Prevent returning a full object when that object exceeds the max DDB size, because it will get passed to the caller and that will cause unnecessary extra complexity for the caller.

Author: wparad

src/dynamoDbSafe.js

@@ -116,7 +116,12 @@ class DynamoDB extends DynamoDbOriginal.DocumentClient {
     const capturedStack = { name: 'DynamoDB.update() Error:' };
     Error.captureStackTrace(capturedStack);
     const resultAsync = super.put(params).promise().catch(error => {
-      const wrappedError = new DynamoDbError({ message: error.message, method: 'Put', parameters: originalParams, dynamoDbStack: error.stack }, error.code);
+      // Do not log items that are too bit, it will just become a huge problem for the caller.
+      const loggedParameters = error.code === 'ValidationException' && error.message === 'Item size has exceeded the maximum allowed size'
+        ? { calculatedItemSize: JSON.stringify(originalParams).length }
+        : originalParams
+
+      const wrappedError = new DynamoDbError({ message: error.message, method: 'Put', parameters: loggedParameters, dynamoDbStack: error.stack }, error.code);
       wrappedError.stack = capturedStack;
       throw wrappedError;
     });
@@ -159,7 +164,12 @@ class DynamoDB extends DynamoDbOriginal.DocumentClient {
     const capturedStack = { name: 'DynamoDB.update() Error:' };
     Error.captureStackTrace(capturedStack);
     const resultAsync = super.update(params).promise().catch(error => {
-      const wrappedError = new DynamoDbError({ message: error.message, method: 'Update', parameters: originalParams, dynamoDbStack: error.stack }, error.code);
+      // Do not log items that are too bit, it will just become a huge problem for the caller.
+      const loggedParameters = error.code === 'ValidationException' && error.message === 'Item size has exceeded the maximum allowed size'
+        ? { calculatedItemSize: JSON.stringify(originalParams).length }
+        : originalParams
+
+      const wrappedError = new DynamoDbError({ message: error.message, method: 'Update', parameters: loggedParameters, dynamoDbStack: error.stack }, error.code);
       wrappedError.stack = capturedStack;
       throw wrappedError;
     });