fix(fields): add index to improve search by aggregate (#8267)

# Which Problems Are Solved

During performance testing of the `eventstore.fields` table we found
some long running queries which searched for the aggregate id.

# How the Problems Are Solved

A new index was added to the `eventstore.fields`-table called
`f_aggregate_object_type_idx`.

# Additional Changes

None

# Additional Context

- Table was added in https://github.com/zitadel/zitadel/pull/8191
- Part of https://github.com/zitadel/zitadel/issues/7639

cmd/setup/31.go

@@ -0,0 +1,27 @@
+package setup
+
+import (
+	"context"
+	_ "embed"
+
+	"github.com/zitadel/zitadel/internal/database"
+	"github.com/zitadel/zitadel/internal/eventstore"
+)
+
+var (
+	//go:embed 31.sql
+	addAggregateIndexToFields string
+)
+
+type AddAggregateIndexToFields struct {
+	dbClient *database.DB
+}
+
+func (mig *AddAggregateIndexToFields) Execute(ctx context.Context, _ eventstore.Event) error {
+	_, err := mig.dbClient.ExecContext(ctx, addAggregateIndexToFields)
+	return err
+}
+
+func (mig *AddAggregateIndexToFields) String() string {
+	return "31_add_aggregate_index_to_fields"
+}

cmd/setup/31.sql

@@ -0,0 +1 @@
+CREATE INDEX CONCURRENTLY IF NOT EXISTS f_aggregate_object_type_idx ON eventstore.fields (aggregate_type, aggregate_id, object_type);

cmd/setup/config.go

@@ -114,6 +114,7 @@ type Steps struct {
 	s28AddFieldTable                       *AddFieldTable
 	s29FillFieldsForProjectGrant           *FillFieldsForProjectGrant
 	s30FillFieldsForOrgDomainVerified      *FillFieldsForOrgDomainVerified
+	s31AddAggregateIndexToFields           *AddAggregateIndexToFields
 }
 
 func MustNewSteps(v *viper.Viper) *Steps {

cmd/setup/setup.go

@@ -159,6 +159,7 @@ func Setup(ctx context.Context, config *Config, steps *Steps, masterKey string)
 	steps.s28AddFieldTable = &AddFieldTable{dbClient: esPusherDBClient}
 	steps.s29FillFieldsForProjectGrant = &FillFieldsForProjectGrant{eventstore: eventstoreClient}
 	steps.s30FillFieldsForOrgDomainVerified = &FillFieldsForOrgDomainVerified{eventstore: eventstoreClient}
+	steps.s31AddAggregateIndexToFields = &AddAggregateIndexToFields{dbClient: esPusherDBClient}
 
 	err = projection.Create(ctx, projectionDBClient, eventstoreClient, config.Projections, nil, nil, nil)
 	logging.OnError(err).Fatal("unable to start projections")
@@ -182,6 +183,7 @@ func Setup(ctx context.Context, config *Config, steps *Steps, masterKey string)
 		steps.s1ProjectionTable,
 		steps.s2AssetsTable,
 		steps.s28AddFieldTable,
+		steps.s31AddAggregateIndexToFields,
 		steps.FirstInstance,
 		steps.s5LastFailed,
 		steps.s6OwnerRemoveColumns,