[#1451] placement: Return copy of slice from container nodes cache
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Nodes from cache could be changed by traverser, if no objectID specified. So it is required to return copy of cache's slice. Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
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1 changed files with 11 additions and 2 deletions
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@ -3,6 +3,7 @@ package placement
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import (
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"crypto/sha256"
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"fmt"
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"slices"
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"sync"
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cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
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@ -44,7 +45,7 @@ func (c *ContainerNodesCache) ContainerNodes(nm *netmapSDK.NetMap, cnr cid.ID, p
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raw, ok := c.containerCache.Get(cnr)
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c.mtx.Unlock()
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if ok {
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return raw, nil
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return c.cloneResult(raw), nil
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}
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} else {
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c.lastEpoch = nm.Epoch()
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@ -65,5 +66,13 @@ func (c *ContainerNodesCache) ContainerNodes(nm *netmapSDK.NetMap, cnr cid.ID, p
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c.containerCache.Add(cnr, cn)
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}
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c.mtx.Unlock()
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return cn, nil
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return c.cloneResult(cn), nil
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}
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func (c *ContainerNodesCache) cloneResult(nodes [][]netmapSDK.NodeInfo) [][]netmapSDK.NodeInfo {
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result := make([][]netmapSDK.NodeInfo, len(nodes))
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for repIdx := range nodes {
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result[repIdx] = slices.Clone(nodes[repIdx])
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}
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return result
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}
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