More detailed logging

Author: adborbas

Sources/AlphaSwiftage/Private/AlphaVantageResponseSerializer.swift

@@ -16,19 +16,25 @@ struct AlphaVantageResponseSerializer<T: Decodable>: ResponseSerializer {
             let result = try baseSerializer.serialize(request: request, response: response, data: data, error: error)
             return .success(result)
         } catch {
-            if let data = data {
-                do {
-                    let error = try JSONDecoder().decode(AlphaVantageAPIError.self, from: data)
-                    return .failure(.apiError(error))
-                } catch {
-                    if let response = String(data: data, encoding: .utf8) {
-                        return .failure(.unexpectedResponse(response))
-                    }
+            guard let data = data else {
+                logger.error("Failed to serialise request and returned data is nil. \(error.localizedDescription)")
+                return .failure(.unknown(error))
+            }
+            
+            logger.debug("Failed to serialise request: \(error.localizedDescription).")
+            do {
+                let error = try JSONDecoder().decode(AlphaVantageAPIError.self, from: data)
+                logger.info("API Error: \(error.localizedDescription)")
+                return .failure(.apiError(error))
+            } catch {
+                guard let response = String(data: data, encoding: .utf8) else {
+                    logger.error("Unexpected response not parsable to String.")
                     return .failure(.unknown(error))
                 }
+                
+                logger.error("Unexpected response: \(response).")
+                return .failure(.unexpectedResponse(response))
             }
-            
-            return .failure(.unknown(error))
         }
     }
 }

Sources/AlphaSwiftage/Private/DataRequest+SerializingAlphaVantageResponse.swift

@@ -14,7 +14,9 @@ extension DataRequest {
         do {
             return try await self.serializingResponse(using: AlphaVantageResponseSerializer<T>()).value
         } catch {
-            fatalError("Error should not be thrown from AlphaVantageResponseSerializer but got: \(error.localizedDescription)")
+            let message = "Error should not be thrown from AlphaVantageResponseSerializer but got: \(error.localizedDescription)"
+            logger.critical("\(message)")
+            fatalError(message)
         }
     }
 

Sources/AlphaSwiftage/Private/SwiftLogger.swift

@@ -9,7 +9,7 @@ import Foundation
 import Logging
 import Alamofire
 
-private var logger: Logger = Logger(label: "com.adborbas.alphaswiftage")
+var logger: Logger = Logger(label: "com.adborbas.alphaswiftage")
 
 class SwiftLogger: EventMonitor {
     let queue = DispatchQueue(label: "com.adborbas.alphaswiftage.swiftlogger")