Merge pull request #618 from TheBlueMatt/2020-05-sample-c-bindings

[rust-lightning] / lightning-c-bindings / demo.c

diff --git a/lightning-c-bindings/demo.c b/lightning-c-bindings/demo.c
new file mode 100644 (file)
index 0000000..645c95b
--- /dev/null
+++ b/lightning-c-bindings/demo.c
@@ -0,0 +1,96 @@
+#include "include/rust_types.h"
+#include "include/lightning.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+void print_log(const void *this_arg, const char *record) {
+       printf("%s", record);
+}
+
+uint32_t get_fee(const void *this_arg, LDKConfirmationTarget target) {
+       if (target == LDKConfirmationTarget_Background) {
+               return 253;
+       } else {
+               return 507;
+       }
+}
+
+void broadcast_tx(const void *this_arg, LDKTransaction tx) {
+       //TODO
+}
+
+LDKCResult_NoneChannelMonitorUpdateErrZ add_channel_monitor(const void *this_arg, LDKOutPoint funding_txo, LDKChannelMonitor monitor) {
+       return CResult_NoneChannelMonitorUpdateErrZ_ok();
+}
+LDKCResult_NoneChannelMonitorUpdateErrZ update_channel_monitor(const void *this_arg, LDKOutPoint funding_txo, LDKChannelMonitorUpdate monitor) {
+       return CResult_NoneChannelMonitorUpdateErrZ_ok();
+}
+LDKCVec_MonitorEventZ monitors_pending_monitor_events(const void *this_arg) {
+       LDKCVec_MonitorEventZ empty_htlc_vec = {
+               .data = NULL,
+               .datalen = 0,
+       };
+       return empty_htlc_vec;
+}
+
+int main() {
+       uint8_t node_seed[32];
+       memset(node_seed, 0, 32);
+
+       LDKNetwork net = LDKNetwork_Bitcoin;
+
+       LDKLogger logger = {
+               .this_arg = NULL,
+               .log = print_log,
+               .free = NULL,
+       };
+
+       LDKFeeEstimator fee_est = {
+               .this_arg = NULL,
+               .get_est_sat_per_1000_weight = get_fee,
+               .free = NULL
+       };
+
+       LDKManyChannelMonitor mon = {
+               .this_arg = NULL,
+               .add_monitor = add_channel_monitor,
+               .update_monitor = update_channel_monitor,
+               .get_and_clear_pending_monitor_events = monitors_pending_monitor_events,
+               .free = NULL,
+       };
+
+       LDKBroadcasterInterface broadcast = {
+               broadcast.this_arg = NULL,
+               broadcast.broadcast_transaction = broadcast_tx,
+               .free = NULL,
+       };
+
+       LDKKeysManager keys = KeysManager_new(&node_seed, net, 0, 0);
+       LDKKeysInterface keys_source = KeysManager_as_KeysInterface(&keys);
+
+       LDKUserConfig config = UserConfig_default();
+
+       LDKChannelManager cm = ChannelManager_new(net, fee_est, mon, broadcast, logger, keys_source, config, 0);
+
+       LDKCVec_ChannelDetailsZ channels = ChannelManager_list_channels(&cm);
+       assert((unsigned long)channels.data < 4096); // There's an offset, but it should still be an offset against null in the 0 page
+       assert(channels.datalen == 0);
+       CVec_ChannelDetailsZ_free(channels);
+
+       LDKEventsProvider prov = ChannelManager_as_EventsProvider(&cm);
+       LDKCVec_EventZ events = (prov.get_and_clear_pending_events)(prov.this_arg);
+       assert((unsigned long)events.data < 4096); // There's an offset, but it should still be an offset against null in the 0 page
+       assert(events.datalen == 0);
+
+       ChannelManager_free(cm);
+       KeysManager_free(keys);
+
+       // Check that passing empty vecs to rust doesn't blow it up:
+       LDKCVec_MonitorEventZ empty_htlc_vec = {
+               .data = NULL,
+               .datalen = 0,
+       };
+       CVec_MonitorEventZ_free(empty_htlc_vec);
+}