Michael Lihs Michael Lihs - 14 days ago 10
Git Question

Resolve recursive git cookbook dependencies with Berkshelf

tl;dr version: Is Berkshelf able to resolve recursive dependencies within Git-based cookbooks and if yes - how?

I try to manage my Chef cookbook dependencies with Berkshelf. The cookbooks are all stored in internal Git repositories. The dependencies are as follows:

env_dockerhub_dev
>>depends on>> app_dockerhub
>>depends on>> app_docker


The main Berksfile in my project looks like this:

source "https://supermarket.chef.io"

cookbook "env_dockerhub_dev", git: "git@URL_TO_GIT_SERVER/chef_env_dockerhub_dev.git"


The
env_dockerhub_dev
cookbook has a
metadata.rb
like this:

name 'env_dockerhub_dev'
...
depends 'app_dockerhub'
depends 'base_ubuntu'


and a
Berksfile
like this:

source "https://supermarket.chef.io"

cookbook "app_dockerhub", git: "git@URL_TO_GIT_SERVER/chef_app_dockerhub.git"
cookbook "base_ubuntu", git: "git@URL_TO_GIT_SERVER/chef_base_ubuntu.git"


When I now run
berks install
I get the following error message:

Resolving cookbook dependencies...

Fetching 'env_dockerhub_dev' from git@URL_TO_GIT_SERVER/chef_env_dockerhub_dev.git (at master)
Fetching cookbook index from https://supermarket.chef.io...
Unable to satisfy constraints on package app_dockerhub, which does not exist, due to solution constraint (env_dockerhub_dev = 0.1.0). Solution constraints that may result in a constraint on app_dockerhub: [(env_dockerhub_dev = 0.1.0) -> (app_dockerhub >= 0.0.0)]
Missing artifacts: app_dockerhub,base_ubuntu
Demand that cannot be met: (env_dockerhub_dev = 0.1.0)
Unable to find a solution for demands: env_dockerhub_dev (0.1.0)


I can fix the problem, when I add all the Git URLs for all my internal cookbooks into the "main" Berksfile (the Berksfile in the root of my project) like this:

source "https://supermarket.chef.io"

# the main cookbook
cookbook "env_dockerhub_dev", git: "git@URL_TO_GIT_SERVER/chef_env_dockerhub_dev.git"

# the cookbooks that are "recursively"
cookbook "app_dockerhub", git: "git@gURL_TO_GIT_SERVER/chef_app_dockerhub.git"
cookbook "app_docker", git: "git@URL_TO_GIT_SERVER/chef_app_docker.git"


Anyhow - I think this should not be the solution for this problem.

Thx a lot for your help!

Answer

Ok - reading this https://github.com/berkshelf/berkshelf/pull/304 I think I found out that this is really not possible. Still don't get why - but that's another issue :-)

As mentioned in my question, a solution is to add all cookbook dependencies and their git URL in the toplevel Berksfile:

source "https://supermarket.chef.io"

# the main cookbook
cookbook "env_dockerhub_dev", git: "git@URL_TO_GIT_SERVER/chef_env_dockerhub_dev.git"

# other cookbook dependencies (resolved recursively)
cookbook "app_dockerhub", git: "git@gURL_TO_GIT_SERVER/chef_app_dockerhub.git"
cookbook "app_docker", git: "git@URL_TO_GIT_SERVER/chef_app_docker.git"
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