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/*-
* ============LICENSE_START=======================================================
* ONAP-PAP-REST
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pap.xacml.rest.components;
import com.att.research.xacml.util.XACMLProperties;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Base64;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.rest.XACMLRestProperties;
import org.onap.policy.rest.jpa.PolicyDBDaoEntity;
import org.onap.policy.utils.PeCryptoUtils;
public class NotifyOtherPaps {
private static final Logger LOGGER = FlexLogger.getLogger(NotifyOtherPaps.class);
private List<PolicyDBDaoEntity> failedPaps = null;
public void notifyOthers(long entityId, String entityType) {
notifyOthers(entityId, entityType, null);
}
/**
* Notify others.
*
* @param entityId the entity id
* @param entityType the entity type
* @param newGroupId the new group id
*/
public void notifyOthers(long entityId, String entityType, String newGroupId) {
LOGGER.debug("notifyOthers(long entityId, String entityType, long newGroupId) as notifyOthers(" + entityId + ","
+ entityType + "," + newGroupId + ") called");
failedPaps = new ArrayList<>();
List<?> otherServers = PolicyDBDao.getPolicyDBDaoInstance().getOtherServers();
// Notify other paps
startNotifyThreads(otherServers, entityId, entityType, newGroupId);
// Retry for failed paps
if (!failedPaps.isEmpty()) {
startNotifyThreads(failedPaps, entityId, entityType, newGroupId);
}
}
private void startNotifyThreads(List<?> otherServers, long entityId, String entityType, String newGroupId) {
LinkedList<Thread> notifyThreads = new LinkedList<>();
// we're going to run notifications in parallel threads to speed things
// up
for (Object obj : otherServers) {
Thread newNotifyThread = new Thread(new NotifyOtherThread(obj, entityId, entityType, newGroupId));
newNotifyThread.start();
notifyThreads.add(newNotifyThread);
}
// we want to wait for all notifications to complete or timeout before
// we unlock the interface and allow more changes
for (Thread t : notifyThreads) {
try {
t.join();
} catch (Exception e) {
LOGGER.warn("Could not join a notifcation thread" + e);
}
}
}
private class NotifyOtherThread implements Runnable {
public NotifyOtherThread(Object obj, long entityId, String entityType, String newGroupId) {
this.obj = obj;
this.entityId = entityId;
this.entityType = entityType;
this.newGroupId = newGroupId;
}
private Object obj;
private long entityId;
private String entityType;
private String newGroupId;
@Override
public void run() {
PolicyDBDao dao = new PolicyDBDao();
PolicyDBDaoEntity dbdEntity = (PolicyDBDaoEntity) obj;
String otherPap = dbdEntity.getPolicyDBDaoUrl();
String username = dbdEntity.getUsername();
String txt;
try {
txt = PeCryptoUtils.decrypt(dbdEntity.getPassword());
} catch (Exception e) {
LOGGER.debug(e);
// if we can't decrypt, might as well try it anyway
txt = dbdEntity.getPassword();
}
HttpURLConnection connection = null;
UUID requestId = UUID.randomUUID();
URL url;
String papUrl;
try {
String[] papUrlUserPass = dao.getPapUrlUserPass();
if (papUrlUserPass == null) {
papUrl = "undefined";
} else {
papUrl = papUrlUserPass[0];
}
LOGGER.debug("We are going to try to notify " + otherPap);
// is this our own url?
String ourUrl = otherPap;
try {
ourUrl = dao.splitPapUrlUserPass(otherPap)[0];
} catch (Exception e) {
ourUrl = otherPap;
LOGGER.debug(e);
}
if (otherPap == null) {
otherPap = "undefined";
}
if (papUrl.equals(ourUrl)) {
LOGGER.debug(otherPap + " is our url, skipping notify");
return;
}
if (newGroupId == null) {
url = new URL(otherPap + "?policydbdaourl=" + papUrl + "&entityid=" + entityId + "&entitytype="
+ entityType);
} else {
url = new URL(otherPap + "?policydbdaourl=" + papUrl + "&entityid=" + entityId + "&entitytype="
+ entityType + "&extradata=" + newGroupId);
}
} catch (MalformedURLException e) {
LOGGER.warn("Caught MalformedURLException on: new URL()", e);
return;
}
//
// Open up the connection
//
LOGGER.info("PolicyDBDao: NotifyOtherThread: notifying other PAPs of an update");
LOGGER.info("Connecting with url: " + url);
try {
connection = (HttpURLConnection) url.openConnection();
} catch (Exception e) {
LOGGER.warn("Caught exception on: url.openConnection()", e);
return;
}
//
// Setup our method and headers
//
try {
connection.setRequestMethod("PUT");
} catch (ProtocolException e) {
// why would this error ever occur?
LOGGER.warn("Caught ProtocolException on connection.setRequestMethod(\"PUT\");", e);
return;
}
Base64.Encoder encoder = Base64.getEncoder();
String encoding = encoder.encodeToString((username + ":" + txt).getBytes(StandardCharsets.UTF_8));
connection.setRequestProperty("Authorization", "Basic " + encoding);
connection.setRequestProperty("Accept", "text/x-java-properties");
connection.setRequestProperty("Content-Type", "text/x-java-properties");
connection.setRequestProperty("requestID", requestId.toString());
int readTimeout;
try {
readTimeout =
Integer.parseInt(XACMLProperties.getProperty(XACMLRestProperties.PROP_PAP_NOTIFY_TIMEOUT));
} catch (Exception e) {
LOGGER.error("xacml.rest.pap.notify.timeoutms property not set, using a default.", e);
readTimeout = 10000;
}
connection.setReadTimeout(readTimeout);
connection.setConnectTimeout(readTimeout);
connection.setUseCaches(false);
//
// Adding this in. It seems the HttpUrlConnection class does NOT
// properly forward our headers for POST re-direction. It does so
// for a GET re-direction.
//
// So we need to handle this ourselves.
//
connection.setInstanceFollowRedirects(false);
connection.setDoOutput(true);
connection.setDoInput(true);
try {
connection.connect();
} catch (Exception e) {
LOGGER.warn("Caught exception on: connection.connect()", e);
return;
}
try {
if (connection.getResponseCode() == 200) {
LOGGER.info("PolicyDBDao: NotifyOtherThread received response 200 from pap server on notify");
} else {
LOGGER.warn("PolicyDBDao: NotifyOtherThread connection response code not 200, received: "
+ connection.getResponseCode());
failedPaps.add(dbdEntity);
}
} catch (Exception e) {
LOGGER.warn("Caught Exception on: connection.getResponseCode() ", e);
}
connection.disconnect();
}
}
}
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