Add the ability to exclude files when using the git file generator

[adamjohnson01]

When using the git directory generator it is possible to exclude specific paths like this

  - git:
      repoURL: https://github.com/argoproj-labs/applicationset.git
      revision: HEAD
      directories:
      - path: examples/git-generator-directory/excludes/cluster-addons/*
      - path: examples/git-generator-directory/excludes/cluster-addons/exclude-helm-guestbook
        exclude: true

When using the git file generator I would like to be able to add files using a wildcard and then exclude specific files like this

spec:
  generators:
  - git:
      repoURL: https://github.com/argoproj-labs/applicationset.git
      revision: HEAD
      files:
      - path: "examples/git-generator-files-discovery/cluster-config/**/config.json"
      - path  "examples/git-generator-files-discovery/cluster-config/staging/config.json"
        exclude: true

Of course if there is another way to do this that I am not aware of then I would be happy to use that. If not I am also happy to implement this change if it is agreed.

[crenshaw-dev]

@adamjohnson01 I'm not aware of a workaround. Would you be willing to contribute the feature?

[adamjohnson01]

@crenshaw-dev yes I am happy to contribute.

[templarfelix]

i need same feature, @adamjohnson01 you make this chances? if not call for me i write this.

[adamjohnson01]

@templarfelix, I have this working. Will create a PR soon.

[ErikLundJensen]

Will this feature also support exclude directories like /foo/** or /foo in the git files generator?

[adamjohnson01]

Will this feature also support exclude directories like /foo/** or /foo in the git files generator?

Neither /foo/* or /foo would not work as the file list does not contain a full path. It is the output of git ls-files

foo/** would work but foo would not as the entire path needs to match. There needs to be either a ** or any pattern that is accepted by path.Match

pattern:
   { term }
term:
   '*'         matches any sequence of non-/ characters
   '?'         matches any single non-/ character
   '[' [ '^' ] { character-range } ']'
               character class (must be non-empty)
   c           matches character c (c != '*', '?', '\\', '[')
   '\\' c      matches character c

character-range:
   c           matches character c (c != '\\', '-', ']')
   '\\' c      matches character c
   lo '-' hi   matches character c for lo <= c <= hi

[DjoleLepi]

Any updates on this?
For me this would simplify the definition of ApplicationSets a lot

[crenshaw-dev]

@DjoleLepi I'm not sure if this PR was ever moved over to argoproj/argo-cd after applicationset was integrated with that repo.

[abelnieva]

HI that would great to have this feature