1/*
2 * Copyright (C) 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import {Timestamp} from 'common/time';
18import {AddOperation} from 'trace/tree_node/operations/add_operation';
19import {PropertyTreeNode} from 'trace/tree_node/property_tree_node';
20import {DEFAULT_PROPERTY_TREE_NODE_FACTORY} from 'trace/tree_node/property_tree_node_factory';
21
22export type MakeTimestampStrategyType = (valueNs: bigint) => Timestamp;
23
24export class TransformToTimestamp extends AddOperation<PropertyTreeNode> {
25  constructor(
26    private readonly timestampNames: string[],
27    private readonly makeTimestampStrategy: MakeTimestampStrategyType,
28  ) {
29    super();
30  }
31
32  override makeProperties(value: PropertyTreeNode): PropertyTreeNode[] {
33    const timestampNodes: PropertyTreeNode[] = [];
34
35    for (const property of value.getAllChildren()) {
36      if (this.timestampNames.includes(property.name)) {
37        const nanosLong = property.getValue();
38        if (nanosLong === undefined || nanosLong === null) {
39          return [];
40        }
41        const timestamp = this.makeTimestampStrategy(
42          BigInt(nanosLong.toString()),
43        );
44        const timestampNode =
45          DEFAULT_PROPERTY_TREE_NODE_FACTORY.makeProtoProperty(
46            value.id,
47            property.name,
48            timestamp,
49          );
50        timestampNodes.push(timestampNode);
51      }
52    }
53
54    value.getAllChildren().forEach((property) => {
55      this.apply(property);
56    });
57
58    return timestampNodes;
59  }
60}
61