--
-- Copyright 2020 The Android Open Source Project
--
-- Licensed under the Apache License, Version 2.0 (the 'License');
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--     https://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an 'AS IS' BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--

-- This is a templated metric that takes 3 parameters:
-- input: name of a table/view which must have columns: id, ts, dur and a
--   "category" column
-- output: name of the view that will be created
-- category: name of the category column in the input table, which will be
--   preserved in the output

SELECT RUN_METRIC('chrome/chrome_processes.sql');
SELECT RUN_METRIC('android/android_proxy_power.sql');

-- View containing estimated power slices broken down by cpu.
DROP VIEW IF EXISTS power_per_chrome_thread;
CREATE VIEW power_per_chrome_thread AS
SELECT ts,
  dur,
  cpu,
  power_per_thread.utid,
  end_state,
  priority,
  power_ma,
  power_per_thread.type,
  name AS thread_name,
  upid,
  is_main_thread
FROM power_per_thread
JOIN chrome_thread
WHERE power_per_thread.utid = chrome_thread.utid;

DROP TABLE IF EXISTS {{input}}_power;
CREATE VIRTUAL TABLE {{input}}_power USING SPAN_JOIN(
  {{input}},
  power_per_chrome_thread PARTITIONED utid
);

-- Estimated power usage for chrome across the categroy slices contained in
-- input.
DROP VIEW IF EXISTS {{output}};
CREATE VIEW {{output}} AS
SELECT id,
  ts,
  dur,
  {{category}},
  mas,
  mas / dur * 1e9 AS ma
FROM (
    SELECT s.id,
      s.ts,
      s.dur,
      s.{{category}},
      SUM(r.power_ma * r.dur) / 1e9 AS mas
    FROM {{input}}_power r
    JOIN {{input}} s
    WHERE r.id = s.id
    GROUP BY s.id
  );