lightningd: trigger changed wait when delinvoice desconly used.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

lightningd/invoice.c

@@ -1371,7 +1371,8 @@ static struct command_result *json_delinvoice(struct command *cmd,
 			return command_fail(cmd, INVOICE_NO_DESCRIPTION,
 					    "Invoice description already removed");
 
-		if (!invoices_delete_description(wallet->invoices, inv_dbid)) {
+		if (!invoices_delete_description(wallet->invoices, inv_dbid,
+						 details->label, details->description)) {
 			log_broken(cmd->ld->log,
 				   "Error attempting to delete description of invoice %"PRIu64,
 				   inv_dbid);

lightningd/test/run-invoice-select-inchan.c

@@ -374,7 +374,9 @@ bool invoices_delete(struct invoices *invoices UNNEEDED,
 { fprintf(stderr, "invoices_delete called!\n"); abort(); }
 /* Generated stub for invoices_delete_description */
 bool invoices_delete_description(struct invoices *invoices UNNEEDED,
-				 u64 inv_dbid UNNEEDED)
+				 u64 inv_dbid UNNEEDED,
+				 const struct json_escape *label UNNEEDED,
+				 const char *description UNNEEDED)
 { fprintf(stderr, "invoices_delete_description called!\n"); abort(); }
 /* Generated stub for invoices_delete_expired */
 void invoices_delete_expired(struct invoices *invoices UNNEEDED,

tests/test_invoices.py

@@ -799,7 +799,7 @@ def test_wait_invoices(node_factory, executor):
     # Creating a new on gives us 3, not another 2!
     waitfut = executor.submit(l2.rpc.call, 'wait', {'subsystem': 'invoices', 'indexname': 'created', 'nextvalue': 3})
     time.sleep(1)
-    inv = l2.rpc.invoice(42, 'invlabel2', 'invdesc2')
+    inv = l2.rpc.invoice(42, 'invlabel2', 'invdesc2', deschashonly=True)
     waitres = waitfut.result(TIMEOUT)
     assert waitres == {'subsystem': 'invoices',
                        'created': 3,
@@ -807,6 +807,15 @@ def test_wait_invoices(node_factory, executor):
                                    'bolt11': inv['bolt11'],
                                    'status': 'unpaid'}}
 
+    # Deleting a description causes updated to fire!
+    waitfut = executor.submit(l2.rpc.call, 'wait', {'subsystem': 'invoices', 'indexname': 'updated', 'nextvalue': 3})
+    time.sleep(1)
+    l2.rpc.delinvoice('invlabel2', status='unpaid', desconly=True)
+    waitres = waitfut.result(TIMEOUT)
+    assert waitres == {'subsystem': 'invoices',
+                       'updated': 3,
+                       'details': {'label': 'invlabel2', 'description': 'invdesc2'}}
+
 
 def test_invoice_deschash(node_factory, chainparams):
     l1, l2 = node_factory.line_graph(2)

wallet/invoices.c

@@ -421,14 +421,21 @@ bool invoices_delete(struct invoices *invoices, u64 inv_dbid,
 	return true;
 }
 
-bool invoices_delete_description(struct invoices *invoices, u64 inv_dbid)
+bool invoices_delete_description(struct invoices *invoices, u64 inv_dbid,
+				 const struct json_escape *label,
+				 const char *description)
 {
 	struct db_stmt *stmt;
 	int changes;
 
-	stmt = db_prepare_v2(invoices->wallet->db, SQL("UPDATE invoices"
-					       "   SET description = NULL"
-					       " WHERE ID = ?;"));
+	stmt = db_prepare_v2(invoices->wallet->db,
+			     SQL("UPDATE invoices"
+				 "   SET description = NULL,"
+				 "       updated_index = ?"
+				 " WHERE ID = ?;"));
+	db_bind_u64(stmt,
+		    invoice_index_update_deldesc(invoices->wallet->ld,
+						 label, description));
 	db_bind_u64(stmt, inv_dbid);
 	db_exec_prepared_v2(stmt);
 
@@ -746,3 +753,12 @@ u64 invoice_index_update_status(struct lightningd *ld,
 	return invoice_index_inc(ld, &state, label, NULL, NULL,
 				 WAIT_INDEX_UPDATED);
 }
+
+u64 invoice_index_update_deldesc(struct lightningd *ld,
+				 const struct json_escape *label,
+				 const char *description)
+{
+	assert(description);
+	return invoice_index_inc(ld, NULL, label, NULL, description,
+				 WAIT_INDEX_UPDATED);
+}

wallet/invoices.h

@@ -121,7 +121,9 @@ bool invoices_delete(struct invoices *invoices,
  * Return false on failure.
  */
 bool invoices_delete_description(struct invoices *invoices,
-				 u64 inv_dbid);
+				 u64 inv_dbid,
+				 const struct json_escape *label,
+				 const char *description);
 
 /**
  * invoices_delete_expired - Delete all expired invoices
@@ -237,6 +239,11 @@ u64 invoice_index_update_status(struct lightningd *ld,
 				const struct json_escape *label,
 				enum invoice_status state);
 
+/* Returns the current updated_index, and increments it. */
+u64 invoice_index_update_deldesc(struct lightningd *ld,
+				 const struct json_escape *label,
+				 const char *description);
+
 void invoice_index_deleted(struct lightningd *ld,
 			   enum invoice_status state,
 			   const struct json_escape *label,