Create EventHandler.java #1
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| final AmazonS3 s3Client = EventHandler.getS3Client(); | ||
| logger.log("Processing Bucket: " + bucketName); | ||
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| ObjectListing files = s3Client.listObjects(bucketName); |
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Recommendation generated by Amazon CodeGuru Reviewer. Leave feedback on this recommendation by replying to the comment or by reacting to the comment using emoji.
This code might not produce accurate results if the operation returns paginated results instead of all results. Consider adding another call to check for additional results.
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| public static AmazonS3 getS3Client() { | ||
| return AmazonS3ClientBuilder.standard().withRegion(Regions.DEFAULT_REGION).build(); |
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This code is written so that the client cannot be reused across invocations of the Lambda function.
To improve the performance of the Lambda function, consider using static initialization/constructor, global/static variables and singletons. It allows to keep alive and reuse HTTP connections that were established during a previous invocation.
Learn more about best practices for working with AWS Lambda functions.
| final AmazonS3 s3Client = EventHandler.getS3Client(); | ||
| logger.log("Processing Bucket: " + bucketName); | ||
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| ObjectListing files = s3Client.listObjects(bucketName); |
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Recommendation generated by Amazon CodeGuru Reviewer. Leave feedback on this recommendation by replying to the comment or by reacting to the comment using emoji.
This code uses an outdated API. ListObjectsV2 is the revised List Objects API, and we recommend you use this revised API for new application developments.
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| long expirationTime = System.currentTimeMillis() + Duration.ofMinutes(1).toMillis(); | ||
| while(System.currentTimeMillis() < expirationTime) { | ||
| if (s3Client.doesObjectExist(Constants.SUMMARY_BUCKET, summaryUpdateName)) { |
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This code appears to be waiting for a resource before it runs. You could use the waiters feature to help improve efficiency. Consider using ObjectExists or ObjectNotExists. For more information, see https://aws.amazon.com/blogs/developer/waiters-in-the-aws-sdk-for-java/
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