last_update_before_seen: None,
mutated_properties: MutatedProperties::default(),
latest_update_after_seen: None,
- serialization_update_flags: None
+ serialization_update_flags: None,
}
}
}
});
}
- println!("Annotating channel announcements whose oldest channel update in a given direction occurred after the last sync");
- /// Steps:
- /// — Obtain all updates, distinct by (scid, direction), ordered by seen DESC // to find the oldest update in a given direction
- /// — From those updates, select distinct by (scid), ordered by seen DESC (to obtain the newer one per direction)
- /// This will allow us to mark the first time updates in both directions were seen
-
- // here is where the channels whose first update in either direction occurred after
- // `last_seen_timestamp` are added to the selection
- let newer_oldest_directional_updates = client.query("
- SELECT DISTINCT ON (short_channel_id) *
- FROM (
- SELECT DISTINCT ON (short_channel_id, direction) blob_signed
- FROM channel_updates
- WHERE short_channel_id = any($1)
- ORDER BY seen ASC, short_channel_id ASC, direction ASC
- ) AS directional_last_seens
- ORDER BY short_channel_id ASC, seen DESC
- ", &[&channel_ids]).await.unwrap();
-
- for current_row in newer_oldest_directional_updates {
- let blob: Vec<u8> = current_row.get("blob_signed");
- let mut readable = Cursor::new(blob);
- let unsigned_update = ChannelUpdate::read(&mut readable).unwrap().contents;
- let scid = unsigned_update.short_channel_id;
- let current_seen_timestamp_object: SystemTime = current_row.get("seen");
- let current_seen_timestamp: u32 = current_seen_timestamp_object.duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs() as u32;
-
- if current_seen_timestamp > last_sync_timestamp {
- // the newer of the two oldest seen directional updates came after last sync timestamp
- let current_channel_delta = delta_set.entry(scid).or_insert(ChannelDelta::default());
- // first time a channel was seen in both directions
- (*current_channel_delta).first_bidirectional_updates_seen = Some(current_seen_timestamp);
+ {
+ // THIS STEP IS USED TO DETERMINE IF A CHANNEL SHOULD BE OMITTED FROM THE DELTA
+
+ println!("Annotating channel announcements whose oldest channel update in a given direction occurred after the last sync");
+ // Steps:
+ // — Obtain all updates, distinct by (scid, direction), ordered by seen DESC // to find the oldest update in a given direction
+ // — From those updates, select distinct by (scid), ordered by seen DESC (to obtain the newer one per direction)
+ // This will allow us to mark the first time updates in both directions were seen
+
+ // here is where the channels whose first update in either direction occurred after
+ // `last_seen_timestamp` are added to the selection
+ let newer_oldest_directional_updates = client.query("
+ SELECT DISTINCT ON (short_channel_id) *
+ FROM (
+ SELECT DISTINCT ON (short_channel_id, direction) short_channel_id, seen
+ FROM channel_updates
+ WHERE short_channel_id = any($1)
+ ORDER BY seen ASC, short_channel_id ASC, direction ASC
+ ) AS directional_last_seens
+ ORDER BY short_channel_id ASC, seen DESC
+ ", &[&channel_ids]).await.unwrap();
+
+ for current_row in newer_oldest_directional_updates {
+ let scid: i64 = current_row.get("short_channel_id");
+ let current_seen_timestamp_object: SystemTime = current_row.get("seen");
+ let current_seen_timestamp: u32 = current_seen_timestamp_object.duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs() as u32;
+
+ if current_seen_timestamp > last_sync_timestamp {
+ // the newer of the two oldest seen directional updates came after last sync timestamp
+ let current_channel_delta = delta_set.entry(scid as u64).or_insert(ChannelDelta::default());
+ // first time a channel was seen in both directions
+ (*current_channel_delta).first_bidirectional_updates_seen = Some(current_seen_timestamp);
+ }
}
}
- println!("Annotating channel announcements whose latest channel update in a given direction occurred more than six days ago");
- /// Steps:
- /// — Obtain all updates, distinct by (scid, direction), ordered by seen DESC
- /// — From those updates, select distinct by (scid), ordered by seen ASC (to obtain the older one per direction)
- let current_timestamp = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs() as u32;
- let reminder_threshold_timestamp = current_timestamp.saturating_sub(config::CHANNEL_REMINDER_AGE);
- let read_only_graph = network_graph.read_only();
-
- let older_latest_directional_updates = client.query("
- SELECT DISTINCT ON (short_channel_id) *
- FROM (
- SELECT DISTINCT ON (short_channel_id, direction) *
- FROM channel_updates
- WHERE short_channel_id = any($1)
- ORDER BY short_channel_id ASC, direction ASC, seen DESC
- ) AS directional_last_seens
- ORDER BY short_channel_id ASC, seen ASC
- ", &[&channel_ids]).await.unwrap();
-
- for current_row in older_latest_directional_updates {
- let blob: Vec<u8> = current_row.get("blob_signed");
- let mut readable = Cursor::new(blob);
- let unsigned_update = ChannelUpdate::read(&mut readable).unwrap().contents;
- let scid = unsigned_update.short_channel_id;
- let current_seen_timestamp_object: SystemTime = current_row.get("seen");
- let current_seen_timestamp: u32 = current_seen_timestamp_object.duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs() as u32;
-
- if current_seen_timestamp <= reminder_threshold_timestamp {
- // annotate this channel as requiring that reminders be sent to the client
- let current_channel_delta = delta_set.entry(scid).or_insert(ChannelDelta::default());
-
- // way might be able to get away with not using this
- (*current_channel_delta).requires_reminder = true;
+ {
+ // THIS STEP IS USED TO DETERMINE IF A REMINDER UPDATE SHOULD BE SENT
- let current_channel_info = read_only_graph.channel(scid).unwrap();
- if let Some(info) = current_channel_info.one_to_two.as_ref() {
- let flags: u8 = if info.enabled { 0 } else { 2 };
- let current_update = (*current_channel_delta).updates.0.get_or_insert(DirectedUpdateDelta::default());
- current_update.serialization_update_flags = Some(flags);
- }
+ println!("Annotating channel announcements whose latest channel update in a given direction occurred more than six days ago");
+ // Steps:
+ // — Obtain all updates, distinct by (scid, direction), ordered by seen DESC
+ // — From those updates, select distinct by (scid), ordered by seen ASC (to obtain the older one per direction)
+ let current_timestamp = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs() as u32;
+ let reminder_threshold_timestamp = current_timestamp.saturating_sub(config::CHANNEL_REMINDER_AGE);
+ let read_only_graph = network_graph.read_only();
- if let Some(info) = current_channel_info.two_to_one.as_ref() {
- let flags: u8 = if info.enabled { 1 } else { 3 };
- let current_update = (*current_channel_delta).updates.1.get_or_insert(DirectedUpdateDelta::default());
- current_update.serialization_update_flags = Some(flags);
+ let older_latest_directional_updates = client.query("
+ SELECT DISTINCT ON (short_channel_id) *
+ FROM (
+ SELECT DISTINCT ON (short_channel_id, direction) short_channel_id, seen
+ FROM channel_updates
+ WHERE short_channel_id = any($1)
+ ORDER BY short_channel_id ASC, direction ASC, seen DESC
+ ) AS directional_last_seens
+ ORDER BY short_channel_id ASC, seen ASC
+ ", &[&channel_ids]).await.unwrap();
+
+ for current_row in older_latest_directional_updates {
+ let scid: i64 = current_row.get("short_channel_id");
+ let current_seen_timestamp_object: SystemTime = current_row.get("seen");
+ let current_seen_timestamp: u32 = current_seen_timestamp_object.duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs() as u32;
+
+ if current_seen_timestamp <= reminder_threshold_timestamp {
+ // annotate this channel as requiring that reminders be sent to the client
+ let current_channel_delta = delta_set.entry(scid as u64).or_insert(ChannelDelta::default());
+
+ // way might be able to get away with not using this
+ (*current_channel_delta).requires_reminder = true;
+
+ if let Some(current_channel_info) = read_only_graph.channel(scid as u64) {
+ if current_channel_info.one_to_two.is_none() || current_channel_info.two_to_one.is_none() {
+ // we don't send reminders if we don't have bidirectional update data
+ continue;
+ }
+
+ if let Some(info) = current_channel_info.one_to_two.as_ref() {
+ let flags: u8 = if info.enabled { 0 } else { 2 };
+ let current_update = (*current_channel_delta).updates.0.get_or_insert(DirectedUpdateDelta::default());
+ current_update.serialization_update_flags = Some(flags);
+ }
+
+ if let Some(info) = current_channel_info.two_to_one.as_ref() {
+ let flags: u8 = if info.enabled { 1 } else { 3 };
+ let current_update = (*current_channel_delta).updates.1.get_or_insert(DirectedUpdateDelta::default());
+ current_update.serialization_update_flags = Some(flags);
+ }
+ } else {
+ // we don't send reminders if we don't have the channel
+ continue;
+ }
}
}
}
// get the latest channel update in each direction prior to last_sync_timestamp, provided
// there was an update in either direction that happened after the last sync (to avoid
// collecting too many reference updates)
- let reference_rows = client.query("SELECT DISTINCT ON (short_channel_id, direction) id, direction, blob_signed FROM channel_updates WHERE seen < $1 AND short_channel_id IN (SELECT short_channel_id FROM channel_updates WHERE seen >= $1 GROUP BY short_channel_id) ORDER BY short_channel_id ASC, direction ASC, seen DESC", &[&last_sync_timestamp_object]).await.unwrap();
+ let reference_rows = client.query("
+ SELECT DISTINCT ON (short_channel_id, direction) id, direction, blob_signed
+ FROM channel_updates
+ WHERE seen < $1 AND short_channel_id IN (
+ SELECT short_channel_id
+ FROM channel_updates
+ WHERE seen >= $1
+ GROUP BY short_channel_id
+ )
+ ORDER BY short_channel_id ASC, direction ASC, seen DESC
+ ", &[&last_sync_timestamp_object]).await.unwrap();
println!("Fetched reference rows ({}): {:?}", reference_rows.len(), start.elapsed());
intermediate_update_prefix = "DISTINCT ON (short_channel_id, direction)";
}
- let query_string = format!("SELECT {} id, direction, blob_signed, seen FROM channel_updates WHERE seen >= $1 ORDER BY short_channel_id ASC, direction ASC, seen DESC", intermediate_update_prefix);
+ let query_string = format!("
+ SELECT {} id, direction, blob_signed, seen
+ FROM channel_updates
+ WHERE seen >= $1
+ ORDER BY short_channel_id ASC, direction ASC, seen DESC
+ ", intermediate_update_prefix);
let intermediate_updates = client.query(&query_string, &[&last_sync_timestamp_object]).await.unwrap();
println!("Fetched intermediate rows ({}): {:?}", intermediate_updates.len(), start.elapsed());
projects / rapid-gossip-sync-server / blobdiff