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*
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*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
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* If applicable, add the following below the License Header, with the fields
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* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
// Portions Copyright [2016-2022] [Payara Foundation and/or its affiliates]
package org.glassfish.admin.rest.resources.custom;
import com.sun.enterprise.server.logging.logviewer.backend.LogFilter;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.io.Writer;
import java.nio.charset.Charset;
import jakarta.ws.rs.DefaultValue;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.QueryParam;
import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.*;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.GZIPOutputStream;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.core.Response.ResponseBuilder;
import org.glassfish.admin.rest.adapter.LocatorBridge;
import org.glassfish.admin.rest.logviewer.CharSpool;
import org.glassfish.admin.rest.logviewer.LineEndNormalizingWriter;
import org.glassfish.admin.rest.logviewer.WriterOutputStream;
import org.glassfish.hk2.api.ServiceLocator;
import org.jvnet.hk2.config.Dom;
/**
* Represents a large text data.
*
*
* This class defines methods for handling progressive text update.
*
*
Usage
*
*
* @author Kohsuke Kawaguchi
* @author Susan Rai
*/
//@Path("notification-log-view/")
public class NotificationLogViewer extends LogViewerResource {
private static final Logger logger = Logger.getLogger("NotificationLogViewer");
List fileBody = new ArrayList<>();
private Source source;
@GET
@Produces("text/plain;charset=UTF-8")
@Override
public Response get(@QueryParam("start")
@DefaultValue("0") long start,
@QueryParam("instanceName") @DefaultValue("server") String instanceName,
@Context HttpHeaders hh) throws IOException {
boolean gzipOK = true;
MultivaluedMap headerParams = hh.getRequestHeaders();
String acceptEncoding = headerParams.getFirst("Accept-Encoding");
if (acceptEncoding == null || !acceptEncoding.contains("gzip")) {
gzipOK = false;
}
// getting logFilter object from habitat
LogFilter logFilter = habitat.getRemoteLocator().getService(LogFilter.class);
// getting log file location on DAS for server/local instance/remote instance
String logLocation = logFilter.getLogFileForGivenTarget(instanceName);
readServerLogFile(logLocation);
String logFolderLocation = logLocation.replace("server.log", "");
String notificationFolderLocation = logFolderLocation + File.separator + "notificationLogs";
createNotificationLogFolder(notificationFolderLocation);
String notificationLogLocation = notificationFolderLocation + File.separator + "notification.log";
writeToNotificationLogFile(notificationLogLocation);
initLargeText(new File(notificationLogLocation), false);
if (!source.exists()) {
// file doesn't exist yet
UriBuilder uriBuilder = ui.getAbsolutePathBuilder();
uriBuilder.queryParam("start", 0);
uriBuilder.queryParam("instanceName", instanceName);
return Response.ok(
new StreamingOutput() {
@Override
public void write(OutputStream out) throws IOException, WebApplicationException {
}
}).
header("X-Text-Append-Next", uriBuilder.build()).build();
}
if (source.length() < start) {
start = 0; // text rolled over
}
final CharSpool spool = new CharSpool();
long size = writeLogTo(start, spool);
// response.addHeader("X-Text-Size", String.valueOf(r));
// if (!completed) {
// response.addHeader("X-More-Data", "true");
// }
if (size < 10000) {
gzipOK = false;
}
final boolean gz = gzipOK;
ResponseBuilder rp = Response.ok(
new StreamingOutput() {
@Override
public void write(OutputStream out) throws IOException, WebApplicationException {
Writer w = getWriter(out, gz);
spool.writeTo(new LineEndNormalizingWriter(w));
w.flush();
w.close();
}
});
UriBuilder uriBuilder = ui.getAbsolutePathBuilder();
uriBuilder.queryParam("start", size);
uriBuilder.queryParam("instanceName", instanceName);
URI next = uriBuilder.build();
rp.header("X-Text-Append-Next", next);
if (gzipOK) {
rp = rp.header("Content-Encoding", "gzip");
}
return rp.build();
// return rp.header("X-Text-Size", String.valueOf(r)).header("X-More-Data", "true").build();
}
private Writer getWriter(OutputStream out, boolean gzipOK) throws IOException {
if (gzipOK == false) {
return new OutputStreamWriter(out);
} else {
return new OutputStreamWriter(new GZIPOutputStream(out), "UTF-8");
}
}
public void createNotificationLogFolder(String FolderName) {
File notificationFolder = new File(FolderName);
if (!notificationFolder.exists()) {
if (notificationFolder.mkdir()) {
logger.log(Level.INFO, "Notification Folder was created on " + FolderName);
} else {
logger.log(Level.SEVERE, "Failed to create Notification Folder");
}
}
}
public void writeToNotificationLogFile(String fileName) {
try (PrintWriter pw = new PrintWriter(new FileOutputStream(fileName))) {
for (String text : fileBody) {
if (text.contains("WARNING") || text.contains("SEVERE") || text.contains("FINE")
|| text.contains("CONFIG") || text.contains("INFO")) {
pw.println("\n" + text);
} else {
pw.println(text);
}
}
} catch (FileNotFoundException ex) {
logger.log(Level.SEVERE, null, ex);
}
}
public void readServerLogFile(String file) {
try (BufferedReader br = new BufferedReader(new FileReader(file))) {
String sCurrentLine;
while ((sCurrentLine = br.readLine()) != null) {
if (sCurrentLine.contains("LogNotifier") || sCurrentLine.contains("RequestEvent")
|| sCurrentLine.contains("ServletRequestEvent") || sCurrentLine.contains("conversationId")
|| sCurrentLine.contains("elapsedTime") || sCurrentLine.contains("user-agent")
|| sCurrentLine.contains("requestTracing") || sCurrentLine.contains("alarmType")) {
fileBody.add(sCurrentLine);
}
}
} catch (IOException ex) {
logger.log(Level.SEVERE, null, ex);
}
}
}
