12199391122

Committed 06 Dec 2024 01:10PM UTC coverage: 49.807% (-9.1%) from 58.933%

Build # 12199391122

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push

github

Committed by

web-flow

Commit Message

Merge pull request #9337 from Guayaba221/patch-1

chore: fix typo in ruby.md

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61.54

/lnwire/update_fulfill_htlc.go

package lnwire

import (
        "bytes"
        "io"
)

// UpdateFulfillHTLC is sent by Alice to Bob when she wishes to settle a
// particular HTLC referenced by its HTLCKey within a specific active channel
// referenced by ChannelPoint.  A subsequent CommitSig message will be sent by
// Alice to "lock-in" the removal of the specified HTLC, possible containing a
// batch signature covering several settled HTLC's.
type UpdateFulfillHTLC struct {
        // ChanID references an active channel which holds the HTLC to be
        // settled.
        ChanID ChannelID

        // ID denotes the exact HTLC stage within the receiving node's
        // commitment transaction to be removed.
        ID uint64

        // PaymentPreimage is the R-value preimage required to fully settle an
        // HTLC.
        PaymentPreimage [32]byte

        // CustomRecords maps TLV types to byte slices, storing arbitrary data
        // intended for inclusion in the ExtraData field.
        CustomRecords CustomRecords

        // ExtraData is the set of data that was appended to this message to
        // fill out the full maximum transport message size. These fields can
        // be used to specify optional data such as custom TLV fields.
        ExtraData ExtraOpaqueData
}

// NewUpdateFulfillHTLC returns a new empty UpdateFulfillHTLC.
func NewUpdateFulfillHTLC(chanID ChannelID, id uint64,
        preimage [32]byte) *UpdateFulfillHTLC {

        return &UpdateFulfillHTLC{
                ChanID:          chanID,
                ID:              id,
                PaymentPreimage: preimage,
        }
}

// A compile time check to ensure UpdateFulfillHTLC implements the lnwire.Message
// interface.
var _ Message = (*UpdateFulfillHTLC)(nil)

// Decode deserializes a serialized UpdateFulfillHTLC message stored in the passed
// io.Reader observing the specified protocol version.
//
// This is part of the lnwire.Message interface.
func (c *UpdateFulfillHTLC) Decode(r io.Reader, pver uint32) error {
        // msgExtraData is a temporary variable used to read the message extra
        // data field from the reader.
        var msgExtraData ExtraOpaqueData

        if err := ReadElements(r,
                &c.ChanID,
                &c.ID,
                c.PaymentPreimage[:],
                &msgExtraData,
        ); err != nil {
                return err
        }

        // Extract custom records from the extra data field.
        customRecords, _, extraData, err := ParseAndExtractCustomRecords(
                msgExtraData,
        )
        if err != nil {
                return err
        }

        c.CustomRecords = customRecords
        c.ExtraData = extraData

        return nil
}

// Encode serializes the target UpdateFulfillHTLC into the passed io.Writer
// observing the protocol version specified.
//
// This is part of the lnwire.Message interface.
func (c *UpdateFulfillHTLC) Encode(w *bytes.Buffer, pver uint32) error {
        if err := WriteChannelID(w, c.ChanID); err != nil {
                return err
        }

        if err := WriteUint64(w, c.ID); err != nil {
                return err
        }

        if err := WriteBytes(w, c.PaymentPreimage[:]); err != nil {
                return err
        }

        // Combine the custom records and the extra data, then encode the
        // result as a byte slice.
        extraData, err := MergeAndEncode(nil, c.ExtraData, c.CustomRecords)
        if err != nil {
                return err
        }

        return WriteBytes(w, extraData)
}

// MsgType returns the integer uniquely identifying this message type on the
// wire.
//
// This is part of the lnwire.Message interface.
func (c *UpdateFulfillHTLC) MsgType() MessageType {
        return MsgUpdateFulfillHTLC
}

// TargetChanID returns the channel id of the link for which this message is
// intended.
//
// NOTE: Part of peer.LinkUpdater interface.
func (c *UpdateFulfillHTLC) TargetChanID() ChannelID {
        return c.ChanID
}

1	package lnwire
2
3	import (
4	"bytes"
5	"io"
6	)
7
8	// UpdateFulfillHTLC is sent by Alice to Bob when she wishes to settle a
9	// particular HTLC referenced by its HTLCKey within a specific active channel
10	// referenced by ChannelPoint. A subsequent CommitSig message will be sent by
11	// Alice to "lock-in" the removal of the specified HTLC, possible containing a
12	// batch signature covering several settled HTLC's.
13	type UpdateFulfillHTLC struct {
14	// ChanID references an active channel which holds the HTLC to be
15	// settled.
16	ChanID ChannelID
17
18	// ID denotes the exact HTLC stage within the receiving node's
19	// commitment transaction to be removed.
20	ID uint64
21
22	// PaymentPreimage is the R-value preimage required to fully settle an
23	// HTLC.
24	PaymentPreimage [32]byte
25
26	// CustomRecords maps TLV types to byte slices, storing arbitrary data
27	// intended for inclusion in the ExtraData field.
28	CustomRecords CustomRecords
29
30	// ExtraData is the set of data that was appended to this message to
31	// fill out the full maximum transport message size. These fields can
32	// be used to specify optional data such as custom TLV fields.
33	ExtraData ExtraOpaqueData
34	}
35
36	// NewUpdateFulfillHTLC returns a new empty UpdateFulfillHTLC.
37	func NewUpdateFulfillHTLC(chanID ChannelID, id uint64,
38	preimage [32]byte) *UpdateFulfillHTLC {	×
39		×
40	return &UpdateFulfillHTLC{	×
41	ChanID: chanID,	×
42	ID: id,	×
43	PaymentPreimage: preimage,	×
44	}	×
45	}	×
46
47	// A compile time check to ensure UpdateFulfillHTLC implements the lnwire.Message
48	// interface.
49	var _ Message = (*UpdateFulfillHTLC)(nil)
50
51	// Decode deserializes a serialized UpdateFulfillHTLC message stored in the passed
52	// io.Reader observing the specified protocol version.
53	//
54	// This is part of the lnwire.Message interface.
55	func (c *UpdateFulfillHTLC) Decode(r io.Reader, pver uint32) error {	4✔
56	// msgExtraData is a temporary variable used to read the message extra	4✔
57	// data field from the reader.	4✔
58	var msgExtraData ExtraOpaqueData	4✔
59		4✔
60	if err := ReadElements(r,	4✔
61	&c.ChanID,	4✔
62	&c.ID,	4✔
63	c.PaymentPreimage[:],	4✔
64	&msgExtraData,	4✔
65	); err != nil {	4✔
66	return err	×
67	}	×
68
69	// Extract custom records from the extra data field.
70	customRecords, _, extraData, err := ParseAndExtractCustomRecords(	4✔
71	msgExtraData,	4✔
72	)	4✔
73	if err != nil {	4✔
74	return err	×
75	}	×
76
77	c.CustomRecords = customRecords	4✔
78	c.ExtraData = extraData	4✔
79		4✔
80	return nil	4✔
81	}
82
83	// Encode serializes the target UpdateFulfillHTLC into the passed io.Writer
84	// observing the protocol version specified.
85	//
86	// This is part of the lnwire.Message interface.
87	func (c UpdateFulfillHTLC) Encode(w bytes.Buffer, pver uint32) error {	4✔
88	if err := WriteChannelID(w, c.ChanID); err != nil {	4✔
89	return err	×
90	}	×
91
92	if err := WriteUint64(w, c.ID); err != nil {	4✔
93	return err	×
94	}	×
95
96	if err := WriteBytes(w, c.PaymentPreimage[:]); err != nil {	4✔
97	return err	×
98	}	×
99
100	// Combine the custom records and the extra data, then encode the
101	// result as a byte slice.
102	extraData, err := MergeAndEncode(nil, c.ExtraData, c.CustomRecords)	4✔
103	if err != nil {	4✔
104	return err	×
105	}	×
106
107	return WriteBytes(w, extraData)	4✔
108	}
109
110	// MsgType returns the integer uniquely identifying this message type on the
111	// wire.
112	//
113	// This is part of the lnwire.Message interface.
114	func (c *UpdateFulfillHTLC) MsgType() MessageType {	4✔
115	return MsgUpdateFulfillHTLC	4✔
116	}	4✔
117
118	// TargetChanID returns the channel id of the link for which this message is
119	// intended.
120	//
121	// NOTE: Part of peer.LinkUpdater interface.
122	func (c *UpdateFulfillHTLC) TargetChanID() ChannelID {	4✔
123	return c.ChanID	4✔
124	}	4✔

lightningnetwork / lnd / 12199391122

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