"on ()" keyword ignored in alert IF statement when loaded from rules file

[brymatm]

What did you do?

I added lines similar to the following (one recording rule, multiple alerts) to my rules file and restarted my Prometheus server:

workhours=day_of_week() < bool 6 * hour() >= bool 13 * hour() < bool 22

ALERT rateAlert_server_datafeed
IF rate(server_datafeed[10m]) == 0 and on () workhours == 1
LABELS { topic = "datafeed", }
ANNOTATIONS {
summary = "Topic datafeed on {{ $labels.job }} has not received a message for at least 10 minutes",
subject = "No messages for topic datafeed on {{ $labels.job }}",
}

What did you expect to see?

On the Prometheus Status|Rules page I expected to see something like this:

workhours{} = day_of_week() < BOOL 6 * hour() >= BOOL 13 * hour() < BOOL 22
ALERT rateAlert_server_datafeed
IF rate(server_datafeed[10m]) == 0 and on () workhours == 1
LABELS {topic="datafeed"}
ANNOTATIONS {subject="No messages for topic datafeed on {{ $labels.job }}", summary="Topic datafeed on {{ $labels.job }} has not received a message for at least 10 minutes"}

What did you see instead? Under which circumstances?

On the Prometheus Status|Rules page I saw something like this with the IF statement missing the "on ()" keyword:

workhours{} = day_of_week() < BOOL 6 * hour() >= BOOL 13 * hour() < BOOL 22
ALERT rateAlert_server_datafeed
IF rate(server_datafeed[10m]) == 0 and workhours == 1
LABELS {topic="datafeed"}
ANNOTATIONS {subject="No messages for topic datafeed on {{ $labels.job }}", summary="Topic datafeed on {{ $labels.job }} has not received a message for at least 10 minutes"}

Environment

• System information:

Linux 2.6.32-358.el6.x86_64 x86_64

• Prometheus version:

prometheus, version 1.2.1 (branch: master, revision: dd66f2e)
build user: root@fd9b0daff6bd
build date: 20161010-15:58:23
go version: go1.7.1

• Alertmanager version:
• Prometheus configuration file:
• Alertmanager configuration file:
• Logs:

[grobie]

The issue is that the printer only shows vector matching related keywords if any matching labels are provided. I guess we'll need a way to indicate whether a field was set, bool pointers or an additional field come to my mind.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.