deploy: try to restart the app when the CLI asks to do it

In some cases (rollback or deployment errored on clever side),
clever-tools will fail when calling `clever deploy` because it thinks
the currently being deployed commit is already deployed. However in
some cases the git pushed commit is not the currently running commit.

Leading to a failure in our deployment process. The proposed solution
from the clever tools error is to launch `clever restart`.

Until we wait for
https://github.com/CleverCloud/clever-tools/issues/422 to be fixed,
let's do what the error message say: try to restart in case of a
deployment failure.

2 files changed, 15 insertions, 1 deletions

diff --git a/tasks/deploy.yml b/tasks/deploy.yml
index 8dda5e0..39b5845 100644
--- a/tasks/deploy.yml
+++ b/tasks/deploy.yml
@@ -85,6 +85,13 @@
     - job_result.stderr is defined
     - job_result.stderr is search("Failed to read git object")
 
+- name: Restart app on clever-cloud when error asks to restart
+  include_tasks: restart.yml
+  when:
+    - not job_result.finished or not job_result.rc == 0
+    - job_result.stderr is defined
+    - job_result.stderr is search("clever restart")
+
 - name: Deploy logs (stdout)
   debug:
     var: job_result.stdout_lines
diff --git a/tasks/restart.yml b/tasks/restart.yml
index e2a8891..1c52032 100644
--- a/tasks/restart.yml
+++ b/tasks/restart.yml
@@ -1,6 +1,13 @@
 ---
+- name: Get current HEAD commit revision
+  command: "git rev-parse HEAD" # noqa 303
+  register: git_head_revision
+  args:
+    chdir: "{{ clever_app_root }}"
+  changed_when: false
+
 - name: Restart app on Clever-Cloud
-  shell: "clever restart"
+  shell: "clever restart --commit {{ git_head_revision.stdout_lines | first }}"
   args:
     chdir: "{{ clever_app_root }}"
   environment: