12 unstable releases (5 breaking)
new 0.6.1 | Nov 26, 2024 |
---|---|
0.6.0 | Nov 8, 2024 |
0.5.0 | Jul 22, 2024 |
0.4.1 | Jul 22, 2024 |
0.1.1 | Nov 17, 2023 |
#424 in Network programming
871 downloads per month
Used in 16 crates
(14 directly)
495KB
10K
SLoC
Network is split into 2 parts
- Network and routing tables
- Custom behaviours
Network and routing tables
This part handles the network and routing tables. The logic of routing table is not fixed, instead it is inject into with trait RoutingTable which provide bellow function
pub trait RouterTable: Send + Sync {
fn path_to_node(&self, dest: NodeId) -> RouteAction;
fn path_to_key(&self, key: NodeId) -> RouteAction;
fn path_to_service(&self, service_id: u8) -> RouteAction;
fn path_to(&self, route: &RouteRule, service_id: u8) -> RouteAction {
match route {
RouteRule::Node(dest) => self.path_to_node(*dest),
RouteRule::Closest(key) => self.path_to_key(*key),
RouteRule::Service => self.path_to_service(service_id),
}
}
}
By the way, network providing some based function to sending and handler message:
- Send to other Node by NodeId
- Send to other Node, which served by a service which is identified by service_id
- Send to local Node
Message is sending to other node by routing table and transport
Custom behaviours
By provide a custom behaviour, we can add logic to application with modules style, each that will need to defined some parts:
- Behaviour: defined main logic (this is heart of behaviour), which handle some main event like: new incoming-outgoing connection, connection disconnected,
- Connection Handler: defined logic which handle separate with each connection like: connection event, transport message ...
Each part also can exchanged data with other part by using Agent, which is provide in each function handler
- From behavior to each connections
- From each connection back to behavior
- From each connection to each other connection
For reference bellow is trait of behaviour
pub trait NetworkBehavior<BE, HE, MSG>
where
MSG: Send + Sync,
{
fn service_id(&self) -> u8;
fn on_tick(&mut self, agent: &BehaviorAgent<HE, MSG>, ts_ms: u64, interval_ms: u64);
fn check_incoming_connection(
&mut self,
node: NodeId,
conn_id: ConnId,
) -> Result<(), ConnectionRejectReason>;
fn check_outgoing_connection(
&mut self,
node: NodeId,
conn_id: ConnId,
) -> Result<(), ConnectionRejectReason>;
fn on_incoming_connection_connected(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
conn: Arc<dyn ConnectionSender<MSG>>,
) -> Option<Box<dyn ConnectionHandler<BE, HE, MSG>>>;
fn on_outgoing_connection_connected(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
conn: Arc<dyn ConnectionSender<MSG>>,
) -> Option<Box<dyn ConnectionHandler<BE, HE, MSG>>>;
fn on_incoming_connection_disconnected(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
conn: Arc<dyn ConnectionSender<MSG>>,
);
fn on_outgoing_connection_disconnected(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
conn: Arc<dyn ConnectionSender<MSG>>,
);
fn on_outgoing_connection_error(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
node_id: NodeId,
conn_id: ConnId,
err: &OutgoingConnectionError,
);
fn on_handler_event(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
node_id: NodeId,
conn_id: ConnId,
event: BE,
);
fn on_rpc(
&mut self,
agent: &BehaviorAgent<HE, MSG>,
req: Req,
res: Box<dyn RpcAnswer<Res>>,
) -> bool;
}
Bellow is trait of ConnectionHandler
pub trait ConnectionHandler<BE, HE, MSG>: Send + Sync {
fn on_opened(&mut self, agent: &ConnectionAgent<BE, HE, MSG>);
fn on_tick(&mut self, agent: &ConnectionAgent<BE, HE, MSG>, ts_ms: u64, interval_ms: u64);
fn on_event(&mut self, agent: &ConnectionAgent<BE, HE, MSG>, event: ConnectionEvent<MSG>);
fn on_other_handler_event(
&mut self,
agent: &ConnectionAgent<BE, HE, MSG>,
from_node: NodeId,
from_conn: ConnId,
event: HE,
);
fn on_behavior_event(&mut self, agent: &ConnectionAgent<BE, HE, MSG>, event: HE);
fn on_closed(&mut self, agent: &ConnectionAgent<BE, HE, MSG>);
}
Dependencies
~9–16MB
~216K SLoC