mirror of https://github.com/YTVanced/VancedMicroG
63 lines
2.3 KiB
Java
63 lines
2.3 KiB
Java
/*
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* Copyright (C) 2013-2017 microG Project Team
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.microg.gms.wearable;
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import android.content.Context;
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import android.content.SharedPreferences;
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import java.util.UUID;
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public class ClockworkNodePreferences {
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private static final String CLOCKWORK_NODE_PREFERENCES = "cw_node";
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private static final String CLOCKWORK_NODE_PREFERENCE_NODE_ID = "node_id";
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private static final String CLOCKWORK_NODE_PREFERENCE_NEXT_SEQ_ID_BLOCK = "nextSeqIdBlock";
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private static final Object lock = new Object();
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private static long seqIdBlock;
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private static long seqIdInBlock = -1;
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private Context context;
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public ClockworkNodePreferences(Context context) {
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this.context = context;
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}
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public String getLocalNodeId() {
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SharedPreferences preferences = context.getSharedPreferences(CLOCKWORK_NODE_PREFERENCES, Context.MODE_PRIVATE);
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String nodeId = preferences.getString(CLOCKWORK_NODE_PREFERENCE_NODE_ID, null);
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if (nodeId == null) {
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nodeId = UUID.randomUUID().toString();
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preferences.edit().putString(CLOCKWORK_NODE_PREFERENCE_NODE_ID, nodeId).apply();
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}
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return nodeId;
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}
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public long getNextSeqId() {
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synchronized (lock) {
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SharedPreferences preferences = context.getSharedPreferences(CLOCKWORK_NODE_PREFERENCES, Context.MODE_PRIVATE);
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if (seqIdInBlock < 0) seqIdInBlock = 1000;
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if (seqIdInBlock >= 1000) {
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seqIdBlock = preferences.getLong(CLOCKWORK_NODE_PREFERENCE_NEXT_SEQ_ID_BLOCK, 100);
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preferences.edit().putLong(CLOCKWORK_NODE_PREFERENCE_NEXT_SEQ_ID_BLOCK, seqIdBlock + seqIdInBlock).apply();
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seqIdInBlock = 0;
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}
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return seqIdBlock + seqIdInBlock++;
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}
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}
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}
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