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package org.glassfish.jersey.client;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.List;
import java.util.Optional;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
/**
* Client request filter, which doesn't perform actual requests.
*
* Sets the response based on various request properties:
* <ul>
* <li>Response code is value of request header {@code "Response-Status"} or {@code 200}, if not present.</li>
* <li>Response entity is request entity or {@code "NO-ENTITY"}, if request entity is not present.</li>
* <li>Response headers do contain all request headers, names are prefixed by {@code "Test-Header-"}.</li>
* <li>Response headers do contain all request properties, names are prefixed by {@code "Test-Property-"}.</li>
* </ul>
*
* Additionally, response headers contain {@code "Test-Thread"} (current thread name), {@code "Test-Uri"} (request Uri)
* and {@code "Test-Method"} (request Http method).
*
* @author Michal Gajdos
*/
class TerminalClientRequestFilter implements ClientRequestFilter {
@Override
public void filter(final ClientRequestContext requestContext) throws IOException {
// Obtain entity - from request or create new.
final ByteArrayInputStream entity = new ByteArrayInputStream(
requestContext.hasEntity() ? requestContext.getEntity().toString().getBytes() : "NO-ENTITY".getBytes()
);
final int responseStatus = Optional.ofNullable(requestContext.getHeaders().getFirst("Response-Status"))
.map(Integer.class::cast)
.orElse(200);
Response.ResponseBuilder response = Response.status(responseStatus)
.entity(entity)
.type("text/plain")
// Test properties.
.header("Test-Thread", Thread.currentThread().getName())
.header("Test-Uri", requestContext.getUri().toString())
.header("Test-Method", requestContext.getMethod());
// Request headers -> Response headers (<header> -> Test-Header-<header>)
for (final MultivaluedMap.Entry<String, List<String>> entry : requestContext.getStringHeaders().entrySet()) {
response = response.header("Test-Header-" + entry.getKey(), entry.getValue());
}
// Request properties -> Response headers (<header> -> Test-Property-<header>)
for (final String property : requestContext.getPropertyNames()) {
response = response.header("Test-Property-" + property, requestContext.getProperty(property));
}
requestContext.abortWith(response.build());
}
}