vegvisir/pkg/cache/cache.go

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//
// Copyright (c) 2021 Piotr Biernat. https://pbiernat.dev. MIT License
// Repo: https://git.pbiernat.dev/golang/vegvisir
package cache
import (
"log"
"vegvisir/pkg/config"
)
const (
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typeRedis = "redis"
typeMemory = "memory"
)
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// Datastore interface
type Datastore interface {
SetKey(string, interface{}, int) error
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GetKey(string) (interface{}, error)
IsConnected() bool
}
// GetCacheDatastore function
func GetCacheDatastore(config config.Cache) *Datastore {
var datastore Datastore
if config.Type == typeRedis {
datastore = NewRedisDatastore(config.Host, config.Port)
} else {
datastore = NewMemoryDatastore()
}
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// fail-safe switch to memory datasource
if !datastore.IsConnected() {
log.Println("Cache server is not responding, switching to memory cache.")
datastore = NewMemoryDatastore()
}
return &datastore
}