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// Copyright (C) 2018 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
//
// http://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.
import {slowlyCountRows} from '../../common/query_iterator';
import {fromNs, toNsCeil, toNsFloor} from '../../common/time';
import {LIMIT} from '../../common/track_data';
import {
TrackController,
trackControllerRegistry,
} from '../../controller/track_controller';
import {ANDROID_LOGS_TRACK_KIND, Config, Data} from './common';
class AndroidLogTrackController extends TrackController<Config, Data> {
static readonly kind = ANDROID_LOGS_TRACK_KIND;
async onBoundsChange(start: number, end: number, resolution: number):
Promise<Data> {
const startNs = toNsFloor(start);
const endNs = toNsCeil(end);
// |resolution| is in s/px the frontend wants.
const quantNs = toNsCeil(resolution);
const rawResult = await this.query(`
select
cast(ts / ${quantNs} as integer) * ${quantNs} as ts_quant,
prio,
count(prio)
from android_logs
where ts >= ${startNs} and ts <= ${endNs}
group by ts_quant, prio
order by ts_quant, prio limit ${LIMIT};`);
const rowCount = slowlyCountRows(rawResult);
const result = {
start,
end,
resolution,
length: rowCount,
numEvents: 0,
timestamps: new Float64Array(rowCount),
priorities: new Uint8Array(rowCount),
};
const cols = rawResult.columns;
for (let i = 0; i < rowCount; i++) {
result.timestamps[i] = fromNs(+cols[0].longValues![i]);
const prio = Math.min(+cols[1].longValues![i], 7);
result.priorities[i] |= (1 << prio);
result.numEvents += +cols[2].longValues![i];
}
return result;
}
}
trackControllerRegistry.register(AndroidLogTrackController);
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