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/*
* Copyright (C) 2022 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.adservices.service.measurement;
import com.android.adservices.service.Flags;
import java.util.concurrent.TimeUnit;
/**
* Class for holding privacy related parameters.
* All values in this class are temporary and subject to change based on feedback and testing.
*/
public final class PrivacyParams {
/**
* Max reports for 'Navigation' {@link Source}.
*/
public static final int NAVIGATION_SOURCE_MAX_REPORTS = 3;
/**
* Max reports for 'Event' {@link Source}.
*/
public static final int EVENT_SOURCE_MAX_REPORTS = 1;
/**
* Max reports for Install Attributed 'Event' {@link Source}.
*/
public static final int INSTALL_ATTR_EVENT_SOURCE_MAX_REPORTS = 2;
/**
* Rate limit window for (Source Site, Destination Site, Reporting Site, Window) privacy unit.
* 30 days.
*/
public static final long RATE_LIMIT_WINDOW_MILLISECONDS = TimeUnit.DAYS.toMillis(30);
/**
* Early reporting window for 'Navigation' {@link Source}.
* 2 days and 7 days.
*/
public static final long[] NAVIGATION_EARLY_REPORTING_WINDOW_MILLISECONDS = new long[]{
TimeUnit.DAYS.toMillis(2), TimeUnit.DAYS.toMillis(7)
};
/**
* Early reporting window for 'Event' {@link Source}.
* No windows.
*/
public static final long[] EVENT_EARLY_REPORTING_WINDOW_MILLISECONDS = new long[]{ };
/**
* Early reporting window for Install Attributed 'Navigation' {@link Source}. 2 days and 7 days.
*/
public static final long[] INSTALL_ATTR_NAVIGATION_EARLY_REPORTING_WINDOW_MILLISECONDS =
NAVIGATION_EARLY_REPORTING_WINDOW_MILLISECONDS;
/**
* Early reporting window for Install Attributed 'Event' {@link Source}.
* 2 days.
*/
public static final long[] INSTALL_ATTR_EVENT_EARLY_REPORTING_WINDOW_MILLISECONDS =
new long[]{ TimeUnit.DAYS.toMillis(2) };
/**
* Trigger data cardinality for 'Event' {@link Source} attribution.
*/
public static final int EVENT_TRIGGER_DATA_CARDINALITY = 2;
/**
* Trigger data cardinality for 'Navigation' {@link Source} attribution.
*/
private static final int NAVIGATION_TRIGGER_DATA_CARDINALITY = 8;
public static int getNavigationTriggerDataCardinality() {
return NAVIGATION_TRIGGER_DATA_CARDINALITY;
}
/**
* L1, the maximum sum of the contributions (values) across all buckets for a given source
* event.
*/
public static final int MAX_SUM_OF_AGGREGATE_VALUES_PER_SOURCE = 65536;
/** Amount of bytes allocated for aggregate histogram bucket */
public static final int AGGREGATE_HISTOGRAM_BUCKET_BYTE_SIZE = 16;
/** Amount of bytes allocated for aggregate histogram value */
public static final int AGGREGATE_HISTOGRAM_VALUE_BYTE_SIZE = 4;
/** Minimum time an aggregate report is delayed after trigger */
public static final long AGGREGATE_REPORT_MIN_DELAY = TimeUnit.MINUTES.toMillis(0L);
/** Maximum time an aggregate report is delayed after trigger */
public static final long AGGREGATE_REPORT_DELAY_SPAN = TimeUnit.MINUTES.toMillis(10L);
private static final int PRIVACY_EPSILON = 14;
public static int getPrivacyEpsilon() {
return PRIVACY_EPSILON;
}
public static final double NUMBER_EQUAL_THRESHOLD = 0.0000001D;
/**
* Maximum early reporting windows configured through {@link
* Flags#MEASUREMENT_EVENT_REPORTS_VTC_EARLY_REPORTING_WINDOWS} or {@link
* Flags#MEASUREMENT_EVENT_REPORTS_CTC_EARLY_REPORTING_WINDOWS}.
*/
public static final int MAX_CONFIGURABLE_EVENT_REPORT_EARLY_REPORTING_WINDOWS = 2;
private PrivacyParams() {
}
}
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