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Legal

By submitting a pull request, you represent that you have the right to license your contribution to Apple and the community, and agree by submitting the patch that your contributions are licensed under the Apache 2.0 license (see LICENSE.txt).

How to submit a bug report

Please ensure to specify the following:

  • SwiftLog commit hash
  • Contextual information (e.g. what you were trying to achieve with SwiftLog)
  • Simplest possible steps to reproduce
    • More complex the steps are, lower the priority will be.
    • A pull request with failing test case is preferred, but it's just fine to paste the test case into the issue description.
  • Anything that might be relevant in your opinion, such as:
    • Swift version or the output of swift --version
    • OS version and the output of uname -a
    • Network configuration

Example

SwiftLog commit hash: 4fe877816ad82627602377f415b6a66850214824

Context:
While testing my application that uses with SwiftLog, I noticed that ...

Steps to reproduce:
1. ...
2. ...
3. ...
4. ...

$ swift --version
Swift version 4.0.2 (swift-4.0.2-RELEASE)
Target: x86_64-unknown-linux-gnu

Operating system: Ubuntu Linux 16.04 64-bit

$ uname -a
Linux beefy.machine 4.4.0-101-generic #124-Ubuntu SMP Fri Nov 10 18:29:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

My system has IPv6 disabled.

Writing a Patch

A good SwiftLog patch is:

  1. Concise, and contains as few changes as needed to achieve the end result.
  2. Tested, ensuring that any tests provided failed before the patch and pass after it.
  3. Documented, adding API documentation as needed to cover new functions and properties.
  4. Accompanied by a great commit message, using our commit message template.

Commit Message Template

We require that your commit messages match our template. The easiest way to do that is to get git to help you by explicitly using the template. To do that, cd to the root of our repository and run:

git config commit.template dev/git.commit.template

Make sure Tests work on Linux

SwiftLog uses XCTest to run tests on both macOS and Linux. While the macOS version of XCTest is able to use the Objective-C runtime to discover tests at execution time, the Linux version is not. For this reason, whenever you add new tests you have to run a script that generates the hooks needed to run those tests on Linux, or our CI will complain that the tests are not all present on Linux. To do this, merely execute ruby ./scripts/generate_linux_tests.rb at the root of the package and check the changes it made.

How to contribute your work

Please open a pull request at https://github.com/apple/swift-log. Make sure the CI passes, and then wait for code review.