fix(eventstore): use decimal, correct mirror (#9914)

# Eventstore fixes

- `event.Position` used float64 before which can lead to [precision
loss](https://github.com/golang/go/issues/47300). The type got replaced
by [a type without precision
loss](https://github.com/jackc/pgx-shopspring-decimal)
- the handler reported the wrong error if the current state was updated
and therefore took longer to retry failed events.

# Mirror fixes

- max age of auth requests can be configured to speed up copying data
from `auth.auth_requests` table. Auth requests last updated before the
set age will be ignored. Default is 1 month
- notification projections are skipped because notifications should be
sent by the source system. The projections are set to the latest
position
- ensure that mirror can be executed multiple times

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/eventstore/search_query.go

@@ -5,6 +5,8 @@ import (
 	"database/sql"
 	"time"
 
+	"github.com/shopspring/decimal"
+
 	"github.com/zitadel/zitadel/internal/api/authz"
 	"github.com/zitadel/zitadel/internal/zerrors"
 )
@@ -25,7 +27,7 @@ type SearchQueryBuilder struct {
 	tx                    *sql.Tx
 	lockRows              bool
 	lockOption            LockOption
-	positionAfter         float64
+	positionAtLeast       decimal.Decimal
 	awaitOpenTransactions bool
 	creationDateAfter     time.Time
 	creationDateBefore    time.Time
@@ -76,8 +78,8 @@ func (b *SearchQueryBuilder) GetTx() *sql.Tx {
 	return b.tx
 }
 
-func (b SearchQueryBuilder) GetPositionAfter() float64 {
-	return b.positionAfter
+func (b SearchQueryBuilder) GetPositionAtLeast() decimal.Decimal {
+	return b.positionAtLeast
 }
 
 func (b SearchQueryBuilder) GetAwaitOpenTransactions() bool {
@@ -113,7 +115,7 @@ type SearchQuery struct {
 	aggregateIDs   []string
 	eventTypes     []EventType
 	eventData      map[string]interface{}
-	positionAfter  float64
+	positionAfter  decimal.Decimal
 }
 
 func (q SearchQuery) GetAggregateTypes() []AggregateType {
@@ -132,7 +134,7 @@ func (q SearchQuery) GetEventData() map[string]interface{} {
 	return q.eventData
 }
 
-func (q SearchQuery) GetPositionAfter() float64 {
+func (q SearchQuery) GetPositionAfter() decimal.Decimal {
 	return q.positionAfter
 }
 
@@ -156,8 +158,8 @@ type Columns int8
 const (
 	//ColumnsEvent represents all fields of an event
 	ColumnsEvent = iota + 1
-	// ColumnsMaxSequence represents the latest sequence of the filtered events
-	ColumnsMaxSequence
+	// ColumnsMaxPosition represents the latest sequence of the filtered events
+	ColumnsMaxPosition
 	// ColumnsInstanceIDs represents the instance ids of the filtered events
 	ColumnsInstanceIDs
 
@@ -284,9 +286,9 @@ func (builder *SearchQueryBuilder) EditorUser(id string) *SearchQueryBuilder {
 	return builder
 }
 
-// PositionAfter filters for events which happened after the specified time
-func (builder *SearchQueryBuilder) PositionAfter(position float64) *SearchQueryBuilder {
-	builder.positionAfter = position
+// PositionAtLeast filters for events which happened after the specified time
+func (builder *SearchQueryBuilder) PositionAtLeast(position decimal.Decimal) *SearchQueryBuilder {
+	builder.positionAtLeast = position
 	return builder
 }
 
@@ -393,7 +395,7 @@ func (query *SearchQuery) EventData(data map[string]interface{}) *SearchQuery {
 	return query
 }
 
-func (query *SearchQuery) PositionAfter(position float64) *SearchQuery {
+func (query *SearchQuery) PositionAfter(position decimal.Decimal) *SearchQuery {
 	query.positionAfter = position
 	return query
 }