+ try {
+ // Try to load natively first, this works on Android and in testing.
+ System.loadLibrary(\"lightningjni\");
+ } catch (UnsatisfiedLinkError system_load_err) {
+ // Otherwise try to load from the library jar.
+ File tmpdir = new File(System.getProperty("java.io.tmpdir"), "ldk-java-nativelib");
+ tmpdir.mkdir(); // If it fails to create, assume it was there already
+ tmpdir.deleteOnExit();
+ String libname = "liblightningjni_" + System.getProperty("os.name").replaceAll(" ", "") +
+ "-" + System.getProperty("os.arch").replaceAll(" ", "") + ".nativelib";
+ try (InputStream is = bindings.class.getResourceAsStream("/" + libname)) {
+ Path libpath = new File(tmpdir.toPath().toString(), "liblightningjni.so").toPath();
+ Files.copy(is, libpath, StandardCopyOption.REPLACE_EXISTING);
+ Runtime.getRuntime().load(libpath.toString());
+ } catch (Exception e) {
+ System.err.println("Failed to load LDK native library.");
+ System.err.println("System LDK native library load failed with: " + system_load_err);
+ System.err.println("Resource-based LDK native library load failed with: " + e);
+ throw new IllegalArgumentException(e);
+ }
+ }