Add config for key-value store connection

src/server/config.rs

@@ -78,10 +78,64 @@ impl DatabaseConnectionConfig {
     }
 }
 
+#[derive(Debug, Clone, Deserialize)]
+#[serde(untagged)]
+enum KeyValStoreConnectionConfig {
+    FromUrl {
+        url: String,
+    },
+    FromParts {
+        scheme: Option<String>,
+        host: String,
+        port: Option<u16>,
+        database: Option<String>,
+        username: Option<String>,
+        password: Option<String>,
+    },
+}
+
+impl KeyValStoreConnectionConfig {
+    /// Convert this configuration into the Redis connection URI
+    pub fn as_uri(&self) -> String {
+        match self {
+            Self::FromUrl { url } => url.clone(),
+            Self::FromParts {
+                scheme,
+                host,
+                port,
+                database,
+                username,
+                password,
+            } => format_uri(
+                scheme.as_deref().unwrap_or("redis"),
+                username,
+                password,
+                host,
+                port,
+                database,
+            ),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct KeyValStoreConfig {
+    #[serde(flatten)]
+    connection: KeyValStoreConnectionConfig,
+}
+
+impl KeyValStoreConfig {
+    /// Get the configured database connection URI
+    pub fn connection_uri(&self) -> String {
+        self.connection.as_uri()
+    }
+}
+
 #[derive(Debug, Clone, Deserialize)]
 /// Top-level application configuration
 pub struct Config {
     pub database: DatabaseConfig,
+    pub key_val_store: KeyValStoreConfig,
 }
 
 /// Parse configuration from the expected files and environment variables