| /* |
| * 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.livy.rsc.driver; |
| |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import com.fasterxml.jackson.annotation.JsonRawValue; |
| |
| public class Statement { |
| public final Integer id; |
| public final String code; |
| public final AtomicReference<StatementState> state; |
| @JsonRawValue |
| public volatile String output; |
| public double progress; |
| public long started = 0; |
| public long completed = 0; |
| |
| public Statement(Integer id, String code, StatementState state, String output) { |
| this.id = id; |
| this.code = code; |
| this.state = new AtomicReference<>(state); |
| this.output = output; |
| this.progress = 0.0; |
| } |
| |
| public Statement() { |
| this(null, null, null, null); |
| } |
| |
| public boolean compareAndTransit(final StatementState from, final StatementState to) { |
| if (state.compareAndSet(from, to)) { |
| StatementState.validate(from, to); |
| return true; |
| } |
| return false; |
| } |
| |
| public void updateProgress(double p) { |
| if (this.state.get().isOneOf(StatementState.Cancelled, StatementState.Available)) { |
| this.progress = 1.0; |
| } else { |
| this.progress = p; |
| } |
| } |
| } |