[jira] [Assigned] (PDFBOX-3272) Loaded fonts file descriptors open after closing document

["Andreas Lehmkühler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-3272?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andreas Lehmkühler reassigned PDFBOX-3272:
------------------------------------------

    Assignee: Andreas Lehmkühler

> Loaded fonts file descriptors open after closing document
> ---------------------------------------------------------
>
>                 Key: PDFBOX-3272
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3272
>             Project: PDFBox
>          Issue Type: Bug
>          Components: FontBox
>    Affects Versions: 2.0.0
>         Environment: Apache Tomcat, Linux
>            Reporter: Gregor Ambrozic
>            Assignee: Andreas Lehmkühler
>             Fix For: 2.0.0
>
>         Attachments: OpenSans-Regular.ttf
>
>
> I am experiencing problems with TTF fonts loaded for generating PDFs which eventually result in too many open files on Linux. The PDFBox version I tested last was 2.0.0-RC3.
> Basically for each PDF I create a document and load two fonts which I want to use. After the document is generated I close all the resources, but the file descriptors for both fonts remain open.
> The file descriptors should be automatically closed or an API should exist to close font resources.
> My basic code:
> {code}
> import java.io.File;
> import java.io.IOException;
> import java.lang.management.ManagementFactory;
> import org.apache.commons.io.output.ByteArrayOutputStream;
> import org.apache.pdfbox.pdmodel.PDDocument;
> import org.apache.pdfbox.pdmodel.PDPage;
> import org.apache.pdfbox.pdmodel.PDPageContentStream;
> import org.apache.pdfbox.pdmodel.common.PDRectangle;
> import org.apache.pdfbox.pdmodel.font.PDFont;
> import org.apache.pdfbox.pdmodel.font.PDType0Font;
> public class FontTest
> {
> 	// Run the program which will create 1 PDF document and close all resources per second for 100 seconds.
> 	// The font open file descriptor count will increase all the time, until the program finishes.
> 	// Command to check open files: lsof -p PID | grep ttf
> 	public static void main(String[] args)
> 	{
> 		// should print out PID before @<hostname>
> 		System.out.println("process id: " + ManagementFactory.getRuntimeMXBean().getName());
> 		for (int i = 0; i < 100; i++)
> 		{
> 			createPDF();
> 			try
> 			{
> 				Thread.sleep(1000);
> 			}
> 			catch (InterruptedException e)
> 			{
> 				e.printStackTrace();
> 			}
> 		}
> 	}
> 	private static void createPDF()
> 	{
> 		PDDocument doc = null;
> 		PDPage page = null;
> 		ByteArrayOutputStream bos = null;
> 		try
> 		{
> 			doc = new PDDocument();
> 			page = new PDPage(PDRectangle.A4);
> 			doc.addPage(page);
> 			// using standard font
> 			PDFont font = PDType0Font.load(doc, new File("./pdf/OpenSans-Regular.ttf"));
> 			PDPageContentStream content = new PDPageContentStream(doc, page);
> 			content.beginText();
> 			content.setFont(font, 72);
> 			content.showText("OMG");
> 			content.endText();
> 			content.close();
> 			bos = new ByteArrayOutputStream();
> 			doc.save(bos);
> 			byte[] bytes = bos.toByteArray();
> 			System.out.println("create new pdf with size: " + bytes.length);
> 		}
> 		catch (Exception e)
> 		{
> 			e.printStackTrace();
> 		}
> 		finally
> 		{
> 			try
> 			{
> 				doc.close();
> 				bos.close();
> 			}
> 			catch (IOException e)
> 			{
> 				e.printStackTrace();
> 			}
> 		}
> 	}
> }
> {code}



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