route topics

haesli_core/Cargo.toml

@@ -10,7 +10,7 @@ haesli_datastructure = { path = "../haesli_datastructure" }
 bytes = "1.1.0"
 parking_lot = "0.12.0"
 rand = "0.8.5"
-tinyvec = { version = "1.5.1", features = ["alloc", "rustc_1_55"] }
+smallvec = { version = "1.8.0", features = ["union"] }
 thiserror = "1.0.30"
 tokio = { version = "1.17.0", features = ["sync"] }
 uuid = "0.8.2"

haesli_core/src/connection.rs

@@ -7,13 +7,12 @@ use std::{
 
 use bytes::Bytes;
 use parking_lot::Mutex;
-use tinyvec::TinyVec;
 use tokio::sync::mpsc;
 
 use crate::{
     consumer::Consumer,
     methods::{self, Method},
-    newtype_id, GlobalData, Queue,
+    newtype_id, GlobalData, Queue, SingleVec,
 };
 
 newtype_id!(pub ConnectionId);
@@ -67,7 +66,7 @@ pub struct ConnectionInner {
 pub enum ConnectionEvent {
     Shutdown,
     Method(ChannelNum, Box<Method>),
-    MethodContent(ChannelNum, Box<Method>, ContentHeader, TinyVec<[Bytes; 1]>),
+    MethodContent(ChannelNum, Box<Method>, ContentHeader, SingleVec<Bytes>),
 }
 
 pub type ConEventSender = mpsc::Sender<ConnectionEvent>;

haesli_core/src/exchange.rs

@@ -2,6 +2,13 @@ use std::{borrow::Borrow, collections::HashMap, sync::Arc};
 
 use crate::{newtype, Queue};
 
+#[derive(Debug)]
+pub enum TopicSegment {
+    Word(String),
+    SingleWildcard,
+    MultiWildcard,
+} 
+
 #[derive(Debug)]
 pub enum ExchangeType {
     /// Routes a message to a queue if the routing-keys are equal
@@ -9,7 +16,7 @@ pub enum ExchangeType {
     /// Always routes the message to a queue
     Fanout { bindings: Vec<Queue> },
     /// Routes a message to a queue if the routing key matches the pattern
-    Topic { bindings: Vec<(String, Queue)> },
+    Topic { bindings: Vec<(Vec<TopicSegment>, Queue)> },
     /// Is bound with a table of headers and values, and matches if the message headers
     /// match up with the binding headers
     ///

haesli_core/src/lib.rs

@@ -25,6 +25,8 @@ use crate::{
     queue::{Queue, QueueName},
 };
 
+pub type SingleVec<T> = smallvec::SmallVec<[T; 1]>;
+
 #[derive(Clone)]
 // todo: what if this was downstream?
 pub struct GlobalData {

haesli_core/src/message.rs

@@ -1,9 +1,8 @@
 use std::sync::Arc;
 
 use bytes::Bytes;
-use tinyvec::TinyVec;
 
-use crate::{connection::ContentHeader, newtype_id};
+use crate::{connection::ContentHeader, newtype_id, SingleVec};
 
 pub type Message = Arc<MessageInner>;
 
@@ -14,7 +13,7 @@ pub struct MessageInner {
     pub id: MessageId,
     pub header: ContentHeader,
     pub routing: RoutingInformation,
-    pub content: TinyVec<[Bytes; 1]>,
+    pub content: SingleVec<Bytes>,
 }
 
 #[derive(Debug)]