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package javax.ws.rs;
import javax.ws.rs.core.Response;
/**
* Runtime exception for applications.
*
* This exception may be thrown by a resource method, provider or
* {@link javax.ws.rs.core.StreamingOutput} implementation if a specific
* HTTP error response needs to be produced. Only effective if thrown prior to
* the response being committed.
*
* @author Paul Sandoz
* @author Marek Potociar
* @since 1.0
*/
public class WebApplicationException extends RuntimeException {
private static final long serialVersionUID = 8273970399584007146L;
private final Response response;
/**
* Construct a new instance with a default HTTP status code of 500
* and a default message generated from the HTTP status code and the associated HTTP status reason phrase.
*/
public WebApplicationException() {
this((Throwable) null, Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Construct a new instance with the supplied message and a default HTTP status code of 500.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @since 2.0
*/
public WebApplicationException(String message) {
this(message, null, Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Construct a new instance using the supplied response
* and a default message generated from the response's HTTP status code and the associated HTTP status reason phrase.
*
* @param response the response that will be returned to the client, a value
* of null will be replaced with an internal server error response (status
* code 500).
*/
public WebApplicationException(final Response response) {
this((Throwable) null, response);
}
/**
* Construct a new instance using the supplied message and response.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param response the response that will be returned to the client, a value
* of null will be replaced with an internal server error response (status
* code 500).
* @since 2.0
*/
public WebApplicationException(final String message, final Response response) {
this(message, null, response);
}
/**
* Construct a new instance with the supplied HTTP status code
* and a default message generated from the HTTP status code and the associated HTTP status reason phrase.
*
* @param status the HTTP status code that will be returned to the client.
*/
public WebApplicationException(final int status) {
this((Throwable) null, status);
}
/**
* Construct a new instance with a supplied message and HTTP status code.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param status the HTTP status code that will be returned to the client.
* @since 2.0
*/
public WebApplicationException(final String message, final int status) {
this(message, null, status);
}
/**
* Construct a new instance with the supplied HTTP status
* and a default message generated from the HTTP status code and the associated HTTP status reason phrase.
*
* @param status the HTTP status code that will be returned to the client.
* @throws IllegalArgumentException if status is {@code null}.
*/
public WebApplicationException(final Response.Status status) {
this((Throwable) null, status);
}
/**
* Construct a new instance with the supplied message and HTTP status.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param status the HTTP status code that will be returned to the client.
* @throws IllegalArgumentException if status is {@code null}.
* @since 2.0
*/
public WebApplicationException(final String message, final Response.Status status) {
this(message, null, status);
}
/**
* Construct a new instance with the supplied root cause, default HTTP status code of 500
* and a default message generated from the HTTP status code and the associated HTTP status reason phrase.
*
* @param cause the underlying cause of the exception.
*/
public WebApplicationException(final Throwable cause) {
this(cause, Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Construct a new instance with the supplied message, root cause and default HTTP status code of 500.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param cause the underlying cause of the exception.
* @since 2.0
*/
public WebApplicationException(final String message, final Throwable cause) {
this(message, cause, Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Construct a new instance with the supplied root cause, response
* and a default message generated from the response's HTTP status code and the associated HTTP status reason phrase.
*
* @param response the response that will be returned to the client,
* a value of null will be replaced with an internal server error
* response (status code 500).
* @param cause the underlying cause of the exception.
*/
public WebApplicationException(final Throwable cause, final Response response) {
this(computeExceptionMessage(response), cause, response);
}
/**
* Construct a new instance with the supplied message, root cause and response.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param response the response that will be returned to the client,
* a value of null will be replaced with an internal server error
* response (status code 500).
* @param cause the underlying cause of the exception.
* @since 2.0
*/
public WebApplicationException(final String message, final Throwable cause, final Response response) {
super(message, cause);
if (response == null) {
this.response = Response.serverError().build();
} else {
this.response = response;
}
}
private static String computeExceptionMessage(Response response) {
final Response.StatusType statusInfo;
if (response != null) {
statusInfo = response.getStatusInfo();
} else {
statusInfo = Response.Status.INTERNAL_SERVER_ERROR;
}
return "HTTP " + statusInfo.getStatusCode() + ' ' + statusInfo.getReasonPhrase();
}
/**
* Construct a new instance with the supplied root cause, HTTP status code
* and a default message generated from the HTTP status code and the associated HTTP status reason phrase.
*
* @param status the HTTP status code that will be returned to the client.
* @param cause the underlying cause of the exception.
*/
public WebApplicationException(final Throwable cause, final int status) {
this(cause, Response.status(status).build());
}
/**
* Construct a new instance with the supplied message, root cause and HTTP status code.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param status the HTTP status code that will be returned to the client.
* @param cause the underlying cause of the exception.
* @since 2.0
*/
public WebApplicationException(final String message, final Throwable cause, final int status) {
this(message, cause, Response.status(status).build());
}
/**
* Construct a new instance with the supplied root cause, HTTP status code
* and a default message generated from the HTTP status code and the associated HTTP status reason phrase.
*
* @param status the HTTP status code that will be returned to the client.
* @param cause the underlying cause of the exception.
* @throws IllegalArgumentException if status is {@code null}.
*/
public WebApplicationException(final Throwable cause, final Response.Status status)
throws IllegalArgumentException {
this(cause, Response.status(status).build());
}
/**
* Construct a new instance with a the supplied message, root cause and HTTP status code.
*
* @param message the detail message (which is saved for later retrieval
* by the {@link #getMessage()} method).
* @param status the HTTP status code that will be returned to the client.
* @param cause the underlying cause of the exception.
* @since 2.0
*/
public WebApplicationException(final String message, final Throwable cause, final Response.Status status)
throws IllegalArgumentException {
this(message, cause, Response.status(status).build());
}
/**
* Get the HTTP response.
*
* @return the HTTP response.
*/
public Response getResponse() {
return response;
}
/**
* Validate that a {@link javax.ws.rs.core.Response} object has an expected HTTP response
* status code set.
*
* @param response response object.
* @param expectedStatus expected response status code.
* @return validated response object.
* @throws IllegalArgumentException if the response validation failed.
* @since 2.0
*/
static Response validate(final Response response, Response.Status expectedStatus) {
if (expectedStatus.getStatusCode() != response.getStatus()) {
throw new IllegalArgumentException(String.format("Invalid response status code. Expected [%d], was [%d].",
expectedStatus.getStatusCode(), response.getStatus()));
}
return response;
}
/**
* Validate that a {@link javax.ws.rs.core.Response} object has an expected HTTP response
* status code set.
*
* @param response response object.
* @param expectedStatusFamily expected response status code family.
* @return validated response object.
* @throws IllegalArgumentException if the response validation failed.
* @since 2.0
*/
static Response validate(final Response response, Response.Status.Family expectedStatusFamily) {
if (response.getStatusInfo().getFamily() != expectedStatusFamily) {
throw new IllegalArgumentException(String.format(
"Status code of the supplied response [%d] is not from the required status code family \"%s\".",
response.getStatus(), expectedStatusFamily));
}
return response;
}
}