node pools: implement CLI (#17388)

command/node_pool_delete.go

@@ -0,0 +1,86 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+package command
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/go-set"
+	"github.com/hashicorp/nomad/api"
+	"github.com/posener/complete"
+)
+
+type NodePoolDeleteCommand struct {
+	Meta
+}
+
+func (c *NodePoolDeleteCommand) Name() string {
+	return "node pool delete"
+}
+
+func (c *NodePoolDeleteCommand) Synopsis() string {
+	return "Delete a node pool"
+}
+
+func (c *NodePoolDeleteCommand) Help() string {
+	helpText := `
+Usage: nomad node pool delete [options] <node-pool>
+
+  Delete is used to remove a node pool.
+
+  If ACLs are enabled, this command requires a token with the 'delete'
+  capability in a 'node_pool' policy that matches the node pool being targeted.
+
+General Options:
+
+  ` + generalOptionsUsage(usageOptsDefault)
+
+	return strings.TrimSpace(helpText)
+}
+
+func (c *NodePoolDeleteCommand) AutocompleteFlags() complete.Flags {
+	return c.Meta.AutocompleteFlags(FlagSetClient)
+}
+
+func (c *NodePoolDeleteCommand) AutocompleteArgs() complete.Predictor {
+	return nodePoolPredictor(c.Client, set.From([]string{
+		api.NodePoolAll,
+		api.NodePoolDefault,
+	}))
+}
+
+func (c *NodePoolDeleteCommand) Run(args []string) int {
+	flags := c.Meta.FlagSet(c.Name(), FlagSetClient)
+	flags.Usage = func() { c.Ui.Output(c.Help()) }
+
+	if err := flags.Parse(args); err != nil {
+		return 1
+	}
+
+	// Check that we only have one argument.
+	args = flags.Args()
+	if len(args) != 1 {
+		c.Ui.Error("This command takes one argument: <node-pool>")
+		c.Ui.Error(commandErrorText(c))
+		return 1
+	}
+	pool := args[0]
+
+	// Make API equest.
+	client, err := c.Meta.Client()
+	if err != nil {
+		c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err))
+		return 1
+	}
+
+	_, err = client.NodePools().Delete(pool, nil)
+	if err != nil {
+		c.Ui.Error(fmt.Sprintf("Error deleting node pool: %s", err))
+		return 1
+	}
+
+	c.Ui.Output(fmt.Sprintf("Successfully deleted node pool %q!", pool))
+	return 0
+}