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/*******************************************************************************
* ============LICENSE_START==================================================
* * org.onap.dmaap
* * ===========================================================================
* * Copyright © 2017 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====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.dmaap.datarouter.provisioning;
import static org.onap.dmaap.datarouter.provisioning.utils.HttpServletUtils.sendResponseError;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InvalidObjectException;
import org.json.JSONException;
import org.json.JSONObject;
import org.onap.dmaap.datarouter.authz.AuthorizationResponse;
import org.onap.dmaap.datarouter.provisioning.beans.EventLogRecord;
import org.onap.dmaap.datarouter.provisioning.beans.Feed;
import org.onap.dmaap.datarouter.provisioning.eelf.EelfMsgs;
/**
* This servlet handles provisioning for the <feedURL> which is generated by the provisioning
* server to handle a particular feed. It supports DELETE to mark the feed as deleted,
* and GET to retrieve information about the feed, and PUT to modify the feed.
*
* @author Robert Eby
* @version $Id$
*/
@SuppressWarnings("serial")
public class FeedServlet extends ProxyServlet {
private static final EELFLogger eelfLogger = EELFManager.getInstance().getLogger(FeedServlet.class);
/**
* Delete the Feed at the address /feed/<feednumber>.
* See the <i>Deleting a Feed</i> section in the <b>Provisioning API</b>
* document for details on how this method should be invoked.
*/
@Override
public void doDelete(HttpServletRequest req, HttpServletResponse resp) {
setIpFqdnRequestIDandInvocationIDForEelf("doDelete", req);
eelfLogger.info(EelfMsgs.ENTRY);
try {
eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,
req.getHeader(BEHALF_HEADER),getIdFromPath(req) + "");
EventLogRecord elr = new EventLogRecord(req);
String message = isAuthorizedForProvisioning(req);
if (message != null) {
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
if (isProxyServer()) {
super.doDelete(req, resp);
return;
}
String bhdr = req.getHeader(BEHALF_HEADER);
if (bhdr == null) {
message = MISSING_ON_BEHALF;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
int feedid = getIdFromPath(req);
if (feedid < 0) {
message = MISSING_FEED;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
Feed feed = Feed.getFeedById(feedid);
if (feed == null || feed.isDeleted()) {
message = MISSING_FEED;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_NOT_FOUND);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, message, eventlogger);
return;
}
/*
* START - AAF changes
* TDP EPIC US# 307413
* CADI code - check on permissions based on Legacy/AAF users to allow to delete/remove feed
*/
String aafInstance = feed.getAafInstance();
if (aafInstance == null || "".equals(aafInstance) || "legacy".equalsIgnoreCase(aafInstance)) {
AuthorizationResponse aresp = authz.decide(req);
if (! aresp.isAuthorized()) {
message = POLICY_ENGINE;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
} else {
String permission = getFeedPermission(aafInstance, BaseServlet.DELETE_PERMISSION);
eventlogger.info("FeedServlet.doDelete().. Permission String - " + permission);
if (!req.isUserInRole(permission)) {
message = "AAF disallows access to permission - " + permission;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
}
/*
* END - AAF changes
*/
// Delete FEED table entry (set DELETED flag)
feed.setDeleted(true);
if (doUpdate(feed)) {
activeFeeds--;
// send response
elr.setResult(HttpServletResponse.SC_NO_CONTENT);
eventlogger.info(elr.toString());
resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
provisioningDataChanged();
} else {
// Something went wrong with the UPDATE
elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG, eventlogger);
}
} finally {
eelfLogger.info(EelfMsgs.EXIT);
}
}
/**
* Get information on the feed at the address /feed/<feednumber>.
* See the <i>Retrieving Information about a Feed</i> section in the <b>Provisioning API</b>
* document for details on how this method should be invoked.
*/
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) {
setIpFqdnRequestIDandInvocationIDForEelf("doGet", req);
eelfLogger.info(EelfMsgs.ENTRY);
try {
eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,
req.getHeader(BEHALF_HEADER),getIdFromPath(req) + "");
EventLogRecord elr = new EventLogRecord(req);
String message = isAuthorizedForProvisioning(req);
if (message != null) {
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
if (isProxyServer()) {
super.doGet(req, resp);
return;
}
String bhdr = req.getHeader(BEHALF_HEADER);
if (bhdr == null) {
message = MISSING_ON_BEHALF;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
int feedid = getIdFromPath(req);
if (feedid < 0) {
message = MISSING_FEED;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
Feed feed = Feed.getFeedById(feedid);
if (feed == null || feed.isDeleted()) {
message = MISSING_FEED;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_NOT_FOUND);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, message, eventlogger);
return;
}
// Check with the Authorizer
AuthorizationResponse aresp = authz.decide(req);
if (! aresp.isAuthorized()) {
message = POLICY_ENGINE;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
// send response
elr.setResult(HttpServletResponse.SC_OK);
eventlogger.info(elr.toString());
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType(FEEDFULL_CONTENT_TYPE);
try {
resp.getOutputStream().print(feed.asJSONObject(true).toString());
} catch (IOException ioe) {
eventlogger.error("PROV0101 FeedServlet.doGet: " + ioe.getMessage(), ioe);
}
} finally {
eelfLogger.info(EelfMsgs.EXIT);
}
}
/**
* PUT on the <feedURL> for a feed.
* See the <i>Modifying a Feed</i> section in the <b>Provisioning API</b>
* document for details on how this method should be invoked.
*/
@Override
public void doPut(HttpServletRequest req, HttpServletResponse resp) {
setIpFqdnRequestIDandInvocationIDForEelf("doPut", req);
eelfLogger.info(EelfMsgs.ENTRY);
try {
eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,
req.getHeader(BEHALF_HEADER),getIdFromPath(req) + "");
EventLogRecord elr = new EventLogRecord(req);
String message = isAuthorizedForProvisioning(req);
if (message != null) {
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
if (isProxyServer()) {
super.doPut(req, resp);
return;
}
String bhdr = req.getHeader(BEHALF_HEADER);
if (bhdr == null) {
message = MISSING_ON_BEHALF;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
int feedid = getIdFromPath(req);
if (feedid < 0) {
message = MISSING_FEED;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
Feed oldFeed = Feed.getFeedById(feedid);
if (oldFeed == null || oldFeed.isDeleted()) {
message = MISSING_FEED;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_NOT_FOUND);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, message, eventlogger);
return;
}
// check content type is FEED_CONTENT_TYPE, version 1.0
ContentHeader ch = getContentHeader(req);
String ver = ch.getAttribute("version");
if (!ch.getType().equals(FEED_BASECONTENT_TYPE) || !("1.0".equals(ver) || "2.0".equals(ver))) {
message = "Incorrect content-type";
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE, message, eventlogger);
return;
}
JSONObject jo = getJSONfromInput(req);
if (jo == null) {
message = BAD_JSON;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
Feed feed;
try {
feed = new Feed(jo);
} catch (InvalidObjectException e) {
message = e.getMessage();
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString(), e);
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
feed.setFeedid(feedid);
feed.setPublisher(bhdr); // set from X-DMAAP-DR-ON-BEHALF-OF header
//Adding for group feature:Rally US708115
String subjectgroup = (req.getHeader("X-DMAAP-DR-ON-BEHALF-OF-GROUP"));
if (!oldFeed.getPublisher().equals(feed.getPublisher()) && subjectgroup == null) {
message = "This feed must be modified by the same publisher that created it.";
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
if (!oldFeed.getName().equals(feed.getName())) {
message = "The name of the feed may not be updated.";
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
// US DSCDR-19 for DCAE if version is not null, version can't be changed
if ((oldFeed.getVersion() != null) && (feed.getVersion() != null)
&& !oldFeed.getVersion().equals(feed.getVersion())) {
message = "The version of the feed may not be updated.";
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_BAD_REQUEST, message, eventlogger);
return;
}
/*
* START - AAF changes
* TDP EPIC US# 307413
* CADI code - check on permissions based on Legacy/AAF users to allow feed edit/update/modify
*/
String aafInstance = feed.getAafInstance();
if (aafInstance == null || "".equals(aafInstance) || "legacy".equalsIgnoreCase(aafInstance)) {
// Check with the Authorizer
AuthorizationResponse aresp = authz.decide(req);
if (!aresp.isAuthorized()) {
message = POLICY_ENGINE;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
} else {
String permission = getFeedPermission(aafInstance, BaseServlet.EDIT_PERMISSION);
eventlogger.info("FeedServlet.doPut().. Permission String - " + permission);
if (!req.isUserInRole(permission)) {
message = "AAF disallows access to permission - " + permission;
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_FORBIDDEN);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, message, eventlogger);
return;
}
}
/*
* END - AAF changes
*/
// Update FEEDS table entries
if (doUpdate(feed)) {
// send response
elr.setResult(HttpServletResponse.SC_OK);
eventlogger.info(elr.toString());
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType(FEEDFULL_CONTENT_TYPE);
try {
resp.getOutputStream().print(feed.asLimitedJSONObject().toString());
} catch (IOException ioe) {
eventlogger.error("PROV0102 FeedServlet.doPut: " + ioe.getMessage(), ioe);
}
/**Change Owner ship of Feed //Adding for group feature. :Rally US708115*/
if (jo.has("changeowner") && subjectgroup != null) {
try {
Boolean changeowner = (Boolean) jo.get("changeowner");
if (changeowner != null && changeowner.equals(true)) {
feed.setPublisher(req.getHeader(BEHALF_HEADER));
feed.changeOwnerShip();
}
} catch (JSONException je) {
eventlogger.error("PROV0103 FeedServlet.doPut: " + je.getMessage(), je);
}
}
/***End of change ownership.*/
provisioningDataChanged();
} else {
// Something went wrong with the UPDATE
elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG, eventlogger);
}
} finally {
eelfLogger.info(EelfMsgs.EXIT);
}
}
/**
* POST on the <feedURL> -- not supported.
*/
@Override
public void doPost(HttpServletRequest req, HttpServletResponse resp) {
setIpFqdnRequestIDandInvocationIDForEelf("doPost", req);
eelfLogger.info(EelfMsgs.ENTRY);
try {
eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF, req.getHeader(BEHALF_HEADER));
String message = "POST not allowed for the feedURL.";
EventLogRecord elr = new EventLogRecord(req);
elr.setMessage(message);
elr.setResult(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
eventlogger.error(elr.toString());
sendResponseError(resp, HttpServletResponse.SC_METHOD_NOT_ALLOWED, message, eventlogger);
} finally {
eelfLogger.info(EelfMsgs.EXIT);
}
}
}
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