X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Forg%2Fldk%2FHumanObjectPeerTest.java;h=79085c5362654b7913a381d0c1af24fa5090e85b;hb=f7a4eb82edf05b8ac8f3fcc3d6533681c530f368;hp=a0879869ff8355c8b1d80c8b8d710315ec0cdc94;hpb=f8c25e52ce878136043ddc4dbfac6c6640f1d4f6;p=ldk-java diff --git a/src/test/java/org/ldk/HumanObjectPeerTest.java b/src/test/java/org/ldk/HumanObjectPeerTest.java index a0879869..79085c53 100644 --- a/src/test/java/org/ldk/HumanObjectPeerTest.java +++ b/src/test/java/org/ldk/HumanObjectPeerTest.java @@ -1,13 +1,12 @@ package org.ldk; import org.bitcoinj.core.*; -import org.bitcoinj.core.Transaction; import org.bitcoinj.script.Script; import org.junit.jupiter.api.Test; import org.ldk.batteries.ChannelManagerConstructor; import org.ldk.batteries.NioPeerHandler; -import org.ldk.enums.LDKNetwork; -import org.ldk.impl.bindings; +import org.ldk.enums.Currency; +import org.ldk.enums.Network; import org.ldk.structs.*; import org.ldk.util.TwoTuple; @@ -24,8 +23,9 @@ class HumanObjectPeerTestInstance { private final boolean break_cross_peer_refs; private final boolean use_nio_peer_handler; private final boolean use_filter; + private final boolean use_chan_manager_constructor; - HumanObjectPeerTestInstance(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean use_nio_peer_handler, boolean use_filter) { + HumanObjectPeerTestInstance(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean use_nio_peer_handler, boolean use_filter, boolean use_chan_manager_constructor) { this.nice_close = nice_close; this.use_km_wrapper = use_km_wrapper; this.use_manual_watch = use_manual_watch; @@ -33,6 +33,7 @@ class HumanObjectPeerTestInstance { this.break_cross_peer_refs = break_cross_peer_refs; this.use_nio_peer_handler = use_nio_peer_handler; this.use_filter = use_filter; + this.use_chan_manager_constructor = use_chan_manager_constructor; } class Peer { @@ -45,15 +46,16 @@ class HumanObjectPeerTestInstance { @Override public Sign get_channel_signer(boolean inbound, long channel_value_satoshis) { Sign underlying_ck = underlying_if.get_channel_signer(inbound, channel_value_satoshis); - Sign.SignInterface si = new Sign.SignInterface() { + BaseSign underlying_base = underlying_ck.get_base_sign(); + BaseSign.BaseSignInterface bsi = new BaseSign.BaseSignInterface() { @Override public byte[] get_per_commitment_point(long idx) { - return underlying_ck.get_per_commitment_point(idx); + return underlying_base.get_per_commitment_point(idx); } @Override public byte[] release_commitment_secret(long idx) { - return underlying_ck.release_commitment_secret(idx); + return underlying_base.release_commitment_secret(idx); } @Override @@ -63,47 +65,55 @@ class HumanObjectPeerTestInstance { @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx) { - return underlying_ck.sign_counterparty_commitment(commitment_tx); + return underlying_base.sign_counterparty_commitment(commitment_tx); } @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) { - return underlying_ck.sign_holder_commitment_and_htlcs(holder_commitment_tx); + return underlying_base.sign_holder_commitment_and_htlcs(holder_commitment_tx); + } + + @Override + public Result_SignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) { + return underlying_base.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key); } @Override - public Result_SignatureNoneZ sign_justice_transaction(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) { - return underlying_ck.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc); + public Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) { + return underlying_base.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc); } @Override public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) { - return underlying_ck.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc); + return underlying_base.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc); } @Override public Result_SignatureNoneZ sign_closing_transaction(byte[] closing_tx) { - return underlying_ck.sign_closing_transaction(closing_tx); + return underlying_base.sign_closing_transaction(closing_tx); } @Override public Result_SignatureNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) { - return underlying_ck.sign_channel_announcement(msg); + return underlying_base.sign_channel_announcement(msg); } @Override public void ready_channel(ChannelTransactionParameters params) { - underlying_ck.ready_channel(params); + underlying_base.ready_channel(params); } - + }; + Sign.SignInterface si = new Sign.SignInterface() { @Override public byte[] write() { return underlying_ck.write(); } }; - Sign resp = Sign.new_impl(si, underlying_ck.get_pubkeys()); + Sign resp = Sign.new_impl(si, bsi, underlying_base.get_pubkeys()); must_free_objs.add(new WeakReference<>(si)); + must_free_objs.add(new WeakReference<>(bsi)); must_free_objs.add(new WeakReference<>(resp)); + must_free_objs.add(new WeakReference<>(underlying_base)); must_free_objs.add(new WeakReference<>(underlying_ck)); return resp; } @@ -117,6 +127,11 @@ class HumanObjectPeerTestInstance { public Result_SignDecodeErrorZ read_chan_signer(byte[] reader) { return underlying_if.read_chan_signer(reader); } + + @Override + public Result_RecoverableSignatureNoneZ sign_invoice(byte[] invoice_preimage) { + return underlying_if.sign_invoice(invoice_preimage); + } }); } @@ -126,7 +141,7 @@ class HumanObjectPeerTestInstance { synchronized (monitors) { assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null; } - return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK(); + return Result_NoneChannelMonitorUpdateErrZ.ok(); } public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) { @@ -136,7 +151,7 @@ class HumanObjectPeerTestInstance { Result_NoneMonitorUpdateErrorZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger); assert update_res instanceof Result_NoneMonitorUpdateErrorZ.Result_NoneMonitorUpdateErrorZ_OK; } - return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK(); + return Result_NoneChannelMonitorUpdateErrZ.ok(); } @Override @@ -162,6 +177,7 @@ class HumanObjectPeerTestInstance { final Logger logger; final FeeEstimator fee_estimator; final BroadcasterInterface tx_broadcaster; + final KeysManager explicit_keys_manager; final KeysInterface keys_interface; final ChainMonitor chain_monitor; final NetGraphMsgHandler router; @@ -169,18 +185,19 @@ class HumanObjectPeerTestInstance { final HashSet filter_additions; final Filter filter; ChannelManager chan_manager; - EventsProvider chan_manager_events; PeerManager peer_manager; final HashMap monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here. byte[] node_id; final LinkedList broadcast_set = new LinkedList<>(); + final LinkedList pending_manager_events = new LinkedList<>(); + ChannelManagerConstructor constructor = null; GcCheck obj = new GcCheck(); private TwoTuple test_mon_roundtrip(ChannelMonitor mon) { // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the // ChannelMonitor is. This used to be broken. - Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.constructor_BlockHashChannelMonitorZ_read(mon.write(), keys_interface); + Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.BlockHashChannelMonitorZ_read(mon.write(), keys_interface); assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK; TwoTuple funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.b.get_funding_txo(); System.gc(); System.runFinalization(); // Give the GC a chance to run. @@ -191,7 +208,10 @@ class HumanObjectPeerTestInstance { logger = Logger.new_impl((String arg) -> System.out.println(seed + ": " + arg)); fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253)); tx_broadcaster = BroadcasterInterface.new_impl(tx -> { - broadcast_set.add(tx); + synchronized (broadcast_set) { + broadcast_set.add(tx); + broadcast_set.notifyAll(); + } }); monitors = new HashMap<>(); this.seed = seed; @@ -205,7 +225,7 @@ class HumanObjectPeerTestInstance { assert Arrays.equals(res.a.get_txid(), id.get_txid()); assert res.a.get_index() == id.get_index(); } - return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK(); + return Result_NoneChannelMonitorUpdateErrZ.ok(); } @Override @@ -217,7 +237,7 @@ class HumanObjectPeerTestInstance { assert Arrays.equals(res.a.get_txid(), id.get_txid()); assert res.a.get_index() == id.get_index(); } - return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK(); + return Result_NoneChannelMonitorUpdateErrZ.ok(); } }); @@ -227,8 +247,9 @@ class HumanObjectPeerTestInstance { @Override public void register_tx(byte[] txid, byte[] script_pubkey) { filter_additions.add(Arrays.toString(txid)); } - @Override public void register_output(OutPoint outpoint, byte[] script_pubkey) { - filter_additions.add(Arrays.toString(outpoint.get_txid()) + ":" + outpoint.get_index()); + @Override public Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output) { + filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index()); + return Option_C2Tuple_usizeTransactionZZ.none(); } }); } else { @@ -239,7 +260,7 @@ class HumanObjectPeerTestInstance { chain_watch = get_manual_watch(); chain_monitor = null; } else { - chain_monitor = ChainMonitor.constructor_new(filter, tx_broadcaster, logger, fee_estimator, persister); + chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister); chain_watch = chain_monitor.as_Watch(); } @@ -247,17 +268,23 @@ class HumanObjectPeerTestInstance { for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); } - KeysManager keys = KeysManager.constructor_new(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000)); + KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000)); if (use_km_wrapper) { this.keys_interface = manual_keysif(keys.as_KeysInterface()); + this.explicit_keys_manager = null; } else { this.keys_interface = keys.as_KeysInterface(); + this.explicit_keys_manager = keys; } - this.router = NetGraphMsgHandler.constructor_new(new byte[32], null, logger); + this.router = NetGraphMsgHandler.of(new byte[32], null, logger); } private void bind_nio() { if (!use_nio_peer_handler) return; - try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; } + if (use_chan_manager_constructor) { + this.nio_peer_handler = this.constructor.nio_peer_handler; + } else { + try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; } + } for (short i = 10_000; true; i++) { try { nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i)); @@ -268,61 +295,93 @@ class HumanObjectPeerTestInstance { } Peer(byte seed) { this(null, seed); - this.chan_manager = ChannelManager.constructor_new(FeeEstimator.new_impl(confirmation_target -> 0), chain_watch, tx_broadcaster, logger, this.keys_interface, UserConfig.constructor_default(), LDKNetwork.LDKNetwork_Bitcoin, new byte[32], 0); - this.node_id = chan_manager.get_our_node_id(); - this.chan_manager_events = chan_manager.as_EventsProvider(); - - byte[] random_data = new byte[32]; - for (byte i = 0; i < 32; i++) { - random_data[i] = (byte) ((i ^ seed) ^ 0xf0); + if (use_chan_manager_constructor) { + this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, UserConfig.with_default(), new byte[32], 0, + this.keys_interface, this.fee_estimator, this.chain_monitor, this.router, this.tx_broadcaster, this.logger); + constructor.chain_sync_completed(new ChannelManagerConstructor.ChannelManagerPersister() { + @Override public void handle_event(Event event) { + synchronized (pending_manager_events) { + pending_manager_events.add(event); + pending_manager_events.notifyAll(); + } + } + @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; } + }); + this.chan_manager = constructor.channel_manager; + this.peer_manager = constructor.peer_manager; + must_free_objs.add(new WeakReference<>(this.chan_manager)); + } else { + ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0)); + this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, logger, this.keys_interface, UserConfig.with_default(), params); + byte[] random_data = keys_interface.get_secure_random_bytes(); + this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger); } - this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger); + + this.node_id = chan_manager.get_our_node_id(); bind_nio(); System.gc(); } + Object ptr_to; Peer(Peer orig) { this(null, orig.seed); - if (!break_cross_peer_refs) { + if (use_chan_manager_constructor) { + byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()}; + byte[] serialized = orig.chan_manager.write(); + try { + this.constructor = new ChannelManagerConstructor(serialized, monitors, this.keys_interface, + this.fee_estimator, this.chain_monitor, this.filter, this.router, this.tx_broadcaster, this.logger); + constructor.chain_sync_completed(new ChannelManagerConstructor.ChannelManagerPersister() { + @Override public void handle_event(Event event) { + synchronized (pending_manager_events) { + pending_manager_events.add(event); + pending_manager_events.notifyAll(); + } + } + @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; } + }); + this.chan_manager = constructor.channel_manager; + this.peer_manager = constructor.peer_manager; + must_free_objs.add(new WeakReference<>(this.chan_manager)); + // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer + // which have been removed from the ChannelManager but which we still need to handle. + this.pending_manager_events.addAll(orig.pending_manager_events); + if (!this.pending_manager_events.isEmpty()) { + // However, this implies cross_reload_ref_pollution + cross_reload_ref_pollution = true; + } + } catch (ChannelManagerConstructor.InvalidSerializedDataException e) { + assert false; + } + } else { ChannelMonitor[] monitors = new ChannelMonitor[1]; - synchronized (monitors) { - assert orig.monitors.size() == 1; + assert orig.monitors.size() == 1; + if (!break_cross_peer_refs) { monitors[0] = orig.monitors.values().stream().iterator().next(); + } else { + byte[] serialized = orig.monitors.values().stream().iterator().next().write(); + Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ res = + UtilMethods.BlockHashChannelMonitorZ_read(serialized, this.keys_interface); + assert res instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK; + monitors[0] = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) res).res.b; } byte[] serialized = orig.chan_manager.write(); Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res = - UtilMethods.constructor_BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.constructor_default(), monitors); + UtilMethods.BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.with_default(), monitors); assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK; this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.b; this.chain_watch.watch_channel(monitors[0].get_funding_txo().a, monitors[0]); - } else { - final ArrayList channel_monitors = new ArrayList(); - synchronized (monitors) { - assert orig.monitors.size() == 1; - channel_monitors.add(orig.monitors.values().stream().iterator().next().write()); + byte[] random_data = keys_interface.get_secure_random_bytes(); + this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger); + if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) { + // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a + // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we + // shouldn't bother waiting for the original to be freed later on. + cross_reload_ref_pollution = true; } - byte[] serialized = orig.chan_manager.write(); - try { - ChannelManagerConstructor constructed = new ChannelManagerConstructor(serialized, channel_monitors.toArray(new byte[1][]), this.keys_interface, this.fee_estimator, this.chain_watch, this.filter, this.tx_broadcaster, this.logger); - this.chan_manager = constructed.channel_manager; - constructed.chain_sync_completed(); - if (use_filter && !use_manual_watch) { - // With a manual watch we don't actually use the filter object at all. - assert this.filter_additions.containsAll(orig.filter_additions) && - orig.filter_additions.containsAll(this.filter_additions); - } - } catch (ChannelManagerConstructor.InvalidSerializedDataException e) { - assert false; - } - } - if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) { - // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a - // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we - // shouldn't bother waiting for the original to be freed later on. - cross_reload_ref_pollution = true; } this.node_id = chan_manager.get_our_node_id(); - this.chan_manager_events = chan_manager.as_EventsProvider(); + bind_nio(); if (cross_reload_ref_pollution) { // This really, really needs to be handled at the bindings layer, but its rather complicated - @@ -334,13 +393,6 @@ class HumanObjectPeerTestInstance { // the ChannelSigner. this.ptr_to = orig.chan_manager; } - - byte[] random_data = new byte[32]; - for (byte i = 0; i < 32; i++) { - random_data[i] = (byte) ((i ^ seed) ^ 0xf0); - } - this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger); - bind_nio(); } TwoTuple[]>[] connect_block(Block b, int height, long expected_monitor_update_len) { @@ -348,14 +400,17 @@ class HumanObjectPeerTestInstance { TwoTuple[] txn; if (b.hasTransactions()) { assert b.getTransactions().size() == 1; - TwoTuple txp = new TwoTuple<>((long) 1, b.getTransactions().get(0).bitcoinSerialize()); + TwoTuple txp = new TwoTuple<>((long) 0, b.getTransactions().get(0).bitcoinSerialize()); txn = new TwoTuple[]{txp}; } else txn = new TwoTuple[0]; - chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height); if (chain_monitor != null) { - chain_monitor.block_connected(header, txn, height); + chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height); + chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height); } else { + chan_manager.as_Confirm().transactions_confirmed(header, txn, height); + chan_manager.as_Confirm().best_block_updated(header, height); + // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves synchronized (monitors) { assert monitors.size() == 1; for (ChannelMonitor mon : monitors.values()) { @@ -368,33 +423,77 @@ class HumanObjectPeerTestInstance { return null; } - Event[] get_monitor_events() { - if (chain_monitor != null) { - return chain_monitor.as_EventsProvider().get_and_clear_pending_events(); + Event[] get_monitor_events(int expected_len) { + if (use_chan_manager_constructor) { + while (true) { + synchronized (this.pending_manager_events) { + if (expected_len != 0 && this.pending_manager_events.size() == expected_len) { + break; + } + } + if (expected_len == 0) { + try { Thread.sleep(500); } catch (InterruptedException e) { assert false; } + break; + } else { + Thread.yield(); + } + } + synchronized (this.pending_manager_events) { + Event[] res = this.pending_manager_events.toArray(new Event[0]); + this.pending_manager_events.clear(); + assert res.length == expected_len; + return res; + } + } else if (chain_monitor != null) { + ArrayList l = new ArrayList(); + chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add)); + assert l.size() == expected_len; + return l.toArray(new Event[0]); } else { synchronized (monitors) { assert monitors.size() == 1; for (ChannelMonitor mon : monitors.values()) { - return mon.get_and_clear_pending_events(); + Event[] res = mon.get_and_clear_pending_events(); + assert res.length == expected_len; + return res; } return null; } } } - Route get_route(byte[] dest_node, ChannelDetails[] our_chans) { - try (LockedNetworkGraph netgraph = this.router.read_locked_graph()) { - NetworkGraph graph = netgraph.graph(); - long res = bindings.get_route(this.node_id, graph._test_only_get_ptr(), dest_node, 0L, new long[]{our_chans[0]._test_only_get_ptr()}, - new long[0], 1000, 42, this.logger._test_only_get_ptr()); - assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(res); - byte[] serialized_route = bindings.Route_write(bindings.LDKCResult_RouteLightningErrorZ_get_ok(res)); - must_free_objs.add(new WeakReference<>(serialized_route)); - Result_RouteDecodeErrorZ copy = Route.constructor_read(serialized_route); - assert copy instanceof Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK; - bindings.CResult_RouteLightningErrorZ_free(res); - return ((Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK) copy).res; + Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) { + assert expected_len != 0; + if (!use_nio_peer_handler) { + maybe_exchange_peer_messages(peer1, peer2); + } + Event[] res = new Event[0]; + if (use_chan_manager_constructor) { + while (res.length < expected_len) { + synchronized (this.pending_manager_events) { + res = this.pending_manager_events.toArray(res); + assert res.length == expected_len || res.length == 0; // We don't handle partial results + this.pending_manager_events.clear(); + if (res.length < expected_len) { + try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; } + } + } + } + } else { + ArrayList l = new ArrayList(); + while (l.size() < expected_len) { + Thread.yield(); + if (use_nio_peer_handler) { + peer1.nio_peer_handler.check_events(); + peer2.nio_peer_handler.check_events(); + } + chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add)); + assert l.size() == expected_len || l.size() == 0; // We don't handle partial results + } + return l.toArray(new Event[0]); } + assert res.length == expected_len; + return res; } } @@ -424,12 +523,9 @@ class HumanObjectPeerTestInstance { } } }); - void wait_events_processed(Peer peer1, Peer peer2) { - if (use_nio_peer_handler) { - peer1.nio_peer_handler.check_events(); - peer2.nio_peer_handler.check_events(); - try { Thread.sleep(400); } catch (InterruptedException e) { assert false; } - } else { + + void maybe_exchange_peer_messages(Peer peer1, Peer peer2) { + if (!use_nio_peer_handler) { synchronized (runqueue) { ran = false; } @@ -446,6 +542,9 @@ class HumanObjectPeerTestInstance { try { runqueue.wait(); } catch (InterruptedException e) { assert false; } } } + } else if (!use_chan_manager_constructor) { + peer1.nio_peer_handler.check_events(); + peer2.nio_peer_handler.check_events(); } } void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) { @@ -466,6 +565,9 @@ class HumanObjectPeerTestInstance { try { peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100); } catch (IOException e) { assert false; } + while (peer1.peer_manager.get_peer_node_ids().length == 0 || peer2.peer_manager.get_peer_node_ids().length == 0) { + Thread.yield(); + } } else { DescriptorHolder descriptor1 = new DescriptorHolder(); DescriptorHolder descriptor1ref = descriptor1; @@ -499,6 +601,8 @@ class HumanObjectPeerTestInstance { Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2); assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK; do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res); + + maybe_exchange_peer_messages(peer1, peer2); } } @@ -507,14 +611,11 @@ class HumanObjectPeerTestInstance { Peer peer2 = new Peer((byte) 2); connect_peers(peer1, peer2); - wait_events_processed(peer1, peer2); Result_NoneAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 10000, 1000, 42, null); assert cc_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK; - wait_events_processed(peer1, peer2); - Event[] events = peer1.chan_manager_events.get_and_clear_pending_events(); - assert events.length == 1; + Event[] events = peer1.get_manager_events(1, peer1, peer2); assert events[0] instanceof Event.FundingGenerationReady; assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 10000; assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42; @@ -529,13 +630,19 @@ class HumanObjectPeerTestInstance { funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness funding.getInput(0).getWitness().setPush(0, new byte[]{0x1}); funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk)); - peer1.chan_manager.funding_transaction_generated(chan_id, OutPoint.constructor_new(funding.getTxId().getReversedBytes(), (short) 0)); - wait_events_processed(peer1, peer2); + Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, funding.bitcoinSerialize()); + assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK; + + maybe_exchange_peer_messages(peer1, peer2); + synchronized (peer1.broadcast_set) { + while (peer1.broadcast_set.size() != 1) { + peer1.broadcast_set.wait(); + } + } - events = peer1.chan_manager_events.get_and_clear_pending_events(); - assert events.length == 1; - assert events[0] instanceof Event.FundingBroadcastSafe; - assert ((Event.FundingBroadcastSafe) events[0]).user_channel_id == 42; + assert peer1.broadcast_set.size() == 1; + assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize()); + peer1.broadcast_set.clear(); Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding})); peer1.connect_block(b, 1, 0); @@ -546,49 +653,77 @@ class HumanObjectPeerTestInstance { peer1.connect_block(b, height, 0); peer2.connect_block(b, height, 0); } - wait_events_processed(peer1, peer2); + + maybe_exchange_peer_messages(peer1, peer2); + while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1) peer1.chan_manager.list_channels(); - ChannelDetails[] peer1_chans = peer1.chan_manager.list_channels(); - ChannelDetails[] peer2_chans = peer2.chan_manager.list_channels(); + ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels(); + ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels(); assert peer1_chans.length == 1; assert peer2_chans.length == 1; assert peer1_chans[0].get_channel_value_satoshis() == 10000; - assert peer1_chans[0].get_is_live(); + assert peer1_chans[0].get_is_usable(); + Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id(); + assert short_chan_id instanceof Option_u64Z.Some; + assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes()); assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes()); - byte[] payment_preimage = new byte[32]; - for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f); - byte[] payment_hash = Sha256Hash.hash(payment_preimage); - Route route = peer1.get_route(peer2.node_id, peer1_chans); - Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, new byte[32]); + Result_InvoiceSignOrCreationErrorZ invoice = UtilMethods.create_invoice_from_channelmanager(peer2.chan_manager, peer2.keys_interface, Currency.LDKCurrency_Bitcoin, Option_u64Z.none(), "Invoice Description"); + assert invoice instanceof Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK; + System.out.println("Got invoice: " + ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str()); + + Result_InvoiceNoneZ parsed_invoice = Invoice.from_str(((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str()); + assert parsed_invoice instanceof Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK; + assert Arrays.equals(((Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK) parsed_invoice).res.payment_hash(), ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash()); + SignedRawInvoice signed_raw = ((Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK) parsed_invoice).res.into_signed_raw(); + RawInvoice raw_invoice = signed_raw.raw_invoice(); + byte[] desc_hash = raw_invoice.hash(); + Description raw_invoice_description = raw_invoice.description(); + String description_string = raw_invoice_description.into_inner(); + assert description_string.equals("Invoice Description"); + byte[] payment_hash = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash(); + byte[] payment_secret = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret(); + byte[] dest_node_id = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key(); + assert Arrays.equals(dest_node_id, peer2.node_id); + InvoiceFeatures invoice_features = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.features(); + RouteHint[] route_hints = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints(); + + Route route; + try (LockedNetworkGraph netgraph = peer1.router.read_locked_graph()) { + NetworkGraph graph = netgraph.graph(); + Result_RouteLightningErrorZ route_res = UtilMethods.get_route(peer1.chan_manager.get_our_node_id(), graph, peer2.node_id, invoice_features, peer1_chans, route_hints, 1000000, 42, peer1.logger); + assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK; + route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res; + } + + Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, payment_secret); assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK; - wait_events_processed(peer1, peer2); RouteHop[][] hops = new RouteHop[1][1]; byte[] hop_pubkey = new byte[33]; hop_pubkey[0] = 3; hop_pubkey[1] = 42; - hops[0][0] = RouteHop.constructor_new(hop_pubkey, NodeFeatures.constructor_known(), 42, ChannelFeatures.constructor_known(), 100, 0); - Route r2 = Route.constructor_new(hops); - payment_res = peer1.chan_manager.send_payment(r2, payment_hash, new byte[32]); + hops[0][0] = RouteHop.of(hop_pubkey, NodeFeatures.known(), 42, ChannelFeatures.known(), 100, 0); + Route r2 = Route.of(hops); + payment_res = peer1.chan_manager.send_payment(r2, payment_hash, payment_secret); assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err; - assert peer1.get_monitor_events().length == 0; - assert peer2.get_monitor_events().length == 0; - if (reload_peers) { - if (use_nio_peer_handler) { + if (use_chan_manager_constructor) { + peer1.constructor.interrupt(); + peer2.constructor.interrupt(); + } else if (use_nio_peer_handler) { peer1.nio_peer_handler.interrupt(); peer2.nio_peer_handler.interrupt(); } WeakReference op1 = new WeakReference(peer1); peer1 = new Peer(peer1); peer2 = new Peer(peer2); - return new TestState(op1, peer1, peer2, payment_preimage, b.getHash()); + return new TestState(op1, peer1, peer2, b.getHash()); } - return new TestState(null, peer1, peer2, payment_preimage, b.getHash()); + return new TestState(null, peer1, peer2, b.getHash()); } boolean cross_reload_ref_pollution = false; @@ -596,18 +731,16 @@ class HumanObjectPeerTestInstance { private final WeakReference ref_block; private final Peer peer1; private final Peer peer2; - private final byte[] payment_preimage; public Sha256Hash best_blockhash; - public TestState(WeakReference ref_block, Peer peer1, Peer peer2, byte[] payment_preimage, Sha256Hash best_blockhash) { + public TestState(WeakReference ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) { this.ref_block = ref_block; this.peer1 = peer1; this.peer2 = peer2; - this.payment_preimage = payment_preimage; this.best_blockhash = best_blockhash; } } - void do_test_message_handler_b(TestState state) { + void do_test_message_handler_b(TestState state) throws InterruptedException { GcCheck obj = new GcCheck(); if (state.ref_block != null) { // Ensure the original peers get freed before we move on. Note that we have to be in a different function @@ -618,40 +751,55 @@ class HumanObjectPeerTestInstance { } connect_peers(state.peer1, state.peer2); } - wait_events_processed(state.peer1, state.peer2); - Event[] events = state.peer2.chan_manager_events.get_and_clear_pending_events(); - assert events.length == 1; + Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2); assert events[0] instanceof Event.PendingHTLCsForwardable; state.peer2.chan_manager.process_pending_htlc_forwards(); - events = state.peer2.chan_manager_events.get_and_clear_pending_events(); - assert events.length == 1; + events = state.peer2.get_manager_events(1, state.peer1, state.peer2); assert events[0] instanceof Event.PaymentReceived; - state.peer2.chan_manager.claim_funds(state.payment_preimage, new byte[32], ((Event.PaymentReceived) events[0]).amt); - wait_events_processed(state.peer1, state.peer2); + byte[] payment_preimage = ((Event.PaymentReceived)events[0]).payment_preimage; + assert !Arrays.equals(payment_preimage, new byte[32]); + state.peer2.chan_manager.claim_funds(payment_preimage); - events = state.peer1.chan_manager_events.get_and_clear_pending_events(); - assert events.length == 1; + events = state.peer1.get_manager_events(1, state.peer1, state.peer2); assert events[0] instanceof Event.PaymentSent; - assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, state.payment_preimage); - wait_events_processed(state.peer1, state.peer2); + assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage); + + if (use_nio_peer_handler) { + // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an + // HTLC transaction to broadcast below, which requires a bit more time to fully complete the + // commitment-transaction-update dance between both peers. + Thread.sleep(100); + } ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels(); if (nice_close) { Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id()); assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK; - wait_events_processed(state.peer1, state.peer2); + maybe_exchange_peer_messages(state.peer1, state.peer2); + synchronized (state.peer1.broadcast_set) { + while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait(); + } + synchronized (state.peer2.broadcast_set) { + while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait(); + } assert state.peer1.broadcast_set.size() == 1; assert state.peer2.broadcast_set.size() == 1; } else { state.peer1.chan_manager.force_close_all_channels(); - wait_events_processed(state.peer1, state.peer2); + maybe_exchange_peer_messages(state.peer1, state.peer2); + synchronized (state.peer1.broadcast_set) { + while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait(); + } + synchronized (state.peer2.broadcast_set) { + while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait(); + } assert state.peer1.broadcast_set.size() == 1; - assert state.peer2.broadcast_set.size() == 0; + assert state.peer2.broadcast_set.size() == 1; NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET); Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst()); @@ -661,26 +809,49 @@ class HumanObjectPeerTestInstance { if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl assert watch_outputs.length == 1; assert Arrays.equals(watch_outputs[0].a, tx.getTxId().getReversedBytes()); - assert watch_outputs[0].b.length == 1; + assert watch_outputs[0].b.length == 2; + assert watch_outputs[0].b[0].a == 0; + assert watch_outputs[0].b[1].a == 1; } - // This used to be buggy and double-free, so go ahead and fetch them! + for (int i = 11; i < 21; i++) { + b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>()); + state.peer2.connect_block(b, i, 0); + } + + Event[] broadcastable_event = state.peer2.get_monitor_events(1); for (ChannelMonitor mon : state.peer2.monitors.values()) { + // This used to be buggy and double-free, so go ahead and fetch them! byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger); } + assert broadcastable_event.length == 1; + assert broadcastable_event[0] instanceof Event.SpendableOutputs; + if (state.peer2.explicit_keys_manager != null) { + Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, new TxOut[0], new byte[] {0x00}, 253); + assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK; + Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res); + assert built_tx.getOutputs().size() == 1; + assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x00}); + } } if (use_nio_peer_handler) { state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id(), false); - wait_events_processed(state.peer1, state.peer2); - assert state.peer1.peer_manager.get_peer_node_ids().length == 0; - assert state.peer2.peer_manager.get_peer_node_ids().length == 0; + while (state.peer1.peer_manager.get_peer_node_ids().length != 0) Thread.yield(); + while (state.peer2.peer_manager.get_peer_node_ids().length != 0) Thread.yield(); state.peer1.nio_peer_handler.interrupt(); state.peer2.nio_peer_handler.interrupt(); } - assert state.peer1.get_monitor_events().length == 0; - assert state.peer2.get_monitor_events().length == 0; + state.peer1.get_monitor_events(0); + state.peer2.get_monitor_events(0); + + if (use_chan_manager_constructor) { + state.peer1.constructor.interrupt(); + state.peer2.constructor.interrupt(); + } + + t.interrupt(); } java.util.LinkedList> must_free_objs = new java.util.LinkedList(); @@ -696,14 +867,14 @@ class HumanObjectPeerTestInstance { } } public class HumanObjectPeerTest { - HumanObjectPeerTestInstance do_test_run(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler) throws InterruptedException { - HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, !nio_peer_handler); + HumanObjectPeerTestInstance do_test_run(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler, boolean use_chan_manager_constructor) throws InterruptedException { + HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, !nio_peer_handler, use_chan_manager_constructor); HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler(); instance.do_test_message_handler_b(state); return instance; } - void do_test(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler) throws InterruptedException { - HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler); + void do_test(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler, boolean use_chan_manager_constructor) throws InterruptedException { + HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, use_chan_manager_constructor); while (instance.gc_count != instance.gc_exp_count) { System.gc(); System.runFinalization(); @@ -713,19 +884,35 @@ public class HumanObjectPeerTest { } @Test public void test_message_handler() throws InterruptedException { - for (int i = 0; i < (1 << 6) - 1; i++) { - boolean nice_close = (i & (1 << 0)) != 0; - boolean use_km_wrapper = (i & (1 << 1)) != 0; - boolean use_manual_watch = (i & (1 << 2)) != 0; - boolean reload_peers = (i & (1 << 3)) != 0; - boolean break_cross_refs = (i & (1 << 4)) != 0; - boolean nio_peer_handler = (i & (1 << 5)) != 0; + for (int i = 0; i < (1 << 7) - 1; i++) { + boolean nice_close = (i & (1 << 0)) != 0; + boolean use_km_wrapper = (i & (1 << 1)) != 0; + boolean use_manual_watch = (i & (1 << 2)) != 0; + boolean reload_peers = (i & (1 << 3)) != 0; + boolean break_cross_refs = (i & (1 << 4)) != 0; + boolean nio_peer_handler = (i & (1 << 5)) != 0; + boolean use_chan_manager_constructor = (i & (1 << 6)) != 0; if (break_cross_refs && !reload_peers) { // There are no cross refs to break without reloading peers. continue; } + if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) { + // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us. + continue; + } System.err.println("Running test with flags " + i); - do_test(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler); + do_test(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler, use_chan_manager_constructor); + } + } + + // This is used in the test jar to test the built jar is runnable + public static void main(String[] args) { + try { + new HumanObjectPeerTest().test_message_handler(); + } catch (Exception e) { + System.err.println("Caught exception:"); + System.err.println(e); + System.exit(1); } } }