ROX-27956: use vtproto functions as a default codec

[janisz]

Description

This PR creates a wrapper for a default grpc codec that will use VTproto functions when possible to un/marshal objects. This will reduce usage of reflection. Since we use bytes pool we cannot use unsafe unmarshaller as we do not own the byte slice see doc (like we do in pg stores).

Reference implementation: https://github.com/grpc/grpc-go/blob/v1.70.0/encoding/proto/proto.go#L33

                       │   old.txt    │               new.txt                │
                       │    sec/op    │    sec/op     vs base                │
ProtoUnmarshal/small-8   46.08µ ±  1%   42.39µ ± 18%        ~ (p=0.143 n=10)
ProtoUnmarshal/big-8     3.489m ± 63%   2.771m ± 64%        ~ (p=0.353 n=10)
geomean                  401.0µ         342.8µ        -14.53%

Refs:

• codec: implement codec v2 planetscale/vtprotobuf#138

• CHANGELOG update is not needed

• Documentation is not needed

Testing

• inspected CI results

Automated testing

• modified existing tests
• contributed no automated tests

How I validated my change

CI

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.04%. Comparing base (2d087e9) to head (4288be8).
Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #14083   +/-   ##
=======================================
  Coverage   49.04%   49.04%           
=======================================
  Files        2514     2515    +1     
  Lines      182854   182898   +44     
=======================================
+ Hits        89687    89710   +23     
- Misses      86045    86059   +14     
- Partials     7122     7129    +7     

Flag	Coverage Δ
go-unit-tests	49.04% <ø> (+<0.01%)	⬆️

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[rhybrillou]

Let's hold that one until after the 4.7 code freeze. Looks good otherwise.

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[rhacs-bot]

/retest

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/retest

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/retest

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[github-actions]

Performance test results

Summary

  █ main dashboard

  data_received..................: 2.5 MB 85 kB/s
  data_sent......................: 196 kB 6.8 kB/s
  group_duration.................: avg=581.31ms min=559.19ms med=572.03ms max=904.62ms p(90)=588.23ms p(95)=592.28ms
  http_req_blocked...............: avg=231.79µs min=300ns    med=451ns    max=104.07ms p(90)=591ns    p(95)=626ns   
  http_req_connecting............: avg=115.05µs min=0s       med=0s       max=51.77ms  p(90)=0s       p(95)=0s      
  http_req_duration..............: avg=64.24ms  min=51.79ms  med=57.21ms  max=167.7ms  p(90)=99.94ms  p(95)=103.23ms
    { expected_response:true }...: avg=67.67ms  min=55.69ms  med=59.21ms  max=167.7ms  p(90)=101.36ms p(95)=104.72ms
  ✓ { lib:true }.................: avg=0s       min=0s       med=0s       max=0s       p(90)=0s       p(95)=0s      
  http_req_failed................: 22.22% ✓ 100       ✗ 350
  http_req_receiving.............: avg=319.12µs min=22.19µs  med=37.58µs  max=103.07ms p(90)=323.25µs p(95)=413.07µs
  http_req_sending...............: avg=70.82µs  min=36.69µs  med=71.13µs  max=184.62µs p(90)=89.6µs   p(95)=94.24µs 
  http_req_tls_handshaking.......: avg=115.86µs min=0s       med=0s       max=52.13ms  p(90)=0s       p(95)=0s      
  http_req_waiting...............: avg=63.85ms  min=51.72ms  med=57.11ms  max=167.58ms p(90)=99.6ms   p(95)=103ms   
  http_reqs......................: 450    15.479587/s
  iteration_duration.............: avg=581.39ms min=559.27ms med=572.11ms max=904.8ms  p(90)=588.3ms  p(95)=592.35ms
  iterations.....................: 50     1.719954/s
  vus............................: 1      min=1       max=1
  vus_max........................: 1      min=1       max=1

Sources

• Summary: HTML Report | JSON
• Raw Data: CSV | JSON

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[janisz]

Comparison with test run on #14265

- grpc_req_duration: avg=444.81ms min=66.02ms  med=203.47ms max=1.79s    p(90)=1.28s    p(95)=1.33s   
+ grpc_req_duration: avg=139.77ms min=37.38ms  med=58.54ms  max=421.75ms p(90)=380.58ms p(95)=390.98ms