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S3Manifest

Sample code for building a CSV manifest of huge S3 buckets for analytics.

It generates count and total size statistics per storage type and produces a gzipped, comma separated CSV file with the following structure:

"Path","Name","StorageClass","Size"
"css/","file1.css","STANDARD",144832
"js/","app.js","STANDARD",5222
"","favicon.ico","STANDARD",1150

These files are directly consumable by Amazon Athena for analytics.

Building

The system uses Apache Maven and is easily configured in IntelliJ by importing the Maven pom.xml as a new project.

Build either from within IntelliJ or use Maven from the command line:

mvn package

The system builds an executable Jar file containing all required jars:

target/S3Manifest-2.0.jar

Usage

To run the program from the command line use:

java -jar target/S3Manifest-2.0.jar

This produces help documentation:

usage: java -jar target/S3Manifest-2.0.jar
    --bucket <arg>    Required S3 bucket name to enumerate
    --output <arg>    Required output CSV file (.gz is appended)
    --prefix <arg>    Optional S3 prefix to list under
    --profile <arg>   Optional AWS profile name to use
    --region <arg>    Required AWS region for the bucket

Authors

Josh Passenger AWS Solutions Architect - jospas@amazon.com

License

This project is licensed under the Apache 2 License - see the LICENSE file for details

Warranty

No warranty is provided or implied with this software, it is provided as a Proof of Concept (POC) example and will require additional error checking code and testing.