70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
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package dao
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import (
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"context"
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"encoding/json"
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"fmt"
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mc "go-common/library/cache/memcache"
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"go-common/library/log"
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)
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const (
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_docKeyPrefix = "d"
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)
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// pingMemcache check memcache health
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func (d *Dao) pingMemcache(ctx context.Context) (err error) {
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conn := d.cache.Get(ctx)
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item := mc.Item{Key: "ping", Value: []byte{1}, Expiration: d.mcExpire}
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err = conn.Set(&item)
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conn.Close()
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return
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}
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// DocumentCache memcache get document(hash)
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func (d *Dao) DocumentCache(ctx context.Context, checkSum int64) (data json.RawMessage, err error) {
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var result *mc.Item
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conn := d.cache.Get(ctx)
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defer conn.Close()
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if result, err = conn.Get(cacheDocKey(checkSum)); err != nil {
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if err == mc.ErrNotFound {
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err = nil
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return
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}
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log.Error("conn.Get(%s) error(%v)", cacheDocKey(checkSum), err)
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return
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}
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data = json.RawMessage(result.Value)
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return
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}
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// DelDocumentCache remove memcache document detail
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func (d *Dao) DelDocumentCache(ctx context.Context, checkSum int64) (err error) {
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conn := d.cache.Get(ctx)
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defer conn.Close()
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if err = conn.Delete(cacheDocKey(checkSum)); err == mc.ErrNotFound {
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err = nil
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}
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return
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}
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// SetDocumentCache add document cache
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func (d *Dao) SetDocumentCache(ctx context.Context, checkSum int64, data json.RawMessage) (err error) {
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conn := d.cache.Get(ctx)
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defer conn.Close()
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if err = conn.Set(&mc.Item{
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Key: cacheDocKey(checkSum),
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Value: data,
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Expiration: d.mcExpire,
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}); err != nil {
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log.Error("dao.SetDocumentCache(%v,%s) err:%v", cacheDocKey(checkSum), data, err)
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return
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}
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return
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}
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func cacheDocKey(checkSum int64) string {
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return fmt.Sprintf("%v_%v", _docKeyPrefix, checkSum)
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}
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