How can I iterate over a dictionary in a task?

[ZillaYT]

Say I have the following dictionary?

war_files:
  server1:
  - file1.war
  - file2.war
  server2:
  - file1.war
  - file2.war
  - file3.war

Now I want to iterate over this, say a get_url task:

- name: Get the files depending on server name
  get_url: src=http://some_host/{{ what to put here so I get each file for the server }}
  when: "{{item.key}} in ansible_hostname"
  with_dict: "{{ war_files }}"

IOW, if role is running in server1, it'll download file1.war and file2.war; if running on server2, it downloads file1.war, fiel2.war, and file3.war. I know there's probably other ways to do this, but I want to be able to do iterate through all the dictionary values in a single task.

[Kai Stian Olstad]

get_url: src=http://some_host/{{ item }}
with_items: "{{ war_files[ansible_hostname] }}"


--
Kai Stian Olstad

[ZillaYT]

Let me as a different question. What If I want to show ALL the files in a debug task, like this

- debug: msg="Key = {{ item.key }} values = {{ item.value }}"
  with_dict: "{{ war_files }}"

I want to see an output like this

"msg" : "Key = server1 value = file1.war"
"msg" : "Key = server1 value = file2.war"
"msg" : "Key = server2 value = file1.war"
"msg" : "Key = server2 value = file2.war"
"msg" : "Key = server2 value = file3.war"

IOW, I want to iterate over the keys, then the values in each key.

[Kai Stian Olstad]

On 10. feb. 2017 23:24, ZillaYT wrote:
> Let me as a different question. What If I want to show ALL the files in a
> debug task, like this
>
> - debug: msg="Key = {{ item.key }} values = {{ item.value }}"
> with_dict: "{{ war_files }}"
>
> I want to see an output like this
>
> "msg" : "Key = server1 value = file1.war"
> "msg" : "Key = server1 value = file2.war"
> "msg" : "Key = server2 value = file1.war"
> "msg" : "Key = server2 value = file2.war"
> "msg" : "Key = server2 value = file3.war"
>
> IOW, I want to iterate over the keys, then the values in each key.

Your item.value is a list so to list them as you want you will need a
loop in a loop.
Check out loop_control
https://docs.ansible.com/ansible/playbooks_loops.html#loop-control

Or you can change you variable structure so you can do this in one loop.

--
Kai Stian Olstad

[ZillaYT]

The loop_control documentation doesn't make really explain how I can use it in my case.

[ZillaYT]

I posted the same question on Stackoverflow, and got the answer I was looking for. Ugly, but it works.

http://stackoverflow.com/questions/42167747/how-to-loop-over-this-dictionary-in-ansible

[Kai Stian Olstad]

On 14. feb. 2017 17:54, ZillaYT wrote:
> I posted the same question on Stackoverflow, and got the answer I was
> looking for. Ugly, but it works.
> http://stackoverflow.com/questions/42167747/how-to-loop-over-this-dictionary-in-ansible

Or just use loop in a loop with loop control.

Task:
- include: loop.yml
with_dict: "{{ war_files }}"
loop_control:
loop_var: outer_item


And the loop.yml contain the following.

---
- debug: msg="My key in {{ outer_item.key }} and the value is {{ item }}"
with_items: "{{ outer_item.value }}"


--
Kai Stian Olstad

[ZillaYT]

Thanks, I'll try this too.

[Felix Fontein]

Hi,

I created a plugin for more complicated looping, which also covers your
problem. You can find the plugin here:
https://github.com/felixfontein/ansible-dependentloop
With it, your problem could be solved as follows:

- name: Get the files depending on server name

get_url: src=http://some_host/{{ item.1 }}
when: "{{ item.0 }} in ansible_hostname"
with_dependent:
- "war_files.keys()"
- "war_files[item.0]"

Cheers,
Felix