/**
* 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.alibaba.flink.utils;
import com.alibaba.fastjson.JSON;
import com.google.common.base.Joiner;
import java.util.LinkedList;
/**
* @author Jark (wuchong.wc@alibaba-inc.com)
*/
public class Utils {
public static Object from_json(String json) {
if (json == null) {
return null;
} else {
// return JSON.parse(json);
return JSON.parse(json);
}
}
/**
* seconds to string like '30m 40s' and '1d 20h 30m 40s'
*
* @param secs
* @return
*/
public static String prettyUptime(int secs) {
String[][] PRETTYSECDIVIDERS = { new String[] {"ms", "1000"}, new String[] { "s", "60" }, new String[] { "m", "60" }, new String[] { "h", "24" },
new String[] { "d", null } };
int diversize = PRETTYSECDIVIDERS.length;
LinkedList<String> tmp = new LinkedList<>();
int div = secs;
for (int i = 0; i < diversize; i++) {
if (PRETTYSECDIVIDERS[i][1] != null) {
Integer d = Integer.parseInt(PRETTYSECDIVIDERS[i][1]);
tmp.addFirst(div % d + PRETTYSECDIVIDERS[i][0]);
div = div / d;
} else {
tmp.addFirst(div + PRETTYSECDIVIDERS[i][0]);
}
if (div <= 0 ) break;
}
Joiner joiner = Joiner.on(" ");
return joiner.join(tmp);
}
public static Integer getInt(Object o, Integer defaultValue) {
if (null == o) {
return defaultValue;
}
if (o instanceof Integer ||
o instanceof Short ||
o instanceof Byte) {
return ((Number) o).intValue();
} else if (o instanceof Long) {
final long l = (Long) o;
if (l <= Integer.MAX_VALUE && l >= Integer.MIN_VALUE) {
return (int) l;
}
} else if (o instanceof String) {
return Integer.parseInt((String) o);
}
throw new IllegalArgumentException("Don't know how to convert " + o + " to int");
}
public static Integer getInt(Object o) {
Integer result = getInt(o, null);
if (null == result) {
throw new IllegalArgumentException("Don't know how to convert null to int");
}
return result;
}
public static Long parseLong(Object o) {
if (o == null) {
return null;
}
if (o instanceof String) {
return Long.valueOf(String.valueOf(o));
} else if (o instanceof Integer) {
Integer value = (Integer) o;
return Long.valueOf(value);
} else if (o instanceof Long) {
return (Long) o;
} else {
throw new RuntimeException("Invalid value " + o.getClass().getName() + " " + o);
}
}
public static Long parseLong(Object o, long defaultValue) {
if (o == null) {
return defaultValue;
}
if (o instanceof String) {
return Long.valueOf(String.valueOf(o));
} else if (o instanceof Integer) {
Integer value = (Integer) o;
return Long.valueOf((Integer) value);
} else if (o instanceof Long) {
return (Long) o;
} else {
return defaultValue;
}
}
}