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cluster.go
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cluster.go
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package get
import (
"context"
"fmt"
"os"
"strings"
"time"
ekstypes "github.com/aws/aws-sdk-go-v2/service/eks/types"
"k8s.io/apimachinery/pkg/util/sets"
"github.com/weaveworks/eksctl/pkg/actions/cluster"
"github.com/weaveworks/eksctl/pkg/eks"
"github.com/weaveworks/eksctl/pkg/printers"
"github.com/kris-nova/logger"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
api "github.com/weaveworks/eksctl/pkg/apis/eksctl.io/v1alpha5"
"github.com/weaveworks/eksctl/pkg/ctl/cmdutils"
)
func getClusterCmd(cmd *cmdutils.Cmd) {
cfg := api.NewClusterConfig()
cmd.ClusterConfig = cfg
var listAllRegions bool
params := &getCmdParams{}
cmd.SetDescription("cluster", "Get cluster(s)", "", "clusters")
cmd.CobraCommand.RunE = func(_ *cobra.Command, args []string) error {
cmd.NameArg = cmdutils.GetNameArg(args)
return doGetCluster(cmd, params, listAllRegions)
}
cmd.FlagSetGroup.InFlagSet("General", func(fs *pflag.FlagSet) {
fs.StringVarP(&cfg.Metadata.Name, "name", "n", "", "EKS cluster name")
fs.BoolVarP(&listAllRegions, "all-regions", "A", false, "List clusters across all supported regions")
cmdutils.AddRegionFlag(fs, &cmd.ProviderConfig)
cmdutils.AddCommonFlagsForGetCmd(fs, ¶ms.chunkSize, ¶ms.output)
cmdutils.AddTimeoutFlag(fs, &cmd.ProviderConfig.WaitTimeout)
cmdutils.AddConfigFileFlag(fs, &cmd.ClusterConfigFile)
})
cmdutils.AddCommonFlagsForAWS(cmd, &cmd.ProviderConfig, false)
}
func doGetCluster(cmd *cmdutils.Cmd, params *getCmdParams, listAllRegions bool) error {
if err := cmdutils.NewGetClusterLoader(cmd).Load(); err != nil {
return err
}
cfg := cmd.ClusterConfig
regionGiven := cfg.Metadata.Region != "" // eks.New resets this field, so we need to check if it was set in the first place
if params.output != printers.TableType {
logger.Writer = os.Stderr
}
ctl, err := cmd.NewCtl()
if err != nil {
return err
}
if regionGiven && listAllRegions {
logger.Warning("--region=%s is ignored, as --all-regions is given", cfg.Metadata.Region)
}
if cfg.Metadata.Name != "" && cmd.NameArg != "" {
return cmdutils.ErrClusterFlagAndArg(cmd, cfg.Metadata.Name, cmd.NameArg)
}
if cmd.NameArg != "" {
cfg.Metadata.Name = cmd.NameArg
}
if cfg.Metadata.Name != "" && listAllRegions {
return fmt.Errorf("--all-regions is for listing all clusters, it must be used without cluster name flag/argument")
}
if params.output != printers.TableType {
// log warnings and errors to stdout
logger.Writer = os.Stderr
}
ctx := context.Background()
if cfg.Metadata.Name == "" {
return getAndPrinterClusters(ctx, cmd, ctl, params, listAllRegions)
}
return getAndPrintCluster(ctx, cmd, cfg, ctl, params)
}
func getAndPrinterClusters(ctx context.Context, cmd *cmdutils.Cmd, ctl *eks.ClusterProvider, params *getCmdParams, listAllRegions bool) error {
printer, err := printers.NewPrinter(params.output)
if err != nil {
return err
}
if params.output == printers.TableType {
addGetClustersSummaryTableColumns(printer.(*printers.TablePrinter))
}
clusters, err := cluster.GetClusters(ctx, ctl.AWSProvider, listAllRegions, params.chunkSize)
if err != nil {
return err
}
return printer.PrintObjWithKind("clusters", clusters, cmd.CobraCommand.OutOrStdout())
}
func addGetClustersSummaryTableColumns(printer *printers.TablePrinter) {
printer.AddColumn("NAME", func(c cluster.Description) string {
return c.Name
})
printer.AddColumn("REGION", func(c cluster.Description) string {
return c.Region
})
printer.AddColumn("EKSCTL CREATED", func(c cluster.Description) api.EKSCTLCreated {
return c.Owned
})
}
func getAndPrintCluster(ctx context.Context, cmd *cmdutils.Cmd, cfg *api.ClusterConfig, ctl *eks.ClusterProvider, params *getCmdParams) error {
printer, err := printers.NewPrinter(params.output)
if err != nil {
return err
}
if params.output == printers.TableType {
addGetClusterSummaryTableColumns(printer.(*printers.TablePrinter))
}
cluster, err := ctl.GetCluster(ctx, cfg.Metadata.Name)
if err != nil {
return err
}
return printer.PrintObjWithKind("clusters", []*ekstypes.Cluster{cluster}, cmd.CobraCommand.OutOrStdout())
}
func addGetClusterSummaryTableColumns(printer *printers.TablePrinter) {
printer.AddColumn("NAME", func(c *ekstypes.Cluster) string {
if c.Name == nil {
return "-"
}
return *c.Name
})
printer.AddColumn("VERSION", func(c *ekstypes.Cluster) string {
if c.Version == nil {
return "-"
}
return *c.Version
})
printer.AddColumn("STATUS", func(c *ekstypes.Cluster) string {
if c.Status == "" {
return "-"
}
return string(c.Status)
})
printer.AddColumn("CREATED", func(c *ekstypes.Cluster) string {
if c.CreatedAt == nil {
return "-"
}
return c.CreatedAt.Format(time.RFC3339)
})
printer.AddColumn("VPC", func(c *ekstypes.Cluster) string {
if c.ResourcesVpcConfig == nil {
return "-"
}
return *c.ResourcesVpcConfig.VpcId
})
printer.AddColumn("SUBNETS", func(c *ekstypes.Cluster) string {
if c.ResourcesVpcConfig == nil || c.ResourcesVpcConfig.SubnetIds == nil {
return "-"
}
subnets := sets.New[string]()
for _, subnetID := range c.ResourcesVpcConfig.SubnetIds {
subnets.Insert(subnetID)
}
return strings.Join(sets.List(subnets), ",")
})
printer.AddColumn("SECURITYGROUPS", func(c *ekstypes.Cluster) string {
if c.ResourcesVpcConfig == nil || c.ResourcesVpcConfig.SecurityGroupIds == nil {
return "-"
}
groups := sets.New[string]()
for _, sg := range c.ResourcesVpcConfig.SecurityGroupIds {
groups.Insert(sg)
}
return strings.Join(sets.List(groups), ",")
})
printer.AddColumn("PROVIDER", func(c *ekstypes.Cluster) string {
if c.ConnectorConfig != nil {
return *c.ConnectorConfig.Provider
}
return "EKS"
})
}