name

Documentation

Index

• Variables
• type IpnsEntry
• type ResolvedPath

Variables

var IpnsCmd = &cmds.Command{
	Helptext: cmdkit.HelpText{
		Tagline: "Resolve IPNS names.",
		ShortDescription: `
IPNS is a PKI namespace, where names are the hashes of public keys, and
the private key enables publishing new (signed) values. In both publish
and resolve, the default name used is the node's own PeerID,
which is the hash of its public key.
`,
		LongDescription: `
IPNS is a PKI namespace, where names are the hashes of public keys, and
the private key enables publishing new (signed) values. In both publish
and resolve, the default name used is the node's own PeerID,
which is the hash of its public key.

You can use the 'ipfs key' commands to list and generate more names and their
respective keys.

Examples:

Resolve the value of your name:

  > ipfs name resolve
  /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

Resolve the value of another name:

  > ipfs name resolve QmaCpDMGvV2BGHeYERUEnRQAwe3N8SzbUtfsmvsqQLuvuJ
  /ipfs/QmSiTko9JZyabH56y2fussEt1A5oDqsFXB3CkvAqraFryz

Resolve the value of a dnslink:

  > ipfs name resolve ipfs.io
  /ipfs/QmaBvfZooxWkrv7D3r8LS9moNjzD2o525XMZze69hhoxf5

`,
	},

	Arguments: []cmdkit.Argument{
		cmdkit.StringArg("name", false, false, "The IPNS name to resolve. Defaults to your node's peerID."),
	},
	Options: []cmdkit.Option{
		cmdkit.BoolOption(recursiveOptionName, "r", "Resolve until the result is not an IPNS name."),
		cmdkit.BoolOption(nocacheOptionName, "n", "Do not use cached entries."),
		cmdkit.UintOption(dhtRecordCountOptionName, "dhtrc", "Number of records to request for DHT resolution."),
		cmdkit.StringOption(dhtTimeoutOptionName, "dhtt", "Max time to collect values during DHT resolution eg \"30s\". Pass 0 for no timeout."),
		cmdkit.BoolOption(streamOptionName, "s", "Stream entries as they are found."),
	},
	Run: func(req *cmds.Request, res cmds.ResponseEmitter, env cmds.Environment) error {
		api, err := cmdenv.GetApi(env, req)
		if err != nil {
			return err
		}

		nocache, _ := req.Options["nocache"].(bool)

		var name string
		if len(req.Arguments) == 0 {
			self, err := api.Key().Self(req.Context)
			if err != nil {
				return err
			}
			name = self.ID().Pretty()
		} else {
			name = req.Arguments[0]
		}

		recursive, _ := req.Options[recursiveOptionName].(bool)
		rc, rcok := req.Options[dhtRecordCountOptionName].(int)
		dhtt, dhttok := req.Options[dhtTimeoutOptionName].(string)
		stream, _ := req.Options[streamOptionName].(bool)

		opts := []options.NameResolveOption{
			options.Name.Cache(!nocache),
		}

		if !recursive {
			opts = append(opts, options.Name.ResolveOption(nsopts.Depth(1)))
		}
		if rcok {
			opts = append(opts, options.Name.ResolveOption(nsopts.DhtRecordCount(uint(rc))))
		}
		if dhttok {
			d, err := time.ParseDuration(dhtt)
			if err != nil {
				return err
			}
			if d < 0 {
				return errors.New("DHT timeout value must be >= 0")
			}
			opts = append(opts, options.Name.ResolveOption(nsopts.DhtTimeout(d)))
		}

		if !strings.HasPrefix(name, "/ipns/") {
			name = "/ipns/" + name
		}

		if !stream {
			output, err := api.Name().Resolve(req.Context, name, opts...)
			if err != nil {
				return err
			}

			return cmds.EmitOnce(res, &ResolvedPath{path.FromString(output.String())})
		}

		output, err := api.Name().Search(req.Context, name, opts...)
		if err != nil {
			return err
		}

		for v := range output {
			if v.Err != nil {
				return err
			}
			if err := res.Emit(&ResolvedPath{path.FromString(v.Path.String())}); err != nil {
				return err
			}

		}

		return nil
	},
	Encoders: cmds.EncoderMap{
		cmds.Text: cmds.MakeTypedEncoder(func(req *cmds.Request, w io.Writer, rp *ResolvedPath) error {
			_, err := fmt.Fprintln(w, rp.Path)
			return err
		}),
	},
	Type: ResolvedPath{},
}

var IpnsPubsubCmd = &cmds.Command{
	Helptext: cmdkit.HelpText{
		Tagline: "IPNS pubsub management",
		ShortDescription: `
Manage and inspect the state of the IPNS pubsub resolver.

Note: this command is experimental and subject to change as the system is refined
`,
	},
	Subcommands: map[string]*cmds.Command{
		"state":  ipnspsStateCmd,
		"subs":   ipnspsSubsCmd,
		"cancel": ipnspsCancelCmd,
	},
}

ipnsSubCmd是允许我们管理ipns pubsub系统的子命令。

var NameCmd = &cmds.Command{
	Helptext: cmdkit.HelpText{
		Tagline: "Publish and resolve IPNS names.",
		ShortDescription: `
IPNS is a PKI namespace, where names are the hashes of public keys, and
the private key enables publishing new (signed) values. In both publish
and resolve, the default name used is the node's own PeerID,
which is the hash of its public key.
`,
		LongDescription: `
IPNS is a PKI namespace, where names are the hashes of public keys, and
the private key enables publishing new (signed) values. In both publish
and resolve, the default name used is the node's own PeerID,
which is the hash of its public key.

You can use the 'ipfs key' commands to list and generate more names and their
respective keys.

Examples:

Publish an <ipfs-path> with your default name:

  > ipfs name publish /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
  Published to QmbCMUZw6JFeZ7Wp9jkzbye3Fzp2GGcPgC3nmeUjfVF87n: /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

Publish an <ipfs-path> with another name, added by an 'ipfs key' command:

  > ipfs key gen --type=rsa --size=2048 mykey
  > ipfs name publish --key=mykey /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
  Published to QmSrPmbaUKA3ZodhzPWZnpFgcPMFWF4QsxXbkWfEptTBJd: /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

Resolve the value of your name:

  > ipfs name resolve
  /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

Resolve the value of another name:

  > ipfs name resolve QmaCpDMGvV2BGHeYERUEnRQAwe3N8SzbUtfsmvsqQLuvuJ
  /ipfs/QmSiTko9JZyabH56y2fussEt1A5oDqsFXB3CkvAqraFryz

Resolve the value of a dnslink:

  > ipfs name resolve ipfs.io
  /ipfs/QmaBvfZooxWkrv7D3r8LS9moNjzD2o525XMZze69hhoxf5

`,
	},

	Subcommands: map[string]*cmds.Command{
		"publish": PublishCmd,
		"resolve": IpnsCmd,
		"pubsub":  IpnsPubsubCmd,
	},
}

var PublishCmd = &cmds.Command{
	Helptext: cmdkit.HelpText{
		Tagline: "Publish IPNS names.",
		ShortDescription: `
IPNS is a PKI namespace, where names are the hashes of public keys, and
the private key enables publishing new (signed) values. In both publish
and resolve, the default name used is the node's own PeerID,
which is the hash of its public key.
`,
		LongDescription: `
IPNS is a PKI namespace, where names are the hashes of public keys, and
the private key enables publishing new (signed) values. In both publish
and resolve, the default name used is the node's own PeerID,
which is the hash of its public key.

You can use the 'ipfs key' commands to list and generate more names and their
respective keys.

Examples:

Publish an <ipfs-path> with your default name:

  > ipfs name publish /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
  Published to QmbCMUZw6JFeZ7Wp9jkzbye3Fzp2GGcPgC3nmeUjfVF87n: /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

Publish an <ipfs-path> with another name, added by an 'ipfs key' command:

  > ipfs key gen --type=rsa --size=2048 mykey
  > ipfs name publish --key=mykey /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
  Published to QmSrPmbaUKA3ZodhzPWZnpFgcPMFWF4QsxXbkWfEptTBJd: /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

Alternatively, publish an <ipfs-path> using a valid PeerID (as listed by 
'ipfs key list -l'):

 > ipfs name publish --key=QmbCMUZw6JFeZ7Wp9jkzbye3Fzp2GGcPgC3nmeUjfVF87n /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy
  Published to QmbCMUZw6JFeZ7Wp9jkzbye3Fzp2GGcPgC3nmeUjfVF87n: /ipfs/QmatmE9msSfkKxoffpHwNLNKgwZG8eT9Bud6YoPab52vpy

`,
	},

	Arguments: []cmdkit.Argument{
		cmdkit.StringArg(ipfsPathOptionName, true, false, "ipfs path of the object to be published.").EnableStdin(),
	},
	Options: []cmdkit.Option{
		cmdkit.BoolOption(resolveOptionName, "Resolve given path before publishing.").WithDefault(true),
		cmdkit.StringOption(lifeTimeOptionName, "t",
			`Time duration that the record will be valid for. <<default>>
    This accepts durations such as "300s", "1.5h" or "2h45m". Valid time units are
    "ns", "us" (or "µs"), "ms", "s", "m", "h".`).WithDefault("24h"),
		cmdkit.BoolOption(allowOfflineOptionName, "When offline, save the IPNS record to the the local datastore without broadcasting to the network instead of simply failing."),
		cmdkit.StringOption(ttlOptionName, "Time duration this record should be cached for (caution: experimental)."),
		cmdkit.StringOption(keyOptionName, "k", "Name of the key to be used or a valid PeerID, as listed by 'ipfs key list -l'. Default: <<default>>.").WithDefault("self"),
		cmdkit.BoolOption(quieterOptionName, "Q", "Write only final hash."),
	},
	Run: func(req *cmds.Request, res cmds.ResponseEmitter, env cmds.Environment) error {
		api, err := cmdenv.GetApi(env, req)
		if err != nil {
			return err
		}

		allowOffline, _ := req.Options[allowOfflineOptionName].(bool)
		kname, _ := req.Options[keyOptionName].(string)

		validTimeOpt, _ := req.Options[lifeTimeOptionName].(string)
		validTime, err := time.ParseDuration(validTimeOpt)
		if err != nil {
			return fmt.Errorf("error parsing lifetime option: %s", err)
		}

		opts := []options.NamePublishOption{
			options.Name.AllowOffline(allowOffline),
			options.Name.Key(kname),
			options.Name.ValidTime(validTime),
		}

		if ttl, found := req.Options[ttlOptionName].(string); found {
			d, err := time.ParseDuration(ttl)
			if err != nil {
				return err
			}

			opts = append(opts, options.Name.TTL(d))
		}

		p, err := iface.ParsePath(req.Arguments[0])
		if err != nil {
			return err
		}

		if verifyExists, _ := req.Options[resolveOptionName].(bool); verifyExists {
			_, err := api.ResolveNode(req.Context, p)
			if err != nil {
				return err
			}
		}

		out, err := api.Name().Publish(req.Context, p, opts...)
		if err != nil {
			if err == iface.ErrOffline {
				err = errAllowOffline
			}
			return err
		}

		return cmds.EmitOnce(res, &IpnsEntry{
			Name:  out.Name(),
			Value: out.Value().String(),
		})
	},
	Encoders: cmds.EncoderMap{
		cmds.Text: cmds.MakeTypedEncoder(func(req *cmds.Request, w io.Writer, ie *IpnsEntry) error {
			var err error
			quieter, _ := req.Options[quieterOptionName].(bool)
			if quieter {
				_, err = fmt.Fprintln(w, ie.Name)
			} else {
				_, err = fmt.Fprintf(w, "Published to %s: %s\n", ie.Name, ie.Value)
			}
			return err
		}),
	},
	Type: IpnsEntry{},
}

Types

type IpnsEntry

type IpnsEntry struct {
	Name  string
	Value string
}

type ResolvedPath

type ResolvedPath struct {
	Path path.Path
}