mirror of
https://codeberg.org/Freeyourgadget/Gadgetbridge
synced 2024-06-21 12:30:23 +02:00
210 lines
8.3 KiB
Java
210 lines
8.3 KiB
Java
/* Copyright (C) 2023 José Rebelo
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This file is part of Gadgetbridge.
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Gadgetbridge is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Gadgetbridge is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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package nodomain.freeyourgadget.gadgetbridge.service.devices.huami.operations;
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import android.bluetooth.BluetoothGatt;
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import android.bluetooth.BluetoothGattCharacteristic;
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import android.widget.Toast;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import java.util.Locale;
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import nodomain.freeyourgadget.gadgetbridge.Logging;
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import nodomain.freeyourgadget.gadgetbridge.devices.huami.HuamiCoordinator;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
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import nodomain.freeyourgadget.gadgetbridge.service.devices.huami.HuamiSupport;
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import nodomain.freeyourgadget.gadgetbridge.util.CheckSums;
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import nodomain.freeyourgadget.gadgetbridge.util.FileUtils;
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import nodomain.freeyourgadget.gadgetbridge.util.GB;
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/**
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* A repeating fetch operation. This operation repeats the fetch up to a certain number of times, or
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* until the fetch timestamp matches the current time. For every fetch, a new operation must
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* be created, i.e. an operation may not be reused for multiple fetches.
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*/
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public abstract class AbstractRepeatingFetchOperation extends AbstractFetchOperation {
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private static final Logger LOG = LoggerFactory.getLogger(AbstractRepeatingFetchOperation.class);
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private final ByteArrayOutputStream byteStreamBuffer = new ByteArrayOutputStream(140);
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protected final byte dataType;
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public AbstractRepeatingFetchOperation(final HuamiSupport support, final byte dataType, final String dataName) {
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super(support);
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this.dataType = dataType;
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setName("fetching " + dataName);
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}
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@Override
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protected void startFetching(final TransactionBuilder builder) {
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final GregorianCalendar sinceWhen = getLastSuccessfulSyncTime();
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LOG.info("start {} since {}", getName(), sinceWhen.getTime());
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startFetching(builder, dataType, sinceWhen);
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}
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/**
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* Handle the buffered data.
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*
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* @param timestamp The timestamp of the first sample. This function should update this to the
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* timestamp of the last processed sample.
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* @param bytes the buffered bytes
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* @return true on success
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*/
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protected abstract boolean handleActivityData(GregorianCalendar timestamp, byte[] bytes);
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@Override
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protected boolean handleActivityFetchFinish(final boolean success) {
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LOG.info("{} has finished round {}: {}, got {} bytes in buffer", getName(), fetchCount, success, byteStreamBuffer.size());
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if (!success) {
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super.handleActivityFetchFinish(false);
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return false;
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}
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if (byteStreamBuffer.size() == 0) {
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return super.handleActivityFetchFinish(true);
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}
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final byte[] bytes = byteStreamBuffer.toByteArray();
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final GregorianCalendar timestamp = (GregorianCalendar) this.startTimestamp.clone();
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// Uncomment to dump the bytes to external storage for debugging
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//dumpBytesToExternalStorage(bytes, timestamp);
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final boolean handleSuccess = handleActivityData(timestamp, bytes);
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if (!handleSuccess) {
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super.handleActivityFetchFinish(false);
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return false;
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}
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timestamp.add(Calendar.MINUTE, 1);
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saveLastSyncTimestamp(timestamp);
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if (needsAnotherFetch(timestamp)) {
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byteStreamBuffer.reset();
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try {
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final boolean keepActivityDataOnDevice = HuamiCoordinator.getKeepActivityDataOnDevice(getDevice().getAddress());
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sendAck2021(keepActivityDataOnDevice);
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startFetching();
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return true;
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} catch (final IOException ex) {
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LOG.error("Error starting another round of " + getName(), ex);
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super.handleActivityFetchFinish(false);
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return false;
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}
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}
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final boolean superSuccess = super.handleActivityFetchFinish(true);
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postActivityFetchFinish(superSuccess);
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return superSuccess;
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}
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protected void postActivityFetchFinish(final boolean success) {
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}
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@Override
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protected boolean validChecksum(final int crc32) {
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return crc32 == CheckSums.getCRC32(byteStreamBuffer.toByteArray());
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}
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@Override
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public boolean onCharacteristicRead(final BluetoothGatt gatt, final BluetoothGattCharacteristic characteristic, final int status) {
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LOG.debug("characteristic read: {}: {}", characteristic.getUuid(), Logging.formatBytes(characteristic.getValue()));
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return super.onCharacteristicRead(gatt, characteristic, status);
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}
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@Override
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protected void handleActivityNotif(final byte[] value) {
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LOG.debug("{} data: {}", getName(), Logging.formatBytes(value));
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if (!isOperationRunning()) {
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LOG.error("ignoring {} notification because operation is not running. Data length: {}", getName(), value.length);
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getSupport().logMessageContent(value);
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return;
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}
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if ((byte) (lastPacketCounter + 1) == value[0]) {
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// TODO we should handle skipped or repeated bytes more gracefully
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lastPacketCounter++;
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bufferActivityData(value);
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} else {
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GB.toast("Error " + getName() + ", invalid package counter: " + value[0] + ", last was: " + lastPacketCounter, Toast.LENGTH_LONG, GB.ERROR);
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handleActivityFetchFinish(false);
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}
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}
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@Override
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protected void bufferActivityData(final byte[] value) {
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byteStreamBuffer.write(value, 1, value.length - 1); // skip the counter
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}
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private boolean needsAnotherFetch(final GregorianCalendar lastSyncTimestamp) {
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final long lastFetchRange = lastSyncTimestamp.getTimeInMillis() - startTimestamp.getTimeInMillis();
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if (lastFetchRange < 1000L) {
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LOG.warn("Fetch round {} of {} got {} ms of data, stopping to avoid infinite loop", fetchCount, getName(), lastFetchRange);
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return false;
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}
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if (fetchCount > 5) {
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LOG.warn("Already have {} fetch rounds for {}, not doing another one", fetchCount, getName());
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return false;
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}
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if (lastSyncTimestamp.getTimeInMillis() >= System.currentTimeMillis()) {
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LOG.warn("Not doing another fetch since last synced timestamp is in the future: {}", lastSyncTimestamp.getTime());
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return false;
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}
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LOG.info("Doing another fetch since last sync timestamp is still too old: {}", lastSyncTimestamp.getTime());
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return true;
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}
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protected void dumpBytesToExternalStorage(final byte[] bytes, final GregorianCalendar timestamp) {
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try {
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final File externalFilesDir = FileUtils.getExternalFilesDir();
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final File targetDir = new File(externalFilesDir, "rawFetchOperations");
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targetDir.mkdirs();
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final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmssSSS", Locale.US);
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final String filename = getClass().getSimpleName() + "_"
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+ timestamp.getTime().getTime() + "_"
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+ dateFormat.format(timestamp.getTime()) + ".bin";
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final File outputFile = new File(targetDir, filename);
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final OutputStream outputStream = new FileOutputStream(outputFile);
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outputStream.write(bytes);
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outputStream.close();
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} catch (final Exception e) {
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LOG.error("Failed to dump bytes to storage", e);
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}
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}
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}
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