wlan_power_manager/
lib.rs

1// Copyright 2026 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use async_trait::async_trait;
6use fidl_fuchsia_power_system as fsystem;
7use log::warn;
8
9pub struct WakeLease {
10    _token: fsystem::LeaseToken,
11}
12
13impl WakeLease {
14    /// Constructs a WakeLease from an underlying token.
15    /// This is intended strictly for use in test environments.
16    #[doc(hidden)]
17    pub fn from_token_for_test(token: fsystem::LeaseToken) -> Self {
18        Self { _token: token }
19    }
20}
21
22#[async_trait]
23pub trait PowerManager: Send + Sync {
24    async fn take_wake_lease(&self, name: &str) -> Option<WakeLease>;
25}
26
27pub struct DevicePowerManager {
28    activity_governor: Option<fsystem::ActivityGovernorProxy>,
29}
30
31impl DevicePowerManager {
32    pub fn new(activity_governor: Option<fsystem::ActivityGovernorProxy>) -> Self {
33        Self { activity_governor }
34    }
35}
36
37#[async_trait]
38impl PowerManager for DevicePowerManager {
39    async fn take_wake_lease(&self, name: &str) -> Option<WakeLease> {
40        let activity_governor = self.activity_governor.as_ref()?;
41        match activity_governor.acquire_wake_lease(name).await {
42            Ok(Ok(token)) => Some(WakeLease { _token: token }),
43            Ok(Err(e)) => {
44                warn!("Failed to acquire wake lease {}: {:?}", name, e);
45                None
46            }
47            Err(e) => {
48                warn!("FIDL error when acquiring wake lease {}: {:?}", name, e);
49                None
50            }
51        }
52    }
53}
wlan_power_manager/lib.rs

wlan_power_manager/
lib.rs
