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stream.go
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stream.go
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// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package schema
import (
"context"
"google.golang.org/protobuf/types/known/timestamppb"
commonv1 "github.com/apache/skywalking-banyandb/api/proto/banyandb/common/v1"
databasev1 "github.com/apache/skywalking-banyandb/api/proto/banyandb/database/v1"
"github.com/apache/skywalking-banyandb/api/validate"
)
var streamKeyPrefix = "/streams/"
func (e *etcdSchemaRegistry) GetStream(ctx context.Context, metadata *commonv1.Metadata) (*databasev1.Stream, error) {
var entity databasev1.Stream
if err := e.get(ctx, formatStreamKey(metadata), &entity); err != nil {
return nil, err
}
return &entity, nil
}
func (e *etcdSchemaRegistry) ListStream(ctx context.Context, opt ListOpt) ([]*databasev1.Stream, error) {
if opt.Group == "" {
return nil, BadRequest("group", "group should not be empty")
}
messages, err := e.listWithPrefix(ctx, listPrefixesForEntity(opt.Group, streamKeyPrefix), KindStream)
if err != nil {
return nil, err
}
entities := make([]*databasev1.Stream, 0, len(messages))
for _, message := range messages {
entities = append(entities, message.(*databasev1.Stream))
}
return entities, nil
}
func (e *etcdSchemaRegistry) UpdateStream(ctx context.Context, stream *databasev1.Stream) (int64, error) {
if stream.UpdatedAt != nil {
stream.UpdatedAt = timestamppb.Now()
}
if err := validate.Stream(stream); err != nil {
return 0, err
}
group := stream.Metadata.GetGroup()
g, err := e.GetGroup(ctx, group)
if err != nil {
return 0, err
}
if err := validate.GroupForStreamOrMeasure(g); err != nil {
return 0, err
}
return e.update(ctx, Metadata{
TypeMeta: TypeMeta{
Kind: KindStream,
Group: stream.GetMetadata().GetGroup(),
Name: stream.GetMetadata().GetName(),
ModRevision: stream.GetMetadata().GetModRevision(),
},
Spec: stream,
})
}
func (e *etcdSchemaRegistry) CreateStream(ctx context.Context, stream *databasev1.Stream) (int64, error) {
if stream.UpdatedAt != nil {
stream.UpdatedAt = timestamppb.Now()
}
if err := validate.Stream(stream); err != nil {
return 0, err
}
group := stream.Metadata.GetGroup()
g, err := e.GetGroup(ctx, group)
if err != nil {
return 0, err
}
if err := validate.GroupForStreamOrMeasure(g); err != nil {
return 0, err
}
return e.create(ctx, Metadata{
TypeMeta: TypeMeta{
Kind: KindStream,
Group: stream.GetMetadata().GetGroup(),
Name: stream.GetMetadata().GetName(),
},
Spec: stream,
})
}
func (e *etcdSchemaRegistry) DeleteStream(ctx context.Context, metadata *commonv1.Metadata) (bool, error) {
return e.delete(ctx, Metadata{
TypeMeta: TypeMeta{
Kind: KindStream,
Group: metadata.GetGroup(),
Name: metadata.GetName(),
},
})
}
func formatStreamKey(metadata *commonv1.Metadata) string {
return formatKey(streamKeyPrefix, metadata)
}