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67 lines
2.4 KiB
67 lines
2.4 KiB
// Copyright (c) 2022 Proton Technologies AG |
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// |
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// This file is part of ProtonMail Bridge. |
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// |
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// ProtonMail Bridge is free software: you can redistribute it and/or modify |
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// it under the terms of the GNU General Public License as published by |
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// the Free Software Foundation, either version 3 of the License, or |
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// (at your option) any later version. |
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// |
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// ProtonMail Bridge is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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// |
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// You should have received a copy of the GNU General Public License |
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>. |
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package cache |
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import ( |
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"path/filepath" |
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"github.com/ljanyst/peroxide/pkg/config/settings" |
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) |
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// Memory cache was estimated by empirical usage in past and it was set to 100MB. |
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// NOTE: This value must not be less than maximal size of one email (~30MB). |
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const inMemoryCacheLimnit = 100 * (1 << 20) |
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// LoadMessageCache loads local cache in case it is enabled in settings and available. |
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// In any other case it is returning in-memory cache. Could also return an error in case |
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// local cache is enabled but unavailable (in-memory cache will be returned nevertheless). |
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func LoadMessageCache(s *settings.Settings) (Cache, error) { |
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if !s.GetBool(settings.CacheEnabledKey) { |
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return NewInMemoryCache(inMemoryCacheLimnit), nil |
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} |
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var compressor Compressor |
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// NOTE(GODT-1158): Changing compression is not an option currently |
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// available for user but, if user changes compression setting we have |
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// to nuke the cache. |
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if s.GetBool(settings.CacheCompressionKey) { |
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compressor = &GZipCompressor{} |
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} else { |
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compressor = &NoopCompressor{} |
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} |
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path := filepath.Join(s.Get(settings.CacheDir), "messages") |
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// To prevent memory peaks we set maximal write concurency for store |
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// build jobs. |
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// store.SetBuildAndCacheJobLimit(s.GetInt(settings.CacheConcurrencyWrite)) |
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messageCache, err := NewOnDiskCache(path, compressor, Options{ |
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MinFreeAbs: uint64(s.GetInt(settings.CacheMinFreeAbsKey)), |
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MinFreeRat: s.GetFloat64(settings.CacheMinFreeRatKey), |
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ConcurrentRead: s.GetInt(settings.CacheConcurrencyRead), |
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ConcurrentWrite: s.GetInt(settings.CacheConcurrencyWrite), |
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}) |
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if err != nil { |
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return NewInMemoryCache(inMemoryCacheLimnit), err |
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} |
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return messageCache, nil |
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}
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