Amazon CodeGuru is a developer software that helps you enhance your code high quality and has two most important elements:

  • CodeGuru Reviewer makes use of program evaluation and machine studying to detect potential defects which are tough to search out in your code and presents ideas for enchancment.
  • CodeGuru Profiler collects runtime efficiency knowledge out of your stay functions, and supplies visualizations and proposals that can assist you fine-tune your software efficiency.

At this time, I’m glad to announce three new options:

  • Python Help for CodeGuru Reviewer and Profiler (Preview) – Now you can use CodeGuru to enhance functions written in Python. Earlier than this launch, CodeGuru Reviewer may analyze Java code, and CodeGuru Profiler supported functions working on a Java digital machine (JVM).
  • Safety Detectors for CodeGuru Reviewer – A brand new set of detectors for CodeGuru Reviewer to determine safety vulnerabilities and test for safety greatest practices in your Java code.
  • Reminiscence Profiling for CodeGuru Profiler – A brand new visualization of reminiscence retention per object kind over time. This makes it simpler to search out reminiscence leaks and optimize how your software is utilizing reminiscence.

Let’s see these functionalities in additional element.

Python Help for CodeGuru Reviewer and Profiler (Preview)
Python Help for CodeGuru Reviewer is accessible in Preview and presents suggestions on tips on how to enhance the Python code of your functions in a number of classes equivalent to concurrency, knowledge constructions and management move, scientific/math operations, error dealing with, utilizing the usual library, and naturally AWS greatest practices.

Now you can additionally use CodeGuru Profiler to gather runtime efficiency knowledge out of your Python functions and get visualizations that can assist you determine how code is working on the CPU and the place time is consumed. On this method, you’ll be able to detect the costliest strains of code of your software. Focusing your tuning actions on these elements helps you cut back infrastructure price and enhance software efficiency.

Let’s see the CodeGuru Reviewer in motion with some Python code. Once I joined AWS eight years in the past, one of many first initiatives I created was a Filesystem in Userspace (FUSE) interface to Amazon Simple Storage Service (S3) referred to as yas3fs (Yet Another S3-backed File System). It was impressed by the extra standard s3fs-fuse challenge however rewritten from scratch to implement a distributed cache synchronized by Amazon Simple Notification Service (SNS) notifications (now, due to the various contributors, it’s utilizing S3 event notifications). It was additionally a great excuse for me to study extra about Python programming and S3. It’s a private challenge that on the time was made accessible as open supply. At this time, should you want a shared file system, you should utilize Amazon Elastic File System (EFS).

Within the CodeGuru console, I affiliate the yas3fs repository. You may affiliate repositories from GitHub, together with GitHub Enterprise Cloud and GitHub Enterprise Server, Bitbucket, or AWS CodeCommit.

After that, I can get a code overview from CodeGuru in two methods:

  • Robotically, once I create a pull request. This can be a smart way to make use of it as you and your workforce are engaged on a code base.
  • Manually, making a repository evaluation to get a code overview for all of the code in a single department. That is helpful to begin utilizing GodeGuru with an present code base.

Since I simply related the entire repository, I’m going for a full evaluation and write down the department identify to overview (apologies, I used to be nonetheless utilizing grasp on the time, now I take advantage of most important for brand spanking new initiatives).

After a couple of minutes, the code overview is accomplished, and there are 14 suggestions. Not dangerous, however I can undoubtedly enhance the code. Right here’s just a few of the suggestions I get. I used to be utilizing exceptions and world variables an excessive amount of on the time.

Safety Detectors for CodeGuru Reviewer
The brand new CodeGuru Reviewer Safety Detector makes use of automated reasoning to research all code paths and discover potential safety points deep in your Java code, even ones that span a number of strategies and recordsdata and which will contain a number of sequences of operations. To construct this detector, we used studying and greatest practices from Amazon’s 20+ years of expertise.

The Safety Detector can also be figuring out safety vulnerabilities within the top 10 Open Web Application Security Project (OWASP) categories, equivalent to weak hash encryption.

If the safety detector discovers a difficulty, it presents a instructed remediation together with an evidence. On this method, it’s a lot simpler to observe safety greatest practices for AWS APIs, equivalent to these for AWS Key Management Service (KMS) and Amazon Elastic Compute Cloud (EC2), and for widespread Java cryptography and TLS/SSL libraries.

With assist from the safety detector, safety engineers can give attention to architectural and application-specific safety best-practices, and code reviewers can focus their consideration on different enhancements.

Reminiscence Profiling for CodeGuru Profiler
For functions working on a JVM, CodeGuru Profiler can now present the Heap Abstract, a consolidated view of reminiscence retention throughout a timeframe, monitoring each general sizes and variety of objects per object kind (equivalent to String, int, char[], and customized varieties). These metrics are introduced in a timeline graph, in an effort to simply spot traits and peaks of reminiscence utilization per object kind.

Listed here are a few situations the place this will help:

Reminiscence Leaks – A continually rising reminiscence utilization curve for a number of object varieties could point out a leak (meant right here as pointless retention of reminiscence objects by the applying), presumably resulting in out-of-memory errors and software crashes.

Reminiscence Optimizations – Having a breakdown of reminiscence utilization per object kind is a step past conventional reminiscence utilization monitoring, primarily based solely on JVM-level metrics like whole heap utilization. By realizing that an unexpectedly excessive quantity of reminiscence has been related to a particular object kind, you’ll be able to focus your evaluation and optimization efforts on the elements of your software which are liable for allocating and referencing objects of that kind.

For instance, here’s a graph displaying how reminiscence is utilized by a Java software over an interval of time. Aside from the full capability accessible and the used house, I can see how reminiscence is being utilized by some particular object varieties, equivalent to byte[], java.lang.UUID, and the entries of a java.util.LinkedHashMap. The continual development over time of the reminiscence retained by these object varieties is suspicious. There may be in all probability a reminiscence leak I’ve to analyze.

Within the desk slightly below, I’ve an extended checklist of object varieties allocating reminiscence on the heap. The primary three are chosen and for that cause are proven within the graph above. Right here, I can examine different object varieties and choose them to see their reminiscence utilization over time. It appears just like the three I already chosen are those with extra danger of being affected by a reminiscence leak.

Accessible Now
These new options can be found immediately in all areas the place Amazon CodeGuru is obtainable. For extra data, please see the AWS Regional Services table.

There aren’t any pricing adjustments for Python assist, safety detectors, and reminiscence profiling. You pay for what you utilize with out upfront charges or commitments.

Be taught extra about Amazon CodeGuru and begin utilizing these new options immediately to enhance the code high quality of your functions.  


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