Control: SQL databases should have appropriate tag values

powerpipe control run azure_tags.control.sql_database_expected_tag_values

powerpipe login
powerpipe control run azure_tags.control.sql_database_expected_tag_values --share

with raw_data as
(
  select
    id,
    title,
    tags,
    row_to_json(json_each($1)) as expected_tag_values,
    resource_group, subscription_id
  from
    azure_sql_database
  where
    tags::text <> '{}'
    or tags is not null
),
exploded_expected_tag_values as
(
  select
    id,
    title,
    expected_tag_values ->> 'key' as tag_key,
    jsonb_array_elements_text((expected_tag_values ->> 'value')::jsonb) as expected_values,
    tags ->> (expected_tag_values ->> 'key') as current_value,
    resource_group, subscription_id
  from
    raw_data
),
analysis as
(
  select
    id,
    title,
    current_value like expected_values as has_appropriate_value,
    case
      when current_value is null then true
      else false
    end as has_no_matching_tags,
    tag_key,
    current_value,
    resource_group, subscription_id
  from
    exploded_expected_tag_values
),
status_by_tag as
(
  select
    id,
    title,
    bool_or(has_appropriate_value) as status,
    tag_key,
    case
      when bool_or(has_appropriate_value) then ''
      else tag_key
    end as reason,
    bool_or(has_no_matching_tags) as can_skip,
    current_value,
    resource_group, subscription_id
  from
    analysis
  group by
    id,
    title,
    tag_key,
    current_value,
    resource_group, subscription_id
)
select
  id as resource,
  case
    when bool_and(can_skip) then 'skip'
    when bool_and(status) then 'ok'
    else 'alarm'
  end as status,
  case
    when bool_and(can_skip) then title || ' has no matching tag keys.'
    when bool_and(status) then title || ' has expected tag values for tags: ' || array_to_string(array_agg(tag_key) filter(where status), ', ') || '.'
    else title || ' has unexpected tag values for tags: ' || array_to_string(array_agg(tag_key) filter(where not status), ', ') || '.'
  end as reason,
  resource_group, subscription_id
from
  status_by_tag
group by
  id,
  title,
  resource_group, subscription_id
union all
select
  id as resource,
  'skip' as status,
  title || ' has no tags.' as reason,
  resource_group, subscription_id
from
  azure_sql_database
where
  tags::text = '{}'
  or tags is null
union all
select
  id as resource,
  'skip' as status,
  title || ' has tags but no expected tag values are set.' as reason,
  resource_group, subscription_id
from
  azure_sql_database
where
  $1::text = '{}'
  and tags::text <> '{}'
  or tags is not null;