// UpdateKeyspace is part of the topo.Server interface func (tee *Tee) UpdateKeyspace(ctx context.Context, ki *topo.KeyspaceInfo, existingVersion int64) (newVersion int64, err error) { if newVersion, err = tee.primary.UpdateKeyspace(ctx, ki, existingVersion); err != nil { // failed on primary, not updating secondary return } // if we have a mapping between keyspace version in first topo // and keyspace version in second topo, replace the version number. // if not, this will probably fail and log. tee.mu.Lock() kvm, ok := tee.keyspaceVersionMapping[ki.KeyspaceName()] if ok && kvm.readFromVersion == existingVersion { existingVersion = kvm.readFromSecondVersion delete(tee.keyspaceVersionMapping, ki.KeyspaceName()) } tee.mu.Unlock() if newVersion2, serr := tee.secondary.UpdateKeyspace(ctx, ki, existingVersion); serr != nil { // not critical enough to fail if serr == topo.ErrNoNode { // the keyspace doesn't exist on the secondary, let's // just create it if serr = tee.secondary.CreateKeyspace(ctx, ki.KeyspaceName(), ki.Keyspace); serr != nil { log.Warningf("secondary.CreateKeyspace(%v) failed (after UpdateKeyspace returned ErrNoNode): %v", ki.KeyspaceName(), serr) } else { log.Infof("secondary.UpdateKeyspace(%v) failed with ErrNoNode, CreateKeyspace then worked.", ki.KeyspaceName()) ki, gerr := tee.secondary.GetKeyspace(ctx, ki.KeyspaceName()) if gerr != nil { log.Warningf("Failed to re-read keyspace(%v) after creating it on secondary: %v", ki.KeyspaceName(), gerr) } else { tee.mu.Lock() tee.keyspaceVersionMapping[ki.KeyspaceName()] = versionMapping{ readFromVersion: newVersion, readFromSecondVersion: ki.Version(), } tee.mu.Unlock() } } } else { log.Warningf("secondary.UpdateKeyspace(%v) failed: %v", ki.KeyspaceName(), serr) } } else { tee.mu.Lock() tee.keyspaceVersionMapping[ki.KeyspaceName()] = versionMapping{ readFromVersion: newVersion, readFromSecondVersion: newVersion2, } tee.mu.Unlock() } return }