[PR #6296/bf780ea7 backport][stable-6] terraform: remote state file e…

…xists check issue (#6331)

terraform: remote state file exists check issue (#6296)

* remote state file exists check

In the official CLI implementation of Terraform, if the state file does not exist, a new one will be created, and there is no need to check that the state file already exists and with an error if file not exists.

```bash
# Test command
terraform apply -state test.tfstate. # if state file not exists ,terraform will create a new one
terraform destroy -state test1.tfstate  ### Terraform will not throw any error, the command will succeed execute, only report no resource has destroy
```

* Update terraform.py

add 1 blank line to function end

* Create 6296-LanceNero-Terraform_statefile_check

remove file exists check (#6296)

* resolve if case issue

* Add blank line

* Update 6296-LanceNero-Terraform_statefile_check

* Update changelogs/fragments/6296-LanceNero-Terraform_statefile_check

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

* update code style

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

* Update suffix to correct CI issue

* Update Code Style

* Update bug-fix to feature release

---------

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
(cherry picked from commit bf780ea)

Co-authored-by: LanceNero <Lance.nero@gmail.com>

changelogs/fragments/6296-LanceNero-Terraform_statefile_check.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - terraform - remove state file check condition and error block, because in the native implementation of terraform will not cause errors due to the non-existent file (https://github.com/ansible-collections/community.general/pull/6296).

plugins/modules/terraform.py

@@ -312,11 +312,11 @@ def preflight_validation(bin_path, project_path, version, variables_args=None, p
 
 
 def _state_args(state_file):
-    if state_file and os.path.exists(state_file):
-        return ['-state', state_file]
-    if state_file and not os.path.exists(state_file):
-        module.fail_json(msg='Could not find state_file "{0}", check the path and try again.'.format(state_file))
-    return []
+    if not state_file:
+        return []
+    if not os.path.exists(state_file):
+        module.warn(msg='Could not find state_file "{0}", the process will not destroy any resources, please check your state file path.'.format(state_file))
+    return ['-state', state_file]
 
 
 def init_plugins(bin_path, project_path, backend_config, backend_config_files, init_reconfigure, provider_upgrade, plugin_paths, workspace):