github.com/SamarSidharth/kpt@v0.0.0-20231122062228-c7d747ae3ace/commands/alpha/rpkg/copy/command.go (about)

     1  // Copyright 2022 The kpt Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package copy
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  
    21  	"github.com/GoogleContainerTools/kpt/internal/docs/generated/rpkgdocs"
    22  	"github.com/GoogleContainerTools/kpt/internal/errors"
    23  	"github.com/GoogleContainerTools/kpt/internal/util/porch"
    24  	porchapi "github.com/GoogleContainerTools/kpt/porch/api/porch/v1alpha1"
    25  	"github.com/spf13/cobra"
    26  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    27  	"k8s.io/apimachinery/pkg/types"
    28  	"k8s.io/cli-runtime/pkg/genericclioptions"
    29  	"sigs.k8s.io/controller-runtime/pkg/client"
    30  )
    31  
    32  const (
    33  	command = "cmdrpkgcopy"
    34  )
    35  
    36  func NewCommand(ctx context.Context, rcg *genericclioptions.ConfigFlags) *cobra.Command {
    37  	return newRunner(ctx, rcg).Command
    38  }
    39  
    40  func newRunner(ctx context.Context, rcg *genericclioptions.ConfigFlags) *runner {
    41  	r := &runner{
    42  		ctx: ctx,
    43  		cfg: rcg,
    44  	}
    45  	r.Command = &cobra.Command{
    46  		Use:     "copy SOURCE_PACKAGE NAME",
    47  		Aliases: []string{"edit"},
    48  		Short:   rpkgdocs.CopyShort,
    49  		Long:    rpkgdocs.CopyShort + "\n" + rpkgdocs.CopyLong,
    50  		Example: rpkgdocs.CopyExamples,
    51  		PreRunE: r.preRunE,
    52  		RunE:    r.runE,
    53  		Hidden:  porch.HidePorchCommands,
    54  	}
    55  	r.Command.Flags().StringVar(&r.workspace, "workspace", "", "Workspace name of the copy of the package.")
    56  	r.Command.Flags().BoolVar(&r.replayStrategy, "replay-strategy", false, "Use replay strategy for creating new package revision.")
    57  	return r
    58  }
    59  
    60  type runner struct {
    61  	ctx     context.Context
    62  	cfg     *genericclioptions.ConfigFlags
    63  	client  client.Client
    64  	Command *cobra.Command
    65  
    66  	copy porchapi.PackageEditTaskSpec
    67  
    68  	workspace      string // Target package revision workspaceName
    69  	replayStrategy bool
    70  }
    71  
    72  func (r *runner) preRunE(_ *cobra.Command, args []string) error {
    73  	const op errors.Op = command + ".preRunE"
    74  	client, err := porch.CreateClientWithFlags(r.cfg)
    75  	if err != nil {
    76  		return errors.E(op, err)
    77  	}
    78  	r.client = client
    79  
    80  	if len(args) < 1 {
    81  		return errors.E(op, fmt.Errorf("SOURCE_PACKAGE is a required positional argument"))
    82  	}
    83  	if len(args) > 1 {
    84  		return errors.E(op, fmt.Errorf("too many arguments; SOURCE_PACKAGE is the only accepted positional arguments"))
    85  	}
    86  
    87  	r.copy.Source = &porchapi.PackageRevisionRef{
    88  		Name: args[0],
    89  	}
    90  	return nil
    91  }
    92  
    93  func (r *runner) runE(cmd *cobra.Command, _ []string) error {
    94  	const op errors.Op = command + ".runE"
    95  
    96  	revisionSpec, err := r.getPackageRevisionSpec()
    97  	if err != nil {
    98  		return errors.E(op, err)
    99  	}
   100  
   101  	pr := &porchapi.PackageRevision{
   102  		TypeMeta: metav1.TypeMeta{
   103  			Kind:       "PackageRevision",
   104  			APIVersion: porchapi.SchemeGroupVersion.Identifier(),
   105  		},
   106  		ObjectMeta: metav1.ObjectMeta{
   107  			Namespace: *r.cfg.Namespace,
   108  		},
   109  		Spec: *revisionSpec,
   110  	}
   111  	if err := r.client.Create(r.ctx, pr); err != nil {
   112  		return errors.E(op, err)
   113  	}
   114  	fmt.Fprintf(cmd.OutOrStdout(), "%s created\n", pr.Name)
   115  	return nil
   116  }
   117  
   118  func (r *runner) getPackageRevisionSpec() (*porchapi.PackageRevisionSpec, error) {
   119  	packageRevision := porchapi.PackageRevision{}
   120  	err := r.client.Get(r.ctx, types.NamespacedName{
   121  		Name:      r.copy.Source.Name,
   122  		Namespace: *r.cfg.Namespace,
   123  	}, &packageRevision)
   124  	if err != nil {
   125  		return nil, err
   126  	}
   127  
   128  	if r.workspace == "" {
   129  		return nil, fmt.Errorf("--workspace is required to specify workspace name")
   130  	}
   131  
   132  	spec := &porchapi.PackageRevisionSpec{
   133  		PackageName:    packageRevision.Spec.PackageName,
   134  		WorkspaceName:  porchapi.WorkspaceName(r.workspace),
   135  		RepositoryName: packageRevision.Spec.RepositoryName,
   136  	}
   137  
   138  	if len(packageRevision.Spec.Tasks) == 0 || !r.replayStrategy {
   139  		spec.Tasks = []porchapi.Task{
   140  			{
   141  				Type: porchapi.TaskTypeEdit,
   142  				Edit: &porchapi.PackageEditTaskSpec{
   143  					Source: &porchapi.PackageRevisionRef{
   144  						Name: packageRevision.Name,
   145  					},
   146  				},
   147  			},
   148  		}
   149  	} else {
   150  		spec.Tasks = packageRevision.Spec.Tasks
   151  	}
   152  	return spec, nil
   153  }