Display the deployed version in the application footer (#1670)

pulibrary · Sep 27, 2021 · 3689b32 · 3689b32
1 parent 844cead
commit 3689b32
Show file tree

Hide file tree

Showing 3 changed files with 37 additions and 0 deletions.
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
@@ -28,3 +28,8 @@ td.nowrap {
 td.no-edit, span.no-edit {
   background-color: rgba(230,191,153,0.5);
 }
+
+.deployment-version {
+  color: gray;
+  float: right;
+}
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
@@ -12,5 +12,8 @@
     <%= render partial: "shared/flash_messages", flash: flash %>
     <%= yield %>
   </div>
+  <div class="deployment-version">
+    Version <span title="<%= GIT_SHA %>"><%= BRANCH %> last updated <%= LAST_DEPLOYED %>.</span>
+  </div>
 </body>
 </html>
diff --git a/config/initializers/git_sha.rb b/config/initializers/git_sha.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+revisions_logfile = Rails.root.join("..", "..", "revisions.log")
+
+GIT_SHA =
+  if File.exist?(revisions_logfile)
+    `tail -1 #{revisions_logfile}`.chomp.split(" ")[3].gsub(/\)$/, "")
+  elsif Rails.env.development? || Rails.env.test?
+    `git rev-parse HEAD`.chomp
+  else
+    "Unknown SHA"
+  end
+
+BRANCH =
+  if File.exist?(revisions_logfile)
+    `tail -1 #{revisions_logfile}`.chomp.split(" ")[1]
+  elsif Rails.env.development? || Rails.env.test?
+    `git rev-parse --abbrev-ref HEAD`.chomp
+  else
+    "Unknown branch"
+  end
+
+LAST_DEPLOYED =
+  if File.exist?(revisions_logfile)
+    deployed = `tail -1 #{revisions_logfile}`.chomp.split(" ")[7]
+    Date.parse(deployed).strftime("%d %B %Y")
+  else
+    "Not in deployed environment"
+  end