| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.accumulo.fate; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.EnumSet; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Transient in memory store for transactions. |
| */ |
| public class SimpleStore<T> implements TStore<T> { |
| |
| private long nextId = 1; |
| private Map<Long,TStatus> statuses = new HashMap<>(); |
| private Set<Long> reserved = new HashSet<>(); |
| |
| @Override |
| public long create() { |
| statuses.put(nextId, TStatus.NEW); |
| return nextId++; |
| } |
| |
| @Override |
| public long reserve() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void reserve(long tid) { |
| if (reserved.contains(tid)) |
| throw new IllegalStateException(); // zoo store would wait, but do not expect test to reserve |
| // twice... if test change, then change this |
| reserved.add(tid); |
| } |
| |
| @Override |
| public void unreserve(long tid, long deferTime) { |
| if (!reserved.remove(tid)) { |
| throw new IllegalStateException(); |
| } |
| } |
| |
| @Override |
| public Repo<T> top(long tid) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void push(long tid, Repo<T> repo) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void pop(long tid) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public org.apache.accumulo.fate.TStore.TStatus getStatus(long tid) { |
| if (!reserved.contains(tid)) |
| throw new IllegalStateException(); |
| |
| TStatus status = statuses.get(tid); |
| if (status == null) |
| return TStatus.UNKNOWN; |
| return status; |
| } |
| |
| @Override |
| public void setStatus(long tid, org.apache.accumulo.fate.TStore.TStatus status) { |
| if (!reserved.contains(tid)) |
| throw new IllegalStateException(); |
| if (!statuses.containsKey(tid)) |
| throw new IllegalStateException(); |
| statuses.put(tid, status); |
| } |
| |
| @Override |
| public org.apache.accumulo.fate.TStore.TStatus waitForStatusChange(long tid, |
| EnumSet<org.apache.accumulo.fate.TStore.TStatus> expected) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void setProperty(long tid, String prop, Serializable val) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Serializable getProperty(long tid, String prop) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void delete(long tid) { |
| if (!reserved.contains(tid)) |
| throw new IllegalStateException(); |
| statuses.remove(tid); |
| } |
| |
| @Override |
| public List<Long> list() { |
| return new ArrayList<>(statuses.keySet()); |
| } |
| |
| @Override |
| public long timeCreated(long tid) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public List<ReadOnlyRepo<T>> getStack(long tid) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| } |