12199391122

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

Build # 12199391122

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push

github

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web-flow

Commit Message

Merge pull request #9337 from Guayaba221/patch-1

chore: fix typo in ruby.md

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66.67

/lnwire/reply_channel_range.go

package lnwire

import (
        "bytes"
        "fmt"
        "io"
        "math"
        "sort"

        "github.com/btcsuite/btcd/chaincfg/chainhash"
        "github.com/lightningnetwork/lnd/tlv"
)

// ReplyChannelRange is the response to the QueryChannelRange message. It
// includes the original query, and the next streaming chunk of encoded short
// channel ID's as the response. We'll also include a byte that indicates if
// this is the last query in the message.
type ReplyChannelRange struct {
        // ChainHash denotes the target chain that we're trying to synchronize
        // channel graph state for.
        ChainHash chainhash.Hash

        // FirstBlockHeight is the first block in the query range. The
        // responder should send all new short channel IDs from this block
        // until this block plus the specified number of blocks.
        FirstBlockHeight uint32

        // NumBlocks is the number of blocks beyond the first block that short
        // channel ID's should be sent for.
        NumBlocks uint32

        // Complete denotes if this is the conclusion of the set of streaming
        // responses to the original query.
        Complete uint8

        // EncodingType is a signal to the receiver of the message that
        // indicates exactly how the set of short channel ID's that follow have
        // been encoded.
        EncodingType QueryEncoding

        // ShortChanIDs is a slice of decoded short channel ID's.
        ShortChanIDs []ShortChannelID

        // Timestamps is an optional set of timestamps corresponding to the
        // latest timestamps for the channel update messages corresponding to
        // those referenced in the ShortChanIDs list. If this field is used,
        // then the length must match the length of ShortChanIDs.
        Timestamps Timestamps

        // 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

        // noSort indicates whether or not to sort the short channel ids before
        // writing them out.
        //
        // NOTE: This should only be used for testing.
        noSort bool
}

// NewReplyChannelRange creates a new empty ReplyChannelRange message.
func NewReplyChannelRange() *ReplyChannelRange {
        return &ReplyChannelRange{
                ExtraData: make([]byte, 0),
        }
}

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

// Decode deserializes a serialized ReplyChannelRange message stored in the
// passed io.Reader observing the specified protocol version.
//
// This is part of the lnwire.Message interface.
func (c *ReplyChannelRange) Decode(r io.Reader, pver uint32) error {
        err := ReadElements(r,
                c.ChainHash[:],
                &c.FirstBlockHeight,
                &c.NumBlocks,
                &c.Complete,
        )
        if err != nil {
                return err
        }

        c.EncodingType, c.ShortChanIDs, err = decodeShortChanIDs(r)
        if err != nil {
                return err
        }

        var tlvRecords ExtraOpaqueData
        if err := ReadElements(r, &tlvRecords); err != nil {
                return err
        }

        var timeStamps Timestamps
        typeMap, err := tlvRecords.ExtractRecords(&timeStamps)
        if err != nil {
                return err
        }

        // Set the corresponding TLV types if they were included in the stream.
        if val, ok := typeMap[TimestampsRecordType]; ok && val == nil {
                c.Timestamps = timeStamps

                // Check that a timestamp was provided for each SCID.
                if len(c.Timestamps) != len(c.ShortChanIDs) {
                        return fmt.Errorf("number of timestamps does not " +
                                "match number of SCIDs")
                }
        }

        if len(tlvRecords) != 0 {
                c.ExtraData = tlvRecords
        }

        return nil
}

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

        if err := WriteUint32(w, c.FirstBlockHeight); err != nil {
                return err
        }

        if err := WriteUint32(w, c.NumBlocks); err != nil {
                return err
        }

        if err := WriteUint8(w, c.Complete); err != nil {
                return err
        }

        // For both of the current encoding types, the channel ID's are to be
        // sorted in place, so we'll do that now. The sorting is applied unless
        // we were specifically requested not to for testing purposes.
        if !c.noSort {
                var scidPreSortIndex map[uint64]int
                if len(c.Timestamps) != 0 {
                        // Sanity check that a timestamp was provided for each
                        // SCID.
                        if len(c.Timestamps) != len(c.ShortChanIDs) {
                                return fmt.Errorf("must provide a timestamp " +
                                        "pair for each of the given SCIDs")
                        }

                        // Create a map from SCID value to the original index of
                        // the SCID in the unsorted list.
                        scidPreSortIndex = make(
                                map[uint64]int, len(c.ShortChanIDs),
                        )
                        for i, scid := range c.ShortChanIDs {
                                scidPreSortIndex[scid.ToUint64()] = i
                        }

                        // Sanity check that there were no duplicates in the
                        // SCID list.
                        if len(scidPreSortIndex) != len(c.ShortChanIDs) {
                                return fmt.Errorf("scid list should not " +
                                        "contain duplicates")
                        }
                }

                // Now sort the SCIDs.
                sort.Slice(c.ShortChanIDs, func(i, j int) bool {
                        return c.ShortChanIDs[i].ToUint64() <
                                c.ShortChanIDs[j].ToUint64()
                })

                if len(c.Timestamps) != 0 {
                        timestamps := make(Timestamps, len(c.Timestamps))

                        for i, scid := range c.ShortChanIDs {
                                timestamps[i] = []ChanUpdateTimestamps(
                                        c.Timestamps,
                                )[scidPreSortIndex[scid.ToUint64()]]
                        }
                        c.Timestamps = timestamps
                }
        }

        err := encodeShortChanIDs(w, c.EncodingType, c.ShortChanIDs)
        if err != nil {
                return err
        }

        recordProducers := make([]tlv.RecordProducer, 0, 1)
        if len(c.Timestamps) != 0 {
                recordProducers = append(recordProducers, &c.Timestamps)
        }
        err = EncodeMessageExtraData(&c.ExtraData, recordProducers...)
        if err != nil {
                return err
        }

        return WriteBytes(w, c.ExtraData)
}

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

// LastBlockHeight returns the last block height covered by the range of a
// QueryChannelRange message.
func (c *ReplyChannelRange) LastBlockHeight() uint32 {
        // Handle overflows by casting to uint64.
        lastBlockHeight := uint64(c.FirstBlockHeight) + uint64(c.NumBlocks) - 1
        if lastBlockHeight > math.MaxUint32 {
                return math.MaxUint32
        }
        return uint32(lastBlockHeight)
}

1	package lnwire
2
3	import (
4	"bytes"
5	"fmt"
6	"io"
7	"math"
8	"sort"
9
10	"github.com/btcsuite/btcd/chaincfg/chainhash"
11	"github.com/lightningnetwork/lnd/tlv"
12	)
13
14	// ReplyChannelRange is the response to the QueryChannelRange message. It
15	// includes the original query, and the next streaming chunk of encoded short
16	// channel ID's as the response. We'll also include a byte that indicates if
17	// this is the last query in the message.
18	type ReplyChannelRange struct {
19	// ChainHash denotes the target chain that we're trying to synchronize
20	// channel graph state for.
21	ChainHash chainhash.Hash
22
23	// FirstBlockHeight is the first block in the query range. The
24	// responder should send all new short channel IDs from this block
25	// until this block plus the specified number of blocks.
26	FirstBlockHeight uint32
27
28	// NumBlocks is the number of blocks beyond the first block that short
29	// channel ID's should be sent for.
30	NumBlocks uint32
31
32	// Complete denotes if this is the conclusion of the set of streaming
33	// responses to the original query.
34	Complete uint8
35
36	// EncodingType is a signal to the receiver of the message that
37	// indicates exactly how the set of short channel ID's that follow have
38	// been encoded.
39	EncodingType QueryEncoding
40
41	// ShortChanIDs is a slice of decoded short channel ID's.
42	ShortChanIDs []ShortChannelID
43
44	// Timestamps is an optional set of timestamps corresponding to the
45	// latest timestamps for the channel update messages corresponding to
46	// those referenced in the ShortChanIDs list. If this field is used,
47	// then the length must match the length of ShortChanIDs.
48	Timestamps Timestamps
49
50	// ExtraData is the set of data that was appended to this message to
51	// fill out the full maximum transport message size. These fields can
52	// be used to specify optional data such as custom TLV fields.
53	ExtraData ExtraOpaqueData
54
55	// noSort indicates whether or not to sort the short channel ids before
56	// writing them out.
57	//
58	// NOTE: This should only be used for testing.
59	noSort bool
60	}
61
62	// NewReplyChannelRange creates a new empty ReplyChannelRange message.
63	func NewReplyChannelRange() *ReplyChannelRange {	×
64	return &ReplyChannelRange{	×
65	ExtraData: make([]byte, 0),	×
66	}	×
67	}	×
68
69	// A compile time check to ensure ReplyChannelRange implements the
70	// lnwire.Message interface.
71	var _ Message = (*ReplyChannelRange)(nil)
72
73	// Decode deserializes a serialized ReplyChannelRange message stored in the
74	// passed io.Reader observing the specified protocol version.
75	//
76	// This is part of the lnwire.Message interface.
77	func (c *ReplyChannelRange) Decode(r io.Reader, pver uint32) error {	4✔
78	err := ReadElements(r,	4✔
79	c.ChainHash[:],	4✔
80	&c.FirstBlockHeight,	4✔
81	&c.NumBlocks,	4✔
82	&c.Complete,	4✔
83	)	4✔
84	if err != nil {	4✔
85	return err	×
86	}	×
87
88	c.EncodingType, c.ShortChanIDs, err = decodeShortChanIDs(r)	4✔
89	if err != nil {	4✔
90	return err	×
91	}	×
92
93	var tlvRecords ExtraOpaqueData	4✔
94	if err := ReadElements(r, &tlvRecords); err != nil {	4✔
95	return err	×
96	}	×
97
98	var timeStamps Timestamps	4✔
99	typeMap, err := tlvRecords.ExtractRecords(&timeStamps)	4✔
100	if err != nil {	4✔
101	return err	×
102	}	×
103
104	// Set the corresponding TLV types if they were included in the stream.
105	if val, ok := typeMap[TimestampsRecordType]; ok && val == nil {	8✔
106	c.Timestamps = timeStamps	4✔
107		4✔
108	// Check that a timestamp was provided for each SCID.	4✔
109	if len(c.Timestamps) != len(c.ShortChanIDs) {	4✔
110	return fmt.Errorf("number of timestamps does not " +	×
111	"match number of SCIDs")	×
112	}	×
113	}
114
115	if len(tlvRecords) != 0 {	8✔
116	c.ExtraData = tlvRecords	4✔
117	}	4✔
118
119	return nil	4✔
120	}
121
122	// Encode serializes the target ReplyChannelRange into the passed io.Writer
123	// observing the protocol version specified.
124	//
125	// This is part of the lnwire.Message interface.
126	func (c ReplyChannelRange) Encode(w bytes.Buffer, pver uint32) error {	4✔
127	if err := WriteBytes(w, c.ChainHash[:]); err != nil {	4✔
128	return err	×
129	}	×
130
131	if err := WriteUint32(w, c.FirstBlockHeight); err != nil {	4✔
132	return err	×
133	}	×
134
135	if err := WriteUint32(w, c.NumBlocks); err != nil {	4✔
136	return err	×
137	}	×
138
139	if err := WriteUint8(w, c.Complete); err != nil {	4✔
140	return err	×
141	}	×
142
143	// For both of the current encoding types, the channel ID's are to be
144	// sorted in place, so we'll do that now. The sorting is applied unless
145	// we were specifically requested not to for testing purposes.
146	if !c.noSort {	8✔
147	var scidPreSortIndex map[uint64]int	4✔
148	if len(c.Timestamps) != 0 {	8✔
149	// Sanity check that a timestamp was provided for each	4✔
150	// SCID.	4✔
151	if len(c.Timestamps) != len(c.ShortChanIDs) {	4✔
152	return fmt.Errorf("must provide a timestamp " +	×
153	"pair for each of the given SCIDs")	×
154	}	×
155
156	// Create a map from SCID value to the original index of
157	// the SCID in the unsorted list.
158	scidPreSortIndex = make(	4✔
159	map[uint64]int, len(c.ShortChanIDs),	4✔
160	)	4✔
161	for i, scid := range c.ShortChanIDs {	8✔
162	scidPreSortIndex[scid.ToUint64()] = i	4✔
163	}	4✔
164
165	// Sanity check that there were no duplicates in the
166	// SCID list.
167	if len(scidPreSortIndex) != len(c.ShortChanIDs) {	4✔
168	return fmt.Errorf("scid list should not " +	×
169	"contain duplicates")	×
170	}	×
171	}
172
173	// Now sort the SCIDs.
174	sort.Slice(c.ShortChanIDs, func(i, j int) bool {	8✔
175	return c.ShortChanIDs[i].ToUint64() <	4✔
176	c.ShortChanIDs[j].ToUint64()	4✔
177	})	4✔
178
179	if len(c.Timestamps) != 0 {	8✔
180	timestamps := make(Timestamps, len(c.Timestamps))	4✔
181		4✔
182	for i, scid := range c.ShortChanIDs {	8✔
183	timestamps[i] = []ChanUpdateTimestamps(	4✔
184	c.Timestamps,	4✔
185	)[scidPreSortIndex[scid.ToUint64()]]	4✔
186	}	4✔
187	c.Timestamps = timestamps	4✔
188	}
189	}
190
191	err := encodeShortChanIDs(w, c.EncodingType, c.ShortChanIDs)	4✔
192	if err != nil {	4✔
193	return err	×
194	}	×
195
196	recordProducers := make([]tlv.RecordProducer, 0, 1)	4✔
197	if len(c.Timestamps) != 0 {	8✔
198	recordProducers = append(recordProducers, &c.Timestamps)	4✔
199	}	4✔
200	err = EncodeMessageExtraData(&c.ExtraData, recordProducers...)	4✔
201	if err != nil {	4✔
202	return err	×
203	}	×
204
205	return WriteBytes(w, c.ExtraData)	4✔
206	}
207
208	// MsgType returns the integer uniquely identifying this message type on the
209	// wire.
210	//
211	// This is part of the lnwire.Message interface.
212	func (c *ReplyChannelRange) MsgType() MessageType {	4✔
213	return MsgReplyChannelRange	4✔
214	}	4✔
215
216	// LastBlockHeight returns the last block height covered by the range of a
217	// QueryChannelRange message.
218	func (c *ReplyChannelRange) LastBlockHeight() uint32 {	4✔
219	// Handle overflows by casting to uint64.	4✔
220	lastBlockHeight := uint64(c.FirstBlockHeight) + uint64(c.NumBlocks) - 1	4✔
221	if lastBlockHeight > math.MaxUint32 {	4✔
222	return math.MaxUint32	×
223	}	×
224	return uint32(lastBlockHeight)	4✔
225	}

lightningnetwork / lnd / 12199391122

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