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store.go
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store.go
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// Copyright © 2021 The Things Network Foundation, The Things Industries B.V.
//
// Licensed 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 events
import (
"context"
"time"
"go.thethings.network/lorawan-stack/v3/pkg/ttnpb"
)
// Store extends PubSub implementations with storage of historical events.
type Store interface {
PubSub
// FindRelated finds events with matching correlation IDs.
FindRelated(ctx context.Context, correlationID string) ([]Event, error)
// FetchHistory fetches the tail (optional) of historical events matching the given names (optional) and identifiers (mandatory) after the given time (optional).
FetchHistory(ctx context.Context, names []string, ids []*ttnpb.EntityIdentifiers, after *time.Time, tail int) ([]Event, error)
// SubscribeWithHistory is like FetchHistory, but after fetching historical events, this continues sending live events until the context is done.
SubscribeWithHistory(ctx context.Context, names []string, ids []*ttnpb.EntityIdentifiers, after *time.Time, tail int, hdl Handler) error
}