github.com/kaleido-io/firefly@v0.0.0-20210622132723-8b4b6aacb971/internal/broadcast/syshandler_namespace.go (about)

     1  // Copyright © 2021 Kaleido, Inc.
     2  //
     3  // SPDX-License-Identifier: Apache-2.0
     4  //
     5  // Licensed under the Apache License, Version 2.0 (the "License");
     6  // you may not use this file except in compliance with the License.
     7  // You may obtain a copy of the License at
     8  //
     9  //     http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing, software
    12  // distributed under the License is distributed on an "AS IS" BASIS,
    13  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14  // See the License for the specific language governing permissions and
    15  // limitations under the License.
    16  
    17  package broadcast
    18  
    19  import (
    20  	"context"
    21  
    22  	"github.com/kaleido-io/firefly/internal/log"
    23  	"github.com/kaleido-io/firefly/pkg/fftypes"
    24  )
    25  
    26  func (bm *broadcastManager) handleNamespaceBroadcast(ctx context.Context, msg *fftypes.Message, data []*fftypes.Data) (valid bool, err error) {
    27  	l := log.L(ctx)
    28  
    29  	var ns fftypes.Namespace
    30  	valid = bm.getSystemBroadcastPayload(ctx, msg, data, &ns)
    31  	if !valid {
    32  		return false, nil
    33  	}
    34  	if err := ns.Validate(ctx, true); err != nil {
    35  		l.Warnf("Unable to process namespace broadcast %s - validate failed: %s", msg.Header.ID, err)
    36  		return false, nil
    37  	}
    38  
    39  	existing, err := bm.database.GetNamespace(ctx, ns.Name)
    40  	if err != nil {
    41  		return false, err // We only return database errors
    42  	}
    43  	if existing != nil {
    44  		if existing.Type != fftypes.NamespaceTypeLocal {
    45  			l.Warnf("Unable to process namespace broadcast %s (name=%s) - duplicate of %v", msg.Header.ID, existing.Name, existing.ID)
    46  			return false, nil
    47  		}
    48  		// Remove the local definition
    49  		if err = bm.database.DeleteNamespace(ctx, existing.ID); err != nil {
    50  			return false, err
    51  		}
    52  	}
    53  
    54  	if err = bm.database.UpsertNamespace(ctx, &ns, false); err != nil {
    55  		return false, err
    56  	}
    57  
    58  	event := fftypes.NewEvent(fftypes.EventTypeNamespaceConfirmed, ns.Name, ns.ID, msg.Header.Group)
    59  	if err = bm.database.UpsertEvent(ctx, event, false); err != nil {
    60  		return false, err
    61  	}
    62  
    63  	return true, nil
    64  }