From 429e071408246a0927711f86e2a2ef95e671f924 Mon Sep 17 00:00:00 2001
From: Kilian Schuettler <kilian.schuettler@knecon.com>
Date: Tue, 26 Nov 2024 19:45:43 +0100
Subject: [PATCH] change loglevel

---
 .../imageprocessing/GhostScriptService.java   | 34 +++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/azure-ocr-service/azure-ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/imageprocessing/GhostScriptService.java b/azure-ocr-service/azure-ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/imageprocessing/GhostScriptService.java
index 25ee225..65b4669 100644
--- a/azure-ocr-service/azure-ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/imageprocessing/GhostScriptService.java
+++ b/azure-ocr-service/azure-ocr-service-processor/src/main/java/com/knecon/fforesight/service/ocr/processor/service/imageprocessing/GhostScriptService.java
@@ -6,6 +6,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
 import java.util.function.Consumer;
 
 import org.springframework.stereotype.Service;
@@ -15,14 +16,12 @@ import com.knecon.fforesight.service.ocr.processor.model.ImageFile;
 import com.knecon.fforesight.service.ocr.processor.model.PageBatch;
 
 import lombok.AccessLevel;
-import lombok.RequiredArgsConstructor;
 import lombok.SneakyThrows;
 import lombok.experimental.FieldDefaults;
 import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
 @Service
-@RequiredArgsConstructor
 @FieldDefaults(makeFinal = true, level = AccessLevel.PRIVATE)
 @SuppressWarnings("PMD") // can't figure out how to safely close the stdOut and stdError streams in line 72/74
 public class GhostScriptService {
@@ -34,6 +33,37 @@ public class GhostScriptService {
     private Semaphore concurrencySemaphore = new Semaphore(3);
 
 
+    public GhostScriptService(OcrServiceSettings ocrServiceSettings) {
+
+        this.ocrServiceSettings = ocrServiceSettings;
+        assertGhostscriptIsInstalled();
+    }
+
+
+    private void assertGhostscriptIsInstalled() {
+
+        try {
+            Process p = Runtime.getRuntime().exec("gs -v");
+            InputStream stdOut = p.getInputStream();
+            InputStream errOut = p.getErrorStream();
+            assert p.waitFor(1, TimeUnit.SECONDS);
+            log.info("Ghostscript is installed.");
+            String out = new String(stdOut.readAllBytes());
+            String error = new String(errOut.readAllBytes());
+            for (String line : out.split("\n")) {
+                log.info(line);
+            }
+            if (!error.isBlank()) {
+                log.error(error);
+            }
+        } catch (Exception e) {
+            log.error("Ghostscript is not installed!");
+            log.error(e.getMessage(), e);
+            throw new RuntimeException(e);
+        }
+    }
+
+
     @SneakyThrows
     public void startBatchRender(PageBatch batch, ImageProcessingSupervisor supervisor, Consumer<ImageFile> successHandler, Consumer<String> errorHandler) {