graph/db: simplify auth proof and edge info

Remove various unused fields and methods.

graph/db/models/channel_auth_proof.go

@@ -1,7 +1,5 @@
 package models
 
-import "github.com/btcsuite/btcd/btcec/v2/ecdsa"
-
 // ChannelAuthProof is the authentication proof (the signature portion) for a
 // channel. Using the four signatures contained in the struct, and some
 // auxiliary knowledge (the funding script, node identities, and outpoint) nodes
@@ -10,117 +8,23 @@ import "github.com/btcsuite/btcd/btcec/v2/ecdsa"
 // nodeID1 || nodeID2 || bitcoinKey1|| bitcoinKey2 || 2-byte-feature-len ||
 // features.
 type ChannelAuthProof struct {
-	// nodeSig1 is a cached instance of the first node signature.
-	nodeSig1 *ecdsa.Signature
-
 	// NodeSig1Bytes are the raw bytes of the first node signature encoded
 	// in DER format.
 	NodeSig1Bytes []byte
 
-	// nodeSig2 is a cached instance of the second node signature.
-	nodeSig2 *ecdsa.Signature
-
 	// NodeSig2Bytes are the raw bytes of the second node signature
 	// encoded in DER format.
 	NodeSig2Bytes []byte
 
-	// bitcoinSig1 is a cached instance of the first bitcoin signature.
-	bitcoinSig1 *ecdsa.Signature
-
 	// BitcoinSig1Bytes are the raw bytes of the first bitcoin signature
 	// encoded in DER format.
 	BitcoinSig1Bytes []byte
 
-	// bitcoinSig2 is a cached instance of the second bitcoin signature.
-	bitcoinSig2 *ecdsa.Signature
-
 	// BitcoinSig2Bytes are the raw bytes of the second bitcoin signature
 	// encoded in DER format.
 	BitcoinSig2Bytes []byte
 }
 
-// Node1Sig is the signature using the identity key of the node that is first
-// in a lexicographical ordering of the serialized public keys of the two nodes
-// that created the channel.
-//
-// NOTE: By having this method to access an attribute, we ensure we only need
-// to fully deserialize the signature if absolutely necessary.
-func (c *ChannelAuthProof) Node1Sig() (*ecdsa.Signature, error) {
-	if c.nodeSig1 != nil {
-		return c.nodeSig1, nil
-	}
-
-	sig, err := ecdsa.ParseSignature(c.NodeSig1Bytes)
-	if err != nil {
-		return nil, err
-	}
-
-	c.nodeSig1 = sig
-
-	return sig, nil
-}
-
-// Node2Sig is the signature using the identity key of the node that is second
-// in a lexicographical ordering of the serialized public keys of the two nodes
-// that created the channel.
-//
-// NOTE: By having this method to access an attribute, we ensure we only need
-// to fully deserialize the signature if absolutely necessary.
-func (c *ChannelAuthProof) Node2Sig() (*ecdsa.Signature, error) {
-	if c.nodeSig2 != nil {
-		return c.nodeSig2, nil
-	}
-
-	sig, err := ecdsa.ParseSignature(c.NodeSig2Bytes)
-	if err != nil {
-		return nil, err
-	}
-
-	c.nodeSig2 = sig
-
-	return sig, nil
-}
-
-// BitcoinSig1 is the signature using the public key of the first node that was
-// used in the channel's multi-sig output.
-//
-// NOTE: By having this method to access an attribute, we ensure we only need
-// to fully deserialize the signature if absolutely necessary.
-func (c *ChannelAuthProof) BitcoinSig1() (*ecdsa.Signature, error) {
-	if c.bitcoinSig1 != nil {
-		return c.bitcoinSig1, nil
-	}
-
-	sig, err := ecdsa.ParseSignature(c.BitcoinSig1Bytes)
-	if err != nil {
-		return nil, err
-	}
-
-	c.bitcoinSig1 = sig
-
-	return sig, nil
-}
-
-// BitcoinSig2 is the signature using the public key of the second node that
-// was used in the channel's multi-sig output.
-//
-// NOTE: By having this method to access an attribute, we ensure we only need
-// to fully deserialize the signature if absolutely necessary.
-func (c *ChannelAuthProof) BitcoinSig2() (*ecdsa.Signature, error) {
-	if c.bitcoinSig2 != nil {
-		return c.bitcoinSig2, nil
-	}
-
-	sig, err := ecdsa.ParseSignature(c.BitcoinSig2Bytes)
-	if err != nil {
-		return nil, err
-	}
-
-	c.bitcoinSig2 = sig
-
-	return sig, nil
-}
-
 // IsEmpty check is the authentication proof is empty Proof is empty if at
 // least one of the signatures are equal to nil.
 func (c *ChannelAuthProof) IsEmpty() bool {