1 /*
2  * Copyright (C) 2022 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 
17 package com.android.server.biometrics.log;
18 
19 /**
20  * Probe for loggable attributes that can be continuously monitored, such as ambient light.
21  *
22  * Disable probes when the sensors are in states that are not interesting for monitoring
23  * purposes to save power.
24  */
25 public interface Probe {
26     /** Ensure the probe is actively sampling for new data. */
enable()27     void enable();
28     /** Stop sampling data. */
disable()29     void disable();
30     /** Same as {@link #disable()} and ignores all future calls to this probe. */
destroy()31     void destroy();
32 }
33