package org.apache.http.impl.nio.reactor;
import java.io.IOException;
import org.apache.http.nio.reactor.IOEventDispatch;
import org.apache.http.nio.reactor.IOSession;
import org.apache.http.nio.reactor.ssl.SSLIOSession;
import org.apache.http.util.Asserts;
public abstract class AbstractIODispatch<T> implements IOEventDispatch {
protected abstract T createConnection(IOSession session);
protected abstract void onConnected(T conn);
protected abstract void onClosed(T conn);
protected abstract void onException(T conn, IOException ex);
protected abstract void onInputReady(T conn);
protected abstract void onOutputReady(T conn);
protected abstract void onTimeout(T conn);
private void ensureNotNull(final T conn) {
Asserts.notNull(conn, "HTTP connection");
}
@Override
public void connected(final IOSession session) {
@SuppressWarnings("unchecked")
T conn = (T) session.getAttribute(IOEventDispatch.CONNECTION_KEY);
try {
if (conn == null) {
conn = createConnection(session);
session.setAttribute(IOEventDispatch.CONNECTION_KEY, conn);
}
onConnected(conn);
final SSLIOSession sslioSession = (SSLIOSession) session.getAttribute(
SSLIOSession.SESSION_KEY);
if (sslioSession != null) {
try {
synchronized (sslioSession) {
if (!sslioSession.isInitialized()) {
sslioSession.initialize();
}
}
} catch (final IOException ex) {
onException(conn, ex);
sslioSession.shutdown();
}
}
} catch (final RuntimeException ex) {
session.shutdown();
throw ex;
}
}
@Override
public void disconnected(final IOSession session) {
@SuppressWarnings("unchecked")
final
T conn = (T) session.getAttribute(IOEventDispatch.CONNECTION_KEY);
if (conn != null) {
onClosed(conn);
}
}
@Override
public void inputReady(final IOSession session) {
@SuppressWarnings("unchecked")
final
T conn = (T) session.getAttribute(IOEventDispatch.CONNECTION_KEY);
try {
ensureNotNull(conn);
final SSLIOSession sslioSession = (SSLIOSession) session.getAttribute(
SSLIOSession.SESSION_KEY);
if (sslioSession == null) {
onInputReady(conn);
} else {
try {
if (!sslioSession.isInitialized()) {
sslioSession.initialize();
}
if (sslioSession.isAppInputReady()) {
onInputReady(conn);
}
sslioSession.inboundTransport();
} catch (final IOException ex) {
onException(conn, ex);
sslioSession.shutdown();
}
}
} catch (final RuntimeException ex) {
session.shutdown();
throw ex;
}
}
@Override
public void outputReady(final IOSession session) {
@SuppressWarnings("unchecked")
final
T conn = (T) session.getAttribute(IOEventDispatch.CONNECTION_KEY);
try {
ensureNotNull(conn);
final SSLIOSession sslioSession = (SSLIOSession) session.getAttribute(
SSLIOSession.SESSION_KEY);
if (sslioSession == null) {
onOutputReady(conn);
} else {
try {
if (!sslioSession.isInitialized()) {
sslioSession.initialize();
}
if (sslioSession.isAppOutputReady()) {
onOutputReady(conn);
}
sslioSession.outboundTransport();
} catch (final IOException ex) {
onException(conn, ex);
sslioSession.shutdown();
}
}
} catch (final RuntimeException ex) {
session.shutdown();
throw ex;
}
}
@Override
public void timeout(final IOSession session) {
@SuppressWarnings("unchecked")
final
T conn = (T) session.getAttribute(IOEventDispatch.CONNECTION_KEY);
try {
final SSLIOSession sslioSession = (SSLIOSession) session.getAttribute(
SSLIOSession.SESSION_KEY);
ensureNotNull(conn);
onTimeout(conn);
if (sslioSession != null) {
synchronized (sslioSession) {
if (sslioSession.isOutboundDone() && !sslioSession.isInboundDone()) {
sslioSession.shutdown();
}
}
}
} catch (final RuntimeException ex) {
session.shutdown();
throw ex;
}
}
}