com.vaadin.flow.internal

Interface DevModeHandler

All Superinterfaces:

RequestHandler, Serializable

All Known Implementing Classes:

DevModeHandlerImpl

public interface DevModeHandler
extends RequestHandler

Method Summary

Modifier and Type	Method and Description
String	getFailedOutput() Return webpack console output when a compilation error happened.
boolean	isDevModeRequest(javax.servlet.http.HttpServletRequest request) Returns true if it's a request that should be handled by webpack.
HttpURLConnection	prepareConnection(String path, String method) Prepare a HTTP connection against webpack-dev-server.
boolean	serveDevModeRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Serve a file by proxying to webpack.
void	stop() Stop the dev-server.

Methods inherited from interface com.vaadin.flow.server.RequestHandler

handleRequest

Method Detail

getFailedOutput

String getFailedOutput()

Return webpack console output when a compilation error happened.

Returns:

console output if error or null otherwise.

prepareConnection

HttpURLConnection prepareConnection(String path,
                                    String method)
                             throws IOException

Prepare a HTTP connection against webpack-dev-server.

Parameters:

path - the file to request, needs to be safe

method - the http method to use

Returns:

the connection

Throws:

IOException - on connection error

isDevModeRequest

boolean isDevModeRequest(javax.servlet.http.HttpServletRequest request)

Returns true if it's a request that should be handled by webpack.

Parameters:

request - the servlet request

Returns:

true if the request should be forwarded to webpack

serveDevModeRequest

boolean serveDevModeRequest(javax.servlet.http.HttpServletRequest request,
                            javax.servlet.http.HttpServletResponse response)
                     throws IOException

Serve a file by proxying to webpack.

Parameters:

request - the servlet request

response - the servlet response

Returns:

false if webpack returned a not found, true otherwise

Throws:

IOException - in the case something went wrong like connection refused

stop

void stop()

Stop the dev-server.