systemd is library for integrating Erlang applications with systemd. Currently supported features are: - notification socket - watchdog process - journal integration (via kmsg-like messages on stdout/stderr or via direct journal socket connection) - limited support for socket activation This introduced few breaking changes: • Removal of systemd_journal_formatter - now everything happenes in the systemd_journal_h and do not require user to remember to use one particular formatter • systemd_stderr_formatter was renamed to systemd_kmsg_formatter as it can be used with other output streams, not only standard_error, new name is derivation of format that the journal uses which is based on Linux kernel messages known as kmsg Other notable changes: • systemd:notify/2 was removed • systemd:notify/1 can now take list of messages to be sent at once • systemd_kmsg_formatter will be used automatically for all handlers that use logger_std_hwith type standard_io or standard_error if these are attached to the journal stream (wich is checked via JOURNAL_STREAM env variable set automatically by systemd) • systemd:ready/0 helper function that returns child spec for temporary child that will send ready notification, useful for adding it in the supervisor children list • Watchdog can now be manually forced to run, even if the PID mismatch |
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