junos_config fails to apply changes to devices with large configurations when source format is "set"

[roadracer96]

SUMMARY

In this case, the device under test has a configuration of 145758 lines (set), 158600 (stanza), or 588119 lines (XML). When applying a change using the junos_config module with "lines: list", the following error is presented:

xmlSAX2Characters: huge text node, line 145760, column 1 (, line 145760)

The error is only related to the size of the configuration. There is no problem with the configuration being applied.

ISSUE TYPE

• Bug Report

COMPONENT NAME

junos_config

ANSIBLE VERSION

denike@sfdc-ansible01:/opt/ansible/ticketplays$ ansible --version
ansible [core 2.13.8]
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/MERIT/denike/.ansible/plugins/modules', '/opt/ansible/plugins/modules']
  ansible python module location = /home/MERIT/denike/.local/lib/python3.8/site-packages/ansible
  ansible collection location = /home/MERIT/denike/.ansible/collections:/opt/ansible/collections
  executable location = /home/MERIT/denike/.local/bin/ansible
  python version = 3.8.10 (default, Nov 22 2023, 10:22:35) [GCC 9.4.0]
  jinja version = 3.1.2
  libyaml = True

COLLECTION VERSION

# /opt/ansible/collections/ansible_collections
Collection            Version
--------------------- -------
junipernetworks.junos 5.0.0  

CONFIGURATION

COLLECTIONS_PATHS(/etc/ansible/ansible.cfg) = ['/home/MERIT/denike/.ansible/collections', '/opt/ansible/collections']
DEFAULT_FORKS(/etc/ansible/ansible.cfg) = 10
DEFAULT_GATHERING(/etc/ansible/ansible.cfg) = explicit
DEFAULT_HOST_LIST(/etc/ansible/ansible.cfg) = ['/opt/ansible/netdevices']
DEFAULT_MODULE_NAME(/etc/ansible/ansible.cfg) = raw
DEFAULT_MODULE_PATH(/etc/ansible/ansible.cfg) = ['/home/MERIT/denike/.ansible/plugins/modules', '/opt/ansible/plugins/modules']
DEFAULT_STDOUT_CALLBACK(/etc/ansible/ansible.cfg) = debug
DEPRECATION_WARNINGS(/etc/ansible/ansible.cfg) = False
HOST_KEY_CHECKING(/etc/ansible/ansible.cfg) = False
INTERPRETER_PYTHON(/etc/ansible/ansible.cfg) = auto_legacy_silent
INVENTORY_ENABLED(/etc/ansible/ansible.cfg) = ['host_list', 'script', 'auto', 'yaml', 'ini', 'toml', 'netbox.netbox.nb_inventory']
PERSISTENT_COMMAND_TIMEOUT(/etc/ansible/ansible.cfg) = 300
RETRY_FILES_ENABLED(/etc/ansible/ansible.cfg) = False

OS / ENVIRONMENT

Ubuntu 22.04

STEPS TO REPRODUCE

Configure a device with a dummy configuration exceeding 146000 lines (exact size to create error is unknown). Run the following playbook

---
- name: Test Config change
  hosts: device
  gather_facts: no
  tasks:
  - name: Test Config change
    junos_config:
      comment: Test Config change
      lines:
        - set policy-options policy-statement TEST term TEST then accept

EXPECTED RESULTS

Change to be applied to device

ACTUAL RESULTS

<1.2.3.4> ANSIBLE_NETWORK_IMPORT_MODULES: found junos_config at /home/MERIT/denike/.ansible/collections/ansible_collections/junipernetworks/junos/plugins/modules/junos_config.py
<1.2.3.4> ANSIBLE_NETWORK_IMPORT_MODULES: running junos_config
<1.2.3.4> ANSIBLE_NETWORK_IMPORT_MODULES: complete
<1.2.3.4> ANSIBLE_NETWORK_IMPORT_MODULES: Result: {'failed': True, '_ansible_parsed': False, 'module_stdout': '', 'module_stderr': 'xmlSAX2Characters: huge text node, line 145760, column 1 (, line 145760)', 'msg': 'MODULE FAILURE\nSee stdout/stderr for the exact error'}
fatal: [chcg-eqx-ch1-c1]: FAILED! => {
"changed": false
}

MSG:

MODULE FAILURE
See stdout/stderr for the exact error

MODULE_STDERR:

xmlSAX2Characters: huge text node, line 145760, column 1 (, line 145760)

[roadracer96]

Possibly related to this?

ncclient/ncclient#185