Cassandra role consistency level

[rhysmeister]

SUMMARY

Take over of #284

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

cassandra_role

[rhysmeister]

Should also be added to...

• cassandra_keyspace
• cassandra_table

and then refactored at some point, to cassandra_common.py, as described in #248

[rhysmeister]

Note the tests for ANY consistency level...

- name: Create a test role - ANY consistency
  community.cassandra.cassandra_role:
    name: any_role
    password: p4ssw0rd
    login: true
    keyspace_permissions:
      test_keyspace:
        - "ALL PERMISSIONS"
    state: present
    login_user: "{{ cassandra_admin_user }}"
    login_password: "{{ cassandra_admin_pwd }}"
    debug: yes
    consistency_level: "ANY"
  ignore_errors: true
  register: any

- assert:
    that:
      - any.failed
      - "'ANY ConsistencyLevel is only supported for writes' in any.msg"

For this feature to be fully usable we need to create separate connections for read and write.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.29%. Comparing base (a94515f) to head (82866ce).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #287      +/-   ##
==========================================
- Coverage   72.13%   71.29%   -0.85%     
==========================================
  Files          37       26      -11     
  Lines        2688     1895     -793     
  Branches      605      403     -202     
==========================================
- Hits         1939     1351     -588     
+ Misses        394      293     -101     
+ Partials      355      251     -104     

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[rhysmeister]

Here is a summary of the support consistency levels for reads and writes...

Consistency Level	Read	Write
ANY	No	Yes
ONE	Yes	Yes
TWO	Yes	Yes
THREE	Yes	Yes
QUORUM	Yes	Yes
ALL	Yes	Yes
LOCAL_ONE	Yes	Yes
LOCAL_QUORUM	Yes	Yes
EACH_QUORUM	No	Yes
SERIAL	Yes	No
LOCAL_SERIAL	Yes	No

We should update the code to reflect this. If the consistency level is not supported, we simply skip applying it.