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/*
* Copyright (C) 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
*
* 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.
*/
package com.android.server.wifi;
import android.provider.DeviceConfig;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
/**
* This class allows getting all configurable flags from DeviceConfig.
*/
public class DeviceConfigFacade {
private static final int DEFAULT_ABNORMAL_CONNECTION_DURATION_MS =
(int) TimeUnit.SECONDS.toMillis(30);
private static final String NAMESPACE = "wifi";
// Default duration for evaluating Wifi condition to trigger a data stall
// measured in milliseconds
public static final int DEFAULT_DATA_STALL_DURATION_MS = 1500;
// Default threshold of Tx throughput below which to trigger a data stall measured in Mbps
public static final int DEFAULT_DATA_STALL_TX_TPUT_THR_MBPS = 2;
// Default threshold of Rx throughput below which to trigger a data stall measured in Mbps
public static final int DEFAULT_DATA_STALL_RX_TPUT_THR_MBPS = 2;
// Default threshold of Tx packet error rate above which to trigger a data stall in percentage
public static final int DEFAULT_DATA_STALL_TX_PER_THR = 90;
// Default threshold of CCA level above which to trigger a data stall in percentage
public static final int DEFAULT_DATA_STALL_CCA_LEVEL_THR = 100;
/**
* Gets the feature flag for reporting abnormally long connections.
*/
public boolean isAbnormalConnectionBugreportEnabled() {
return DeviceConfig.getBoolean(NAMESPACE, "abnormal_connection_bugreport_enabled", false);
}
/**
* Gets the threshold for classifying abnormally long connections.
*/
public int getAbnormalConnectionDurationMs() {
return DeviceConfig.getInt(NAMESPACE, "abnormal_connection_duration_ms",
DEFAULT_ABNORMAL_CONNECTION_DURATION_MS);
}
/**
* Adds a listener that will be run on the specified executor.
* @param executor
* @param onPropertiesChangedListener
*/
public void addOnPropertiesChangedListener(Executor executor,
DeviceConfig.OnPropertiesChangedListener onPropertiesChangedListener) {
DeviceConfig.addOnPropertiesChangedListener(NAMESPACE, executor,
onPropertiesChangedListener);
}
/**
* Gets the duration of evaluating Wifi condition to trigger a data stall.
*/
public int getDataStallDurationMs() {
return DeviceConfig.getInt(NAMESPACE, "data_stall_duration_ms",
DEFAULT_DATA_STALL_DURATION_MS);
}
/**
* Gets the threshold of Tx throughput below which to trigger a data stall.
*/
public int getDataStallTxTputThrMbps() {
return DeviceConfig.getInt(NAMESPACE, "data_stall_tx_tput_thr_mbps",
DEFAULT_DATA_STALL_TX_TPUT_THR_MBPS);
}
/**
* Gets the threshold of Rx throughput below which to trigger a data stall.
*/
public int getDataStallRxTputThrMbps() {
return DeviceConfig.getInt(NAMESPACE, "data_stall_rx_tput_thr_mbps",
DEFAULT_DATA_STALL_RX_TPUT_THR_MBPS);
}
/**
* Gets the threshold of Tx packet error rate above which to trigger a data stall.
*/
public int getDataStallTxPerThr() {
return DeviceConfig.getInt(NAMESPACE, "data_stall_tx_per_thr",
DEFAULT_DATA_STALL_TX_PER_THR);
}
/**
* Gets the threshold of CCA level above which to trigger a data stall.
*/
public int getDataStallCcaLevelThr() {
return DeviceConfig.getInt(NAMESPACE, "data_stall_cca_level_thr",
DEFAULT_DATA_STALL_CCA_LEVEL_THR);
}
}
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