wip: broken state

backend/public/Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -59,6 +59,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "arc-swap"
+version = "1.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69f7f8c3906b62b754cd5326047894316021dcfe5a194c8ea52bdd94934a3457"
+
 [[package]]
 name = "async-trait"
 version = "0.1.82"
@@ -209,6 +215,16 @@ version = "1.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "428d9aa8fbc0670b7b8d6030a7fadd0f86151cae55e4dbbece15f3780a3dfaf3"
 
+[[package]]
+name = "bytes-utils"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dafe3a8757b027e2be6e4e5601ed563c55989fcf1546e933c66c8eb3a058d35"
+dependencies = [
+ "bytes",
+ "either",
+]
+
 [[package]]
 name = "cc"
 version = "1.1.21"
@@ -253,6 +269,12 @@ version = "0.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
 
+[[package]]
+name = "cookie-factory"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "396de984970346b0d9e93d1415082923c679e5ae5c3ee3dcbd104f5610af126b"
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -283,6 +305,12 @@ version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
 
+[[package]]
+name = "crc16"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "338089f42c427b86394a5ee60ff321da23a5c89c9d89514c829687b26359fcff"
+
 [[package]]
 name = "crossbeam-queue"
 version = "0.3.11"
@@ -403,6 +431,15 @@ version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e8c02a5121d4ea3eb16a80748c74f5549a5665e4c21333c6098f283870fbdea6"
 
+[[package]]
+name = "float-cmp"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b09cf3155332e944990140d967ff5eceb70df778b34f77d8075db46e4704e6d8"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "flume"
 version = "0.11.0"
@@ -439,6 +476,43 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "fred"
+version = "10.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a7b2fd0f08b23315c13b6156f971aeedb6f75fb16a29ac1872d2eabccc1490e"
+dependencies = [
+ "arc-swap",
+ "async-trait",
+ "bytes",
+ "bytes-utils",
+ "float-cmp",
+ "fred-macros",
+ "futures",
+ "log",
+ "parking_lot",
+ "rand",
+ "redis-protocol",
+ "semver",
+ "socket2",
+ "tokio",
+ "tokio-stream",
+ "tokio-util",
+ "url",
+ "urlencoding",
+]
+
+[[package]]
+name = "fred-macros"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1458c6e22d36d61507034d5afecc64f105c1d39712b7ac6ec3b352c423f715cc"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "futures"
 version = "0.3.30"
@@ -1180,6 +1254,7 @@ dependencies = [
  "axum",
  "chrono",
  "dotenvy",
+ "fred",
  "serde",
  "serde_json",
  "sqlx",
@@ -1254,6 +1329,20 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "redis-protocol"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cdba59219406899220fc4cdfd17a95191ba9c9afb719b5fa5a083d63109a9f1"
+dependencies = [
+ "bytes",
+ "bytes-utils",
+ "cookie-factory",
+ "crc16",
+ "log",
+ "nom",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.5.4"
@@ -1420,6 +1509,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "semver"
+version = "1.0.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56e6fa9c48d24d85fb3de5ad847117517440f6beceb7798af16b4a87d616b8d0"
+
 [[package]]
 name = "serde"
 version = "1.0.210"
@@ -2142,6 +2237,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "urlencoding"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
+
 [[package]]
 name = "valuable"
 version = "0.1.0"

backend/public/Cargo.toml

@@ -24,3 +24,4 @@ serde = "1.0.210"
 serde_json = "1.0.128"
 chrono = "0.4.38"
 xml = "0.8.20"
+fred = "10.1.0"

backend/public/src/main.rs

@@ -16,12 +16,9 @@ use tracing_subscriber::{filter, layer::SubscriberExt, prelude::*, util::Subscri
 mod config;
 mod datasources;
 mod routes;
+mod state;
 mod utils;
 
-pub struct AppState {
-    db: PgPool,
-}
-
 #[tokio::main]
 async fn main() {
     // setting up configuration

backend/public/src/state.rs

@@ -0,0 +1,73 @@
+use fred::interfaces::KeysInterface;
+use fred::{clients::Pool, prelude::*};
+use serde_json::Value;
+use sqlx::PgPool;
+
+pub type AppState = std::sync::Arc<tokio::sync::Mutex<AppInternalState>>;
+
+pub struct AppInternalState {
+    pub database: sqlx::postgres::PgPool,
+    pub cache: Cache,
+}
+
+pub struct Cache {
+    pub inmem: Pool,
+}
+
+impl AppInternalState {
+    pub fn new(database: PgPool, cache: Pool) -> Self {
+        AppInternalState {
+            database,
+            cache: Cache { inmem: cache },
+        }
+    }
+}
+
+impl Cache {
+    pub async fn get<T>(&mut self, key: String) -> Result<Option<T>, Box<dyn std::error::Error>>
+    where
+        T: for<'de> serde::Deserialize<'de>,
+    {
+        if !self.inmem.is_connected() {
+            return Err(Box::new("Are you connected to the cache?".into()));
+        }
+
+        let value: Option<Value> = self.inmem.get(key).await?;
+
+        let result = match value {
+            Some(x) => match serde_json::from_value(x) {
+                Ok(x) => Some(x),
+                Err(_) => None,
+            },
+            None => None,
+        };
+        Ok(result)
+    }
+
+    pub async fn set<T>(
+        &mut self,
+        key: String,
+        contents: &T,
+        expiration: Option<Expiration>,
+        set_opts: Option<SetOptions>,
+        get: bool,
+    ) -> Result<(), Box<dyn std::error::Error>>
+    where
+        T: for<'de> serde::Deserialize<'de>,
+    {
+        if !self.inmem.is_connected() {
+            return Err(Box::new("Are you connected to the cache?".into()));
+        }
+
+        let value: Value = serde_json::to_value(contents)?;
+        self.inmem
+            .set(key, value.to_string(), expiration, set_opts, get)
+            .await?;
+        Ok(())
+    }
+
+    pub async fn del(&mut self, key: String) -> Result<(), Box<dyn std::error::Error>> {
+        self.inmem.del(key).await?;
+        Ok(())
+    }
+}