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https://issues.apache.org/jira/browse/PDFBOX-4774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17037481#comment-17037481
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Tilman Hausherr commented on PDFBOX-4774:
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>From the description of AWS Lambda
[https://en.wikipedia.org/wiki/AWS_Lambda]
it makes no sense that PDFBox builds its cache every time because the
instances are stateless and you pay per 100 milliseconds, so your solution is
the right one. IMHO your solution is a good one and we don't have to change
anything.
{{PDFBox_External_Fonts.properties}} is for 1.8 only.
> Add AWS Lambda support to FontFileFinder
> ----------------------------------------
>
> Key: PDFBOX-4774
> URL: https://issues.apache.org/jira/browse/PDFBOX-4774
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 2.0.18
> Reporter: Ben Manes
> Priority: Major
> Attachments: fixed_page.jpg, original.pdf, rendered_page.jpg
>
>
> The font directory finder is hard coded based on the operating system and is
> not directly extensible. Instead, if I understand correctly, the fonts have
> to be explicitly declared in a {{PDFBox_External_Fonts.properties}} file.
> AWS Lambda includes only minimal fonts in its linux distribution. For some
> documents this is too limiting, so on our EC2 instances we install
> {{msttcorefonts}}, {{ttf-aenigma}}, and {{fonts-tuffy}}. These go into
> {{/usr/share/fonts}} which the {{UnixFontDirFinder}} inspects.
> AWS Lambda will unzip the distribution into {{/var/task}}, will unzip layers
> into {{/opt}} only allows tasks to otherwise write to {{/tmp}}. The common
> recommendation for fonts is to include them in the lambda, reference them at
> {{/var/task/fonts}}, and set {{FONTCONFIG_PATH}} to that path for headless
> tasks like Chrome's print-to-pdf.
> Since PdfBox does not use font-config this solution does not work. Ideally it
> would be nice if one could specify a custom {{FontDirFinder}} or add custom
> directories (such as by a system property if not API). Alternatively, PdfBox
> could include reasonable default locations if the environmental variable
> {{LAMBDA_TASK_ROOT}} is set.
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