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package nginx.unit;
import java.io.Serializable;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
import java.util.Collections;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
/**
* @author Andrey Kazankov
*/
public class Session implements HttpSession, Serializable
{
private final Map<String, Object> attributes = new HashMap<>();
private final long creation_time = new Date().getTime();
private long last_access_time = creation_time;
private long access_time = creation_time;
private int max_inactive_interval;
private String id;
private final Context context;
private boolean is_new = true;
private final HttpSessionAttributeListener attr_listener;
public Session(Context context, String id,
HttpSessionAttributeListener al, int max_inactive_interval)
{
this.id = id;
this.context = context;
attr_listener = al;
this.max_inactive_interval = max_inactive_interval;
}
public void setId(String id)
{
this.id = id;
}
@Override
public long getCreationTime()
{
return creation_time;
}
@Override
public String getId()
{
return id;
}
@Override
public long getLastAccessedTime()
{
return last_access_time;
}
@Override
public ServletContext getServletContext()
{
return context;
}
@Override
public void setMaxInactiveInterval(int i)
{
max_inactive_interval = i;
}
@Override
public int getMaxInactiveInterval()
{
return max_inactive_interval;
}
@Deprecated
@Override
public javax.servlet.http.HttpSessionContext getSessionContext()
{
return null;
}
@Override
public Object getAttribute(String s)
{
synchronized (attributes) {
return attributes.get(s);
}
}
@Deprecated
@Override
public Object getValue(String s)
{
return getAttribute(s);
}
@Override
public Enumeration<String> getAttributeNames()
{
synchronized (attributes) {
return Collections.enumeration(attributes.keySet());
}
}
@Deprecated
@Override
public String[] getValueNames()
{
synchronized (attributes) {
return attributes.keySet().toArray(new String[attributes.keySet().size()]);
}
}
@Override
public void setAttribute(String s, Object o)
{
Object old;
if (o != null && o instanceof HttpSessionBindingListener) {
HttpSessionBindingListener l = (HttpSessionBindingListener) o;
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s);
l.valueBound(e);
}
synchronized (attributes) {
if (o != null) {
old = attributes.put(s, o);
} else {
old = attributes.remove(s);
}
}
if (old != null && old instanceof HttpSessionBindingListener) {
HttpSessionBindingListener l = (HttpSessionBindingListener) old;
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s);
l.valueUnbound(e);
}
if (attr_listener == null) {
return;
}
if (o == null) {
if (old != null) {
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s, old);
attr_listener.attributeRemoved(e);
}
return;
}
if (old != null) {
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s, old);
attr_listener.attributeReplaced(e);
} else {
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s, o);
attr_listener.attributeAdded(e);
}
}
@Deprecated
@Override
public void putValue(String s, Object o)
{
setAttribute(s,o);
}
@Override
public void removeAttribute(String s)
{
Object o;
synchronized (attributes) {
o = attributes.remove(s);
}
if (o != null && o instanceof HttpSessionBindingListener) {
HttpSessionBindingListener l = (HttpSessionBindingListener) o;
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s);
l.valueUnbound(e);
}
if (attr_listener == null || o == null) {
return;
}
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, s, o);
attr_listener.attributeRemoved(e);
}
@Deprecated
@Override
public void removeValue(String s)
{
removeAttribute(s);
}
@Override
public void invalidate()
{
context.invalidateSession(this);
unboundAttributes();
}
private void unboundAttributes()
{
for (Map.Entry<String, Object> a : attributes.entrySet()) {
Object o = a.getValue();
if (o != null && o instanceof HttpSessionBindingListener) {
HttpSessionBindingListener l = (HttpSessionBindingListener) o;
HttpSessionBindingEvent e = new HttpSessionBindingEvent(this, a.getKey());
l.valueUnbound(e);
}
}
attributes.clear();
}
@Override
public boolean isNew()
{
return is_new;
}
public void accessed() {
synchronized (this) {
is_new = false;
last_access_time = access_time;
access_time = new Date().getTime();
}
}
public boolean checkTimeOut()
{
return (max_inactive_interval > 0) &&
(access_time - last_access_time > max_inactive_interval * 1000);
}
}
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