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fix(eventstore): precise decimal (#8527)

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# Which Problems Are Solved

Float64 which was used for the event.Position field is [not precise in
go and gets rounded](https://github.com/golang/go/issues/47300). This
can lead to unprecies position tracking of events and therefore
projections especially on cockcoachdb as the position used there is a
big number.

example of a unprecies position:
exact: 1725257931223002628
float64: 1725257931223002624.000000

# How the Problems Are Solved

The float64 was replaced by
[github.com/jackc/pgx-shopspring-decimal](https://github.com/jackc/pgx-shopspring-decimal).

# Additional Changes

Correct behaviour of makefile for load tests.
Rename `latestSequence`-queries to `latestPosition`
This commit is contained in:
Silvan
2024-09-06 11:19:19 +02:00
committed by GitHub
parent 2981ff04da
commit b522588d98
47 changed files with 319 additions and 215 deletions
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9
internal/eventstore/handler/v2/field_handler.go
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@@ -8,6 +8,7 @@ import (
"time"
"github.com/jackc/pgx/v5/pgconn"
"github.com/shopspring/decimal"
"github.com/zitadel/zitadel/internal/eventstore"
)
@@ -123,7 +124,7 @@ func (h *FieldHandler) processEvents(ctx context.Context, config *triggerConfig)
return additionalIteration, err
}
// stop execution if currentState.eventTimestamp >= config.maxCreatedAt
if config.maxPosition != 0 && currentState.position >= config.maxPosition {
if !config.maxPosition.IsZero() && currentState.position.GreaterThanOrEqual(config.maxPosition) {
return false, nil
}
@@ -156,7 +157,7 @@ func (h *FieldHandler) fetchEvents(ctx context.Context, tx *sql.Tx, currentState
idx, offset := skipPreviouslyReducedEvents(events, currentState)
if currentState.position == events[len(events)-1].Position() {
if currentState.position.Equal(events[len(events)-1].Position()) {
offset += currentState.offset
}
currentState.position = events[len(events)-1].Position()
@@ -186,9 +187,9 @@ func (h *FieldHandler) fetchEvents(ctx context.Context, tx *sql.Tx, currentState
}
func skipPreviouslyReducedEvents(events []eventstore.Event, currentState *state) (index int, offset uint32) {
var position float64
var position decimal.Decimal
for i, event := range events {
if event.Position() != position {
if !event.Position().Equal(position) {
offset = 0
position = event.Position()
}