Class: RubyPgExtras::DiagnoseData

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_pg_extras/diagnose_data.rb

Constant Summary collapse

PG_EXTRAS_TABLE_CACHE_HIT_MIN_EXPECTED = 
"0.985"
PG_EXTRAS_INDEX_CACHE_HIT_MIN_EXPECTED = 
"0.985"
PG_EXTRAS_UNUSED_INDEXES_MAX_SCANS = 
20
PG_EXTRAS_UNUSED_INDEXES_MIN_SIZE_BYTES =

1000000 bytes

SizeParser.to_i("1 MB")
PG_EXTRAS_NULL_INDEXES_MIN_SIZE_MB =

1 MB

1
PG_EXTRAS_NULL_MIN_NULL_FRAC_PERCENT =

50%

50
PG_EXTRAS_BLOAT_MIN_VALUE = 
10
PG_EXTRAS_OUTLIERS_MIN_EXEC_RATIO =

33%

33

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.call ⇒ Object 



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# File 'lib/ruby_pg_extras/diagnose_data.rb', line 14

def self.call
  new.call
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/ruby_pg_extras/diagnose_data.rb', line 18

def call
  [
    :missing_fk_indexes,
    :missing_fk_constraints,
    :random_page_cost,
    :work_mem,
    :table_cache_hit,
    :index_cache_hit,
    :unused_indexes,
    :null_indexes,
    :bloat,
    :duplicate_indexes,
  ].yield_self do |checks|
    extensions_data = query_module.extensions(in_format: :hash)

    pg_stats_enabled = extensions_data.find do |el|
      el.fetch("name") == "pg_stat_statements"
    end.fetch("installed_version", false)

    ssl_info = extensions_data.find do |el|
      el.fetch("name") == "sslinfo"
    end
    ssl_info_enabled = ssl_info != nil && ssl_info.fetch("installed_version", false)

    if pg_stats_enabled
      checks = checks.concat([:outliers])
    end

    if ssl_info_enabled
      checks = checks.concat([:ssl_used])
    end

    checks
  end.map do |check|
    send(check).merge(check_name: check)
  end
end