#include "config.h" #define RENEPAY_UNITTEST // logs are written in /tmp/debug.txt #include "../payment.c" #include "../flow.c" #include "../uncertainty_network.c" #include "../mcf.c" #include #include #include #include #include #include #include #include #include #include /* AUTOGENERATED MOCKS START */ /* Generated stub for pay_plugin */ struct pay_plugin *pay_plugin; /* Generated stub for try_paying */ const char *try_paying(const tal_t *ctx UNNEEDED, struct payment *payment UNNEEDED, enum jsonrpc_errcode *ecode UNNEEDED) { fprintf(stderr, "try_paying called!\n"); abort(); } /* AUTOGENERATED MOCKS END */ static void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; } /* Canned gossmap, taken from tests/test_gossip.py's * setup_gossip_store_test via od -v -Anone -tx1 < /tmp/ltests-kaf30pn0/test_gossip_store_compact_noappend_1/lightning-2/regtest/gossip_store */ static u8 canned_map[] = { 0x09, 0x80, 0x00, 0x01, 0xbc, 0x09, 0x8b, 0x67, 0xe6, 0x00, 0x00, 0x00, 0x00, 0x10, 0x08, 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0x48, 0xd5 , 0xd0, 0x2e, 0xd9, 0x0c, 0xdc, 0xba, 0xe2, 0x74, 0x6e, 0xfb, 0xca, 0x77, 0xea, 0xe9, 0xa2, 0xce , 0x9a, 0xa8, 0x42, 0x09, 0xa3, 0xa3, 0xae, 0x0e, 0x0f, 0xcc, 0xd3, 0x93, 0xd5, 0xcc, 0x38, 0x76 , 0xd3, 0x58, 0xcc, 0x06, 0x22, 0x6e, 0x46, 0x11, 0x1a, 0x0b, 0x59, 0xca, 0xaf, 0x12, 0x60, 0x43 , 0xeb, 0x5b, 0xbf, 0x28, 0xc3, 0x4f, 0x3a, 0x5e, 0x33, 0x2a, 0x1f, 0xc7, 0xb2, 0xb7, 0x3c, 0xf1 , 0x88, 0x91, 0x0f, 0x00, 0x00, 0x6e, 0x00, 0x00, 0x01, 0x00, 0x01, 0x60, 0x17, 0x53, 0x7f, 0x01 , 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00 , 0x00, 0x03, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x3b, 0x02, 0x33, 0x80 }; /* not_mcf sets NDEBUG, so assert() is useless */ #define ASSERT(x) do { if (!(x)) abort(); } while(0) static const char *print_flows( const tal_t *ctx, const char *desc, const struct gossmap *gossmap, struct flow **flows) { tal_t *this_ctx = tal(ctx,tal_t); char *buff = tal_fmt(ctx,"%s: %zu subflows\n", desc, tal_count(flows)); for (size_t i = 0; i < tal_count(flows); i++) { struct amount_msat fee, delivered; tal_append_fmt(&buff," "); for (size_t j = 0; j < tal_count(flows[i]->path); j++) { struct short_channel_id scid = gossmap_chan_scid(gossmap, flows[i]->path[j]); tal_append_fmt(&buff,"%s%s", j ? "->" : "", type_to_string(this_ctx, struct short_channel_id, &scid)); } delivered = flows[i]->amounts[tal_count(flows[i]->amounts)-1]; if (!amount_msat_sub(&fee, flows[i]->amounts[0], delivered)) abort(); tal_append_fmt(&buff," prob %.2f, %s delivered with fee %s\n", flows[i]->success_prob, type_to_string(this_ctx, struct amount_msat, &delivered), type_to_string(this_ctx, struct amount_msat, &fee)); } tal_free(this_ctx); return buff; } int main(int argc, char *argv[]) { int fd; char *gossfile; struct gossmap *gossmap; struct node_id l1, l2, l3; struct flow **flows; struct short_channel_id scid12, scid23; struct chan_extra_map *chan_extra_map; common_setup(argv[0]); fd = tmpdir_mkstemp(tmpctx, "run-not_mcf.XXXXXX", &gossfile); assert(write_all(fd, canned_map, sizeof(canned_map))); gossmap = gossmap_load(tmpctx, gossfile, NULL); assert(gossmap); remove(gossfile); /* There is a public channel 2<->3 (103x1x0), and private * 1<->2 (110x1x1). */ assert(node_id_from_hexstr("0266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c03518", 66, &l1)); assert(node_id_from_hexstr("022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59", 66, &l2)); assert(node_id_from_hexstr("035d2b1192dfba134e10e540875d366ebc8bc353d5aa766b80c090b39c3a5d885d", 66, &l3)); assert(short_channel_id_from_str("110x1x1", 7, &scid12)); assert(short_channel_id_from_str("103x1x0", 7, &scid23)); chan_extra_map = tal(tmpctx, struct chan_extra_map); chan_extra_map_init(chan_extra_map); uncertainty_network_update(gossmap,chan_extra_map); flows = minflow(tmpctx, gossmap, gossmap_find_node(gossmap, &l1), gossmap_find_node(gossmap, &l3), chan_extra_map, NULL, /* Half the capacity */ AMOUNT_MSAT(500000000), /* max_fee = */ AMOUNT_MSAT(1000000), // 1k sats /* min probability = */ 0.1, /* delay fee factor = */ 1, /* base fee penalty */ 1, /* prob cost factor = */ 10); commit_flow_set(gossmap,chan_extra_map,flows); debug_info("%s\n", print_flows(tmpctx,"Flow via single path l1->l2->l3", gossmap, flows)); /* Should go 1->2->3 */ assert(tal_count(flows) == 1); assert(tal_count(flows[0]->path) == 2); assert(tal_count(flows[0]->dirs) == 2); assert(tal_count(flows[0]->amounts) == 2); assert(flows[0]->path[0] == gossmap_find_chan(gossmap, &scid12)); assert(flows[0]->path[1] == gossmap_find_chan(gossmap, &scid23)); assert(flows[0]->dirs[0] == 1); assert(flows[0]->dirs[1] == 0); assert(amount_msat_eq(flows[0]->amounts[1], AMOUNT_MSAT(500000000))); /* fee_base_msat == 20, fee_proportional_millionths == 1000 */ assert(amount_msat_eq(flows[0]->amounts[0], AMOUNT_MSAT(500000000 + 500000 + 20))); /* Each one has probability ~ 0.5 */ assert(flows[0]->success_prob > 0.249); assert(flows[0]->success_prob <= 0.250); /* Should have filled in some extra data! */ struct chan_extra *ce = chan_extra_map_get(chan_extra_map, scid12); assert(short_channel_id_eq(&ce->scid, &scid12)); /* l1->l2 dir is 1 */ assert(ce->half[1].num_htlcs == 1); assert(amount_msat_eq(ce->half[1].htlc_total, AMOUNT_MSAT(500000000 + 500000 + 20))); assert(amount_msat_eq(ce->half[1].known_min, AMOUNT_MSAT(0))); assert(amount_msat_eq(ce->half[1].known_max, AMOUNT_MSAT(1000000000))); assert(ce->half[0].num_htlcs == 0); assert(amount_msat_eq(ce->half[0].htlc_total, AMOUNT_MSAT(0))); assert(amount_msat_eq(ce->half[0].known_min, AMOUNT_MSAT(0))); assert(amount_msat_eq(ce->half[0].known_max, AMOUNT_MSAT(1000000000))); ce = chan_extra_map_get(chan_extra_map, scid23); assert(short_channel_id_eq(&ce->scid, &scid23)); /* l2->l3 dir is 0 */ assert(ce->half[0].num_htlcs == 1); assert(amount_msat_eq(ce->half[0].htlc_total, AMOUNT_MSAT(500000000))); assert(amount_msat_eq(ce->half[0].known_min, AMOUNT_MSAT(0))); assert(amount_msat_eq(ce->half[0].known_max, AMOUNT_MSAT(1000000000))); assert(ce->half[1].num_htlcs == 0); assert(amount_msat_eq(ce->half[1].htlc_total, AMOUNT_MSAT(0))); assert(amount_msat_eq(ce->half[1].known_min, AMOUNT_MSAT(0))); assert(amount_msat_eq(ce->half[1].known_max, AMOUNT_MSAT(1000000000))); /* Clear that */ remove_completed_flow_set(gossmap, chan_extra_map, flows); // /* Now try adding a local channel scid */ struct short_channel_id scid13; struct gossmap_localmods *mods = gossmap_localmods_new(tmpctx); assert(short_channel_id_from_str("111x1x1", 7, &scid13)); /* 400,000sat channel from 1->3, basefee 0, ppm 1000, delay 5 */ assert(gossmap_local_addchan(mods, &l1, &l3, &scid13, NULL)); assert(gossmap_local_updatechan(mods, &scid13, AMOUNT_MSAT(0), AMOUNT_MSAT(400000000), 0, 1000, 5, true, 0)); /* Apply changes, check they work. */ gossmap_apply_localmods(gossmap, mods); struct gossmap_chan *local_chan = gossmap_find_chan(gossmap, &scid13); assert(local_chan); /* The local chans have no "capacity", so set it manually. */ new_chan_extra(chan_extra_map, scid13, AMOUNT_MSAT(400000000)); // flows = minflow(tmpctx, gossmap, // gossmap_find_node(gossmap, &l1), // gossmap_find_node(gossmap, &l3), // chan_extra_map, NULL, // /* This will go first via 1-2-3, then 1->3. */ // AMOUNT_MSAT(500000000), // /* max_fee = */ AMOUNT_MSAT(1000000), // 1k sats // /* min probability = */ 0.4, // /* delay fee factor = */ 1, // /* base fee penalty */ 1, // /* prob cost factor = */ 10); // print_flows("Flow via two paths, low mu", gossmap, flows); // assert(tal_count(flows) == 2); // // if(tal_count(flows[0]->path)path)) // { // struct flow* tmp = flows[0]; // flows[0] = flows[1]; // flows[1]=tmp; // } // // assert(tal_count(flows[0]->path) == 2); // assert(tal_count(flows[0]->dirs) == 2); // assert(tal_count(flows[0]->amounts) == 2); // assert(flows[0]->path[0] == gossmap_find_chan(gossmap, &scid12)); // assert(flows[0]->path[1] == gossmap_find_chan(gossmap, &scid23)); // assert(flows[0]->dirs[0] == 1); // assert(flows[0]->dirs[1] == 0); // /* First one has probability ~ 50% */ // assert(flows[0]->success_prob < 0.55); // assert(flows[0]->success_prob > 0.45); // assert(tal_count(flows[1]->path) == 1); // assert(tal_count(flows[1]->dirs) == 1); // assert(tal_count(flows[1]->amounts) == 1); // /* We will try cheaper path first, but not to fill it! */ // assert(flows[1]->path[0] == gossmap_find_chan(gossmap, &scid13)); // assert(flows[1]->dirs[0] == 0); // assert(amount_msat_less(flows[1]->amounts[0], AMOUNT_MSAT(400000000))); // /* Second one has probability ~ 50% */ // assert(flows[1]->success_prob < 0.55); // assert(flows[1]->success_prob > 0.45); // /* Delivered amount must be the total! */ // assert(flows[0]->amounts[1].millisatoshis // + flows[1]->amounts[0].millisatoshis == 500000000); // /* Clear them. */ // remove_completed_flow(gossmap, chan_extra_map, flows[0]); // remove_completed_flow(gossmap, chan_extra_map, flows[1]); /* Higher mu values mean we pay more for certainty! */ struct flow **flows2 = minflow(tmpctx, gossmap, gossmap_find_node(gossmap, &l1), gossmap_find_node(gossmap, &l3), chan_extra_map, NULL, /* This will go 400000000 via 1->3, rest via 1-2-3. */ /* amount = */ AMOUNT_MSAT(500000000), //500k sats /* max_fee = */ AMOUNT_MSAT(1000000), // 1k sats /* min probability = */ 0.1, // 10% /* delay fee factor = */ 1, /* base fee penalty */ 1, /* prob cost factor = */ 10); debug_info("%s\n", print_flows(tmpctx,"Flow via two paths, high mu", gossmap, flows2)); assert(tal_count(flows2) == 2); /* The solution is composed by two paths, one with lenght 1 and the * other with lenght 2. There is no guaranteed order of the solutions * returning from minflow, hence we need to test them. */ int ID1 = 0, ID2 = 1; if(tal_count(flows2[ID1]->path)==2) { swap(&ID1,&ID2); } assert(tal_count(flows2[ID1]->path) == 1); assert(tal_count(flows2[ID2]->path) == 2); // /* Sends more via 1->3, since it's more expensive (but lower prob) */ assert(amount_msat_greater(flows2[ID1]->amounts[0], flows2[ID2]->amounts[0])); assert(flows2[ID1]->success_prob < flows2[ID2]->success_prob); /* Delivered amount must be the total! */ assert(flows2[ID1]->amounts[0].millisatoshis + flows2[ID2]->amounts[1].millisatoshis == 500000000); // /* But in total it's more expensive! */ assert(flows2[ID1]->amounts[0].millisatoshis + flows2[ID2]->amounts[0].millisatoshis > flows2[ID1]->amounts[0].millisatoshis - flows2[ID2]->amounts[0].millisatoshis); common_shutdown(); }