src/trace_processor/metrics/sql/trace_metadata.sql

--
-- Copyright 2019 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.
--

-- Expose all clock snapshots as instant events.
DROP VIEW IF EXISTS trace_metadata_event;
CREATE PERFETTO VIEW trace_metadata_event AS
SELECT
  'slice' AS track_type,
  'Clock Snapshots' AS track_name,
  ts,
  0 AS dur,
  'Snapshot' AS slice_name
FROM clock_snapshot
GROUP BY ts;

DROP VIEW IF EXISTS trace_metadata_output;
CREATE PERFETTO VIEW trace_metadata_output AS
SELECT TraceMetadata(
  'trace_duration_ns', CAST(trace_dur() AS INT),
  'trace_uuid', (SELECT str_value FROM metadata WHERE name = 'trace_uuid'),
  'android_build_fingerprint', (
    SELECT str_value FROM metadata WHERE name = 'android_build_fingerprint'
  ),
  'statsd_triggering_subscription_id', (
    SELECT int_value FROM metadata
    WHERE name = 'statsd_triggering_subscription_id'
  ),
  'unique_session_name', (
    SELECT str_value FROM metadata
    WHERE name = 'unique_session_name'
  ),
  'trace_size_bytes', (
    SELECT int_value FROM metadata
    WHERE name = 'trace_size_bytes'
  ),
  'trace_trigger', (
    SELECT RepeatedField(slice.name)
    FROM track JOIN slice ON track.id = slice.track_id
    WHERE track.name = 'Trace Triggers'
  ),
  'trace_config_pbtxt', (
    SELECT str_value FROM metadata
    WHERE name = 'trace_config_pbtxt'
  ),
  'sched_duration_ns', (
    SELECT MAX(ts) - MIN(ts) FROM sched
  ),
  'tracing_started_ns', (
    SELECT int_value FROM metadata
    WHERE name='tracing_started_ns'
  )
);