Fix backfill result conditional

[DrPsychick]

When backfill is complete and all elements are ok (so it seems), the condition fails.

Assumption:

• a check if attribute='skipped' exists should help
• check for other occurences and fix them as well

TASK [ansible_influx_downsampling : compact telegraf/influxdb_database - Backfilling measurement] **********************
ok: [localhost] => (item=7)
ok: [localhost] => (item=6)
ok: [localhost] => (item=5)
ok: [localhost] => (item=4)
ok: [localhost] => (item=3)
ok: [localhost] => (item=2)
ok: [localhost] => (item=1)

TASK [ansible_influx_downsampling : compact telegraf/influxdb_database - Print result from backfill] *******************
fatal: [localhost]: FAILED! => {"msg": "The conditional check '(ansible_influx_mm_backfill is succeeded and ansible_influx_mm_backfill is not changed and ansible_influx_mm_backfill is not skipped and (ansible_influx_mm_backfill.results|map(attribute='skipped')|flatten|default([])|unique != [ true ]) and (ansible_influx_mm_backfill.results|map(attribute='succeeded')|flatten|default([])|unique != [ true ]) ) or ansible_influx_mm_backfill is failed' failed. The error was: error while evaluating conditional ((ansible_influx_mm_backfill is succeeded and ansible_influx_mm_backfill is not changed and ansible_influx_mm_backfill is not skipped and (ansible_influx_mm_backfill.results|map(attribute='skipped')|flatten|default([])|unique != [ true ]) and (ansible_influx_mm_backfill.results|map(attribute='succeeded')|flatten|default([])|unique != [ true ]) ) or ansible_influx_mm_backfill is failed): 'dict object' has no attribute 'skipped'\n\nThe error appears to be in '/Users/muc/work/git/ansible-roles/ansible_influx_downsampling/tasks/influxdb_measurement.yml': line 129, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: '{{ mm_prefix }} Print result from backfill'\n  ^ here\nWe could be wrong, but this one looks like it might be an issue with\nmissing quotes. Always quote template expression brackets when they\nstart a value. For instance:\n\n    with_items:\n      - {{ foo }}\n\nShould be written as:\n\n    with_items:\n      - \"{{ foo }}\"\n"}

[DrPsychick]

try this as solution: ansible/ansible#24338 (comment)

[DrPsychick]

Solution:

# |selectattr('attribute', 'default')|map(attribute='attribute')
ansible localhost -m command -a "echo {{ [ { 'values': 'foo' }, { 'name': 'bar' } ] |selectattr('foo', 'defined')|map(attribute='foo')|flatten()|default([])|list  }}"

or

# |map(attribute='attribute')|reject('undefined')
ansible localhost -m command -a "echo {{ [ { 'values': 'foo' }, { 'name': 'bar' } ] |map(attribute='foo')|reject('undefined')|flatten()|default([])|list  }}"