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89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero 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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// This program 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"sync/atomic"
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)
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// CacheDiskStats represents cache disk statistics
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// such as current disk usage and available.
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type CacheDiskStats struct {
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// used cache size
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UsageSize uint64
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// total cache disk capacity
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TotalCapacity uint64
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// indicates if usage is high or low, if high value is '1', if low its '0'
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UsageState int32
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// indicates the current usage percentage of this cache disk
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UsagePercent uint64
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Dir string
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}
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// GetUsageLevelString gets the string representation for the usage level.
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func (c *CacheDiskStats) GetUsageLevelString() (u string) {
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if atomic.LoadInt32(&c.UsageState) == 0 {
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return "low"
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}
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return "high"
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}
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// CacheStats - represents bytes served from cache,
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// cache hits and cache misses.
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type CacheStats struct {
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BytesServed uint64
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Hits uint64
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Misses uint64
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GetDiskStats func() []CacheDiskStats
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}
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// Increase total bytes served from cache
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func (s *CacheStats) incBytesServed(n int64) {
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atomic.AddUint64(&s.BytesServed, uint64(n))
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}
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// Increase cache hit by 1
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func (s *CacheStats) incHit() {
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atomic.AddUint64(&s.Hits, 1)
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}
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// Increase cache miss by 1
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func (s *CacheStats) incMiss() {
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atomic.AddUint64(&s.Misses, 1)
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}
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// Get total bytes served
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func (s *CacheStats) getBytesServed() uint64 {
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return atomic.LoadUint64(&s.BytesServed)
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}
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// Get total cache hits
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func (s *CacheStats) getHits() uint64 {
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return atomic.LoadUint64(&s.Hits)
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}
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// Get total cache misses
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func (s *CacheStats) getMisses() uint64 {
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return atomic.LoadUint64(&s.Misses)
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}
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// Prepare new CacheStats structure
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func newCacheStats() *CacheStats {
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return &CacheStats{}
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}
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