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--
-- 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/power_drain_in_watts.sql');
-- SPAN_JOIN does not yet support non-integer partitions so add an integer
-- column that corresponds to the power rail name.
DROP TABLE IF EXISTS power_rail_name_mapping;
CREATE TABLE power_rail_name_mapping AS
SELECT DISTINCT name,
ROW_NUMBER() OVER() AS idx
FROM drain_in_watts;
DROP VIEW IF EXISTS mapped_drain_in_watts;
CREATE VIEW mapped_drain_in_watts AS
SELECT d.name, ts, dur, drain_w, idx
FROM drain_in_watts d
JOIN power_rail_name_mapping p ON d.name = p.name;
DROP TABLE IF EXISTS real_{{input}}_power;
CREATE VIRTUAL TABLE real_{{input}}_power USING SPAN_JOIN(
{{input}},
mapped_drain_in_watts PARTITIONED idx
);
-- Actual power usage for chrome across the categorised slices contained in the
-- input table broken down by subsystem.
DROP VIEW IF EXISTS {{output}};
CREATE VIEW {{output}} AS
SELECT s.id,
ts,
dur,
{{category}},
subsystem,
joules,
joules / dur * 1e9 AS drain_w
FROM (
SELECT id,
subsystem,
SUM(drain_w * dur / 1e9) AS joules
FROM real_{{input}}_power
JOIN power_counters
WHERE real_{{input}}_power.name = power_counters.name
GROUP BY id,
subsystem
) p
JOIN {{input}} s
WHERE s.id = p.id
ORDER BY s.id;
SELECT id,
subsystem,
SUM(drain_w * dur / 1e9) AS joules
FROM real_{{input}}_power
JOIN power_counters
WHERE real_{{input}}_power.name = power_counters.name
GROUP BY id,
subsystem
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