Ansible: How to select specific field using register - ansible

Question

I am using a package specific command for which there is no existing module. The output (stdout) of the command is either 0 or 1. I'm trying assign the value of stdout to a variable for later use in the playbook. However, I cannot seem to isolate the stdout, which is clearly being captured.
ok: [hostname1] => {
"dmstate": {
"changed": true,
"msg": "All items completed",
"results": [
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"_ansible_parsed": true,
"changed": true,
"cmd": "/usr/bin/ssh -q hostname1 \"/opt/REDACTED/bin/dmctl -s localhost:8426/dmbroker get DomainManager::hostname1-ampm1::state\"",
"delta": "0:00:01.808716",
"end": "2017-09-06 13:28:04.853221",
"invocation": {
"module_args": {
"_raw_params": "/usr/bin/ssh -q hostname1 \"/opt/REDACTED/bin/dmctl -s localhost:8426/dmbroker get DomainManager::hostname1-ampm1::state\"",
"_uses_shell": true,
"chdir": null,
"creates": null,
"executable": null,
"removes": null,
"warn": true
}
},
"item": "hostname1-ampm1",
"rc": 0,
"start": "2017-09-06 13:28:03.044505",
"stderr": "",
"stderr_lines": [],
"stdout": "0",
"stdout_lines": [
"0"
]
}
]
}
}
What I tried was using set_fact: to isolate and search the dmstate.results, but I cannot figure out the correct syntax.
tasks:
- name: check status
shell: '/usr/bin/ssh -q {{ inventory_hostname }} "/opt/REDACTED/bin/dmctl -s localhost:8426/dmbroker get DomainManager::{{ item }}::state" '
register: dmstate
with_items: "{{ myprocess }}"
- name: find stdout value
set_fact: stdout_value="{{ item.stdout }}"
when: item.dmstate.results.stdout == "stdout"
with_items: dmstate.results
- name: show value of stdout
debug: var=stdout_value
The results of this are here:
fatal: [hostname1]: FAILED! => {"failed": true, "msg": "The conditional check 'item.dmstate.results.stdout == \"stdout\"' failed. The error was: error while evaluating conditional (item.dmstate.results.stdout == \"stdout\"): 'AnsibleUnsafeText' object has no attribute 'dmstate'\n\n

Answer 1

Once you are using with_items, item contains the inner value, so item.dmstate.results.stdout has no sense, you have to use item.stdout (like you do in the set_fact).
Even with this fix, your item will be skipped every time because you are testing the stdout value against the "stdout" string, but you say that stdout is only "0" or "1".
I think you could simply remove the when clause.
Another problem: each item will overwrite the value of stdout_value, so at the end you will only get the last value.