refactor(drainer): removed router dependency from drainer (#209)

crates/drainer/src/errors.rs

@@ -1,19 +1,26 @@
+use redis_interface as redis;
 use thiserror::Error;
 
 #[derive(Debug, Error)]
 pub enum DrainerError {
     #[error("Error in parsing config : {0}")]
     ConfigParsingError(String),
-    #[error("Error fetching stream length for stream : {0}")]
-    StreamGetLengthError(String),
-    #[error("Error reading from stream : {0}")]
-    StreamReadError(String),
-    #[error("Error triming from stream: {0}")]
-    StreamTrimFailed(String),
-    #[error("No entries found for stream: {0}")]
-    NoStreamEntry(String),
-    #[error("Error in making stream: {0} available")]
-    DeleteKeyFailed(String),
+    #[error("Error during redis operation : {0}")]
+    RedisError(error_stack::Report<redis::errors::RedisError>),
+    #[error("Application configuration error: {0}")]
+    ConfigurationError(config::ConfigError),
 }
 
 pub type DrainerResult<T> = error_stack::Result<T, DrainerError>;
+
+impl From<config::ConfigError> for DrainerError {
+    fn from(err: config::ConfigError) -> Self {
+        Self::ConfigurationError(err)
+    }
+}
+
+impl From<error_stack::Report<redis::errors::RedisError>> for DrainerError {
+    fn from(err: error_stack::Report<redis::errors::RedisError>) -> Self {
+        Self::RedisError(err)
+    }
+}