[apache_tomcat] Improve access pipeline performance by split grok and switch to dissect

[SimonKoetting]

Restructuring apache_tomcat.access ingest pipeline to use dissect as first step and split grok into multiple processors to improve perfomance.
On test-env the ingest performance was more den doubled, from ~0.899ms per Document (average) to ~0.253ms per Document (average)

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• Start Time: 2023-12-14T11:41:29.938+0000

• Duration: 24 min 29 sec

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Name	Metrics % (covered/total)	Diff
Packages	100.0% (9/9)	💚
Files	100.0% (9/9)	💚 3.888
Classes	100.0% (9/9)	💚 3.888
Methods	97.561% (80/82)	👍 5.255
Lines	82.776% (990/1196)	👎 -5.968
Conditionals	100.0% (0/0)	💚

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[harnish-crest-data]

@SimonAtElastic, Can you please confirm as per your latest commit, the ingest performance is still ~304ms (average)?

[SimonKoetting]

@SimonAtElastic, Can you please confirm as per your latest commit, the ingest performance is still ~304ms (average)?

Not exactly, i now average ~0.25ms, so even improved :) I did the seperation of the grok before the dissect and then i got a slight improvement but after the dissect its performing better when combined.

[harnish-crest-data]

LGTM! 🚀

[ishleenk17]

Looks good!

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Package apache_tomcat - 1.2.0 containing this change is available at https://epr.elastic.co/search?package=apache_tomcat