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deploy: support for read affinity options per cluster

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Implemented the capability to include read affinity options
for individual clusters within the ceph-csi-config ConfigMap.
This allows users to configure the crush location for each
cluster separately. The read affinity options specified in
the ConfigMap will supersede those provided via command line arguments.

Signed-off-by: Praveen M <m.praveen@ibm.com>
This commit is contained in:
Praveen M
2023-10-30 13:53:12 +05:30
committed by mergify[bot]
parent 93f2ed681f
commit c4e373c72f
12 changed files with 338 additions and 99 deletions
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23
internal/util/csiconfig.go
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@ -62,6 +62,11 @@ type ClusterInfo struct {
// symlink filepath for the network namespace where we need to execute commands.
NetNamespaceFilePath string `json:"netNamespaceFilePath"`
} `json:"nfs"`
// Read affinity map options
ReadAffinity struct {
Enabled bool `json:"enabled"`
CrushLocationLabels []string `json:"crushLocationLabels"`
} `json:"readAffinity"`
}
// Expected JSON structure in the passed in config file is,
@ -203,3 +208,21 @@ func GetNFSNetNamespaceFilePath(pathToConfig, clusterID string) (string, error)
return cluster.NFS.NetNamespaceFilePath, nil
}
// GetCrushLocationLabels returns the `readAffinity.enabled` and `readAffinity.crushLocationLabels`
// values from the CSI config for the given `clusterID`. If `readAffinity.enabled` is set to true
// it returns `true` and `crushLocationLabels`, else returns `false` and an empty string.
func GetCrushLocationLabels(pathToConfig, clusterID string) (bool, string, error) {
cluster, err := readClusterInfo(pathToConfig, clusterID)
if err != nil {
return false, "", err
}
if !cluster.ReadAffinity.Enabled {
return false, "", nil
}
crushLocationLabels := strings.Join(cluster.ReadAffinity.CrushLocationLabels, ",")
return true, crushLocationLabels, nil
}