mirror of https://github.com/BTCPrivate/lnd.git
116 lines
3.3 KiB
Go
116 lines
3.3 KiB
Go
package lnwire
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import (
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"fmt"
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"io"
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)
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// ChannelPoint represents a unique state update within currently active
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// channel. A channel update across all open chnnels can be uniquely identified
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// by a two-tuple: (fundingTXID, HTLCKey). All explicit updates to an open
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// channel will reference a ChannelPoint to apply the update to.
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type ChannelPoint struct {
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// ChannelID references the particular active channel to which this
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// HTLCAddReject message is binded to.
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ChannelID uint64
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// HTLCKey is used to identify which HTLC previously attempted to be
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// added via an HTLCAddRequest message is being declined.
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HTLCKey HTLCKey
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}
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// HTLCAddReject is sent by Bob when he wishes to reject a particular HTLC that
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// Alice attempted to add via an HTLCAddRequest message. The rejected HTLC is
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// referenced by its unique HTLCKey ID. An HTLCAddReject message is bound to a
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// single active channel, referenced by a unique ChannelID. Additionally, the
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// HTLCKey of the rejected HTLC is present
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type HTLCAddReject struct {
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// ChannelID references the particular active channel to which this
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// HTLCAddReject message is binded to.
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ChannelID uint64
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// HTLCKey is used to identify which HTLC previously attempted to be
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// added via an HTLCAddRequest message is being declined.
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HTLCKey HTLCKey
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}
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// Decode deserializes a serialized HTLCAddReject message stored in the passed
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// io.Reader observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (c *HTLCAddReject) Decode(r io.Reader, pver uint32) error {
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// ChannelID (8)
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// HTLCKey (8)
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err := readElements(r,
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&c.ChannelID,
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&c.HTLCKey,
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)
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if err != nil {
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return err
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}
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return nil
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}
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// NewHTLCAddReject returns a new empty HTLCAddReject message.
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func NewHTLCAddReject() *HTLCAddReject {
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return &HTLCAddReject{}
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}
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// A compile time check to ensure HTLCAddReject implements the lnwire.Message
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// interface.
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var _ Message = (*HTLCAddReject)(nil)
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// Encode serializes the target HTLCAddReject into the passed io.Writer observing
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// the protocol version specified.
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//
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// This is part of the lnwire.Message interface.
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func (c *HTLCAddReject) Encode(w io.Writer, pver uint32) error {
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err := writeElements(w,
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c.ChannelID,
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c.HTLCKey,
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)
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if err != nil {
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return err
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}
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return nil
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}
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// Command returns the integer uniquely identifying this message type on the
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// wire.
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//
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// This is part of the lnwire.Message interface.
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func (c *HTLCAddReject) Command() uint32 {
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return CmdHTLCAddReject
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}
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// MaxPayloadLength returns the maximum allowed payload size for a HTLCAddReject
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// complete message observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (c *HTLCAddReject) MaxPayloadLength(uint32) uint32 {
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// 8 + 8
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return 16
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}
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// Validate performs any necessary sanity checks to ensure all fields present
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// on the HTLCAddReject are valid.
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//
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// This is part of the lnwire.Message interface.
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func (c *HTLCAddReject) Validate() error {
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// We're good!
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return nil
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}
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// String returns the string representation of the target HTLCAddReject.
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//
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// This is part of the lnwire.Message interface.
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func (c *HTLCAddReject) String() string {
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return fmt.Sprintf("\n--- Begin HTLCAddReject ---\n") +
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fmt.Sprintf("ChannelID:\t\t%d\n", c.ChannelID) +
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fmt.Sprintf("HTLCKey:\t\t%d\n", c.HTLCKey) +
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fmt.Sprintf("--- End HTLCAddReject ---\n")
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}
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