org.glassfish.jersey.client.JerseyClient Maven / Gradle / Ivy
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package org.glassfish.jersey.client;
import java.net.URI;
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.ws.rs.core.Configurable;
import javax.ws.rs.core.Link;
import javax.ws.rs.core.UriBuilder;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
/**
* Jersey implementation of {@link javax.ws.rs.client.Client JAX-RS JerseyClient}
* contract.
*
* @author Marek Potociar (marek.potociar at oracle.com)
*/
public class JerseyClient implements javax.ws.rs.client.Client {
private final AtomicBoolean closedFlag = new AtomicBoolean(false);
private final ClientConfig configuration;
private final LinkedBlockingDeque listeners = new LinkedBlockingDeque();
/**
* Client life-cycle event listener contract.
*/
static interface LifecycleListener {
/**
* Invoked when the client is closed.
*/
public void onClose();
}
/**
* Create a new Jersey client instance using a default configuration.
*/
protected JerseyClient() {
this.configuration = new ClientConfig(this);
}
/**
* Create a new Jersey client instance.
*
* @param configuration jersey client configuration.
*/
protected JerseyClient(final Configurable configuration) {
this.configuration = new ClientConfig(this, configuration);
}
@Override
public void close() {
if (closedFlag.compareAndSet(false, true)) {
release();
}
}
private void release() {
LifecycleListener listener;
while ((listener = listeners.pollFirst()) != null) {
listener.onClose();
}
}
/**
* Add a new client lifecycle listener.
*
* @param listener client lifecycle listener.
*/
public void addListener(LifecycleListener listener) {
checkNotClosed();
listeners.push(listener);
}
/**
* Check client state.
*
* @return {@code true} if current {@link JerseyClient} instance is closed, otherwise {@code false}.
* @see #close()
*/
public boolean isClosed() {
return closedFlag.get();
}
/**
* Check that the client instance has not been closed.
*
* @throws IllegalStateException in case the client instance has been closed already.
*/
void checkNotClosed() throws IllegalStateException {
checkState(!closedFlag.get(), "Client instance has been closed.");
}
@Override
public ClientConfig configuration() {
checkNotClosed();
return configuration;
}
@Override
public JerseyWebTarget target(String uri) throws IllegalArgumentException, NullPointerException {
checkNotClosed();
checkNotNull(uri, "URI template of the newly created target must not be 'null'.");
return new JerseyWebTarget(uri, this);
}
@Override
public JerseyWebTarget target(URI uri) throws NullPointerException {
checkNotClosed();
checkNotNull(uri, "URI of the newly created target must not be 'null'.");
return new JerseyWebTarget(uri, this);
}
@Override
public JerseyWebTarget target(UriBuilder uriBuilder) throws NullPointerException {
checkNotClosed();
checkNotNull(uriBuilder, "URI builder of the newly created target must not be 'null'.");
return new JerseyWebTarget(uriBuilder, this);
}
@Override
public JerseyWebTarget target(Link link) throws NullPointerException {
checkNotClosed();
checkNotNull(link, "Link to the newly created target must not be 'null'.");
return new JerseyWebTarget(link, this);
}
@Override
public JerseyInvocation.Builder invocation(Link link) throws NullPointerException, IllegalArgumentException {
checkNotClosed();
checkNotNull(link, "Link of the newly created invocation must not be 'null'.");
JerseyWebTarget t = new JerseyWebTarget(link, this);
final String acceptType = link.getType();
return (acceptType != null) ? t.request(acceptType) : t.request();
}
}