Nick Allen created METRON-1533:
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Summary: Create KAFKA_FIND Stellar Function
Key: METRON-1533
URL: https://issues.apache.org/jira/browse/METRON-1533
Project: Metron
Issue Type: Improvement
Reporter: Nick Allen
Assignee: Nick Allen
When creating enrichments, I often find that I want to validate that the
enrichment I just created was successful on the live, incoming stream of
telemetry. My workflow looks something like this.
1. Create and test the enrichment that I want to create.
{code:java}
[Stellar]>>> ip_src_addr := "72.34.49.86"
72.34.49.86
[Stellar]>>> geo := GEO_GET(ip_src_addr)
{country=US, dmaCode=803, city=Los Angeles, postalCode=90014, latitude=34.0438,
location_point=34.0438,-118.2512, locID=5368361, longitude=-118.2512}
{code}
2. That looks good to me. Now let's add that to my Bro telemetry.
{code:java}
[Stellar]>>> conf := SHELL_EDIT(conf)
{
"enrichment" : {
"fieldMap": {
"stellar": {
"config": [
"geo := GEO_GET(ip_src_addr)"
]
}
}
},
"threatIntel": {
}
}
[Stellar]>>> CONFIG_PUT("ENRICHMENTS", e, "bro")
{code}
3. It looks like that worked, but did that really work?
At this point, I would run KAFKA_GET as many times as it takes to retrieve a
Bro message. You would just have to get lucky and hope that the enrichment
worked and secondly that you would pull down a Bro message (as opposed to a
different sensor).
4. I would rather have a function that lets me only pull back the messages that
I care about. In this case I could either retrieve only Bro messages.
{code:java}
KAFKA_FIND('indexing', m -> MAP_GET('source.type', m) == 'bro')
{code}
Or I could look for messages that contain geolocation data.
{code:java}
KAFKA_FIND('topic', m -> MAP_EXISTS('geo', m))
{code}
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