package com.alibaba.jstorm.utils;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.apache.commons.lang.StringUtils;
import org.yaml.snakeyaml.Yaml;
import backtype.storm.Config;
public class Utils {
public static Map LoadProperty(String prop) {
Properties properties = new Properties();
Map conf = new HashMap();
try {
InputStream stream = new FileInputStream(prop);
properties.load(stream);
conf.putAll(properties);
return conf;
} catch (FileNotFoundException e) {
System.out.println("No such file " + prop);
return conf;
} catch (Exception e1) {
e1.printStackTrace();
return conf;
}
}
public static Map LoadYaml(String confPath) {
Map conf = new HashMap();
Yaml yaml = new Yaml();
try {
InputStream stream = new FileInputStream(confPath);
conf = (Map) yaml.load(stream);
if (conf == null || conf.isEmpty() == true) {
throw new RuntimeException("Failed to read config file");
}
} catch (FileNotFoundException e) {
System.out.println("No such file " + confPath);
throw new RuntimeException("No config file");
} catch (Exception e1) {
e1.printStackTrace();
throw new RuntimeException("Failed to read config file");
}
return conf;
}
public static Map LoadConf(String arg) {
if (arg.endsWith("yaml")) {
return LoadYaml(arg);
} else {
return LoadProperty(arg);
}
}
public static Config getConfig(String[] args) {
Config ret = new Config();
if (args == null || args.length == 0) {
return ret;
}
if (StringUtils.isBlank(args[0])) {
return ret;
}
Map conf = LoadConf(args[0]);
ret.putAll(conf);
return ret;
}
public static String getErrorInfo(Throwable error) {
try {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
error.printStackTrace(pw);
return sw.toString();
} catch (Exception e1) {
return "";
}
}
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 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 (Integer.MIN_VALUE <= l && l <= Integer.MAX_VALUE) {
return (int) l;
}
} else if (o instanceof Double) {
final double d = (Double) o;
if (Integer.MIN_VALUE <= d && d <= Integer.MAX_VALUE) {
return (int) d;
}
} else if (o instanceof String) {
return Integer.parseInt((String) o);
}
//
return defaultValue;
}
public static boolean getBoolean(Object o, boolean defaultValue) {
if (null == o) {
return defaultValue;
}
if (o instanceof Boolean) {
return (Boolean) o;
} else {
throw new IllegalArgumentException("Don't know how to convert " + o + " + to boolean");
}
}
}