com.sequenceiq.ambari.shell.flash.InstallProgress.java Source code

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Here is the source code for com.sequenceiq.ambari.shell.flash.InstallProgress.java

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/**
 * 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 com.sequenceiq.ambari.shell.flash;

import static java.lang.Math.round;

import java.math.BigDecimal;

import org.springframework.shell.core.JLineShellComponent;

import com.sequenceiq.ambari.client.AmbariClient;

/**
 * Show the install progress in % value.
 */
public class InstallProgress extends AbstractFlash {

    private static final int SUCCESS = 100;
    private static final int FAILED = -1;
    private final boolean exit;
    private AmbariClient client;
    private volatile boolean done;

    public InstallProgress(JLineShellComponent shell, AmbariClient client, boolean exit) {
        super(shell, FlashType.INSTALL);
        this.client = client;
        this.exit = exit;
    }

    @Override
    public String getText() {
        StringBuilder sb = new StringBuilder();
        if (!done) {
            BigDecimal progress = client.getRequestProgress();
            if (progress != null) {
                BigDecimal decimal = progress.setScale(2, BigDecimal.ROUND_HALF_UP);
                int intValue = decimal.intValue();
                if (intValue != SUCCESS && intValue != FAILED) {
                    sb.append("Installation: ").append(decimal).append("% ");
                    int rounded = round(progress.setScale(0, BigDecimal.ROUND_UP).intValue() / 10);
                    for (int i = 0; i < 10; i++) {
                        if (i < rounded) {
                            sb.append("=");
                        } else {
                            sb.append("-");
                        }
                    }
                } else if (intValue == FAILED) {
                    sb.append("Installation: FAILED");
                    done = true;
                } else {
                    sb.append("Installation: COMPLETE");
                    done = true;
                }
            } else {
                sb.append("Installation: WAITING..");
            }
        } else {
            if (exit) {
                System.exit(0);
            }
        }
        return sb.toString();
    }
}