From f0b260d7dca966ee2ce3e94a8122f807f8d18a39 Mon Sep 17 00:00:00 2001
From: Zach Feldman <zach@nycda.com>
Date: Sun, 8 Nov 2015 14:37:18 -0500
Subject: [PATCH] Adds dokku apps:rename function, closes #1440.

Adds unit test for new apps:rename function.

Add example in the docs for new apps:rename function.

Add apps:rename command to help command.

Delete cache directory before copying old app directory to new app directory.

deploy_app instead of create_app for apps:rename testing.

Change app url to match new name. Fix unit tests.

Add some more tests, plugn triggers.
---
 docs/application-deployment.md | 10 ++++++++++
 plugins/apps/commands          | 21 ++++++++++++++++++++-
 tests/unit/apps.bats           | 20 ++++++++++++++++++++
 3 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/docs/application-deployment.md b/docs/application-deployment.md
index 9b0c79b21..f3028175a 100644
--- a/docs/application-deployment.md
+++ b/docs/application-deployment.md
@@ -100,6 +100,16 @@ This will prompt you to verify the application's name before destroying it. You
 dokku --force apps:destroy APP
 ```
 
+### Renaming a deployed app
+
+You can rename a deployed app using the `apps:rename` CLI tool:
+
+```shell
+dokku apps:rename OLD_NAME NEW_NAME
+```
+
+This will copy all of your app's contents into a new app directory with the name of your choice, delete your old app, then rebuild the new version of the app and deploy it. All of your config variables, including database urls, will be preserved.
+
 ### Adding deploy users
 
 While it is possible to use password-based authorization to push to Dokku, it is preferable to use key-based authentication for security. You can add your public key to the dokku user's `authorized_keys` file with the following command:
diff --git a/plugins/apps/commands b/plugins/apps/commands
index e844f9020..b9baa53ee 100755
--- a/plugins/apps/commands
+++ b/plugins/apps/commands
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-[[ " apps apps:create apps:destroy help apps:help " == *" $1 "* ]] || exit $DOKKU_NOT_IMPLEMENTED_EXIT
+[[ " apps apps:create apps:rename apps:destroy help apps:help " == *" $1 "* ]] || exit $DOKKU_NOT_IMPLEMENTED_EXIT
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
 source "$PLUGIN_AVAILABLE_PATH/apps/functions"
@@ -13,7 +13,25 @@ case "$1" in
   apps:create)
     apps_create $2
     ;;
+  
+  apps:rename)
+    [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
+    [[ -d "$DOKKU_ROOT/$3" ]] && dokku_log_fail "Name is already taken"
+    OLD_APP="$2"
+    NEW_APP="$3"
 
+    mkdir -p "$DOKKU_ROOT/$NEW_APP"
+    docker run --rm -v "$DOKKU_ROOT/$OLD_APP/cache:/cache" "dokku/$OLD_APP" chmod 777 -R /cache
+    rm -rf "$DOKKU_ROOT/$OLD_APP/cache"
+    cp -a "$DOKKU_ROOT/$OLD_APP/." "$DOKKU_ROOT/$NEW_APP"
+    dokku apps:destroy $OLD_APP --force
+    sed -i -e "s/$OLD_APP/$NEW_APP/g" "$DOKKU_ROOT/$NEW_APP/URLS"
+    sed -i -e "s/$OLD_APP/$NEW_APP/g" "$DOKKU_ROOT/$NEW_APP/VHOST"
+    dokku ps:rebuild $NEW_APP
+    plugn trigger post-app-rename $OLD_APP $NEW_APP
+    echo "Renaming $OLD_APP to $NEW_APP... done"
+    ;;
+ 
   apps:destroy)
     [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
     [[ "$2" == "tls" ]] && dokku_log_fail "Unable to destroy tls directory"
@@ -52,6 +70,7 @@ case "$1" in
     apps, List your apps
     apps:create <app>, Create a new app
     apps:destroy <app>, Permanently destroy an app
+    apps:rename <old-app> <new-app>, Rename an app
 EOF
     ;;
 
diff --git a/tests/unit/apps.bats b/tests/unit/apps.bats
index 099be0895..587d562b4 100644
--- a/tests/unit/apps.bats
+++ b/tests/unit/apps.bats
@@ -26,3 +26,23 @@ load test_helper
   echo "status: "$status
   assert_success
 }
+
+@test "(apps) apps:rename" {
+  deploy_app
+  run bash -c "dokku apps:rename $TEST_APP great-test-name"
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+  run bash -c "dokku apps | grep $TEST_APP"
+  echo "output: "$output
+  echo "status: "$status
+  assert_output ""
+  run bash -c "curl --silent --write-out '%{http_code}\n' `dokku url great-test-name` | grep 404"
+  echo "output: "$output
+  echo "status: "$status
+  assert_output ""
+  run bash -c "dokku --force apps:destroy great-test-name"
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+}