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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cache
import (
"codeberg.org/gruf/go-cache/v3/result"
"github.com/superseriousbusiness/gotosocial/internal/config"
)
type VisibilityCache struct {
*result.Cache[*CachedVisibility]
}
// Init will initialize the visibility cache in this collection.
// NOTE: the cache MUST NOT be in use anywhere, this is not thread-safe.
func (c *VisibilityCache) Init() {
c.Cache = result.New([]result.Lookup{
{Name: "ItemID"},
{Name: "RequesterID"},
{Name: "Type.RequesterID.ItemID"},
}, func(v1 *CachedVisibility) *CachedVisibility {
v2 := new(CachedVisibility)
*v2 = *v1
return v2
}, config.GetCacheVisibilityMaxSize())
c.Cache.SetTTL(config.GetCacheVisibilityTTL(), true)
c.Cache.IgnoreErrors(ignoreErrors)
}
// Start will attempt to start the visibility cache, or panic.
func (c *VisibilityCache) Start() {
tryStart(c.Cache, config.GetCacheVisibilitySweepFreq())
}
// Stop will attempt to stop the visibility cache, or panic.
func (c *VisibilityCache) Stop() {
tryStop(c.Cache, config.GetCacheVisibilitySweepFreq())
}
// VisibilityType represents a visibility lookup type.
// We use a byte type here to improve performance in the
// result cache when generating the key.
type VisibilityType byte
const (
// Possible cache visibility lookup types.
VisibilityTypeAccount = VisibilityType('a')
VisibilityTypeStatus = VisibilityType('s')
VisibilityTypeHome = VisibilityType('h')
VisibilityTypePublic = VisibilityType('p')
)
// CachedVisibility represents a cached visibility lookup value.
type CachedVisibility struct {
// ItemID is the ID of the item in question (status / account).
ItemID string
// RequesterID is the ID of the requesting account for this visibility lookup.
RequesterID string
// Type is the visibility lookup type.
Type VisibilityType
// Value is the actual visibility value.
Value bool
}
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