frostfs-node/cmd/frostfs-cli/modules/container/nodes.go

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package container
import (
"crypto/sha256"
internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
containerAPI "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
"github.com/spf13/cobra"
)
var short bool
var containerNodesCmd = &cobra.Command{
Use: "nodes",
Short: "Show nodes for container",
Long: "Show nodes taking part in a container at the current epoch.",
Run: func(cmd *cobra.Command, _ []string) {
cnr, pkey := getContainer(cmd)
if pkey == nil {
pkey = key.GetOrGenerate(cmd)
}
cli := internalclient.GetSDKClientByFlag(cmd, pkey, commonflags.RPC)
var prm internalclient.NetMapSnapshotPrm
prm.SetClient(cli)
resmap, err := internalclient.NetMapSnapshot(cmd.Context(), prm)
commonCmd.ExitOnErr(cmd, "unable to get netmap snapshot", err)
var id cid.ID
containerAPI.CalculateID(&id, cnr)
binCnr := make([]byte, sha256.Size)
id.Encode(binCnr)
policy := cnr.PlacementPolicy()
var cnrNodes [][]netmap.NodeInfo
cnrNodes, err = resmap.NetMap().ContainerNodes(policy, binCnr)
commonCmd.ExitOnErr(cmd, "could not build container nodes for given container: %w", err)
for i := range cnrNodes {
cmd.Printf("Descriptor #%d, REP %d:\n", i+1, policy.ReplicaNumberByIndex(i))
for j := range cnrNodes[i] {
commonCmd.PrettyPrintNodeInfo(cmd, cnrNodes[i][j], j, "\t", short)
}
}
},
}
func initContainerNodesCmd() {
commonflags.Init(containerNodesCmd)
flags := containerNodesCmd.Flags()
flags.StringVar(&containerID, commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
flags.StringVar(&containerPathFrom, fromFlag, "", fromFlagUsage)
flags.BoolVar(&short, "short", false, "Shortens output of node info")
}