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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package schema
import (
"context"
"github.com/pkg/errors"
"github.com/weaviate/weaviate/entities/models"
)
// DeleteClass from the schema
func (m *Manager) DeleteClass(ctx context.Context, principal *models.Principal, class string) error {
err := m.Authorizer.Authorize(principal, "delete", "schema/objects")
if err != nil {
return err
}
return m.deleteClass(ctx, class)
}
func (m *Manager) deleteClass(ctx context.Context, className string) error {
m.Lock()
defer m.Unlock()
tx, err := m.cluster.BeginTransaction(ctx, DeleteClass,
DeleteClassPayload{className}, DefaultTxTTL)
if err != nil {
// possible causes for errors could be nodes down (we expect every node to
// be up for a schema transaction) or concurrent transactions from other
// nodes
return errors.Wrap(err, "open cluster-wide transaction")
}
if err := m.cluster.CommitWriteTransaction(ctx, tx); err != nil {
// Only log the commit error, but do not abort the changes locally. Once
// we've told others to commit, we also need to commit ourselves!
//
// The idea is that if we abort our changes we are guaranteed to create an
// inconsistency as soon as any other node honored the commit. This would
// for example be the case in a 3-node cluster where node 1 is the
// coordinator, node 2 honored the commit and node 3 died during the commit
// phase.
//
// In this scenario it is far more desirable to make sure that node 1 and
// node 2 stay in sync, as node 3 - who may or may not have missed the
// update - can use a local WAL from the first TX phase to replay any
// missing changes once it's back.
m.logger.WithError(err).Errorf("not every node was able to commit")
}
return m.deleteClassApplyChanges(ctx, className)
}
func (m *Manager) deleteClassApplyChanges(ctx context.Context, className string) error {
if err := m.repo.DeleteClass(ctx, className); err != nil {
m.logger.WithField("action", "delete_class").
WithField("class", className).Errorf("schema: %v", err)
return err
}
if ok := m.schemaCache.detachClass(className); !ok {
return nil
}
if err := m.migrator.DropClass(ctx, className); err != nil {
m.logger.WithField("action", "delete_class").
WithField("class", className).Errorf("migrator: %v", err)
}
m.schemaCache.deleteClassState(className)
m.logger.WithField("action", "delete_class").WithField("class", className).Debug("")
m.triggerSchemaUpdateCallbacks()
return nil
}
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