classToByteArray() — netty Function Reference

Architecture documentation for the classToByteArray() function in NativeLibraryLoader.java from the netty codebase.

Function java CommonUtil Internal called by 1

Entity Profile

CommonUtil→ Internal→ classToByteArray() — netty Function Reference

Dependency Diagram

graph TD
  b457bef5_b901_945e_103b_a802b8d26790["classToByteArray()"]
  e940cc67_3be6_5ff3_e560_4d68972dc13b["NativeLibraryLoader"]
  b457bef5_b901_945e_103b_a802b8d26790 -->|defined in| e940cc67_3be6_5ff3_e560_4d68972dc13b
  ad07e32d_733a_fab6_069d_362602f3f820["tryToLoadClass()"]
  ad07e32d_733a_fab6_069d_362602f3f820 -->|calls| b457bef5_b901_945e_103b_a802b8d26790
  style b457bef5_b901_945e_103b_a802b8d26790 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

common/src/main/java/io/netty/util/internal/NativeLibraryLoader.java lines 488–508

    private static byte[] classToByteArray(Class<?> clazz) throws ClassNotFoundException {
        String fileName = clazz.getName();
        int lastDot = fileName.lastIndexOf('.');
        if (lastDot > 0) {
            fileName = fileName.substring(lastDot + 1);
        }
        URL classUrl = clazz.getResource(fileName + ".class");
        if (classUrl == null) {
            throw new ClassNotFoundException(clazz.getName());
        }
        byte[] buf = new byte[1024];
        ByteArrayOutputStream out = new ByteArrayOutputStream(4096);
        try (InputStream in = classUrl.openStream()) {
            for (int r; (r = in.read(buf)) != -1;) {
                out.write(buf, 0, r);
            }
            return out.toByteArray();
        } catch (IOException ex) {
            throw new ClassNotFoundException(clazz.getName(), ex);
        }
    }