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0c77d84176
* Add redis caching for thing and channel connections Signed-off-by: Aleksandar Novakovic <aleksandar.novakovic@mainflux.com> * Fix authorization caching flow Signed-off-by: Aleksandar Novakovic <aleksandar.novakovic@mainflux.com> * Update things documentation Signed-off-by: Aleksandar Novakovic <aleksandar.novakovic@mainflux.com>
57 lines
1.2 KiB
Go
57 lines
1.2 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 redis
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import (
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"fmt"
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"strconv"
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"github.com/go-redis/redis"
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"github.com/mainflux/mainflux/things"
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)
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const chanPrefix = "channel"
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var _ things.ChannelCache = (*channelCache)(nil)
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type channelCache struct {
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client *redis.Client
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}
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// NewChannelCache returns redis channel cache implementation.
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func NewChannelCache(client *redis.Client) things.ChannelCache {
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return channelCache{client: client}
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}
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func (cc channelCache) Connect(chanID, thingID uint64) error {
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cid, tid := kv(chanID, thingID)
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return cc.client.SAdd(cid, tid).Err()
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}
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func (cc channelCache) HasThing(chanID, thingID uint64) bool {
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cid, tid := kv(chanID, thingID)
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return cc.client.SIsMember(cid, tid).Val()
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}
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func (cc channelCache) Disconnect(chanID, thingID uint64) error {
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cid, tid := kv(chanID, thingID)
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return cc.client.SRem(cid, tid).Err()
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}
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func (cc channelCache) Remove(chanID uint64) error {
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cid, _ := kv(chanID, 0)
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return cc.client.Del(cid).Err()
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}
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// Generates key-value pair
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func kv(chanID, thingID uint64) (string, string) {
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cid := fmt.Sprintf("%s:%d", chanPrefix, chanID)
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tid := strconv.FormatUint(thingID, 10)
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return cid, tid
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}
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