Merge pull request #692 from hieblmi/static-addr-dependencies

StaticAddr: Dependencies

Author: hieblmi

staticaddr/protocol_version.go

@@ -0,0 +1,48 @@
+package staticaddr
+
+import (
+	looprpc "github.com/lightninglabs/loop/swapserverrpc"
+)
+
+// AddressProtocolVersion represents the protocol version (declared on rpc
+// level) that the client declared to us.
+type AddressProtocolVersion uint32
+
+const (
+	// ProtocolVersion_V0 indicates that the client is a legacy version
+	// that did not report its protocol version.
+	ProtocolVersion_V0 AddressProtocolVersion = 0
+
+	// stableRPCProtocolVersion defines the current stable RPC protocol
+	// version.
+	stableRPCProtocolVersion = looprpc.StaticAddressProtocolVersion_V0
+)
+
+var (
+	// currentRPCProtocolVersion holds the version of the RPC protocol
+	// that the client selected to use for new swaps. Shouldn't be lower
+	// than the previous protocol version.
+	currentRPCProtocolVersion = stableRPCProtocolVersion
+)
+
+// CurrentRPCProtocolVersion returns the RPC protocol version selected to be
+// used for new swaps.
+func CurrentRPCProtocolVersion() looprpc.StaticAddressProtocolVersion {
+	return currentRPCProtocolVersion
+}
+
+// Valid returns true if the value of the AddressProtocolVersion is valid.
+func (p AddressProtocolVersion) Valid() bool {
+	return p <= AddressProtocolVersion(stableRPCProtocolVersion)
+}
+
+// String returns the string representation of a protocol version.
+func (p AddressProtocolVersion) String() string {
+	switch p {
+	case ProtocolVersion_V0:
+		return "V0"
+
+	default:
+		return "Unknown"
+	}
+}

swap/keychain.go

@@ -4,4 +4,8 @@ var (
 	// KeyFamily is the key family used to generate keys that allow
 	// spending of the htlc.
 	KeyFamily = int32(99)
+
+	// StaticAddressKeyFamily is the key family used to generate static
+	// address keys.
+	StaticAddressKeyFamily = int32(42060)
 )