Ansible: creating variables from JSON response - json

Question

I am struggling on understanding how to get the response from one uri call to pass to another. I am creating a playbook for my storage system. It requires a SessionKey for all REST calls passed in a custom header "X-HP3PAR-WSAPI-SessionKey"
The initial authentication REST call works succeeds and I see the SessionKey. I am unable to get the SessionKey to be passed to the subsequent call.
Any suggestions?
---
- name: Connect to 3par
hosts: localhost
become: no
vars:
auth_3par_user: "3paruser"
auth_3par_password: "3parpass"
ip_address_3par: 1.1.1.1
rest_api_url_3par: "https://{{ ip_address_3par }}:8080/api/v1"
tasks:
- name: check if 3par WSAPI is running
uri:
url: "{{ rest_api_url_3par }}/credentials"
force_basic_auth: yes
method: POST
HEADER_Content-Type: application/json
body_format: json
body: "{ 'user': '{{ auth_3par_user }}', 'password': '{{ auth_3par_password }}' }"
status_code: 201
return_content: yes
validate_certs: no
register: output
- name: Parsing key
debug:
msg: "{{ output.json.key }}"
- name: GET 3par volumes
uri:
url: "{{ rest_api_url_3par }}/volumes"
method: GET
HEADER_Content-Type: "application/json"
headers:
"X-HP3PAR-WSAPI-SessionKey": "{{ output.json.key }}"
status_code: 200
return_content: yes
validate_certs: no
register: volume_output
- name: Parsing Volumes GET
debug:
var={{ volume_output.stdout | from_json }}
TASK [Parsing key] *************************************************************
task path: /home/chris/ansible/ansible_3par/playbooks/connect_3par.yml:26
ok: [localhost] => {
"msg": "0-f150f34f975693b3c95efa84b13bd605-00cc315a"
}
TASK [check if 3par WSAPI is running] ******************************************
task path: /home/chris/ansible/ansible_3par/playbooks/connect_3par.yml:30
ESTABLISH LOCAL CONNECTION FOR USER: chris
127.0.0.1 EXEC ( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1513213268.76-220322452758647 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1513213268.76-220322452758647 )" )
127.0.0.1 PUT /tmp/tmpgOtWjh TO /home/chris/.ansible/tmp/ansible-tmp-1513213268.76-220322452758647/uri
127.0.0.1 EXEC LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 /usr/bin/python /home/chris/.ansible/tmp/ansible-tmp-1513213268.76-220322452758647/uri; rm -rf "/home/chris/.ansible/tmp/ansible-tmp-1513213268.76-220322452758647/" > /dev/null 2>&1
fatal: [localhost]: FAILED! => {"changed": false, "connection": "close", "content": "{\"code\":6,\"desc\":\"invalid session key\"}",
Ansible version 2.0.0.2

Answer 1

You are mixing old and new syntax for headers in uri module.
And as you use an antiquated Ansible 2.0 version, headers parameter is completely ignored.
Upgrade to the current Ansible version.
For reference:
if you use Ansible < 2.1 define all headers using HEADER_*,
if you use Ansible >= 2.1 define all headers under headers.

Answer 2

Posting the corrected, functional code for reference after fixing headers and updating Ansible to latest version.
---
- name: Connect to 3par
hosts: localhost
become: no
vars:
auth_3par_user: "3paruser"
auth_3par_password: "3parpass"
ip_address_3par: 1.1.1.1
rest_api_url_3par: "https://{{ ip_address_3par }}:8080/api/v1"
tasks:
- name: check if 3par WSAPI is running
uri:
url: "{{ rest_api_url_3par }}/credentials"
method: POST
headers:
Content-Type: "application/json"
body_format: json
body: "{ 'user': '{{ auth_3par_user }}', 'password': '{{ auth_3par_password }}' }"
status_code: 201
return_content: yes
validate_certs: no
register: output
- name: Parsing key
debug:
msg: "{{ output.json.key }}"
- name: GET 3par volumes
uri:
url: "{{ rest_api_url_3par }}/volumes"
method: GET
headers:
Content-Type: "application/json"
X-HP3PAR-WSAPI-SessionKey: "{{ output.json.key }}"
Accept: "application/json"
status_code: 200
return_content: yes
validate_certs: no
register: volume_output
- name: Parsing Volumes GET
debug:
msg: "{{ volume_output }}"enter code here