feat(eventstore): increase parallel write capabilities (#5940)

This implementation increases parallel write capabilities of the eventstore.
Please have a look at the technical advisories: [05](https://zitadel.com/docs/support/advisory/a10005) and  [06](https://zitadel.com/docs/support/advisory/a10006).
The implementation of eventstore.push is rewritten and stored events are migrated to a new table `eventstore.events2`.
If you are using cockroach: make sure that the database user of ZITADEL has `VIEWACTIVITY` grant. This is used to query events.

internal/query/search_query.go

@@ -11,7 +11,7 @@ import (
 
 type SearchResponse struct {
 	Count uint64
-	*LatestSequence
+	*State
 }
 
 type SearchRequest struct {
@@ -43,6 +43,7 @@ func (req *SearchRequest) toQuery(query sq.SelectBuilder) sq.SelectBuilder {
 type SearchQuery interface {
 	toQuery(sq.SelectBuilder) sq.SelectBuilder
 	comp() sq.Sqlizer
+	Col() Column
 }
 
 type NotNullQuery struct {
@@ -66,6 +67,10 @@ func (q *NotNullQuery) comp() sq.Sqlizer {
 	return sq.NotEq{q.Column.identifier(): nil}
 }
 
+func (q *NotNullQuery) Col() Column {
+	return q.Column
+}
+
 type IsNullQuery struct {
 	Column Column
 }
@@ -87,6 +92,10 @@ func (q *IsNullQuery) comp() sq.Sqlizer {
 	return sq.Eq{q.Column.identifier(): nil}
 }
 
+func (q *IsNullQuery) Col() Column {
+	return q.Column
+}
+
 type orQuery struct {
 	queries []SearchQuery
 }
@@ -110,6 +119,10 @@ func (q *orQuery) comp() sq.Sqlizer {
 	return or
 }
 
+func (q *orQuery) Col() Column {
+	return Column{}
+}
+
 type ColumnComparisonQuery struct {
 	Column1 Column
 	Compare ColumnComparison
@@ -137,6 +150,10 @@ func (q *ColumnComparisonQuery) toQuery(query sq.SelectBuilder) sq.SelectBuilder
 	return query.Where(q.comp())
 }
 
+func (q *ColumnComparisonQuery) Col() Column {
+	return Column{}
+}
+
 func (s *ColumnComparisonQuery) comp() sq.Sqlizer {
 	switch s.Compare {
 	case ColumnEquals:
@@ -160,19 +177,10 @@ type InTextQuery struct {
 	Column Column
 	Values []string
 }
-type TextQuery struct {
-	Column  Column
-	Text    string
-	Compare TextComparison
-}
 
-var (
-	ErrNothingSelected = errors.New("nothing selected")
-	ErrInvalidCompare  = errors.New("invalid compare")
-	ErrMissingColumn   = errors.New("missing column")
-	ErrInvalidNumber   = errors.New("value is no number")
-	ErrEmptyValues     = errors.New("values array must not be empty")
-)
+func (q *InTextQuery) Col() Column {
+	return q.Column
+}
 
 func NewInTextQuery(col Column, values []string) (*InTextQuery, error) {
 	if len(values) == 0 {
@@ -187,6 +195,20 @@ func NewInTextQuery(col Column, values []string) (*InTextQuery, error) {
 	}, nil
 }
 
+type TextQuery struct {
+	Column  Column
+	Text    string
+	Compare TextComparison
+}
+
+var (
+	ErrNothingSelected = errors.New("nothing selected")
+	ErrInvalidCompare  = errors.New("invalid compare")
+	ErrMissingColumn   = errors.New("missing column")
+	ErrInvalidNumber   = errors.New("value is no number")
+	ErrEmptyValues     = errors.New("values array must not be empty")
+)
+
 func NewTextQuery(col Column, value string, compare TextComparison) (*TextQuery, error) {
 	if compare < 0 || compare >= textCompareMax {
 		return nil, ErrInvalidCompare
@@ -201,6 +223,10 @@ func NewTextQuery(col Column, value string, compare TextComparison) (*TextQuery,
 	}, nil
 }
 
+func (q *TextQuery) Col() Column {
+	return q.Column
+}
+
 func (q *InTextQuery) toQuery(query sq.SelectBuilder) sq.SelectBuilder {
 	return query.Where(q.comp())
 }
@@ -311,6 +337,10 @@ func (q *NumberQuery) toQuery(query sq.SelectBuilder) sq.SelectBuilder {
 	return query.Where(q.comp())
 }
 
+func (q *NumberQuery) Col() Column {
+	return q.Column
+}
+
 func (s *NumberQuery) comp() sq.Sqlizer {
 	switch s.Compare {
 	case NumberEquals:
@@ -427,6 +457,10 @@ func (s *ListQuery) comp() sq.Sqlizer {
 	return nil
 }
 
+func (q *ListQuery) Col() Column {
+	return q.Column
+}
+
 type ListComparison int
 
 const (
@@ -466,6 +500,10 @@ func (q *or) comp() sq.Sqlizer {
 	return sq.Or(queries)
 }
 
+func (q *or) Col() Column {
+	return Column{}
+}
+
 type BoolQuery struct {
 	Column Column
 	Value  bool
@@ -478,6 +516,10 @@ func NewBoolQuery(c Column, value bool) (*BoolQuery, error) {
 	}, nil
 }
 
+func (q *BoolQuery) Col() Column {
+	return q.Column
+}
+
 func (q *BoolQuery) toQuery(query sq.SelectBuilder) sq.SelectBuilder {
 	return query.Where(q.comp())
 }