Fix/redis batch import (#42)

* fix: import model keys from redis cache in batches

* fix: tests

Author: ankurdubey521

crates/routing-engine/src/indexer.rs

@@ -352,7 +352,10 @@ mod tests {
             todo!()
         }
 
-        async fn get_all_key_values(&self) -> Result<HashMap<String, String>, RedisClientError> {
+        async fn get_all_key_values(
+            &self,
+            _: Option<usize>,
+        ) -> Result<HashMap<String, String>, RedisClientError> {
             todo!()
         }
     }

crates/routing-engine/src/routing_engine.rs

@@ -19,6 +19,8 @@ use crate::{
 use crate::token_price::TokenPriceProvider;
 use crate::token_price::utils::{Errors, get_token_price};
 
+const FETCH_REDIS_KEYS_BATCH_SIZE: usize = 50;
+
 /// (from_chain, to_chain, from_token, to_token)
 #[derive(Debug)]
 struct PathQuery(u32, u32, String, String);
@@ -87,7 +89,7 @@ impl<PriceProvider: TokenPriceProvider> RoutingEngine<PriceProvider> {
 
     /// Refresh the cache from Redis
     pub async fn refresh_cache(&self) {
-        match self.redis_client.get_all_key_values().await {
+        match self.redis_client.get_all_key_values(Some(FETCH_REDIS_KEYS_BATCH_SIZE)).await {
             Ok(kv_pairs) => {
                 info!("Refreshing cache from Redis.");
                 let mut cache = self.cache.write().await;
@@ -418,7 +420,10 @@ mod tests {
             unimplemented!()
         }
 
-        async fn get_all_key_values(&self) -> Result<HashMap<String, String>, RedisClientError> {
+        async fn get_all_key_values(
+            &self,
+            _: Option<usize>,
+        ) -> Result<HashMap<String, String>, RedisClientError> {
             unimplemented!()
         }
     }

crates/routing-engine/src/settlement_engine.rs

@@ -488,7 +488,10 @@ mod tests {
             unimplemented!()
         }
 
-        async fn get_all_key_values(&self) -> Result<HashMap<String, String>, RedisClientError> {
+        async fn get_all_key_values(
+            &self,
+            _: Option<usize>,
+        ) -> Result<HashMap<String, String>, RedisClientError> {
             unimplemented!()
         }
     }

crates/routing-engine/src/token_price/coingecko.rs

@@ -144,10 +144,10 @@ mod tests {
 
     use async_trait::async_trait;
     use derive_more::Display;
+    use serial_test::serial;
     use thiserror::Error;
 
     use config::{Config, get_sample_config};
-    use serial_test::serial;
     use storage::{KeyValueStore, RedisClientError};
 
     use crate::CoingeckoClient;
@@ -192,7 +192,10 @@ mod tests {
             unimplemented!()
         }
 
-        async fn get_all_key_values(&self) -> Result<HashMap<String, String>, RedisClientError> {
+        async fn get_all_key_values(
+            &self,
+            _: Option<usize>,
+        ) -> Result<HashMap<String, String>, RedisClientError> {
             unimplemented!()
         }
     }

crates/storage/src/lib.rs

@@ -27,7 +27,10 @@ pub trait KeyValueStore: Debug + Send + Sync {
 
     async fn get_all_keys(&self) -> Result<Vec<String>, RedisClientError>;
 
-    async fn get_all_key_values(&self) -> Result<HashMap<String, String>, RedisClientError>;
+    async fn get_all_key_values(
+        &self,
+        batch_size: Option<usize>,
+    ) -> Result<HashMap<String, String>, RedisClientError>;
 }
 
 #[async_trait]

crates/storage/src/redis_client.rs

@@ -58,10 +58,19 @@ impl KeyValueStore for RedisClient {
         Ok(keys)
     }
 
-    async fn get_all_key_values(&self) -> Result<HashMap<String, String>, RedisClientError> {
+    async fn get_all_key_values(
+        &self,
+        batch_size: Option<usize>,
+    ) -> Result<HashMap<String, String>, RedisClientError> {
         info!("Fetching all key-value pairs");
         let keys = self.get_all_keys().await?;
-        let values: Vec<String> = self.connection.clone().mget(&keys).await?;
+
+        let batch_size = batch_size.unwrap_or(keys.len());
+        let mut values = Vec::new();
+        for batch in keys.chunks(batch_size) {
+            values.extend(self.connection.clone().mget::<'_, _, Vec<_>>(batch).await?.into_iter());
+        }
+
         let kv_pairs = keys.into_iter().zip(values.into_iter()).collect();
         Ok(kv_pairs)
     }
@@ -167,7 +176,7 @@ mod tests {
             .unwrap();
 
         // Fetch all key-values
-        let key_values = client.get_all_key_values().await.unwrap();
+        let key_values = client.get_all_key_values(None).await.unwrap();
 
         assert_eq!(key_values.get("key1").unwrap(), "value1");
         assert_eq!(key_values.get("key2").unwrap(), "value2");