2016-12-02 9:30 GMT+01:00 Bob Gregory <[email protected]>:
> The problem there is that I'd need to reformat the json output of impstats
> in order for it to fit this module. I might be tempted to add a separate
> output format to impstats for that case, though, because it seems perverse
> to make people do that templating themselves.

+1 for additonal format. Should work out of the box. Pls open issue
tracker (and I don't mind if you create a PR for it).

>
> We can amortize that work if we also support a statsd output, which seems
> like a logical next step.

+1, also worth an issue

Side-note: I like the issues as they can cleanly show what work is
supposed to happen.I'll align all of them to the REK project in
github.

Rainer
>
> On Fri, 2 Dec 2016 at 08:12 Rainer Gerhards <[email protected]>
> wrote:
>
>> I need to think a bit before casting a ballot, but
>>
>> a) json blob sounds great
>> b) sounds useful for impstats -- impstats can generate json
>>
>> Raienr
>>
>> 2016-12-02 8:41 GMT+01:00 Bob Gregory <[email protected]>:
>> > Evening all,
>> >
>> > I've mostly finished my last personal project, so my thoughts are turning
>> > to omriemann.
>> >
>> > I'm trying to work out how we might configure the module. Riemann
>> requires
>> > that we send a protobuf encoded message containing a few pre-set fields,
>> > plus whatever additional fields we feel like forwarding.
>> >
>> > host: localhost
>> > service: cpu-load-average/1m
>> > state: ok
>> > time: 1480661786
>> > description: "everything is perfectly fine"
>> > tags: ["laptop", "personal"]
>> > metric: 0.58
>> > ttl: 120
>> > my-custom-field: 27
>> >
>> > This makes it unusual for an rsyslog module: usually rsyslog is happy to
>> > ship arbitrary strings to a destination and only cares about the
>> _framing_
>> > of your data: omelasticsearch, ommysql, omkafka, omrelp etc. all accept
>> > some number of static parameters, plus a free-form template for the
>> actual
>> > message.
>> >
>> > Omriemann, in order to be useful, will need to impose some structure on
>> the
>> > message itself.
>> >
>> > How do people think we should configure the module so that people have
>> > flexibility over the host, metric value, metric name, and tags on a
>> > per-message basis?
>> >
>> > I guess the simplest thing that could possibly work is defining a simple
>> > message format, eg. `host=foo; metric_f=0.6;
>> > service=rsyslog.impstats/utime; timestamp=1480661786` that messages need
>> to
>> > conform to. We can then parse out the key/value pairs in the module and
>> > encode them to protobuf.
>> >
>> > Alternatively, we could set up the structure of the message in the config
>> > itself, like this:
>> >
>> > action(
>> >    type="omriemann"
>> >    host="$hostname"
>> >    metric="$!metric.value"
>> >    service="$!metric.name")
>> >
>> > That seems more user-friendly, but rules out using custom fields. I guess
>> > I'd have to create a new template per-field during module begin.
>> >
>> > On a related note, I think I remember seeing some discussion of
>> conversion
>> > functions recently. Some of the fields need to valid integers, floats,
>> unix
>> > timestamps etc. What's the best way of parsing those out?
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