in postgresql_metrics/metrics_gatherer.py [0:0]
def get_stats_index_hit_rates(_data_dir, db_connection):
index_hit_rates = get_index_hit_rates(db_connection)
metrics = []
for db_name, table_name, index_hit_ratio in index_hit_rates:
if index_hit_ratio is not None:
metrics.append(metric_index_hit_ratio(db_name, table_name, index_hit_ratio))
return metrics