Getting string from an XML URL response

[Marc L]

Hi,

I have a URL that I call with a  GET, and that returns an XML response.

I'd like to parse that response (I could use grep), but I'm struggling to get the response content.

- name: Get OHP Group Passcode

      uri:

        url: "{{ node_protocol }}://{{ inventory_hostname }}:/admin/configuration/environment/current"

        headers:

           "accept": "application/Configuration.6_10+xml"

           "X-Requested-With": "ansible"

        method: GET

        user: "{{ auth_user }}"

        password: "{{ local_password }}"

        force_basic_auth: yes

        validate_certs: no

        return_content: yes

      register: webpage

      until: webpage.content.find("passcode") != -1

      retries: 60

      delay: 10

      delegate_to: localhost

      when: inventory_hostname == groups["backend_nodes"][0]

    - name: Output current env details
      debug:
        msg: "{{ webpage.content }}"
       
       
    - name: Get the group passcode
      command: "echo {{ webpage.content }} | grep -oP '(?<=<passcode>).*?(?=</passcode>)'"
      delegate_to: localhost
      register: passcode

I assumed I could just debug out the webpage.content again, but I get an error

TASK [ansible-ohp-win-installer : Output current env details] **********************************************************

fatal: [192.168.50.4]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'content'\n\nThe error appears to have been in '/mnt/c/Work/ansible/roles/ansible-ohp-win-installer/tasks/main.yml': line 185, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n    - name: Output current env details\n      ^ here\n\nexception type: <class 'ansible.errors.AnsibleUndefinedVariable'>\nexception: 'dict object' has no attribute 'content'"}

[Kai Stian Olstad]

On 27.10.2017 18:55, Marc L wrote:
> I have a URL that I call with a GET, and that returns an XML response.
>
> I'd like to parse that response (I could use grep), but I'm struggling
> to
> get the response content.

In 2.4 you have the xml module you could use.

> - name: Get OHP Group Passcode
> uri:
> url: "{{ node_protocol }}://{{ inventory_hostname
> }}:/admin/configuration/environment/current"
> headers:
> "accept": "application/Configuration.6_10+xml"
> "X-Requested-With": "ansible"
> method: GET
> user: "{{ auth_user }}"
> password: "{{ local_password }}"
> force_basic_auth: yes
> validate_certs: no
> return_content: yes
> register: webpage
> until: webpage.content.find("passcode") != -1
> retries: 60
> delay: 10
> delegate_to: localhost
> when: inventory_hostname == groups["backend_nodes"][0]
>
> - name: Output current env details
> debug:
> msg: "{{ webpage.content }}"

<snip />

> I assumed I could just debug out the webpage.content again, but I get
> an
> error
>
> TASK [ansible-ohp-win-installer : Output current env details]
> **********************************************************
> fatal: [192.168.50.4]: FAILED! => {"msg": "The task includes an option
> with
> an undefined variable. The error was: 'dict object' has no attribute
> 'content'\n\nThe error appears to have been in
> '/mnt/c/Work/ansible/roles/ansible-ohp-win-installer/tasks/main.yml':
> line
> 185, column 7, but may\nbe elsewhere in the file depending on the exact
> syntax problem.\n\nThe offending line appears to be:\n\n\n - name:
> Output current env details\n ^ here\n\nexception type: <class
> 'ansible.errors.AnsibleUndefinedVariable'>\nexception: 'dict object'
> has no
> attribute 'content'"}

Your host 192.168.50.4 is not groups["backend_nodes"][0]

"Get OHP Group Passcode" run only on one host
'groups["backend_nodes"][0]' because of the when statement.
But your debug task run on all the host in the playbook, but they don't
have the variable webpage, so you get the error message on them, so you
need to include the when on the debug task also.

--
Kai Stian Olstad

[Marc Lang]

Thanks Kai, that worked. Seems obvious now I look at it, but wasnt at the time!

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