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69 lines
1.6 KiB
69 lines
1.6 KiB
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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