41 lines
994 B
Go
41 lines
994 B
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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package twins
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import (
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"context"
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"time"
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)
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// State stores actual snapshot of entity's values
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type State struct {
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TwinID string
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ID int64
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Definition int
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Created time.Time
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Payload map[string]interface{}
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}
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// StatesPage contains page related metadata as well as a list of twins that
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// belong to this page.
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type StatesPage struct {
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PageMetadata
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States []State
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}
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// StateRepository specifies a state persistence API.
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type StateRepository interface {
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// Save persists the state
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Save(context.Context, State) error
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// Count returns the number of states related to state
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Count(context.Context, Twin) (int64, error)
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// RetrieveAll retrieves the subset of states related to twin specified by id
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RetrieveAll(ctx context.Context, offset uint64, limit uint64, id string) (StatesPage, error)
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// RetrieveLast retrieves the last saved state
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RetrieveLast(ctx context.Context, id string) (State, error)
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}
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