This script detects Unix signals and if received will perform an action, e.g. touch a file.
The use-case for this is in ECS where the containers of a Task need to know that they have been requested to stop and they should exit gracefully. This fills a gap where .Net Core has issues with receiving signals when run in daemon mode.
| Name | Description | Default |
|---|---|---|
| DEBUG | Show debug logging messages | True |
| USE_SEMAPHORE_FILE_STRATEGY | Use the strategy of touching a semaphore file | True |
| SEMAPHORE_FILE | Full path of the file to use as a semaphore | /semaphore/sigterm.txt |
| SEMAPHORE_FILE_ENSURE_REMOVED | Ensure that the semaphore file has been removed at startup | True |
| SLEEP_SECONDS | Delay between lifecycle processing | 0.5 |
| SAY_HELLO_SECONDS | Delay between logging a "running" message to show its alive | 30 |
| USE_ECS_TASK_STRATEGY | Use the strategy of naming the semaphore file from the ECS Task ID | False |
| ECS_TASK_STRATEGY_SEMAPHORE_FILE_TEMPLATE | Template for semaphore file name | /semaphore/##task_id## |
| ECS_CONTAINER_METADATA_URI | For ECS_TASK_STRATEGY - the URI for checking container metadata passed by ECS |