com.baidu.disconf.client.common.annotations.DisconfFileItem Java Examples

/**
 * 自动导入Static配置数据,能识别 DisconfFileItem 或 DisconfFileItem 的标识
 *
 * @Description: auto ware
 */
private static void autowareStaticConfig(Class<?> cls, Properties prop) throws Exception {

    if (null == prop) {
        throw new Exception("cannot autowareConfig null");
    }

    try {

        Field[] fields = cls.getDeclaredFields();

        for (Field field : fields) {

            if (field.isAnnotationPresent(DisconfFileItem.class)) {

                if (!Modifier.isStatic(field.getModifiers())) {
                    continue;
                }

                field.setAccessible(true);

                String name = field.getName();
                Object value = prop.getProperty(name, null);
                if (value != null) {
                    ClassUtils.setFieldValeByType(field, null, String.valueOf(value));
                }
            }
        }
    } catch (Exception e) {

        throw new Exception("error while autowire config file", e);
    }
}
 

/**
 * 对于一个 get/is 方法，返回其相对应的Field
 */
public static Field getFieldFromMethod(Method method, Field[] expectedFields, DisConfigTypeEnum disConfigTypeEnum) {

    String fieldName;

    if (disConfigTypeEnum.equals(DisConfigTypeEnum.FILE)) {

        DisconfFileItem disconfFileItem = method.getAnnotation(DisconfFileItem.class);
        // 根据用户设定的注解来获取
        fieldName = disconfFileItem.associateField();

    } else {

        DisconfItem disItem = method.getAnnotation(DisconfItem.class);
        // 根据用户设定的注解来获取
        fieldName = disItem.associateField();
    }

    //
    // 如果用户未设定注解，则猜其名字
    //
    if (StringUtils.isEmpty(fieldName)) {
        // 从方法名 获取其 Field 名
        fieldName = ClassUtils.getFieldNameByGetMethodName(method.getName());
    }

    // 确认此Field名是正确的
    for (Field field : expectedFields) {

        if (field.getName().equals(fieldName)) {
            return field;
        }
    }

    LOGGER.error(method.toString() + " cannot get its related field name. ");

    return null;
}
 

/**
 * 自动导入Static配置数据,能识别 DisconfFileItem 或 DisconfFileItem 的标识
 *
 * @Description: auto ware
 */
private static void autowareStaticConfig(Class<?> cls, Properties prop) throws Exception {

    if (null == prop) {
        throw new Exception("cannot autowareConfig null");
    }

    try {

        Field[] fields = cls.getDeclaredFields();

        for (Field field : fields) {

            if (field.isAnnotationPresent(DisconfFileItem.class)) {

                if (!Modifier.isStatic(field.getModifiers())) {
                    continue;
                }

                field.setAccessible(true);

                String name = field.getName();
                Object value = prop.getProperty(name, null);
                if (value != null) {
                    ClassUtils.setFieldValeByType(field, null, String.valueOf(value));
                }
            }
        }
    } catch (Exception e) {

        throw new Exception("error while autowire config file", e);
    }
}
 

/**
 * 对于一个 get/is 方法，返回其相对应的Field
 */
public static Field getFieldFromMethod(Method method, Field[] expectedFields, DisConfigTypeEnum disConfigTypeEnum) {

    String fieldName;

    if (disConfigTypeEnum.equals(DisConfigTypeEnum.FILE)) {

        DisconfFileItem disconfFileItem = method.getAnnotation(DisconfFileItem.class);
        // 根据用户设定的注解来获取
        fieldName = disconfFileItem.associateField();

    } else {

        DisconfItem disItem = method.getAnnotation(DisconfItem.class);
        // 根据用户设定的注解来获取
        fieldName = disItem.associateField();
    }

    //
    // 如果用户未设定注解，则猜其名字
    //
    if (StringUtils.isEmpty(fieldName)) {
        // 从方法名 获取其 Field 名
        fieldName = ClassUtils.getFieldNameByGetMethodName(method.getName());
    }

    // 确认此Field名是正确的
    for (Field field : expectedFields) {

        if (field.getName().equals(fieldName)) {
            return field;
        }
    }

    LOGGER.error(method.toString() + " cannot get its related field name. ");

    return null;
}
 

@DisconfFileItem(name = "varA2")
public Long getVarA2() {
    return varA2;
}
 

@DisconfFileItem(name = "confa.varA2")
public Long getVarA2() {
    return varA2;
}
 

@DisconfFileItem(name = "varA2")
public Long getVarA2() {
    return varA2;
}
 

@DisconfFileItem(name = "staticvar2", associateField = "staticvar2")
public static double getStaticvar2() {
    return staticvar2;
}
 

@DisconfFileItem(name = "staticvar", associateField = "staticvar")
public static int getStaticVar() {
    return staticvar;
}
 

/**
 * 获取配置文件数据, 只有开启disconf远程才会进行切面
 *
 * @throws Throwable
 */
@Around("anyPublicMethod() && @annotation(disconfFileItem)")
public Object decideAccess(ProceedingJoinPoint pjp, DisconfFileItem disconfFileItem) throws Throwable {

    if (DisClientConfig.getInstance().ENABLE_DISCONF) {

        MethodSignature ms = (MethodSignature) pjp.getSignature();
        Method method = ms.getMethod();

        //
        // 文件名
        //
        Class<?> cls = method.getDeclaringClass();
        DisconfFile disconfFile = cls.getAnnotation(DisconfFile.class);

        //
        // Field名
        //
        Field field = MethodUtils.getFieldFromMethod(method, cls.getDeclaredFields(), DisConfigTypeEnum.FILE);
        if (field != null) {

            //
            // 请求仓库配置数据
            //
            DisconfStoreProcessor disconfStoreProcessor =
                    DisconfStoreProcessorFactory.getDisconfStoreFileProcessor();
            Object ret = disconfStoreProcessor.getConfig(disconfFile.filename(), disconfFileItem.name());
            if (ret != null) {
                LOGGER.debug("using disconf store value: " + disconfFile.filename() + " ("
                        + disconfFileItem.name() +
                        " , " + ret + ")");
                return ret;
            }
        }
    }

    Object rtnOb;

    try {
        // 返回原值
        rtnOb = pjp.proceed();
    } catch (Throwable t) {
        LOGGER.info(t.getMessage());
        throw t;
    }

    return rtnOb;
}
 

/**
 * 扫描基本信息
 */
private ScanStaticModel scanBasicInfo(List<String> packNameList) {

    ScanStaticModel scanModel = new ScanStaticModel();

    //
    // 扫描对象
    //
    Reflections reflections = getReflection(packNameList);
    scanModel.setReflections(reflections);

    //
    // 获取DisconfFile class
    //
    Set<Class<?>> classdata = reflections.getTypesAnnotatedWith(DisconfFile.class);
    scanModel.setDisconfFileClassSet(classdata);

    //
    // 获取DisconfFileItem method
    //
    Set<Method> af1 = reflections.getMethodsAnnotatedWith(DisconfFileItem.class);
    scanModel.setDisconfFileItemMethodSet(af1);

    //
    // 获取DisconfItem method
    //
    af1 = reflections.getMethodsAnnotatedWith(DisconfItem.class);
    scanModel.setDisconfItemMethodSet(af1);

    //
    // 获取DisconfActiveBackupService
    //
    classdata = reflections.getTypesAnnotatedWith(DisconfActiveBackupService.class);
    scanModel.setDisconfActiveBackupServiceClassSet(classdata);

    //
    // 获取DisconfUpdateService
    //
    classdata = reflections.getTypesAnnotatedWith(DisconfUpdateService.class);
    scanModel.setDisconfUpdateService(classdata);

    // update pipeline
    Set<Class<? extends IDisconfUpdatePipeline>> iDisconfUpdatePipeline = reflections.getSubTypesOf
            (IDisconfUpdatePipeline
                    .class);
    if (iDisconfUpdatePipeline != null && iDisconfUpdatePipeline.size() != 0) {
        scanModel.setiDisconfUpdatePipeline((Class<IDisconfUpdatePipeline>) iDisconfUpdatePipeline
                .toArray()[0]);
    }

    return scanModel;
}
 

@DisconfFileItem(name = "confa.varA2")
public Long getVarA2() {
    return varA2;
}
 

@DisconfFileItem(name = "redis.port")
public String getPort() {
	return port;
}
 

@DisconfFileItem(name = "staticvar2", associateField = "staticvar2")
public static double getStaticvar2() {
    return staticvar2;
}
 

@DisconfFileItem(name = "staticvar", associateField = "staticvar")
public static int getStaticVar() {
    return staticvar;
}
 

/**
 * 获取配置文件数据, 只有开启disconf远程才会进行切面
 *
 * @throws Throwable
 */
@Around("anyPublicMethod() && @annotation(disconfFileItem)")
public Object decideAccess(ProceedingJoinPoint pjp, DisconfFileItem disconfFileItem) throws Throwable {

    if (DisClientConfig.getInstance().ENABLE_DISCONF) {

        MethodSignature ms = (MethodSignature) pjp.getSignature();
        Method method = ms.getMethod();

        //
        // 文件名
        //
        Class<?> cls = method.getDeclaringClass();
        DisconfFile disconfFile = cls.getAnnotation(DisconfFile.class);

        //
        // Field名
        //
        Field field = MethodUtils.getFieldFromMethod(method, cls.getDeclaredFields(), DisConfigTypeEnum.FILE);
        if (field != null) {

            //
            // 请求仓库配置数据
            //
            DisconfStoreProcessor disconfStoreProcessor =
                    DisconfStoreProcessorFactory.getDisconfStoreFileProcessor();
            Object ret = disconfStoreProcessor.getConfig(disconfFile.filename(), disconfFileItem.name());
            if (ret != null) {
                LOGGER.debug("using disconf store value: " + disconfFile.filename() + " ("
                        + disconfFileItem.name() +
                        " , " + ret + ")");
                return ret;
            }
        }
    }

    Object rtnOb;

    try {
        // 返回原值
        rtnOb = pjp.proceed();
    } catch (Throwable t) {
        LOGGER.info(t.getMessage());
        throw t;
    }

    return rtnOb;
}
 

/**
 * 扫描基本信息
 */
private ScanStaticModel scanBasicInfo(List<String> packNameList) {

    ScanStaticModel scanModel = new ScanStaticModel();

    //
    // 扫描对象
    //
    Reflections reflections = getReflection(packNameList);
    scanModel.setReflections(reflections);

    //
    // 获取DisconfFile class
    //
    Set<Class<?>> classdata = reflections.getTypesAnnotatedWith(DisconfFile.class);
    scanModel.setDisconfFileClassSet(classdata);

    //
    // 获取DisconfFileItem method
    //
    Set<Method> af1 = reflections.getMethodsAnnotatedWith(DisconfFileItem.class);
    scanModel.setDisconfFileItemMethodSet(af1);

    //
    // 获取DisconfItem method
    //
    af1 = reflections.getMethodsAnnotatedWith(DisconfItem.class);
    scanModel.setDisconfItemMethodSet(af1);

    //
    // 获取DisconfActiveBackupService
    //
    classdata = reflections.getTypesAnnotatedWith(DisconfActiveBackupService.class);
    scanModel.setDisconfActiveBackupServiceClassSet(classdata);

    //
    // 获取DisconfUpdateService
    //
    classdata = reflections.getTypesAnnotatedWith(DisconfUpdateService.class);
    scanModel.setDisconfUpdateService(classdata);

    // update pipeline
    Set<Class<? extends IDisconfUpdatePipeline>> iDisconfUpdatePipeline = reflections.getSubTypesOf
            (IDisconfUpdatePipeline
                    .class);
    if (iDisconfUpdatePipeline != null && iDisconfUpdatePipeline.size() != 0) {
        scanModel.setiDisconfUpdatePipeline((Class<IDisconfUpdatePipeline>) iDisconfUpdatePipeline
                .toArray()[0]);
    }

    return scanModel;
}
 

@DisconfFileItem(name = "redis.host")
public String getHost() {
	return host;
}
 

@DisconfFileItem(name = "redis.port")
public String getPort() {
	return port;
}
 

@DisconfFileItem(name = "redis.host")
public String getHost() {
	return host;
}
 

/**
 * name是配置文件中名字; associateField是此get方法相对应的Field名
 *
 * @return
 */
@DisconfFileItem(name = "varA", associateField = "varA")
public Long getVarA() {
    return varA;
}
 

/**
 * name是配置文件中名字; associateField是此get方法相对应的Field名
 *
 * @return
 */
@DisconfFileItem(name = "confa.varA", associateField = "varA")
public Long getVarA() {
    return varA;
}
 

/**
 * 端口, 分布式文件配置
 *
 * @return
 */
@DisconfFileItem(name = "redis.port", associateField = "port")
public int getPort() {
    return port;
}
 

/**
 * 地址, 分布式文件配置
 *
 * @return
 */
@DisconfFileItem(name = "redis.host", associateField = "host")
public String getHost() {
    return host;
}
 

/**
 * name是配置文件中名字; associateField是此get方法相对应的Field名
 *
 * @return
 */
@DisconfFileItem(name = "varA", associateField = "varA")
public Long getVarA() {
    return varA;
}
 

/**
 * name是配置文件中名字; associateField是此get方法相对应的Field名
 *
 * @return
 */
@DisconfFileItem(name = "confa.varA", associateField = "varA")
public Long getVarA() {
    return varA;
}