airshipctl/cmd/config/get_context.go
Ian Howell 9ffc305392 Define a standard for creating commands
This commit cleans up the command constructors in an attempt to make the
codebase more uniform and approachable. This includes several refactors:

* Removed the FlagConstants - this makes the help messages and examples
  significantly more readable without needed to compile and run
  airshipctl
* Long help messages and examples are now constant
* Short, Long, and Examples all begin with a capitol letter
* Flag descriptions begin with a lowercase letter. This matches the flag
  description for the builtin "help" flag, making formatting uniform for
  all flags
* Removed redundant unit tests on non-leaf commands

This change also updates the documentation for the affected commands.

Change-Id: I8b9dcbfd9846b3deaab06dec17f80643dae78de9
2020-04-24 10:50:59 -05:00

96 lines
2.4 KiB
Go

/*
Copyright 2014 The Kubernetes Authors.
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 config
import (
"fmt"
"github.com/spf13/cobra"
"opendev.org/airship/airshipctl/pkg/config"
"opendev.org/airship/airshipctl/pkg/environment"
)
const (
getContextLong = `
Display information about contexts such as associated manifests, users, and clusters.
`
getContextExample = `
# List all contexts
airshipctl config get-context
# Display the current context
airshipctl config get-context --current
# Display a specific context
airshipctl config get-context exampleContext
`
)
// NewGetContextCommand creates a command for viewing cluster information
// defined in the airshipctl config file.
func NewGetContextCommand(rootSettings *environment.AirshipCTLSettings) *cobra.Command {
o := &config.ContextOptions{}
cmd := &cobra.Command{
Use: "get-context [NAME]",
Short: "Get context information from the airshipctl config",
Long: getContextLong[1:],
Example: getContextExample,
RunE: func(cmd *cobra.Command, args []string) error {
airconfig := rootSettings.Config
if len(args) == 1 {
o.Name = args[0]
}
if o.Name == "" && !o.CurrentContext {
contexts := airconfig.GetContexts()
if len(contexts) == 0 {
fmt.Fprintln(cmd.OutOrStdout(), "No Contexts found in the configuration.")
}
for _, context := range contexts {
fmt.Fprintln(cmd.OutOrStdout(), context.PrettyString())
}
return nil
}
if o.CurrentContext {
o.Name = airconfig.CurrentContext
}
context, err := airconfig.GetContext(o.Name)
if err != nil {
return err
}
fmt.Fprintln(cmd.OutOrStdout(), context.PrettyString())
return nil
},
}
addGetContextFlags(o, cmd)
return cmd
}
func addGetContextFlags(o *config.ContextOptions, cmd *cobra.Command) {
flags := cmd.Flags()
flags.BoolVar(
&o.CurrentContext,
"current",
false,
"get the current context")
}