Connect peers independently.

[rapid-gossip-sync-server] / src / config.rs

diff --git a/src/config.rs b/src/config.rs
index db6d2ef7a243d69de87d41963d3087f3543cb88c..1de248220bd617057e4ccba5f55f34e2737cdd2f 100644 (file)
--- a/src/config.rs
+++ b/src/config.rs
@@ -16,13 +16,28 @@ use lightning_block_sync::http::HttpEndpoint;
 use tokio_postgres::Config;
 
 pub(crate) const SCHEMA_VERSION: i32 = 12;
-pub(crate) const SNAPSHOT_CALCULATION_INTERVAL: u32 = 3600 * 24; // every 24 hours, in seconds
+pub(crate) const SYMLINK_GRANULARITY_INTERVAL: u32 = 3600 * 3; // three hours
+pub(crate) const MAX_SNAPSHOT_SCOPE: u32 = 3600 * 24 * 21; // three weeks
+// generate symlinks based on a 3-hour-granularity
 /// If the last update in either direction was more than six days ago, we send a reminder
 /// That reminder may be either in the form of a channel announcement, or in the form of empty
 /// updates in both directions.
 pub(crate) const CHANNEL_REMINDER_AGE: Duration = Duration::from_secs(6 * 24 * 60 * 60);
+/// The number of successful peer connections to await prior to continuing to gossip storage.
+/// The application will still work if the number of specified peers is lower, as long as there is
+/// at least one successful peer connection, but it may result in long startup times.
+pub(crate) const CONNECTED_PEER_ASSERTION_LIMIT: usize = 5;
 pub(crate) const DOWNLOAD_NEW_GOSSIP: bool = true;
 
+pub(crate) fn snapshot_generation_interval() -> u32 {
+       let interval = env::var("RAPID_GOSSIP_SYNC_SERVER_SNAPSHOT_INTERVAL").unwrap_or(SYMLINK_GRANULARITY_INTERVAL.to_string())
+               .parse::<u32>()
+               .expect("RAPID_GOSSIP_SYNC_SERVER_SNAPSHOT_INTERVAL env variable must be a u32.");
+       assert!(interval > 0, "RAPID_GOSSIP_SYNC_SERVER_SNAPSHOT_INTERVAL must be positive");
+       assert_eq!(interval % SYMLINK_GRANULARITY_INTERVAL, 0, "RAPID_GOSSIP_SYNC_SERVER_SNAPSHOT_INTERVAL must be a multiple of {} (seconds)", SYMLINK_GRANULARITY_INTERVAL);
+       interval
+}
+
 pub(crate) fn network() -> Network {
        let network = env::var("RAPID_GOSSIP_SYNC_SERVER_NETWORK").unwrap_or("bitcoin".to_string()).to_lowercase();
        match network.as_str() {
@@ -161,7 +176,7 @@ pub(crate) async fn upgrade_db(schema: i32, client: &mut tokio_postgres::Client)
                                        tx_ref.execute("UPDATE channel_updates SET short_channel_id = $1, direction = $2 WHERE id = $3", &[&scid, &direction, &id]).await.unwrap();
                                });
                        }
-                       while let Some(_) = updates.next().await { }
+                       while let Some(_) = updates.next().await {}
                }
                tx.execute("ALTER TABLE channel_updates ALTER short_channel_id DROP DEFAULT", &[]).await.unwrap();
                tx.execute("ALTER TABLE channel_updates ALTER short_channel_id SET NOT NULL", &[]).await.unwrap();
@@ -188,7 +203,7 @@ pub(crate) async fn upgrade_db(schema: i32, client: &mut tokio_postgres::Client)
                                        tx_ref.execute("UPDATE channel_announcements SET short_channel_id = $1 WHERE id = $2", &[&scid, &id]).await.unwrap();
                                });
                        }
-                       while let Some(_) = updates.next().await { }
+                       while let Some(_) = updates.next().await {}
                }
                tx.execute("ALTER TABLE channel_announcements ADD CONSTRAINT channel_announcements_short_channel_id_key UNIQUE (short_channel_id)", &[]).await.unwrap();
                tx.execute("ALTER TABLE channel_announcements ALTER short_channel_id DROP DEFAULT", &[]).await.unwrap();