package com.bigdata.ganglia;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
abstract public class AbstractMetrics implements IGangliaAttributes {
public static final Map<String, String[]> emptyMap = Collections
.emptyMap();
/**
* Return an extraValues map containing the optional title and/or
* description.
*
* @param title
* The title (optional).
* @param description
* The description (optional).
*
* @return The map.
*/
static public Map<String, String[]> getMap(final String group,
final String title, final String description) {
if (group == null && title == null && description == null) {
return emptyMap;
}
final Map<String, String[]> map = new HashMap<String, String[]>();
if (group != null) {
map.put(ATTR_GROUP, new String[] { group });
}
if (title != null) {
map.put(ATTR_TITLE, new String[] { title });
}
if (description != null) {
map.put(ATTR_DESC, new String[] { description });
}
return map;
}
static class NV {
final public String name;
final public String[] value;
public NV(final String name, final String[] value) {
if (name == null || value == null || value.length == 0)
throw new IllegalArgumentException();
this.name = name;
this.value = value;
}
}
static Map<String, String[]> getMap(final NV[] a) {
if (a == null || a.length == 0)
return emptyMap;
final Map<String, String[]> m = new HashMap<String, String[]>();
for (NV t : a) {
if (t == null)
throw new IllegalArgumentException();
m.put(t.name, t.value);
}
return m;
}
protected final String hostName;
protected final GangliaSlopeEnum slope;
protected final int tmax;
protected final int dmax;
/**
* @param hostName
* The name of this host.
* @param slope
* The default value to use in the declarations.
* @param tmax
* The value of tmax to use in the declarations.
* @param dmax
* The value of dmax to use in the declarations.
*/
public AbstractMetrics(final String hostName,
final GangliaSlopeEnum slope, final int tmax, final int dmax) {
if (hostName == null)
throw new IllegalArgumentException();
if (slope == null)
throw new IllegalArgumentException();
if (tmax < 0)
throw new IllegalArgumentException();
if (dmax < 0)
throw new IllegalArgumentException();
this.hostName = hostName;
this.slope = slope;
this.tmax = tmax;
this.dmax = dmax;
}
}