This shifts notification routing into the matcher-system. Every
notification has associated metadata (key-value fields, severity -
to be extended) that can be match with match directives in
notification matchers. Right now, there are 2 matching directives,
match-field and match-severity. The first one allows one to do a
regex match/exact match on a metadata field, the other one allows one
to match one or more severites.
Every matcher also allows 'target' directives, these decide which
target(s) will be notified if a matcher matches a notification.
Since routing now happens in matchers, the API for sending is
simplified, since we do not need to specify a target any more.
The API routes for filters and groups have been removed completely.
The parser for the configuration file will still accept filter/group
entries, but will delete them once the config is saved again. This is
needed to allow a smooth transition from the old system to the new
system, since the old system was already available on pvetest.
Signed-off-by: Lukas Wagner <l.wagner@proxmox.com>
This commit adds a way to filter notifications based on severity. The
filter module also has the necessary foundation work for more complex
filters, e.g. matching on properties or for creating arbitarily complex
filter structures using nested sub-filters.
Signed-off-by: Lukas Wagner <l.wagner@proxmox.com>
