github.com/zignig/go-ipfs@v0.0.0-20141111235910-c9e5fdf55a52/core/commands2/resolve.go (about)

     1  package commands
     2  
     3  import (
     4  	"errors"
     5  
     6  	cmds "github.com/jbenet/go-ipfs/commands"
     7  )
     8  
     9  var resolveCmd = &cmds.Command{
    10  	Description: "Gets the value currently published at an IPNS name",
    11  	Help: `IPNS is a PKI namespace, where names are the hashes of public keys, and
    12  the private key enables publishing new (signed) values. In resolve, the
    13  default value of <name> is your own identity public key.
    14  
    15  
    16  Examples:
    17  
    18  Resolve the value of your identity:
    19  
    20    > ipfs name resolve
    21    QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
    22  
    23  Resolve te value of another name:
    24  
    25    > ipfs name resolve QmbCMUZw6JFeZ7Wp9jkzbye3Fzp2GGcPgC3nmeUjfVF87n
    26    QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
    27  
    28  `,
    29  
    30  	Arguments: []cmds.Argument{
    31  		cmds.StringArg("name", false, false, "The IPNS name to resolve. Defaults to your node's peerID."),
    32  	},
    33  	Run: func(req cmds.Request) (interface{}, error) {
    34  
    35  		n := req.Context().Node
    36  		var name string
    37  
    38  		if n.Network == nil {
    39  			return nil, errNotOnline
    40  		}
    41  
    42  		if len(req.Arguments()) == 0 {
    43  			if n.Identity == nil {
    44  				return nil, errors.New("Identity not loaded!")
    45  			}
    46  			name = n.Identity.ID().String()
    47  
    48  		} else {
    49  			var ok bool
    50  			name, ok = req.Arguments()[0].(string)
    51  			if !ok {
    52  				return nil, errors.New("cast error")
    53  			}
    54  		}
    55  
    56  		output, err := n.Namesys.Resolve(name)
    57  		if err != nil {
    58  			return nil, err
    59  		}
    60  
    61  		return output, nil
    62  	},
    63  	Marshallers: map[cmds.EncodingType]cmds.Marshaller{
    64  		cmds.Text: func(res cmds.Response) ([]byte, error) {
    65  			output := res.Output().(string)
    66  			return []byte(output), nil
    67  		},
    68  	},
    69  }