github.com/emate/nomad@v0.8.2-wo-binpacking/command/acl_policy_list.go (about)

     1  package command
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  
     7  	"github.com/hashicorp/nomad/api"
     8  	"github.com/posener/complete"
     9  )
    10  
    11  type ACLPolicyListCommand struct {
    12  	Meta
    13  }
    14  
    15  func (c *ACLPolicyListCommand) Help() string {
    16  	helpText := `
    17  Usage: nomad acl policy list
    18  
    19    List is used to list available ACL policies.
    20  
    21  General Options:
    22  
    23    ` + generalOptionsUsage() + `
    24  
    25  List Options:
    26  
    27    -json
    28      Output the ACL policies in a JSON format.
    29  
    30    -t
    31      Format and display the ACL policies using a Go template.
    32  `
    33  
    34  	return strings.TrimSpace(helpText)
    35  }
    36  
    37  func (c *ACLPolicyListCommand) AutocompleteFlags() complete.Flags {
    38  	return mergeAutocompleteFlags(c.Meta.AutocompleteFlags(FlagSetClient),
    39  		complete.Flags{
    40  			"-json": complete.PredictNothing,
    41  			"-t":    complete.PredictAnything,
    42  		})
    43  }
    44  
    45  func (c *ACLPolicyListCommand) AutocompleteArgs() complete.Predictor {
    46  	return complete.PredictNothing
    47  }
    48  
    49  func (c *ACLPolicyListCommand) Synopsis() string {
    50  	return "List ACL policies"
    51  }
    52  
    53  func (c *ACLPolicyListCommand) Name() string { return "acl policy list" }
    54  
    55  func (c *ACLPolicyListCommand) Run(args []string) int {
    56  	var json bool
    57  	var tmpl string
    58  
    59  	flags := c.Meta.FlagSet(c.Name(), FlagSetClient)
    60  	flags.Usage = func() { c.Ui.Output(c.Help()) }
    61  	flags.BoolVar(&json, "json", false, "")
    62  	flags.StringVar(&tmpl, "t", "", "")
    63  
    64  	if err := flags.Parse(args); err != nil {
    65  		return 1
    66  	}
    67  
    68  	// Check that we got no arguments
    69  	args = flags.Args()
    70  	if l := len(args); l != 0 {
    71  		c.Ui.Error("This command takes no arguments")
    72  		c.Ui.Error(commandErrorText(c))
    73  		return 1
    74  	}
    75  
    76  	// Get the HTTP client
    77  	client, err := c.Meta.Client()
    78  	if err != nil {
    79  		c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err))
    80  		return 1
    81  	}
    82  
    83  	// Fetch info on the policy
    84  	policies, _, err := client.ACLPolicies().List(nil)
    85  	if err != nil {
    86  		c.Ui.Error(fmt.Sprintf("Error listing ACL policies: %s", err))
    87  		return 1
    88  	}
    89  
    90  	if json || len(tmpl) > 0 {
    91  		out, err := Format(json, tmpl, policies)
    92  		if err != nil {
    93  			c.Ui.Error(err.Error())
    94  			return 1
    95  		}
    96  
    97  		c.Ui.Output(out)
    98  		return 0
    99  	}
   100  
   101  	c.Ui.Output(formatPolicies(policies))
   102  	return 0
   103  }
   104  
   105  func formatPolicies(policies []*api.ACLPolicyListStub) string {
   106  	if len(policies) == 0 {
   107  		return "No policies found"
   108  	}
   109  
   110  	output := make([]string, 0, len(policies)+1)
   111  	output = append(output, fmt.Sprintf("Name|Description"))
   112  	for _, p := range policies {
   113  		output = append(output, fmt.Sprintf("%s|%s", p.Name, p.Description))
   114  	}
   115  
   116  	return formatList(output)
   117  }