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Add type conversion judgment

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This commit is contained in:
yiqinguo 2017-06-22 20:17:28 +08:00
parent c3dd67dc21
commit d170b0ca80
1 changed files with 4 additions and 1 deletions
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5
pkg/kubelet/dockershim/docker_service.go
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@ -455,10 +455,13 @@ func (ds *dockerService) getDockerVersionFromCache() (*dockertypes.Version, erro
// We only store on key in the cache. // We only store on key in the cache.
const dummyKey = "version" const dummyKey = "version"
value, err := ds.versionCache.Get(dummyKey) value, err := ds.versionCache.Get(dummyKey)
dv := value.(*dockertypes.Version)
if err != nil { if err != nil {
return nil, err return nil, err
} }
dv, ok := value.(*dockertypes.Version)
if !ok {
return nil, fmt.Errorf("Converted to *dockertype.Version error")
}
return dv, nil return dv, nil
} }