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671c32affe
* Add metadata field to channels and update things metadata Add metadata field to channels. Update thing metadata field to be in JSON format. Update tests.. Signed-off-by: Aleksandar Novakovic <aleksandar.novakovic@mainflux.com> * Add metadata to channel events Signed-off-by: Aleksandar Novakovic <aleksandar.novakovic@mainflux.com> * Add metadata field to channel in go SDK Signed-off-by: Aleksandar Novakovic <aleksandar.novakovic@mainflux.com>
69 lines
2.0 KiB
Go
69 lines
2.0 KiB
Go
//
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// Copyright (c) 2018
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// Mainflux
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package things
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// Channel represents a Mainflux "communication group". This group contains the
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// things that can exchange messages between eachother.
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type Channel struct {
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ID uint64
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Owner string
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Name string
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Things []Thing
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Metadata string
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}
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// ChannelRepository specifies a channel persistence API.
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type ChannelRepository interface {
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// Save persists the channel. Successful operation is indicated by unique
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// identifier accompanied by nil error response. A non-nil error is
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// returned to indicate operation failure.
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Save(Channel) (uint64, error)
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// Update performs an update to the existing channel. A non-nil error is
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// returned to indicate operation failure.
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Update(Channel) error
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// RetrieveByID retrieves the channel having the provided identifier, that is owned
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// by the specified user.
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RetrieveByID(string, uint64) (Channel, error)
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// RetrieveAll retrieves the subset of channels owned by the specified user.
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RetrieveAll(string, uint64, uint64) []Channel
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// Remove removes the channel having the provided identifier, that is owned
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// by the specified user.
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Remove(string, uint64) error
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// Connect adds thing to the channel's list of connected things.
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Connect(string, uint64, uint64) error
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// Disconnect removes thing from the channel's list of connected
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// things.
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Disconnect(string, uint64, uint64) error
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// HasThing determines whether the thing with the provided access key, is
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// "connected" to the specified channel. If that's the case, it returns
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// thing's ID.
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HasThing(uint64, string) (uint64, error)
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}
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// ChannelCache contains channel-thing connection caching interface.
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type ChannelCache interface {
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// Connect channel thing connection.
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Connect(uint64, uint64) error
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// HasThing checks if thing is connected to channel.
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HasThing(uint64, uint64) bool
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// Disconnects thing from channel.
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Disconnect(uint64, uint64) error
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// Removes channel from cache.
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Remove(uint64) error
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}
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