "opn": "^5.1.0",
     "progress": "^2.0.0",
@@ -64,6 +63,7 @@
   "devDependencies": {
     "ava": "^0.19.1",
     "inquirer-test": "^1.0.5",
+    "nock": "^9.1.0",
     "sinon": "^4.1.2",
     "stream-to-array": "^2.3.0",
     "xo": "^0.18.2"