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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 com.att.nsa.cambria.resources.streamReaders;
import java.io.InputStream;
import java.util.logging.Logger;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;
import com.att.nsa.cambria.CambriaApiException;
import com.att.nsa.cambria.backends.Publisher.message;
import com.att.nsa.cambria.beans.LogDetails;
import com.att.nsa.cambria.resources.CambriaEventSet.reader;
import jline.internal.Log;
/**
*
* @author author
*
*/
public class CambriaJsonStreamReader implements reader {
private static final Logger LOG = Logger.getLogger(CambriaJsonStreamReader.class.toString());
private final JSONTokener fTokens;
private final boolean fIsList;
private long fCount;
private final String fDefPart;
public static final String kKeyField = "cambria.partition";
/**
*
* @param is
* @param defPart
* @throws CambriaApiException
*/
public CambriaJsonStreamReader(InputStream is, String defPart) throws CambriaApiException {
try {
fTokens = new JSONTokener(is);
fCount = 0;
fDefPart = defPart;
final int c = fTokens.next();
if (c == '[') {
fIsList = true;
} else if (c == '{') {
fTokens.back();
fIsList = false;
} else {
throw new CambriaApiException(HttpServletResponse.SC_BAD_REQUEST, "Expecting an array or an object.");
}
} catch (JSONException e) {
Log.error(e);
throw new CambriaApiException(HttpServletResponse.SC_BAD_REQUEST, e.getMessage());
}
}
@Override
public message next() throws CambriaApiException {
try {
if (!fTokens.more()) {
return null;
}
final int c = fTokens.next();
/*if (c ==','){
fCloseCount++;
System.out.println("fCloseCount=" + fCloseCount +" fCount "+fCount);
}*/
if (fIsList) {
if (c == ']' || (fCount > 0 && c == 10))
return null;
if (fCount > 0 && c != ',' && c!= 10) {
throw new CambriaApiException(HttpServletResponse.SC_BAD_REQUEST,
"Expected ',' or closing ']' after last object.");
}
if (fCount == 0 && c != '{' && c!= 10 && c!=32) {
throw new CambriaApiException(HttpServletResponse.SC_BAD_REQUEST, "Expected { to start an object.");
}
} else if (fCount != 0 || c != '{') {
throw new CambriaApiException(HttpServletResponse.SC_BAD_REQUEST, "Expected '{' to start an object.");
}
if (c == '{') {
fTokens.back();
}
final JSONObject o = new JSONObject(fTokens);
fCount++;
return new msg(o);
} catch (JSONException e) {
Log.error(e.toString());
throw new CambriaApiException(HttpServletResponse.SC_BAD_REQUEST, e.getMessage());
}
}
private class msg implements message {
private final String fKey;
private String fMsg;
private LogDetails logDetails;
private boolean transactionEnabled;
/**
* constructor
*
* @param o
*/
//public msg(JSONObject o){}
public msg(JSONObject o) {
String key = o.optString(kKeyField, fDefPart);
if (key == null) {
key = "" + System.currentTimeMillis();
}
fKey = key;
fMsg = o.toString().trim();
}
@Override
public String getKey() {
return fKey;
}
@Override
public String getMessage() {
return fMsg;
}
@Override
public boolean isTransactionEnabled() {
return transactionEnabled;
}
@Override
public void setTransactionEnabled(boolean transactionEnabled) {
this.transactionEnabled = transactionEnabled;
}
@Override
public void setLogDetails(LogDetails logDetails) {
this.logDetails = logDetails;
}
@Override
public LogDetails getLogDetails() {
return logDetails;
}
}
}
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