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feat(systemdNotify): limit to one invocation every 15 minutes per service
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Also adds an `ExecCondition` for ignoring service auto-resarts.
This commit is contained in:
Felix Schröter 2025-09-23 22:15:57 +02:00
parent c8e0b67ed4
commit 9690a9de0f
Signed by: felschr
GPG key ID: 671E39E6744C807D
1 changed files with 43 additions and 27 deletions
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70
modules/systemdNotify.nix
View file

@ -26,6 +26,16 @@ let
$(systemctl status --full "$1")
ERRMAIL
'';
checkConditions = pkgs.writeScript "check-conditions" ''
#!/bin/sh
STATUS=$(systemctl status --full "$1")
case "$STATUS" in
*"activating (auto-restart) (Result: timeout)"*) exit 1 ;;
*) exit 0 ;;
esac
'';
in
{
options = {
@ -85,32 +95,38 @@ in
}
];
systemd.services."notify@" = {
onFailure = lib.mkForce [ ];
}
// optionalAttrs (cfg.method == "libnotify") {
description = "Desktop notifications for %i service failure";
environment = {
DISPLAY = ":0";
INSTANCE = "%i";
};
script = ''
export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$(id -u '${cfg.libnotify.user}')/bus"
${pkgs.libnotify}/bin/notify-send --app-name="$INSTANCE" --urgency=critical \
"Service '$INSTANCE' failed" \
"$(journalctl -n 6 -o cat -u $INSTANCE)"
'';
serviceConfig = {
Type = "oneshot";
User = cfg.libnotify.user;
};
}
// optionalAttrs (cfg.method == "email") {
description = "E-Mail notifications for %i service failure";
serviceConfig = {
ExecStart = "${sendmail} %i";
Type = "oneshot";
};
};
systemd.services."notify@" =
lib.recursiveUpdate
{
onFailure = lib.mkForce [ ];
unitConfig = {
StartLimitIntervalSec = "15m";
StartLimitBurst = 1;
};
serviceConfig = {
Type = "oneshot";
ExecCondition = "${checkConditions} %i";
};
}
(
optionalAttrs (cfg.method == "libnotify") {
description = "Desktop notifications for %i service failure";
environment = {
DISPLAY = ":0";
INSTANCE = "%i";
};
script = ''
export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$(id -u '${cfg.libnotify.user}')/bus"
${pkgs.libnotify}/bin/notify-send --app-name="$INSTANCE" --urgency=critical \
"Service '$INSTANCE' failed" \
"$(journalctl -n 6 -o cat -u $INSTANCE)"
'';
serviceConfig.User = cfg.libnotify.user;
}
// optionalAttrs (cfg.method == "email") {
description = "E-Mail notifications for %i service failure";
serviceConfig.ExecStart = "${sendmail} %i";
}
);
};
}