This is a module for accessing the all mighty Systemd Journal and its handy dandy key-value store hidden behind every log line. In the background it spawns a journalctl process with the output format
json and parses the serialised object stream.
Require the module and create a new instance:
const Journalctl = ;const journalctl = opts;
The optional object
opts can have the following properties:
identifier: Just output logs of the given syslog identifier (cf. man journalctl, option '-t')
unit: Just output logs originated from the given unit file (cf. man journalctl, option '-u')
filter: An array of matches to filter by (cf. man journalctl, matches)
all: Show all fields in full, even if they include unprintable characters or are very long. (cf. man journalctl, option '-a')
lines: Show the most recent journal events and limit the number of events shown (cf. man journalctl, option '-n')
since: Start showing entries on or newer than the specified date (cf. man journalctl, option '-S')
Is fired on every log event and hands over the object
event describing the event. (Oh boy ... so many events in one sentence ...)
Stops journalctl and calls the optional
callback once everything has been killed.