lnrpc: expose new MPP fields on list payments

lnrpc/rpc.proto

@@ -2478,11 +2478,11 @@ message Payment {
     /// Deprecated, use value_sat or value_msat.
     int64 value = 2 [json_name = "value", deprecated = true];
 
-    /// The date of this payment
+    /// Deprecated, use creation_time_ns
-    int64 creation_date = 3 [json_name = "creation_date"];
+    int64 creation_date = 3 [json_name = "creation_date", deprecated = true];
 
-    /// The path this payment took
+    /// The path this payment took.
-    repeated string path = 4 [ json_name = "path" ];
+    repeated string path = 4 [json_name = "path", deprecated = true];
 
     /// Deprecated, use fee_sat or fee_msat.
     int64 fee = 5 [json_name = "fee", deprecated = true];
@@ -2514,6 +2514,35 @@ message Payment {
 
     ///  The fee paid for this payment in milli-satoshis
     int64 fee_msat = 12 [json_name = "fee_msat"];
+
+    /// The time in UNIX nanoseconds at which the payment was created.
+    int64 creation_time_ns = 13 [json_name = "creation_time_ns"];
+
+    /// The HTLCs made in attempt to settle the payment [EXPERIMENTAL].
+    repeated HTLCAttempt htlcs = 14 [json_name = "htlcs"];
+}
+
+message HTLCAttempt {
+        enum HTLCStatus {
+                IN_FLIGHT = 0;
+                SUCCEEDED = 1;
+                FAILED = 2;
+        }
+
+        /// The status of the HTLC.
+        HTLCStatus status = 1 [json_name = "status"];
+
+        /// The route taken by this HTLC.
+        Route route = 2 [json_name = "route"];
+
+        /// The time in UNIX nanonseconds at which this HTLC was sent.
+        int64 attempt_time_ns = 3 [json_name = "attempt_time_ns"];
+
+        /**
+        The time in UNIX nanonseconds at which this HTLC was settled or failed.
+        This value will not be set if the HTLC is still IN_FLIGHT.
+        */
+        int64 resolve_time_ns = 4 [json_name = "resolve_time_ns"];
 }
 
 message ListPaymentsRequest {

lnrpc/rpc.swagger.json

@@ -1418,6 +1418,15 @@
       ],
       "default": "OPEN_CHANNEL"
     },
+    "HTLCAttemptHTLCStatus": {
+      "type": "string",
+      "enum": [
+        "IN_FLIGHT",
+        "SUCCEEDED",
+        "FAILED"
+      ],
+      "default": "IN_FLIGHT"
+    },
     "InvoiceInvoiceState": {
       "type": "string",
       "enum": [
@@ -2511,6 +2520,29 @@
         }
       }
     },
+    "lnrpcHTLCAttempt": {
+      "type": "object",
+      "properties": {
+        "status": {
+          "$ref": "#/definitions/HTLCAttemptHTLCStatus",
+          "description": "/ The status of the HTLC."
+        },
+        "route": {
+          "$ref": "#/definitions/lnrpcRoute",
+          "description": "/ The route taken by this HTLC."
+        },
+        "attempt_time_ns": {
+          "type": "string",
+          "format": "int64",
+          "description": "/ The time in UNIX nanonseconds at which this HTLC was sent."
+        },
+        "resolve_time_ns": {
+          "type": "string",
+          "format": "int64",
+          "description": "*\nThe time in UNIX nanonseconds at which this HTLC was settled or failed.\nThis value will not be set if the HTLC is still IN_FLIGHT."
+        }
+      }
+    },
     "lnrpcHop": {
       "type": "object",
       "properties": {
@@ -3231,14 +3263,14 @@
         "creation_date": {
           "type": "string",
           "format": "int64",
-          "title": "/ The date of this payment"
+          "title": "/ Deprecated, use creation_time_ns"
         },
         "path": {
           "type": "array",
           "items": {
             "type": "string"
           },
-          "title": "/ The path this payment took"
+          "description": "/ The path this payment took."
         },
         "fee": {
           "type": "string",
@@ -3276,6 +3308,18 @@
           "type": "string",
           "format": "int64",
           "title": "/  The fee paid for this payment in milli-satoshis"
+        },
+        "creation_time_ns": {
+          "type": "string",
+          "format": "int64",
+          "description": "/ The time in UNIX nanoseconds at which the payment was created."
+        },
+        "htlcs": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/lnrpcHTLCAttempt"
+          },
+          "description": "/ The HTLCs made in attempt to settle the payment [EXPERIMENTAL]."
         }
       }
     },