Adding a way to see the git SHA from the website (#1956)

* Adding a way to see the git SHA from the website

* Fixing py3 bug

.gitignore

@@ -31,3 +31,4 @@ app.db
 node_modules
 npm-debug.log
 yarn.lock
+superset/assets/version_info.json

setup.py

@@ -1,5 +1,5 @@
-import imp
 import os
+import subprocess
 import json
 from setuptools import setup, find_packages
 
@@ -9,6 +9,28 @@
 with open(PACKAGE_FILE) as package_file:
     version_string = json.load(package_file)['version']
 
+
+def get_git_sha():
+    try:
+        s = str(subprocess.check_output(['git', 'rev-parse', 'HEAD']))
+        return s.strip()
+    except:
+        pass
+
+GIT_SHA = get_git_sha()
+version_info = {
+    'GIT_SHA': GIT_SHA,
+    'version': version_string,
+}
+print("-==-" * 15)
+print("VERSION: " + version_string)
+print("GIT SHA: " + GIT_SHA)
+print("-==-" * 15)
+
+with open(os.path.join(PACKAGE_DIR, 'version_info.json'), 'w') as version_file:
+    json.dump(version_info, version_file)
+
+
 setup(
     name='superset',
     description=(

superset/templates/appbuilder/navbar.html

@@ -21,6 +21,11 @@
         {% include 'appbuilder/navbar_menu.html' %}
       </ul>
       <ul class="nav navbar-nav navbar-right">
+        <li>
+          <a href="/static/assets/version_info.json" title="Version info">
+            <i class="fa fa-code-fork"></i> &nbsp;
+          </a>
+        </li>
         <li>
           <a href="https://github.com/airbnb/superset" title="Superset's Github">
             <i class="fa fa-github"></i> &nbsp;