/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.keycloak.example.oauth;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.jboss.logging.Logger;
import org.keycloak.KeycloakSecurityContext;
import org.keycloak.common.util.UriUtils;
import org.keycloak.servlet.ServletOAuthClient;
import org.keycloak.util.JsonSerialization;
import javax.enterprise.context.ApplicationScoped;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.inject.Inject;
import javax.inject.Named;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @author <a href="mailto:mposolda@redhat.com">Marek Posolda</a>
* @version $Revision: 1 $
*/
@ApplicationScoped
@Named("databaseClient")
public class DatabaseClient {
@Inject
@ServletRequestQualifier
private HttpServletRequest request;
@Inject
private HttpServletResponse response;
@Inject
private FacesContext facesContext;
@Inject
private ServletOAuthClient oauthClient;
@Inject
private UserData userData;
private static final Logger logger = Logger.getLogger(DatabaseClient.class);
public void retrieveAccessToken() {
try {
oauthClient.redirectRelative("client.jsf", request, response);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
static class TypedList extends ArrayList<String> {}
public void sendCustomersRequest() {
List<String> customers = sendRequestToDBApplication(getBaseUrl() + "/database/customers");
userData.setCustomers(customers);
}
public void sendProductsRequest() {
List<String> products = sendRequestToDBApplication(getBaseUrl() + "/database/products");
userData.setProducts(products);
}
protected List<String> sendRequestToDBApplication(String dbUri) {
HttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet(dbUri);
try {
if (userData.isHasAccessToken()) {
get.addHeader("Authorization", "Bearer " + userData.getAccessToken());
}
HttpResponse response = client.execute(get);
switch (response.getStatusLine().getStatusCode()) {
case 200: HttpEntity entity = response.getEntity();
InputStream is = entity.getContent();
try {
return JsonSerialization.readValue(is, TypedList.class);
} finally {
is.close();
}
case 401: facesContext.addMessage(null, new FacesMessage("Status: 401. Request not authenticated! You need to retrieve access token first."));
break;
case 403: facesContext.addMessage(null, new FacesMessage("Status: 403. Access token has insufficient privileges"));
break;
default: facesContext.addMessage(null, new FacesMessage("Status: " + response.getStatusLine() + ". Not able to retrieve data. See log for details"));
logger.warn("Error occured. Status: " + response.getStatusLine());
}
return null;
} catch (IOException e) {
e.printStackTrace();
facesContext.addMessage(null, new FacesMessage("Unknown error. See log for details"));
return null;
}
}
public String getBaseUrl() {
KeycloakSecurityContext session = (KeycloakSecurityContext)request.getAttribute(KeycloakSecurityContext.class.getName());
return UriUtils.getOrigin(request.getRequestURL().toString());
}
}