Create snapshot generation test.

diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index eabc7f494adb83df1c18368ddcb4c36fd030009f..bf9448d9f29ca245a46d85f9c726fa81eddbca28 100644 (file)
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -2,7 +2,7 @@
 
 use std::cell::RefCell;
 use std::sync::Arc;
-use std::thread;
+use std::{fs, thread};
 use std::time::{SystemTime, UNIX_EPOCH};
 use bitcoin::{BlockHash, Network};
 use bitcoin::secp256k1::ecdsa::Signature;
@@ -17,6 +17,7 @@ use lightning::util::ser::Writeable;
 use lightning_rapid_gossip_sync::RapidGossipSync;
 use crate::{config, serialize_delta};
 use crate::persistence::GossipPersister;
+use crate::snapshot::Snapshotter;
 use crate::types::{GossipMessage, tests::TestLogger};
 
 const CLIENT_BACKDATE_INTERVAL: u32 = 3600 * 24 * 7; // client backdates RGS by a week
@@ -140,6 +141,26 @@ impl Drop for SchemaSanitizer {
        }
 }
 
+struct CacheSanitizer {}
+
+impl CacheSanitizer {
+       /// The CacheSanitizer instantiation requires that there be a schema sanitizer
+       fn new(_: &SchemaSanitizer) -> Self {
+               Self {}
+       }
+
+       fn cache_path(&self) -> String {
+               format!("./res/{}/", db_test_schema())
+       }
+}
+
+impl Drop for CacheSanitizer {
+       fn drop(&mut self) {
+               let cache_path = self.cache_path();
+               fs::remove_dir_all(cache_path).unwrap();
+       }
+}
+
 
 async fn clean_test_db() {
        let client = crate::connect_to_db().await;
@@ -579,3 +600,109 @@ async fn test_full_snapshot_mutiny_scenario() {
 
        clean_test_db().await;
 }
+
+#[tokio::test]
+async fn test_full_snapshot_persistence() {
+       let schema_sanitizer = SchemaSanitizer::new();
+       let logger = Arc::new(TestLogger::new());
+       let network_graph = NetworkGraph::new(Network::Bitcoin, logger.clone());
+       let network_graph_arc = Arc::new(network_graph);
+       let snapshotter = Snapshotter::new(network_graph_arc.clone(), logger.clone());
+       let cache_sanitizer = CacheSanitizer::new(&schema_sanitizer);
+
+       let short_channel_id = 1;
+       let timestamp = current_time();
+       println!("timestamp: {}", timestamp);
+
+       { // seed the db
+               let (mut persister, receiver) = GossipPersister::new(network_graph_arc.clone(), logger.clone());
+               let announcement = generate_announcement(short_channel_id);
+               network_graph_arc.update_channel_from_announcement_no_lookup(&announcement).unwrap();
+               receiver.send(GossipMessage::ChannelAnnouncement(announcement, None)).await.unwrap();
+
+               { // direction true
+                       let update = generate_update(short_channel_id, true, timestamp, 0, 0, 0, 0, 10);
+                       network_graph_arc.update_channel_unsigned(&update.contents).unwrap();
+                       receiver.send(GossipMessage::ChannelUpdate(update, None)).await.unwrap();
+               }
+
+               { // direction false
+                       let update = generate_update(short_channel_id, false, timestamp - 1, 0, 0, 0, 0, 38);
+                       network_graph_arc.update_channel_unsigned(&update.contents).unwrap();
+                       receiver.send(GossipMessage::ChannelUpdate(update, None)).await.unwrap();
+               }
+
+
+               drop(receiver);
+               persister.persist_gossip().await;
+       }
+
+       let cache_path = cache_sanitizer.cache_path();
+       let symlink_path = format!("{}/symlinks/0.bin", cache_path);
+
+       // generate snapshots
+       {
+               snapshotter.generate_snapshots(20, 5, &[5, u64::MAX], &cache_path, Some(10)).await;
+
+               let symlinked_data = fs::read(&symlink_path).unwrap();
+               let client_graph = NetworkGraph::new(Network::Bitcoin, logger.clone());
+               let client_graph_arc = Arc::new(client_graph);
+
+               let rgs = RapidGossipSync::new(client_graph_arc.clone(), logger.clone());
+               let update_result = rgs.update_network_graph(&symlinked_data).unwrap();
+               // the update result must be a multiple of our snapshot granularity
+               assert_eq!(update_result % config::snapshot_generation_interval(), 0);
+
+               let readonly_graph = client_graph_arc.read_only();
+               let channels = readonly_graph.channels();
+               let client_channel_count = channels.len();
+               assert_eq!(client_channel_count, 1);
+
+               let first_channel = channels.get(&short_channel_id).unwrap();
+               assert!(&first_channel.announcement_message.is_none());
+               // ensure the update in one direction shows the latest fee
+               assert_eq!(first_channel.one_to_two.as_ref().unwrap().fees.proportional_millionths, 38);
+               assert_eq!(first_channel.two_to_one.as_ref().unwrap().fees.proportional_millionths, 10);
+       }
+
+       { // update the db
+               let (mut persister, receiver) = GossipPersister::new(network_graph_arc.clone(), logger.clone());
+
+               { // second update
+                       let update = generate_update(short_channel_id, false, timestamp + 30, 0, 0, 0, 0, 39);
+                       network_graph_arc.update_channel_unsigned(&update.contents).unwrap();
+                       receiver.send(GossipMessage::ChannelUpdate(update, None)).await.unwrap();
+               }
+
+               drop(receiver);
+               persister.persist_gossip().await;
+       }
+
+       // regenerate snapshots
+       {
+               snapshotter.generate_snapshots(20, 5, &[5, u64::MAX], &cache_path, Some(10)).await;
+
+               let symlinked_data = fs::read(&symlink_path).unwrap();
+               let client_graph = NetworkGraph::new(Network::Bitcoin, logger.clone());
+               let client_graph_arc = Arc::new(client_graph);
+
+               let rgs = RapidGossipSync::new(client_graph_arc.clone(), logger.clone());
+               let update_result = rgs.update_network_graph(&symlinked_data).unwrap();
+               // the update result must be a multiple of our snapshot granularity
+               assert_eq!(update_result % config::snapshot_generation_interval(), 0);
+
+               let readonly_graph = client_graph_arc.read_only();
+               let channels = readonly_graph.channels();
+               let client_channel_count = channels.len();
+               assert_eq!(client_channel_count, 1);
+
+               let first_channel = channels.get(&short_channel_id).unwrap();
+               assert!(&first_channel.announcement_message.is_none());
+               // ensure the update in one direction shows the latest fee
+               assert_eq!(first_channel.one_to_two.as_ref().unwrap().fees.proportional_millionths, 39);
+               assert_eq!(first_channel.two_to_one.as_ref().unwrap().fees.proportional_millionths, 10);
+       }
+
+       // clean up afterwards
+       clean_test_db().await;
+}