Hi,
I have a playbook with many roles plus a common role that is used by each
other roles.
Basically, this common role is used because I have some tasks that are
applicable for all roles, obviously, I don't want to rewrite these tasks as
many time as I have a role.
Recently I encountered a case where I need a task to be played for all
roles except only one. Therefore, I'm looking for a way to detect which
role issued the call to the common role due to dependency so I could filter
when to skip the task or not with a simple `when` statement.
├── roles
│ ├── common
│ │ ├── defaults
│ │ │ └── main.yml
│ │ └── tasks
│ │ ├── main.yml
│ │ └── test.yml
│ ├── first_role
│ │ ├── meta
│ │ │ └── main.yml
│ │ └── tasks
│ │ └── main.yml
│ └── second_role
│ ├── meta
│ │ └── main.yml
│ └── tasks
│ └── main.yml
└── site.yml
The only way I see at the moment to achieve that would be something like
following:
# ./hosts[group1]
laptop ansible_host=127.0.0.1
# ./site.yml
---
- hosts: group1
roles:
- first_role
# ./roles/first_role/meta/main.yml
---
dependencies:
- { role: common, parent_role: "first_role" }
# ./roles/common/defaults/main.yml
---
parent_role:
# ./roles/common/tasks/main.yml
---
- name: common task
debug:
msg: "I'm a common task"
- name: common task but not for all roles
debug:
msg: "I'm not a common task for all roles"
when: parent_role != 'first_role'
1/ The fact that I need to hardcode the rolename is not something really
clean I think.
2/ I'm obliged to declare a default variable for `parent_role` to avoid an
error message :
"The error was: 'parent_role' is undefined"
Indeed, when my common role is played and was not called by my role that
doesn't need to exclude the task from being played, I'll get this error
since I do not pass the `parent_role` variable from the other roles.
Maybe someone know a nicer way to do this ?
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