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/*-
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 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=========================================================
*/
package org.onap.dcae.restapi.endpoints;
import com.att.nsa.apiServer.endpoints.NsaBaseEndpoint;
import com.att.nsa.clock.SaClock;
import com.att.nsa.drumlin.service.framework.context.DrumlinRequestContext;
import com.att.nsa.drumlin.service.standards.HttpStatusCodes;
import com.att.nsa.drumlin.service.standards.MimeTypes;
import com.att.nsa.logging.LoggingContext;
import com.att.nsa.logging.log4j.EcompFields;
import com.att.nsa.security.db.simple.NsaSimpleApiKey;
import com.google.gson.JsonParser;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;
import org.onap.dcae.commonFunction.CommonStartup;
import org.onap.dcae.commonFunction.CommonStartup.QueueFullException;
import org.onap.dcae.commonFunction.CustomExceptionLoader;
import org.onap.dcae.commonFunction.VESLogger;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.Base64;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class EventReceipt extends NsaBaseEndpoint {
private static final Logger log = LoggerFactory.getLogger(EventReceipt.class);
private static final String MESSAGE = " Message:";
static String valresult;
static JSONObject customerror;
public static void receiveVESEvent(DrumlinRequestContext ctx) {
// the request body carries events. assume for now it's an array
// of json objects that fits in memory. (See cambria's parsing for
// handling large messages)
NsaSimpleApiKey retkey = null;
JSONObject jsonObject;
FileReader fr = null;
InputStream istr = null;
int arrayFlag = 0;
String vesVersion = null;
String userId=null;
try {
istr = ctx.request().getBodyStream();
jsonObject = new JSONObject(new JSONTokener(istr));
log.info("ctx getPathInContext: " + ctx.request().getPathInContext());
Pattern p = Pattern.compile("(v\\d+)");
Matcher m = p.matcher(ctx.request().getPathInContext());
if (m.find()) {
log.info("VES version:" + m.group());
vesVersion = m.group();
m = null;
p = null;
}
final UUID uuid = UUID.randomUUID();
LoggingContext localLC = VESLogger.getLoggingContextForThread(uuid);
localLC.put(EcompFields.kBeginTimestampMs, SaClock.now());
if (ctx.request().getPathInContext().contains("eventBatch")) {
CommonStartup.inlog.info(ctx.request().getRemoteAddress() + "VESUniqueID-Prefix:" + uuid
+ " VES Batch Input Messsage: " + jsonObject);
log.info(ctx.request().getRemoteAddress() + "VESUniqueID-Prefix:" + uuid + " VES Batch Input Messsage: "
+ jsonObject);
arrayFlag = 1;
} else {
CommonStartup.inlog.info(
ctx.request().getRemoteAddress() + "VESUniqueID:" + uuid + " Input Messsage: " + jsonObject);
log.info(ctx.request().getRemoteAddress() + "VESUniqueID:" + uuid + " Input Messsage: " + jsonObject);
}
try {
if (CommonStartup.authflag == 1) {
userId = getUser (ctx);
retkey = NsaBaseEndpoint.getAuthenticatedUser(ctx);
}
} catch (NullPointerException x) {
//log.info("Invalid user request :" + userId + " FROM " + ctx.request().getRemoteAddress() + " " + ctx.request().getContentType() + MESSAGE + jsonObject);
log.info(String.format("Unauthorized request %s FROM %s %s %s %s", getUser(ctx), ctx.request().getRemoteAddress(), ctx.request().getContentType(), MESSAGE, jsonObject));
CommonStartup.eplog.info("EVENT_RECEIPT_FAILURE: Unauthorized user" + userId + x);
respondWithCustomMsginJson(ctx, HttpStatusCodes.k401_unauthorized, "Invalid user");
return;
}
Boolean ErrorStatus = false;
ErrorStatus = schemaCheck( retkey, arrayFlag, jsonObject, vesVersion, ctx, uuid);
if (ErrorStatus)
{
return;
}
} catch (JSONException | NullPointerException | IOException x) {
log.error(String.format("Couldn't parse JSON Array - HttpStatusCodes.k400_badRequest%d%s%s",
HttpStatusCodes.k400_badRequest, MESSAGE, x.getMessage()));
CommonStartup.eplog.info("EVENT_RECEIPT_FAILURE: Invalid user request " + x);
respondWithCustomMsginJson(ctx, HttpStatusCodes.k400_badRequest, "Couldn't parse JSON object");
return;
} catch (QueueFullException e) {
log.error("Collector internal queue full :" + e.getMessage(), e);
CommonStartup.eplog.info("EVENT_RECEIPT_FAILURE: QueueFull" + e);
respondWithCustomMsginJson(ctx, HttpStatusCodes.k503_serviceUnavailable, "Queue full");
return;
} finally {
if (fr != null) {
safeClose(fr);
}
if (istr != null) {
safeClose(istr);
}
}
log.info("MessageAccepted and k200_ok to be sent");
ctx.response().sendErrorAndBody(HttpStatusCodes.k200_ok, "Message Accepted", MimeTypes.kAppJson);
}
public static String getUser( DrumlinRequestContext ctx){
String authorization = null;
authorization = ctx.request().getFirstHeader("Authorization");
if (authorization != null && authorization.startsWith("Basic")) {
// Authorization: Basic base64credentials
String base64Credentials = authorization.substring("Basic".length()).trim();
String credentials = new String(Base64.getDecoder().decode(base64Credentials),
Charset.forName("UTF-8"));
// credentials = username:password
final String[] values = credentials.split(":",2);
log.debug("User:" + values[0].toString() + " Pwd:" + values[1].toString());
return values[0].toString();
}
return null;
}
public static Boolean schemaCheck(NsaSimpleApiKey retkey, int arrayFlag,JSONObject jsonObject, String vesVersion, DrumlinRequestContext ctx, UUID uuid) throws JSONException, QueueFullException, IOException
{
JSONArray jsonArray;
JSONArray jsonArrayMod = new JSONArray();
JSONObject event;
Boolean ErrorStatus=false;
FileReader fr;
if (retkey != null || CommonStartup.authflag == 0) {
if (CommonStartup.schemaValidatorflag > 0) {
if ((arrayFlag == 1) && (jsonObject.has("eventList") && (!jsonObject.has("event")))
|| ((arrayFlag == 0) && (!jsonObject.has("eventList") && (jsonObject.has("event"))))) {
fr = new FileReader(schemaFileVersion(vesVersion));
String schema = new JsonParser().parse(fr).toString();
valresult = CommonStartup.schemavalidate(jsonObject.toString(), schema);
if (valresult.equals("true")) {
log.info("Validation successful");
} else if (valresult.equals("false")) {
log.info("Validation failed");
respondWithCustomMsginJson(ctx, HttpStatusCodes.k400_badRequest,
"Schema validation failed");
ErrorStatus=true;
return ErrorStatus;
} else {
log.error("Validation errored" + valresult);
respondWithCustomMsginJson(ctx, HttpStatusCodes.k400_badRequest,
"Couldn't parse JSON object");
ErrorStatus=true;
return ErrorStatus;
}
} else {
log.info("Validation failed");
respondWithCustomMsginJson(ctx, HttpStatusCodes.k400_badRequest, "Schema validation failed");
ErrorStatus=true;
return ErrorStatus;
}
if (arrayFlag == 1) {
jsonArray = jsonObject.getJSONArray("eventList");
log.info("Validation successful for all events in batch");
for (int i = 0; i < jsonArray.length(); i++) {
event = new JSONObject().put("event", jsonArray.getJSONObject(i));
event.put("VESuniqueId", uuid + "-" + i);
event.put("VESversion", vesVersion);
jsonArrayMod.put(event);
}
log.info("Modified jsonarray:" + jsonArrayMod.toString());
} else {
jsonObject.put("VESuniqueId", uuid);
jsonObject.put("VESversion", vesVersion);
jsonArrayMod = new JSONArray().put(jsonObject);
}
}
// reject anything that's not JSON
if (!ctx.request().getContentType().equalsIgnoreCase("application/json")) {
log.info(String.format("Rejecting request with content type %s Message:%s",
ctx.request().getContentType(), jsonObject));
respondWithCustomMsginJson(ctx, HttpStatusCodes.k400_badRequest,
"Incorrect message content-type; only accepts application/json messages");
ErrorStatus=true;
return ErrorStatus;
}
CommonStartup.handleEvents(jsonArrayMod);
} else {
log.info(String.format("Unauthorized request %s FROM %s %s %s %s", getUser(ctx), ctx.request().getRemoteAddress(), ctx.request().getContentType(), MESSAGE,
jsonObject));
respondWithCustomMsginJson(ctx, HttpStatusCodes.k401_unauthorized, "Unauthorized user");
ErrorStatus=true;
return ErrorStatus;
}
return ErrorStatus;
}
public static void respondWithCustomMsginJson(DrumlinRequestContext ctx, int sc, String msg) {
String[] str;
String exceptionType = "GeneralException";
str = CustomExceptionLoader.LookupMap(String.valueOf(sc), msg);
log.info("Post CustomExceptionLoader.LookupMap" + str);
if (str != null) {
if (str[0].matches("SVC")) {
exceptionType = "ServiceException";
} else if (str[1].matches("POL")) {
exceptionType = "PolicyException";
}
JSONObject jb = new JSONObject().put("requestError",
new JSONObject().put(exceptionType, new JSONObject().put("MessagID", str[0]).put("text", str[1])));
log.debug("Constructed json error : " + jb);
ctx.response().sendErrorAndBody(sc, jb.toString(), MimeTypes.kAppJson);
} else {
JSONObject jb = new JSONObject().put("requestError",
new JSONObject().put(exceptionType, new JSONObject().put("Status", sc).put("Error", msg)));
ctx.response().sendErrorAndBody(sc, jb.toString(), MimeTypes.kAppJson);
}
}
public static void safeClose(FileReader fr) {
if (fr != null) {
try {
fr.close();
} catch (IOException e) {
log.error("Error closing file reader stream : " + e);
}
}
}
public static void safeClose(InputStream is) {
if (is != null) {
try {
is.close();
} catch (IOException e) {
log.error("Error closing Input stream : " + e);
}
}
}
public static String schemaFileVersion(String version) {
String filename = null;
if (CommonStartup.schemaFileJson.has(version)) {
filename = CommonStartup.schemaFileJson.getString(version);
} else {
filename = CommonStartup.schemaFileJson.getString("v5");
}
log.info(String.format("VESversion: %s Schema File:%s", version, filename));
return filename;
}
}
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