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perf: use temp files for PDF streams

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reduces the memory usage for large PDF files
This commit is contained in:
Gauthier Roebroeck 2022-01-31 11:16:55 +08:00
parent 8c46b8266b
commit 8da2489671
1 changed files with 2 additions and 1 deletions
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komga/src/main/kotlin/org/gotson/komga/infrastructure/mediacontainer/PdfExtractor.kt
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@ -2,6 +2,7 @@ package org.gotson.komga.infrastructure.mediacontainer
import com.github.benmanes.caffeine.cache.Caffeine
import mu.KotlinLogging
import org.apache.pdfbox.io.MemoryUsageSetting
import org.apache.pdfbox.pdmodel.PDDocument
import org.apache.pdfbox.pdmodel.PDPage
import org.apache.pdfbox.rendering.ImageType
@ -43,7 +44,7 @@ class PdfExtractor : MediaContainerExtractor {
}
override fun getEntryStream(path: Path, entryName: String): ByteArray {
val pdf = cache.get(path) { PDDocument.load(path.toFile()) }!!
val pdf = cache.get(path) { PDDocument.load(path.toFile(), MemoryUsageSetting.setupTempFileOnly()) }!!
val pageNumber = entryName.toInt()
val page = pdf.getPage(pageNumber)
val image = PDFRenderer(pdf).renderImage(pageNumber, page.getScale(), ImageType.RGB)