Move jniortools import into a separate thread. (#1331)

* Move jniortools import into a separate thread.

Signed-off-by: thiriondan <[email protected]>

* Add EOF

Signed-off-by: thiriondan <[email protected]>

* Revert "Add EOF"

This reverts commit 6ce6ce4.

Signed-off-by: thiriondan <[email protected]>

* Revert "Move jniortools import into a separate thread."

This reverts commit 081280b.

Signed-off-by: thiriondan <[email protected]>

* Add OR-tools loading in Castor class so it gets loaded upon start

Signed-off-by: thiriondan <[email protected]>

---------

Signed-off-by: thiriondan <[email protected]>

Author: danielthirion

ra-optimisation/search-tree-rao/src/main/java/com/powsybl/openrao/searchtreerao/castor/algorithm/Castor.java

@@ -7,6 +7,8 @@
 
 package com.powsybl.openrao.searchtreerao.castor.algorithm;
 
+import com.google.ortools.Loader;
+import com.powsybl.openrao.commons.logs.OpenRaoLoggerProvider;
 import com.powsybl.openrao.data.raoresult.api.RaoResult;
 import com.powsybl.openrao.raoapi.RaoInput;
 import com.powsybl.openrao.raoapi.RaoProvider;
@@ -28,6 +30,15 @@
  */
 @AutoService(RaoProvider.class)
 public class Castor implements RaoProvider {
+
+    static {
+        try {
+            Loader.loadNativeLibraries();
+        } catch (Exception e) {
+            OpenRaoLoggerProvider.TECHNICAL_LOGS.error("Native library jniortools could not be loaded. You can ignore this message if it is not needed.");
+        }
+    }
+
     private static final String SEARCH_TREE_RAO = "SearchTreeRao";
 
     // Do not store any big object in this class as it is a static RaoProvider