Add allowNative system properties as switch (#28)

Author: pan3793

.gitignore

@@ -1,3 +1,4 @@
+.idea/
 **/target
 **/.classpath
 **/.project

arpack/src/main/java/dev/ludovic/netlib/arpack/ARPACK.java

@@ -27,6 +27,8 @@
 
 public interface ARPACK {
 
+  public static final String ALLOW_NATIVE_ARPACK = "dev.ludovic.netlib.arpack.allowNative";
+
   public static ARPACK getInstance() {
     return InstanceBuilder.arpack();
   }

arpack/src/main/java/dev/ludovic/netlib/arpack/InstanceBuilder.java

@@ -37,7 +37,14 @@ final class InstanceBuilder {
   private static final JavaARPACK javaArpack;
 
   static {
-    nativeArpack = initializeNative();
+    String allowNativeArpack = System.getProperty(ARPACK.ALLOW_NATIVE_ARPACK, "true");
+    if (Boolean.parseBoolean(allowNativeArpack)) {
+      nativeArpack = initializeNative();
+    } else {
+      log.info("Skip trying to load native BLAS implementation because system property " +
+              ARPACK.ALLOW_NATIVE_ARPACK + " is " + allowNativeArpack);
+      nativeArpack = null;
+    }
     javaArpack = initializeJava();
     arpack = nativeArpack != null ? nativeArpack : javaArpack;
 
@@ -52,7 +59,7 @@ private static NativeARPACK initializeNative() {
     try {
       return JNIARPACK.getInstance();
     } catch (Throwable t) {
-      log.log(Level.FINE, "Failed to load implementation from:" + JNIARPACK.class.getName(), t);
+      log.log(Level.FINE, "Failed to load implementation from: " + JNIARPACK.class.getName(), t);
       return null;
     }
   }

blas/src/main/java/dev/ludovic/netlib/blas/BLAS.java

@@ -27,6 +27,8 @@
 
 public interface BLAS {
 
+  public static final String ALLOW_NATIVE_BLAS = "dev.ludovic.netlib.blas.allowNative";
+
   public static BLAS getInstance() {
     return InstanceBuilder.blas();
   }

blas/src/main/java/dev/ludovic/netlib/blas/InstanceBuilder.java

@@ -37,7 +37,14 @@ final class InstanceBuilder {
   private static final JavaBLAS javaBlas;
 
   static {
-    nativeBlas = initializeNative();
+    String allowNativeBlas = System.getProperty(BLAS.ALLOW_NATIVE_BLAS, "true");
+    if (Boolean.parseBoolean(allowNativeBlas)) {
+      nativeBlas = initializeNative();
+    } else {
+      log.info("Skip trying to load native BLAS implementation because system property " +
+              BLAS.ALLOW_NATIVE_BLAS + " is " + allowNativeBlas);
+      nativeBlas = null;
+    }
     javaBlas = initializeJava();
     blas = nativeBlas != null ? nativeBlas : javaBlas;
 
@@ -52,7 +59,7 @@ private static NativeBLAS initializeNative() {
     try {
       return JNIBLAS.getInstance();
     } catch (Throwable t) {
-      log.log(Level.FINE, "Failed to load implementation from:" + JNIBLAS.class.getName(), t);
+      log.log(Level.FINE, "Failed to load implementation from: " + JNIBLAS.class.getName(), t);
       return null;
     }
   }

lapack/src/main/java/dev/ludovic/netlib/lapack/InstanceBuilder.java

@@ -37,7 +37,14 @@ final class InstanceBuilder {
   private static final JavaLAPACK javaLapack;
 
   static {
-    nativeLapack = initializeNative();
+    String allowNativeLapack = System.getProperty(LAPACK.ALLOW_NATIVE_LAPACK, "true");
+    if (Boolean.parseBoolean(allowNativeLapack)) {
+      nativeLapack = initializeNative();
+    } else {
+      log.info("Skip trying to load native LAPACK implementation because system property " +
+              LAPACK.ALLOW_NATIVE_LAPACK + " is " + allowNativeLapack);
+      nativeLapack = null;
+    }
     javaLapack = initializeJava();
     lapack = nativeLapack != null ? nativeLapack : javaLapack;
 
@@ -52,7 +59,7 @@ private static NativeLAPACK initializeNative() {
     try {
       return JNILAPACK.getInstance();
     } catch (Throwable t) {
-      log.log(Level.FINE, "Failed to load implementation from:" + JNILAPACK.class.getName(), t);
+      log.log(Level.FINE, "Failed to load implementation from: " + JNILAPACK.class.getName(), t);
       return null;
     }
   }

lapack/src/main/java/dev/ludovic/netlib/lapack/LAPACK.java

@@ -27,6 +27,8 @@
 
 public interface LAPACK {
 
+  public static final String ALLOW_NATIVE_LAPACK = "dev.ludovic.netlib.lapack.allowNative";
+
   public static LAPACK getInstance() {
     return InstanceBuilder.lapack();
   }