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Kenneth Reitz
2018-05-02 11:25:02 -04:00
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@@ -23,7 +23,7 @@ This system is written in the Go programming language.
Herald assumes that you have a buildpack in a git repo that contains a `versions` branch, and in that versions branch there is a `versions` folder. In that folder it will look for executables. For example in the Ruby buildpack https://github.com/heroku/heroku-buildpack-ruby/tree/versions/versions.
When the executable is run, it should print out an available version number. One per line. For example in the Ruby buildpack:
When the executable is run, it should print out all available version numbers — one per line. For example in the Ruby buildpack:
```term
$ versions/ruby
@@ -35,8 +35,6 @@ $ versions/ruby
#...
```
The list of buildpacks is in a go "map" like a dict in Python or a hash in Ruby in `herald.go`.
Once every 15 minutes the `herald/cmd/version-scraper/main.go` script will execute against all buildpacks and record the result in Redis. When it is detected that there is a new entry, then a new issue will be opened up on that buildpack.
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