Handler (rpc-router 2.1.2 API)

```
public interface Handler
```
This is the interface that every business handler should extend from. It has two default methods that can be shared by all handlers.

Author:

Steve Hu

Field Summary

Fields
Modifier and Type Field Description

static String ERROR_NOT_DEFINED

static org.slf4j.Logger logger

static String REQUEST_SUCCESS

static String STATUS_VALIDATION_ERROR

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default String`	`getStatus(io.undertow.server.HttpServerExchange exchange, com.networknt.status.Status status)`	There are situations that the downstream service returns an error status response and we just want to bubble up to the caller and eventually to the original caller.
`default String`	`getStatus(io.undertow.server.HttpServerExchange exchange, String code, Object... args)`	Return a Status object so that the handler can get the HTTP response code to set exchange response.
`ByteBuffer`	`handle(io.undertow.server.HttpServerExchange exchange, Object object)`
`default ByteBuffer`	`validate(String serviceId, Object object)`

Field Detail

logger
```
static final org.slf4j.Logger logger
```

REQUEST_SUCCESS
```
static final String REQUEST_SUCCESS
```
See Also:

Constant Field Values

ERROR_NOT_DEFINED
```
static final String ERROR_NOT_DEFINED
```
See Also:

Constant Field Values

STATUS_VALIDATION_ERROR
```
static final String STATUS_VALIDATION_ERROR
```
See Also:

Constant Field Values

Method Detail

handle

ByteBuffer handle(io.undertow.server.HttpServerExchange exchange,
                  Object object)

validate

default ByteBuffer validate(String serviceId,
                            Object object)

getStatus
```
default String getStatus(io.undertow.server.HttpServerExchange exchange,
                         String code,
                         Object... args)
```
Return a Status object so that the handler can get the HTTP response code to set exchange response.

Parameters:

exchange - HttpServerExchange used to set the response code

code - Error code defined in status.yml

args - A number of arguments in the error description

Returns:

status Status object

getStatus
```
default String getStatus(io.undertow.server.HttpServerExchange exchange,
                         com.networknt.status.Status status)
```
There are situations that the downstream service returns an error status response and we just want to bubble up to the caller and eventually to the original caller.

Parameters:

exchange - HttpServerExchange

status - error status

Returns:

String the status string