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refactor: reimplement delete cmd for cluster delete (GreptimeTeam#179)
* implement k8s delete api and decouple the set values config logic Signed-off-by: sh2 <[email protected]> * implement bare-metal delete api Signed-off-by: sh2 <[email protected]> --------- Signed-off-by: sh2 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // Copyright 2023 Greptime Team | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/spf13/cobra" | ||
|
|
||
| opt "github.com/GreptimeTeam/gtctl/pkg/cluster" | ||
| "github.com/GreptimeTeam/gtctl/pkg/cluster/baremetal" | ||
| "github.com/GreptimeTeam/gtctl/pkg/cluster/kubernetes" | ||
| "github.com/GreptimeTeam/gtctl/pkg/logger" | ||
| ) | ||
|
|
||
| type clusterDeleteOptions struct { | ||
| Namespace string | ||
| TearDownEtcd bool | ||
|
|
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| // The options for deleting GreptimeDB cluster in bare-metal. | ||
| BareMetal bool | ||
| } | ||
|
|
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| func NewDeleteClusterCommand(l logger.Logger) *cobra.Command { | ||
| var options clusterDeleteOptions | ||
|
|
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| cmd := &cobra.Command{ | ||
| Use: "delete", | ||
| Short: "Delete a GreptimeDB cluster", | ||
| Long: `Delete a GreptimeDB cluster`, | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| if len(args) == 0 { | ||
| return fmt.Errorf("cluster name should be set") | ||
| } | ||
|
|
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| clusterName := args[0] | ||
| var ( | ||
| cluster opt.Operations | ||
| err error | ||
| ctx = context.TODO() | ||
| ) | ||
|
|
||
| if options.BareMetal { | ||
| cluster, err = baremetal.NewCluster(l, clusterName, baremetal.WithCreateNoDirs()) | ||
| } else { | ||
| cluster, err = kubernetes.NewCluster(l) | ||
| } | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| deleteOptions := &opt.DeleteOptions{ | ||
| Namespace: options.Namespace, | ||
| Name: clusterName, | ||
| } | ||
| return cluster.Delete(ctx, deleteOptions) | ||
| }, | ||
| } | ||
|
|
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| cmd.Flags().StringVarP(&options.Namespace, "namespace", "n", "default", "Namespace of GreptimeDB cluster.") | ||
| cmd.Flags().BoolVar(&options.TearDownEtcd, "tear-down-etcd", false, "Tear down etcd cluster.") | ||
| cmd.Flags().BoolVar(&options.BareMetal, "bare-metal", false, "Get the greptimedb cluster on bare-metal environment.") | ||
|
|
||
| return cmd | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| // Copyright 2023 Greptime Team | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package baremetal | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "os" | ||
| "syscall" | ||
|
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| opt "github.com/GreptimeTeam/gtctl/pkg/cluster" | ||
| fileutils "github.com/GreptimeTeam/gtctl/pkg/utils/file" | ||
| ) | ||
|
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| func (c *Cluster) Delete(ctx context.Context, options *opt.DeleteOptions) error { | ||
| cluster, err := c.get(ctx, &opt.GetOptions{Name: options.Name}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| running, ferr, serr := c.isClusterRunning(cluster.ForegroundPid) | ||
| if ferr != nil { | ||
| return fmt.Errorf("error checking whether cluster '%s' is running: %v", options.Name, ferr) | ||
| } | ||
| if running || serr == nil { | ||
| return fmt.Errorf("cluster '%s' is running, please stop it before deleting", options.Name) | ||
| } | ||
|
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| csd := c.mm.GetClusterScopeDirs() | ||
| c.logger.V(0).Infof("Deleting cluster configurations and runtime directories in %s", csd.BaseDir) | ||
| if err = c.delete(ctx, csd.BaseDir); err != nil { | ||
| return err | ||
| } | ||
| c.logger.V(0).Info("Deleted!") | ||
|
|
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| return nil | ||
| } | ||
|
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| func (c *Cluster) delete(_ context.Context, baseDir string) error { | ||
| return fileutils.DeleteDirIfExists(baseDir) | ||
| } | ||
|
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| // isClusterRunning checks the current status of cluster by sending signal to process. | ||
| func (c *Cluster) isClusterRunning(pid int) (runs bool, f error, s error) { | ||
| p, f := os.FindProcess(pid) | ||
| if f != nil { | ||
| return false, f, nil | ||
| } | ||
|
|
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| s = p.Signal(syscall.Signal(0)) | ||
| if s != nil { | ||
| return false, nil, s | ||
| } | ||
|
|
||
| return true, nil, nil | ||
| } |
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