AWSCloudWatchProvider fails to log to a brand-new log stream

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JavaScript Framework

React

Amplify APIs

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Amplify Categories

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Environment information

Put output below this line

System: OS: Linux 5.10 Ubuntu 20.04.3 LTS (Focal Fossa) CPU: (12) x64 Intel® Core™ i7-10750H CPU @ 2.60GHz Memory: 9.66 GB / 12.33 GB Container: Yes Shell: 5.0.17 - /bin/bash Binaries: Node: 14.17.5 - /usr/bin/node Yarn: 1.22.11 - /mnt/c/Users/iblis/AppData/Roaming/npm/yarn npm: 6.14.14 - /usr/bin/npm npmGlobalPackages: aws-cdk: 1.122.0 npm: 6.14.14

Describe the bug

AWSCloudWatchProvider (packages/core/src/Providers/AWSCloudWatchProvider.ts) throws the following errors when sending logs to a brand new stream.

API Response

{"__type":"InvalidParameterException","message":"1 validation error detected: Value '' at 'sequenceToken' failed to satisfy constraint: Member must have length greater than or equal to 1"}

When I call the CloudWatch API directly without a token to initialize the first stream message, the provider works.

Expected behavior

AWSCloudWatchProvider shouldn’t be initializing _nextSequenceToken to empty string. The value should be undefined.

Original Line: 379 this._nextSequenceToken = logStream.uploadSequenceToken || '';

Requested Changes: this._nextSequenceToken = logStream.uploadSequenceToken || undefined;

Reproduction steps

1. Create a new aws-amplify logger
2. Add Pluggable: AWSCloudWatchProvider with a non-existing stream name
3. Attempt to log an entry

Code Snippet

const logger = new Logger('test', 'DEBUG);
logger.addPluggable(
    new AWSCloudWatchProvider({
      logGroupName: `/app/dev`,
      logStreamName: 'brand-new-stream',
      region: 'us-east-2`,
    })
  );

logger.debug('hello');

Log output

**API Response** ``` {"__type":"InvalidParameterException","message":"1 validation error detected: Value '' at 'sequenceToken' failed to satisfy constraint: Member must have length greater than or equal to 1"} ```

Log Output

31:07.130 AWSCloudWatch - failure during log push: InvalidParameterException: 1 validation error detected: Value '' at 'sequenceToken' failed to satisfy constraint: Member must have length greater than or equal to 1

31:07.130 AWSCloudWatch - error during _safeUploadLogEvents: TypeError: Cannot read properties of undefined (reading 'nextSequenceToken')

[ERROR] 31:07.130 AWSCloudWatch - error when calling _safeUploadLogEvents in the timer interval - TypeError: Cannot read properties of undefined (reading 'nextSequenceToken')

aws-exports.js

No response

Manual configuration

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Additional configuration

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Mobile Device

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Mobile Operating System

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Mobile Browser

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Mobile Browser Version

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Additional information and screenshots

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[ashika01]

I have merged in #9181. Thank you @aaronlna. It is now in aws-amplify@unstable and should be released in @latest thursday during our weekly release cycle. Could you verify by upgrading to unstable and let us know if there are any issues?

[github-actions[bot]]

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