7

我希望我的 Heroku 应用程序（Play/Scala，在 Heroku Cedar 上运行）的运行时能够向我报告它是从哪个 git commit 构建的。Heroku 应用程序通常由 slug 编译器在 Heroku 的基础架构上构建 - 不幸的是，slug 编译器将其作为此构建过程的早期部分：

删除未使用的文件，包括 .git 目录、.gitmodules 文件、日志和 tmp 中的任何内容，以及顶级 .slugignore 文件中指定的任何内容。

...所以 Git 信息不再可用于sbt-buildinfo我用来记录 Git 提交的插件。

如何在 slug 中记录 HEAD 提交？此信息是否有可用的环境变量？

4

2 回答 2

7

三种不同的选择，最好先...

SOURCE_VERSION环境变量（构建时）

从 2015 年 4 月 1 日起，有一个SOURCE_VERSION环境变量可用于在 Heroku 上运行的构建。对于 git-push 构建，这是正在构建的源的 git commit SHA-1：

https://devcenter.heroku.com/changelog-items/630

（感谢@srtech指出这一点！）

/etc/heroku/dyno元数据文件（运行时）

Heroku have beta functionality to write out a /etc/heroku/dyno metadata file onto your running dyno. If you email support you can probably get added to the beta. Here's a place where Heroku themselves are using it:

https://github.com/heroku/fix/blob/6c8ab7a/lib/heroku_dyno_metadata.rb

The contents look like this:

{
   "dyno":{
      "physical_id":"161bfad9-9e83-40b7-b385-78305db2f168",
      "size":1,
      "name":"run.7145"
   },
   "app":{
      "id":null
   },
   "release":{
      "id":50,
      "commit":"2c3a0b24069af49b3de35b8e8c26765c1dba9ff0",
      "description":null
   }
}

..so release.commit is the field you're after.

SBT-specific: use sbt-heroku to build slug locally

My initial solution was to use the sbt-heroku plugin published by Heroku themselves. This means no longer doing deploys by git push (having the slug compiled on Heroku's own infrastructure), but instead compiling the slug locally and uploading that directly to Heroku. Because the slug is compiled locally, in my work repo, the Git information is all there and the build process can easily identify the commit id and embed it into the app's code.

The slug is substantially larger in size that a Git diff (90MB vs 0.5KB), but apart from that the solution works reasonably well. I'm actually using Travis to do continuous deployment, and so Travis was doing the sbt stage deployHeroku for me (the Git commit id is available in that environment while building), meaning I could git-push from my laptop on the move, and Travis will do the large slug upload to Heroku.

于 2014-11-08T15:43:43.237 回答
0

在您的代码上运行检查过滤器（也称为“涂抹”），并将 HEAD SHA 嵌入到您的应用程序的配置文件中。

于 2014-11-06T17:01:15.723 回答