github.com/kaleido-io/firefly@v0.0.0-20210622132723-8b4b6aacb971/internal/broadcast/syshandler.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  	"encoding/json"
    22  
    23  	"github.com/kaleido-io/firefly/internal/log"
    24  	"github.com/kaleido-io/firefly/pkg/fftypes"
    25  )
    26  
    27  func (bm *broadcastManager) HandleSystemBroadcast(ctx context.Context, msg *fftypes.Message, data []*fftypes.Data) (valid bool, err error) {
    28  	l := log.L(ctx)
    29  	l.Infof("Confirming system broadcast '%s' [%s]", msg.Header.Tag, msg.Header.ID)
    30  	switch fftypes.SystemTag(msg.Header.Tag) {
    31  	case fftypes.SystemTagDefineDatatype:
    32  		return bm.handleDatatypeBroadcast(ctx, msg, data)
    33  	case fftypes.SystemTagDefineNamespace:
    34  		return bm.handleNamespaceBroadcast(ctx, msg, data)
    35  	case fftypes.SystemTagDefineOrganization:
    36  		return bm.handleOrganizationBroadcast(ctx, msg, data)
    37  	case fftypes.SystemTagDefineNode:
    38  		return bm.handleNodeBroadcast(ctx, msg, data)
    39  	default:
    40  		l.Warnf("Unknown topic '%s' for system broadcast ID '%s'", msg.Header.Tag, msg.Header.ID)
    41  	}
    42  	return false, nil
    43  }
    44  
    45  func (bm *broadcastManager) getSystemBroadcastPayload(ctx context.Context, msg *fftypes.Message, data []*fftypes.Data, res fftypes.Definition) (valid bool) {
    46  	l := log.L(ctx)
    47  	if len(data) != 1 {
    48  		l.Warnf("Unable to process system broadcast %s - expecting 1 attachement, found %d", msg.Header.ID, len(data))
    49  		return false
    50  	}
    51  	err := json.Unmarshal(data[0].Value, &res)
    52  	if err != nil {
    53  		l.Warnf("Unable to process system broadcast %s - unmarshal failed: %s", msg.Header.ID, err)
    54  		return false
    55  	}
    56  	res.SetBroadcastMessage(msg.Header.ID)
    57  	return true
    58  }