github.com/souleb/helm@v3.0.0-beta.3+incompatible/cmd/helm/plugin_update.go (about)

     1  /*
     2  Copyright The Helm Authors.
     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  
    16  package main
    17  
    18  import (
    19  	"fmt"
    20  	"io"
    21  	"path/filepath"
    22  	"strings"
    23  
    24  	"github.com/pkg/errors"
    25  	"github.com/spf13/cobra"
    26  
    27  	"helm.sh/helm/pkg/plugin"
    28  	"helm.sh/helm/pkg/plugin/installer"
    29  )
    30  
    31  type pluginUpdateOptions struct {
    32  	names []string
    33  }
    34  
    35  func newPluginUpdateCmd(out io.Writer) *cobra.Command {
    36  	o := &pluginUpdateOptions{}
    37  	cmd := &cobra.Command{
    38  		Use:   "update <plugin>...",
    39  		Short: "update one or more Helm plugins",
    40  		PreRunE: func(cmd *cobra.Command, args []string) error {
    41  			return o.complete(args)
    42  		},
    43  		RunE: func(cmd *cobra.Command, args []string) error {
    44  			return o.run(out)
    45  		},
    46  	}
    47  	return cmd
    48  }
    49  
    50  func (o *pluginUpdateOptions) complete(args []string) error {
    51  	if len(args) == 0 {
    52  		return errors.New("please provide plugin name to update")
    53  	}
    54  	o.names = args
    55  	return nil
    56  }
    57  
    58  func (o *pluginUpdateOptions) run(out io.Writer) error {
    59  	installer.Debug = settings.Debug
    60  	debug("loading installed plugins from %s", settings.PluginsDirectory)
    61  	plugins, err := findPlugins(settings.PluginsDirectory)
    62  	if err != nil {
    63  		return err
    64  	}
    65  	var errorPlugins []string
    66  
    67  	for _, name := range o.names {
    68  		if found := findPlugin(plugins, name); found != nil {
    69  			if err := updatePlugin(found); err != nil {
    70  				errorPlugins = append(errorPlugins, fmt.Sprintf("Failed to update plugin %s, got error (%v)", name, err))
    71  			} else {
    72  				fmt.Fprintf(out, "Updated plugin: %s\n", name)
    73  			}
    74  		} else {
    75  			errorPlugins = append(errorPlugins, fmt.Sprintf("Plugin: %s not found", name))
    76  		}
    77  	}
    78  	if len(errorPlugins) > 0 {
    79  		return errors.Errorf(strings.Join(errorPlugins, "\n"))
    80  	}
    81  	return nil
    82  }
    83  
    84  func updatePlugin(p *plugin.Plugin) error {
    85  	exactLocation, err := filepath.EvalSymlinks(p.Dir)
    86  	if err != nil {
    87  		return err
    88  	}
    89  	absExactLocation, err := filepath.Abs(exactLocation)
    90  	if err != nil {
    91  		return err
    92  	}
    93  
    94  	i, err := installer.FindSource(absExactLocation)
    95  	if err != nil {
    96  		return err
    97  	}
    98  	if err := installer.Update(i); err != nil {
    99  		return err
   100  	}
   101  
   102  	debug("loading plugin from %s", i.Path())
   103  	updatedPlugin, err := plugin.LoadDir(i.Path())
   104  	if err != nil {
   105  		return err
   106  	}
   107  
   108  	return runHook(updatedPlugin, plugin.Update)
   109  }