S3Client.logger, content for error does not contain response information

[Frezzaldo]

Checkboxes for prior research

• I've gone through Developer Guide and API reference
• I've checked AWS Forums and StackOverflow.
• I've searched for previous similar issues and didn't find any solution.

Describe the bug

When creating S3Client I provide a logger.

I see that for example content for info log have response information under metadata. But when logging error I cant find the same information. This is the closest information I can find:

{"error":{"$metadata":{"attempts":1,"totalRetryDelay":0}},"metadata":{"attempts":1,"totalRetryDelay":0}}

It would be nice to get more error information like status-code and/or message from server. Something that can actually tell me what the error is.

Regression Issue

• Select this option if this issue appears to be a regression.

SDK version number

@aws-sdk/lib-storage:3.758.0

Which JavaScript Runtime is this issue in?

Browser

Details of the browser/Node.js/ReactNative version

node: v22.11.0, Chrome: 131.0.6778.85

Reproduction Steps

Observed Behavior

Expected Behavior

Possible Solution

No response

Additional Information/Context

No response

[aBurmeseDev]

Hi @Frezzaldo - thanks for reaching out.

Depends on the use case, there are a few ways you can go about:

• use middlewareStack to log request data and metadata by adding it to client. It's like attaching event listeners to each requests and useful when you're debugging errors.
• use Logger for client logging
• a few more error handling mentioned in this docs

Hope it helps!
John

[Frezzaldo]

Its the logger for client I'm using. I would just expect that the error-logger-function would tell me something about the error. Right now it does not tell me anything. The info logger has at least response status code.

[aBurmeseDev]

Which error-logger-function are you referring to? Without seeing your code, I can't tell what you're referring to. Can you share your code snippet?
Have you tried any of those methods shared above?

[Frezzaldo]

import {S3Client} from "@aws-sdk/client-s3";

this.s3Client = new S3Client({
    ...config,
    logger: {
        trace: (content) => console.log(content),
        debug: (content) => console.log(content),
        info: (content) => console.log(content),
        warn: (content) => console.log(content),
        error: (content) => console.log(content)
    }
});

The content for error does not have any information about why its error. No response code or anything.

[aBurmeseDev]

As mentioned in my last comment, either use middlewareStack or Logger console instead:

// Example: turning on SDK client logging, ignoring trace and debug output
//          by using console methods but overriding trace/debug to empty functions.
new S3Client({
  logger: {
    ...console,
    debug(...args) {},
    trace(...args) {},
  },
});

Closing issue, feel free to open a new issue if you need further assistance.