Support pause/unpause schedules

Support pause/unpause schedule

Fixes vmware-tanzu#2363

Signed-off-by: Wenkai Yin(尹文开) <yinw@vmware.com>

changelogs/unreleased/5279-ywk253100

@@ -0,0 +1 @@
+Support pause/unpause schedules

config/crd/v1/bases/velero.io_schedules.yaml

@@ -32,6 +32,9 @@ spec:
     - jsonPath: .metadata.creationTimestamp
       name: Age
       type: date
+    - jsonPath: .spec.paused
+      name: Paused
+      type: boolean
     name: v1
     schema:
       openAPIV3Schema:
@@ -53,6 +56,9 @@ spec:
           spec:
             description: ScheduleSpec defines the specification for a Velero schedule
             properties:
+              paused:
+                description: Paused specifies whether the schedule is paused or not
+                type: boolean
               schedule:
                 description: Schedule is a Cron expression defining when to run the
                   Backup.

pkg/apis/velero/v1/schedule_types.go

@@ -38,6 +38,10 @@ type ScheduleSpec struct {
 	// +optional
 	// +nullable
 	UseOwnerReferencesInBackup *bool `json:"useOwnerReferencesInBackup,omitempty"`
+
+	// Paused specifies whether the schedule is paused or not
+	// +optional
+	Paused bool `json:"paused,omitempty"`
 }
 
 // SchedulePhase is a string representation of the lifecycle phase
@@ -87,6 +91,7 @@ type ScheduleStatus struct {
 // +kubebuilder:printcolumn:name="Schedule",type="string",JSONPath=".spec.schedule",description="A Cron expression defining when to run the Backup"
 // +kubebuilder:printcolumn:name="LastBackup",type="date",JSONPath=".status.lastBackup",description="The last time a Backup was run for this schedule"
 // +kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp"
+// +kubebuilder:printcolumn:name="Paused",type="boolean",JSONPath=".spec.paused"
 
 // Schedule is a Velero resource that represents a pre-scheduled or
 // periodic Backup that should be run.

pkg/cmd/cli/delete_options.go

@@ -27,24 +27,20 @@ import (
 	"github.com/spf13/pflag"
 
 	"github.com/vmware-tanzu/velero/pkg/client"
-	"github.com/vmware-tanzu/velero/pkg/cmd/util/flag"
 	clientset "github.com/vmware-tanzu/velero/pkg/generated/clientset/versioned"
 )
 
 // DeleteOptions contains parameters used for deleting a restore.
 type DeleteOptions struct {
-	Names            []string
-	all              bool
-	Selector         flag.LabelSelector
-	Confirm          bool
-	Client           clientset.Interface
-	Namespace        string
-	singularTypeName string
+	*SelectOptions
+	Confirm   bool
+	Client    clientset.Interface
+	Namespace string
 }
 
 func NewDeleteOptions(singularTypeName string) *DeleteOptions {
 	o := &DeleteOptions{}
-	o.singularTypeName = singularTypeName
+	o.SelectOptions = NewSelectOptions("delete", singularTypeName)
 	return o
 }
 
@@ -56,32 +52,22 @@ func (o *DeleteOptions) Complete(f client.Factory, args []string) error {
 		return err
 	}
 	o.Client = client
-	o.Names = args
-	return nil
+	return o.SelectOptions.Complete(args)
 }
 
 // Validate validates the fields of the DeleteOptions struct.
 func (o *DeleteOptions) Validate(c *cobra.Command, f client.Factory, args []string) error {
 	if o.Client == nil {
 		return errors.New("Velero client is not set; unable to proceed")
 	}
-	var (
-		hasNames    = len(o.Names) > 0
-		hasAll      = o.all
-		hasSelector = o.Selector.LabelSelector != nil
-	)
-	if !xor(hasNames, hasAll, hasSelector) {
-		return errors.New("you must specify exactly one of: specific " + o.singularTypeName + " name(s), the --all flag, or the --selector flag")
-	}
 
-	return nil
+	return o.SelectOptions.Validate()
 }
 
 // BindFlags binds options for this command to flags.
 func (o *DeleteOptions) BindFlags(flags *pflag.FlagSet) {
 	flags.BoolVar(&o.Confirm, "confirm", o.Confirm, "Confirm deletion")
-	flags.BoolVar(&o.all, "all", o.all, "Delete all "+o.singularTypeName+"s")
-	flags.VarP(&o.Selector, "selector", "l", "Delete all "+o.singularTypeName+"s matching this label selector.")
+	o.SelectOptions.BindFlags(flags)
 }
 
 // GetConfirmation ensures that the user confirms the action before proceeding.

pkg/cmd/cli/schedule/create.go

@@ -82,6 +82,7 @@ type CreateOptions struct {
 	BackupOptions              *backup.CreateOptions
 	Schedule                   string
 	UseOwnerReferencesInBackup bool
+	Paused                     bool
 
 	labelSelector *metav1.LabelSelector
 }
@@ -96,6 +97,7 @@ func (o *CreateOptions) BindFlags(flags *pflag.FlagSet) {
 	o.BackupOptions.BindFlags(flags)
 	flags.StringVar(&o.Schedule, "schedule", o.Schedule, "A cron expression specifying a recurring schedule for this backup to run")
 	flags.BoolVar(&o.UseOwnerReferencesInBackup, "use-owner-references-in-backup", o.UseOwnerReferencesInBackup, "Specifies whether to use OwnerReferences on backups created by this Schedule. Notice: if set to true, when schedule is deleted, backups will be deleted too.")
+	flags.BoolVar(&o.Paused, "paused", o.Paused, "Specifies whether the newly created schedule is paused or not.")
 }
 
 func (o *CreateOptions) Validate(c *cobra.Command, args []string, f client.Factory) error {
@@ -149,6 +151,7 @@ func (o *CreateOptions) Run(c *cobra.Command, f client.Factory) error {
 			},
 			Schedule:                   o.Schedule,
 			UseOwnerReferencesInBackup: &o.UseOwnerReferencesInBackup,
+			Paused:                     o.Paused,
 		},
 	}
 

pkg/cmd/cli/schedule/pause.go

@@ -0,0 +1,122 @@
+/*
+Copyright The Velero Contributors.
+
+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 schedule
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	kubeerrs "k8s.io/apimachinery/pkg/util/errors"
+
+	velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
+	"github.com/vmware-tanzu/velero/pkg/client"
+	"github.com/vmware-tanzu/velero/pkg/cmd"
+	"github.com/vmware-tanzu/velero/pkg/cmd/cli"
+)
+
+// NewPauseCommand creates the command for pause
+func NewPauseCommand(f client.Factory, use string) *cobra.Command {
+	o := cli.NewSelectOptions("pause", "schedule")
+
+	c := &cobra.Command{
+		Use:   use,
+		Short: "Pause schedules",
+		Example: `  # Pause a schedule named "schedule-1".
+  velero schedule pause schedule-1
+
+  # Pause schedules named "schedule-1" and "schedule-2".
+  velero schedule pause schedule-1 schedule-2
+
+  # Pause all schedules labelled with "foo=bar".
+  velero schedule pause --selector foo=bar
+
+  # Pause all schedules.
+  velero schedule pause --all`,
+		Run: func(c *cobra.Command, args []string) {
+			cmd.CheckError(o.Complete(args))
+			cmd.CheckError(o.Validate())
+			cmd.CheckError(runPause(f, o, true))
+		},
+	}
+
+	o.BindFlags(c.Flags())
+
+	return c
+}
+
+func runPause(f client.Factory, o *cli.SelectOptions, paused bool) error {
+	client, err := f.Client()
+	if err != nil {
+		return err
+	}
+
+	var (
+		schedules []*velerov1api.Schedule
+		errs      []error
+	)
+	switch {
+	case len(o.Names) > 0:
+		for _, name := range o.Names {
+			schedule, err := client.VeleroV1().Schedules(f.Namespace()).Get(context.TODO(), name, metav1.GetOptions{})
+			if err != nil {
+				errs = append(errs, errors.WithStack(err))
+				continue
+			}
+			schedules = append(schedules, schedule)
+		}
+	default:
+		selector := labels.Everything().String()
+		if o.Selector.LabelSelector != nil {
+			selector = o.Selector.String()
+		}
+		res, err := client.VeleroV1().Schedules(f.Namespace()).List(context.TODO(), metav1.ListOptions{
+			LabelSelector: selector,
+		})
+		if err != nil {
+			errs = append(errs, errors.WithStack(err))
+		}
+
+		for i := range res.Items {
+			schedules = append(schedules, &res.Items[i])
+		}
+	}
+	if len(schedules) == 0 {
+		fmt.Println("No schedules found")
+		return nil
+	}
+
+	msg := "paused"
+	if !paused {
+		msg = "unpaused"
+	}
+	for _, schedule := range schedules {
+		if schedule.Spec.Paused == paused {
+			fmt.Printf("Schedule %s is already %s, skip\n", schedule.Name, msg)
+			continue
+		}
+		schedule.Spec.Paused = paused
+		if _, err := client.VeleroV1().Schedules(schedule.Namespace).Update(context.TODO(), schedule, metav1.UpdateOptions{}); err != nil {
+			return errors.Wrapf(err, "failed to update schedule %s", schedule.Name)
+		}
+		fmt.Printf("Schedule %s %s successfully\n", schedule.Name, msg)
+	}
+	return kubeerrs.NewAggregate(errs)
+}

pkg/cmd/cli/schedule/schedule.go

@@ -34,6 +34,8 @@ func NewCommand(f client.Factory) *cobra.Command {
 		NewGetCommand(f, "get"),
 		NewDescribeCommand(f, "describe"),
 		NewDeleteCommand(f, "delete"),
+		NewPauseCommand(f, "pause"),
+		NewUnpauseCommand(f, "unpause"),
 	)
 
 	return c

pkg/cmd/cli/schedule/unpause.go

@@ -0,0 +1,55 @@
+/*
+Copyright The Velero Contributors.
+
+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 schedule
+
+import (
+	"github.com/spf13/cobra"
+
+	"github.com/vmware-tanzu/velero/pkg/client"
+	"github.com/vmware-tanzu/velero/pkg/cmd"
+	"github.com/vmware-tanzu/velero/pkg/cmd/cli"
+)
+
+// NewUnpauseCommand creates the command for unpause
+func NewUnpauseCommand(f client.Factory, use string) *cobra.Command {
+	o := cli.NewSelectOptions("pause", "schedule")
+
+	c := &cobra.Command{
+		Use:   use,
+		Short: "Unpause schedules",
+		Example: `  # Unpause a schedule named "schedule-1".
+  velero schedule unpause schedule-1
+
+  # Unpause schedules named "schedule-1" and "schedule-2".
+  velero schedule unpause schedule-1 schedule-2
+
+  # Unpause all schedules labelled with "foo=bar".
+  velero schedule unpause --selector foo=bar
+
+  # Unpause all schedules.
+  velero schedule unpause --all`,
+		Run: func(c *cobra.Command, args []string) {
+			cmd.CheckError(o.Complete(args))
+			cmd.CheckError(o.Validate())
+			cmd.CheckError(runPause(f, o, false))
+		},
+	}
+
+	o.BindFlags(c.Flags())
+
+	return c
+}

pkg/cmd/cli/select_option.go

@@ -0,0 +1,69 @@
+/*
+Copyright The Velero Contributors.
+
+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 cli
+
+import (
+	"errors"
+	"strings"
+
+	"github.com/spf13/pflag"
+
+	"github.com/vmware-tanzu/velero/pkg/cmd/util/flag"
+)
+
+// SelectOptions defines the options for selecting resources
+type SelectOptions struct {
+	Names            []string
+	All              bool
+	Selector         flag.LabelSelector
+	CMD              string
+	SingularTypeName string
+}
+
+// NewSelectOptions creates a new option for selector
+func NewSelectOptions(cmd, singularTypeName string) *SelectOptions {
+	return &SelectOptions{
+		CMD:              cmd,
+		SingularTypeName: singularTypeName,
+	}
+}
+
+// Complete fills in the correct values for all the options.
+func (o *SelectOptions) Complete(args []string) error {
+	o.Names = args
+	return nil
+}
+
+// Validate validates the fields of the SelectOptions struct.
+func (o *SelectOptions) Validate() error {
+	var (
+		hasNames    = len(o.Names) > 0
+		hasAll      = o.All
+		hasSelector = o.Selector.LabelSelector != nil
+	)
+	if !xor(hasNames, hasAll, hasSelector) {
+		return errors.New("you must specify exactly one of: specific " + o.SingularTypeName + " name(s), the --all flag, or the --selector flag")
+	}
+
+	return nil
+}
+
+// BindFlags binds options for this command to flags.
+func (o *SelectOptions) BindFlags(flags *pflag.FlagSet) {
+	flags.BoolVar(&o.All, "all", o.All, strings.Title(o.CMD)+" all "+o.SingularTypeName+"s")
+	flags.VarP(&o.Selector, "selector", "l", strings.Title(o.CMD)+" all "+o.SingularTypeName+"s matching this label selector.")
+}