Examples with Label org.apache.skywalking.apm.network.language.agent.v3.Label used on opensource projects

Example 1 with Label

use of org.apache.skywalking.apm.network.language.agent.v3.Label in project openwebbeans by apache.

the class InterceptorDecoratorProxyFactory method generateInterceptorHandledMethod.

private void generateInterceptorHandledMethod(ClassWriter cw, Method method, int methodIndex, Class<?> classToProxy, String proxyClassFileName) throws ProxyGenerationException {
    if ("<init>".equals(method.getName())) {
        return;
    }
    if (isIgnoredMethod(method)) {
        return;
    }
    Class<?> returnType = method.getReturnType();
    Class<?>[] parameterTypes = method.getParameterTypes();
    Class<?>[] exceptionTypes = method.getExceptionTypes();
    int modifiers = method.getModifiers();
    if (Modifier.isFinal(modifiers) || Modifier.isStatic(modifiers)) {
        throw new WebBeansConfigurationException("It's not possible to proxy a final or static method: " + classToProxy.getName() + " " + method.getName());
    }
    // push the method definition
    int modifier = modifiers & (Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED | Opcodes.ACC_VARARGS);
    MethodVisitor mv = cw.visitMethod(modifier, method.getName(), Type.getMethodDescriptor(method), null, null);
    mv.visitCode();
    // push try/catch block, to catch declared exceptions, and to catch java.lang.Throwable
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    if (exceptionTypes.length > 0) {
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/reflect/InvocationTargetException");
    }
    // push try code
    mv.visitLabel(l0);
    String classNameToOverride = method.getDeclaringClass().getName().replace('.', '/');
    mv.visitLdcInsn(Type.getType("L" + classNameToOverride + ";"));
    // the following code generates the bytecode for this line of Java:
    // Method method = <proxy>.class.getMethod("add", new Class[] { <array of function argument classes> });
    // get the method name to invoke, and push to stack
    mv.visitLdcInsn(method.getName());
    // create the Class[]
    createArrayDefinition(mv, parameterTypes.length, Class.class);
    int length = 1;
    // push parameters into array
    for (int i = 0; i < parameterTypes.length; i++) {
        // keep copy of array on stack
        mv.visitInsn(Opcodes.DUP);
        Class<?> parameterType = parameterTypes[i];
        // push number onto stack
        pushIntOntoStack(mv, i);
        if (parameterType.isPrimitive()) {
            String wrapperType = getWrapperType(parameterType);
            mv.visitFieldInsn(Opcodes.GETSTATIC, wrapperType, "TYPE", "Ljava/lang/Class;");
        } else {
            mv.visitLdcInsn(Type.getType(parameterType));
        }
        mv.visitInsn(Opcodes.AASTORE);
        if (Long.TYPE.equals(parameterType) || Double.TYPE.equals(parameterType)) {
            length += 2;
        } else {
            length++;
        }
    }
    // the following code generates bytecode equivalent to:
    // return ((<returntype>) invocationHandler.invoke(this, {methodIndex}, new Object[] { <function arguments }))[.<primitive>Value()];
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    // get the invocationHandler field from this class
    mv.visitFieldInsn(Opcodes.GETFIELD, proxyClassFileName, FIELD_INTERCEPTOR_HANDLER, Type.getDescriptor(InterceptorHandler.class));
    // add the Method from the static array as first parameter
    mv.visitFieldInsn(Opcodes.GETSTATIC, proxyClassFileName, FIELD_INTERCEPTED_METHODS, Type.getDescriptor(Method[].class));
    // push the methodIndex of the current method
    if (methodIndex < 128) {
        mv.visitIntInsn(Opcodes.BIPUSH, methodIndex);
    } else if (methodIndex < 32267) {
        // for methods > 127 we need to push a short number as index
        mv.visitIntInsn(Opcodes.SIPUSH, methodIndex);
    } else {
        throw new ProxyGenerationException("Sorry, we only support Classes with 2^15 methods...");
    }
    // and now load the Method from the array
    mv.visitInsn(Opcodes.AALOAD);
    // prepare the parameter array as Object[] and store it on the stack
    pushMethodParameterArray(mv, parameterTypes);
    // invoke the invocationHandler
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getInternalName(InterceptorHandler.class), "invoke", "(Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;", true);
    // cast the result
    mv.visitTypeInsn(Opcodes.CHECKCAST, getCastType(returnType));
    if (returnType.isPrimitive() && (!Void.TYPE.equals(returnType))) {
        // get the primitive value
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, getWrapperType(returnType), getPrimitiveMethod(returnType), "()" + Type.getDescriptor(returnType), false);
    }
    // push return
    mv.visitLabel(l1);
    if (!Void.TYPE.equals(returnType)) {
        mv.visitInsn(getReturnInsn(returnType));
    } else {
        mv.visitInsn(Opcodes.POP);
        mv.visitInsn(Opcodes.RETURN);
    }
    // catch InvocationTargetException
    if (exceptionTypes.length > 0) {
        mv.visitLabel(l2);
        mv.visitVarInsn(Opcodes.ASTORE, length);
        Label l5 = new Label();
        mv.visitLabel(l5);
        for (int i = 0; i < exceptionTypes.length; i++) {
            Class<?> exceptionType = exceptionTypes[i];
            mv.visitLdcInsn(Type.getType("L" + exceptionType.getCanonicalName().replace('.', '/') + ";"));
            mv.visitVarInsn(Opcodes.ALOAD, length);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z", false);
            Label l6 = new Label();
            mv.visitJumpInsn(Opcodes.IFEQ, l6);
            Label l7 = new Label();
            mv.visitLabel(l7);
            mv.visitVarInsn(Opcodes.ALOAD, length);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
            mv.visitTypeInsn(Opcodes.CHECKCAST, getCastType(exceptionType));
            mv.visitInsn(Opcodes.ATHROW);
            mv.visitLabel(l6);
            if (i == (exceptionTypes.length - 1)) {
                mv.visitTypeInsn(Opcodes.NEW, "java/lang/reflect/UndeclaredThrowableException");
                mv.visitInsn(Opcodes.DUP);
                mv.visitVarInsn(Opcodes.ALOAD, length);
                mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/reflect/UndeclaredThrowableException", "<init>", "(Ljava/lang/Throwable;)V", false);
                mv.visitInsn(Opcodes.ATHROW);
            }
        }
    }
    // finish this method
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Example 2 with Label

use of org.apache.skywalking.apm.network.language.agent.v3.Label in project skywalking-java by apache.

the class GaugeTest method validateMeterData.

/**
 * Check the single value message
 */
private void validateMeterData(String name, List<Label> labels, double value, MeterData.Builder validate) {
    Assert.assertNotNull(validate);
    Assert.assertEquals(validate.getMetricCase().getNumber(), MeterData.SINGLEVALUE_FIELD_NUMBER);
    MeterSingleValue singleValue = validate.getSingleValue();
    Assert.assertNotNull(singleValue);
    Assert.assertEquals(singleValue.getValue(), value, 0.0);
    Assert.assertEquals(singleValue.getName(), name);
    Assert.assertEquals(singleValue.getLabelsList(), labels);
}

Example 3 with Label

use of org.apache.skywalking.apm.network.language.agent.v3.Label in project skywalking-java by apache.

the class HistogramTest method testTransform.

@Test
public void testTransform() {
    final List<Label> labels = Arrays.asList(Label.newBuilder().setName("k1").setValue("v1").build());
    // Check histogram message
    final Histogram histogram = MeterFactory.histogram("test").steps(Arrays.asList(2d, 5d)).minValue(1d).tag("k1", "v1").build();
    histogram.addValue(1);
    histogram.addValue(3);
    histogram.addValue(3);
    histogram.addValue(7);
    verifyHistogram("test", labels, Arrays.asList(1d, 2d, 5d), Arrays.asList(1L, 2L, 1L), histogram.transform());
    histogram.addValue(9);
    verifyHistogram("test", labels, Arrays.asList(1d, 2d, 5d), Arrays.asList(1L, 2L, 2L), histogram.transform());
}

Example 4 with Label

use of org.apache.skywalking.apm.network.language.agent.v3.Label in project security-lib by ncsa.

the class GUIDemo method helloWorld.

public static void helloWorld(Screen screen) {
    // Create panel to hold components
    Panel panel = new Panel();
    panel.setLayoutManager(new GridLayout(2));
    panel.addComponent(new Label("Forename"));
    panel.addComponent(new TextBox());
    panel.addComponent(new Label("Surname"));
    panel.addComponent(new TextBox());
    // Empty space underneath labels
    panel.addComponent(new EmptySpace(new TerminalSize(0, 0)));
    panel.addComponent(new Button("Submit"));
    // Create window to hold the panel
    BasicWindow window = new BasicWindow();
    window.setComponent(panel);
    // Create gui and start gui
    MultiWindowTextGUI gui = new MultiWindowTextGUI(screen, new DefaultWindowManager(), new EmptySpace(TextColor.ANSI.BLUE));
    gui.addWindowAndWait(window);
}

Example 5 with Label

use of org.apache.skywalking.apm.network.language.agent.v3.Label in project jodd by oblac.

the class ProxettaAsmUtil method visitReturn.

// ---------------------------------------------------------------- return
/**
	 * Visits return opcodes.
	 */
public static void visitReturn(MethodVisitor mv, MethodInfo methodInfo, boolean isLast) {
    switch(methodInfo.getReturnOpcodeType()) {
        case 'V':
            if (isLast) {
                mv.visitInsn(POP);
            }
            mv.visitInsn(RETURN);
            break;
        case 'B':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(ICONST_0);
                mv.visitInsn(IRETURN);
                mv.visitLabel(label);
                AsmUtil.byteValue(mv);
            }
            mv.visitInsn(IRETURN);
            break;
        case 'C':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(ICONST_0);
                mv.visitInsn(IRETURN);
                mv.visitLabel(label);
                AsmUtil.charValue(mv);
            }
            mv.visitInsn(IRETURN);
            break;
        case 'S':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(ICONST_0);
                mv.visitInsn(IRETURN);
                mv.visitLabel(label);
                AsmUtil.shortValue(mv);
            }
            mv.visitInsn(IRETURN);
            break;
        case 'I':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(ICONST_0);
                mv.visitInsn(IRETURN);
                mv.visitLabel(label);
                AsmUtil.intValue(mv);
            }
            mv.visitInsn(IRETURN);
            break;
        case 'Z':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(ICONST_0);
                mv.visitInsn(IRETURN);
                mv.visitLabel(label);
                AsmUtil.booleanValue(mv);
            }
            mv.visitInsn(IRETURN);
            break;
        case 'J':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(LCONST_0);
                mv.visitInsn(LRETURN);
                mv.visitLabel(label);
                AsmUtil.longValue(mv);
            }
            mv.visitInsn(LRETURN);
            break;
        case 'F':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(FCONST_0);
                mv.visitInsn(FRETURN);
                mv.visitLabel(label);
                AsmUtil.floatValue(mv);
            }
            mv.visitInsn(FRETURN);
            break;
        case 'D':
            if (isLast) {
                mv.visitInsn(DUP);
                Label label = new Label();
                mv.visitJumpInsn(IFNONNULL, label);
                mv.visitInsn(POP);
                mv.visitInsn(DCONST_0);
                mv.visitInsn(DRETURN);
                mv.visitLabel(label);
                AsmUtil.doubleValue(mv);
            }
            mv.visitInsn(DRETURN);
            break;
        default:
            mv.visitInsn(ARETURN);
            break;
    }
}