package org.act.tstream.container.cgroup.core;
import java.io.IOException;
import org.act.tstream.container.CgroupUtils;
import org.act.tstream.container.Constants;
import org.act.tstream.container.SubSystemType;
public class FreezerCore implements CgroupCore {
public static final String FREEZER_STATE = "/freezer.state";
private final String dir;
public FreezerCore(String dir) {
this.dir = dir;
}
@Override
public SubSystemType getType() {
// TODO Auto-generated method stub
return SubSystemType.freezer;
}
public void setState(State state) throws IOException {
CgroupUtils.writeFileByLine(Constants.getDir(this.dir, FREEZER_STATE),
state.name().toUpperCase());
}
public State getState() throws IOException {
return State.getStateValue(CgroupUtils.readFileByLine(
Constants.getDir(this.dir, FREEZER_STATE)).get(0));
}
public enum State {
frozen, freezing, thawed;
public static State getStateValue(String state) {
if (state.equals("FROZEN"))
return frozen;
else if (state.equals("FREEZING"))
return freezing;
else if (state.equals("THAWED"))
return thawed;
else
return null;
}
}
}