Package io.vertx.reactivex.ext.web

Class RoutingContext

  • public class RoutingContext
extends Object
    Represents the context for the handling of a request in Vert.x-Web.

    A new instance is created for each HTTP request that is received in the Handler of the router.

    The same instance is passed to any matching request or failure handlers during the routing of the request or failure.

    The context provides access to the and and allows you to maintain arbitrary data that lives for the lifetime of the context. Contexts are discarded once they have been routed to the handler for the request.

    The context also provides access to the Session, cookies and body for the request, given the correct handlers in the application.

    If you use the internal error handler

    NOTE: This class has been automatically generated from the original non RX-ified interface using Vert.x codegen.

    • Field Detail

      • __TYPE_ARG

        public static final io.vertx.lang.rx.TypeArg<RoutingContext> __TYPE_ARG

    • Constructor Detail

      • RoutingContext

        public RoutingContext​(Object delegate)

    • Method Detail

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object

      • next

        public void next()
        Tell the router to route this context to the next matching route (if any). This method, if called, does not need to be called during the execution of the handler, it can be called some arbitrary time later, if required.

        If next is not called for a handler then the handler should make sure it ends the response or no response will be sent.

      • fail

        public void fail​(int statusCode)
        Fail the context with the specified status code.

        This will cause the router to route the context to any matching failure handlers for the request. If no failure handlers match It will trigger the error handler matching the status code. You can define such error handler with Router.errorHandler(int, io.vertx.core.Handler<io.vertx.reactivex.ext.web.RoutingContext>). If no error handler is not defined, It will send a default failure response with provided status code.

        Parameters:
        statusCode - the HTTP status code

      • fail

        public void fail​(Throwable throwable)
        Fail the context with the specified throwable and 500 status code.

        This will cause the router to route the context to any matching failure handlers for the request. If no failure handlers match It will trigger the error handler matching the status code. You can define such error handler with Router.errorHandler(int, io.vertx.core.Handler<io.vertx.reactivex.ext.web.RoutingContext>). If no error handler is not defined, It will send a default failure response with 500 status code.

        Parameters:
        throwable - a throwable representing the failure

      • fail

        public void fail​(int statusCode,
                 Throwable throwable)
        Fail the context with the specified throwable and the specified the status code.

        This will cause the router to route the context to any matching failure handlers for the request. If no failure handlers match It will trigger the error handler matching the status code. You can define such error handler with Router.errorHandler(int, io.vertx.core.Handler<io.vertx.reactivex.ext.web.RoutingContext>). If no error handler is not defined, It will send a default failure response with provided status code.

        Parameters:
        statusCode - the HTTP status code
        throwable - a throwable representing the failure

      • put

        public RoutingContext put​(String key,
                          Object obj)
        Put some arbitrary data in the context. This will be available in any handlers that receive the context.
        Parameters:
        key - the key for the data
        obj - the data
        Returns:
        a reference to this, so the API can be used fluently

      • get

        public <T> T get​(String key)
        Get some data from the context. The data is available in any handlers that receive the context.
        Parameters:
        key - the key for the data
        Returns:
        the data

      • get

        public <T> T get​(String key,
                 T defaultValue)
        Get some data from the context. The data is available in any handlers that receive the context.
        Parameters:
        key - the key for the data
        defaultValue - when the underlying data doesn't contain the key this will be the return value.
        Returns:
        the data

      • remove

        public <T> T remove​(String key)
        Remove some data from the context. The data is available in any handlers that receive the context.
        Parameters:
        key - the key for the data
        Returns:
        the previous data associated with the key

      • vertx

        public Vertx vertx()
        Returns:
        the Vert.x instance associated to the initiating Router for this context

      • mountPoint

        public String mountPoint()
        Returns:
        the mount point for this router. It will be null for a top level router. For a sub-router it will be the path at which the subrouter was mounted.

      • currentRoute

        public Route currentRoute()
        Returns:
        the current route this context is being routed through.

      • fileUploads

        public List<FileUpload> fileUploads()
        Returns:
        a list of FileUpload (if any) for the request. The context must have first been routed to a BodyHandler for this to work.

      • cancelAndCleanupFileUploads

        public void cancelAndCleanupFileUploads()
        Cancel all unfinished file upload in progress and delete all uploaded files.

      • session

        public Session session()
        Get the session. The context must have first been routed to a SessionHandler for this to be populated. Sessions live for a browser session, and are maintained by session cookies.
        Returns:
        the session.

      • isSessionAccessed

        public boolean isSessionAccessed()
        Whether the session() has been already called or not. This is usually used by the SessionHandler.
        Returns:
        true if the session has been accessed.

      • user

        public UserContext user()
        Control the user associated with this request. The user context allows accessing the security user object as well as perform authentication refreshes, logout and other operations.
        Returns:
        the user context

      • failure

        public Throwable failure()
        If the context is being routed to failure handlers after a failure has been triggered by calling fail(int) then this will return that throwable. It can be used by failure handlers to render a response, e.g. create a failure response page.
        Returns:
        the throwable used when signalling failure

      • statusCode

        public int statusCode()
        If the context is being routed to failure handlers after a failure has been triggered by calling fail(int) then this will return that status code. It can be used by failure handlers to render a response, e.g. create a failure response page. When the status code has not been set yet (it is undefined) its value will be -1.
        Returns:
        the status code used when signalling failure

      • getAcceptableContentType

        public String getAcceptableContentType()
        If the route specifies produces matches, e.g. produces `text/html` and `text/plain`, and the `accept` header matches one or more of these then this returns the most acceptable match.
        Returns:
        the most acceptable content type.

      • parsedHeaders

        public ParsedHeaderValues parsedHeaders()
        The headers:
        1. Accept
        2. Accept-Charset
        3. Accept-Encoding
        4. Accept-Language
        5. Content-Type
        Parsed into ParsedHeaderValue
        Returns:
        A container with the parsed headers.

      • addHeadersEndHandler

        public int addHeadersEndHandler​(Handler<Void> handler)
        Add a handler that will be called just before headers are written to the response. This gives you a hook where you can write any extra headers before the response has been written when it will be too late.
        Parameters:
        handler - the handler
        Returns:
        the id of the handler. This can be used if you later want to remove the handler.

      • addBodyEndHandler

        public int addBodyEndHandler​(Handler<Void> handler)
        Provides a handler that will be called after the last part of the body is written to the wire. The handler is called asynchronously of when the response has been received by the client. This provides a hook allowing you to do more operations once the request has been sent over the wire. Do not use this for resource cleanup as this handler might never get called (e.g. if the connection is reset).
        Parameters:
        handler - the handler
        Returns:
        the id of the handler. This can be used if you later want to remove the handler.

      • removeBodyEndHandler

        public boolean removeBodyEndHandler​(int handlerID)
        Remove a body end handler
        Parameters:
        handlerID - the id as returned from addBodyEndHandler(io.vertx.core.Handler<java.lang.Void>).
        Returns:
        true if the handler existed and was removed, false otherwise

      • failed

        public boolean failed()
        Returns:
        true if the context is being routed to failure handlers.

      • setAcceptableContentType

        public void setAcceptableContentType​(String contentType)
        Set the acceptable content type. Used by
        Parameters:
        contentType - the content type

      • reroute

        public void reroute​(String path)
        Restarts the current router with a new path and reusing the original method. All path parameters are then parsed and available on the params list. Query params will also be allowed and available.
        Parameters:
        path - the new http path.

      • reroute

        public void reroute​(HttpMethod method,
                    String path)
        Restarts the current router with a new method and path. All path parameters are then parsed and available on the params list. Query params will also be allowed and available.
        Parameters:
        method - the new http request
        path - the new http path.

      • acceptableLanguages

        public List<LanguageHeader> acceptableLanguages()
        Returns the languages for the current request. The languages are determined from the Accept-Language header and sorted on quality. When 2 or more entries have the same quality then the order used to return the best match is based on the lowest index on the original list. For example if a user has en-US and en-GB with same quality and this order the best match will be en-US because it was declared as first entry by the client.
        Returns:
        The best matched language for the request

      • preferredLanguage

        public LanguageHeader preferredLanguage()
        Helper to return the user preferred language. It is the same action as returning the first element of the acceptable languages.
        Returns:
        the users preferred locale.

      • pathParams

        public Map<String,​String> pathParams()
        Returns a map of named parameters as defined in path declaration with their actual values
        Returns:
        the map of named parameters

      • pathParam

        public String pathParam​(String name)
        Gets the value of a single path parameter
        Parameters:
        name - the name of parameter as defined in path declaration
        Returns:
        the actual value of the parameter or null if it doesn't exist

      • queryParams

        public MultiMap queryParams()
        Returns a map of all query parameters inside the query string
        The query parameters are lazily decoded: the decoding happens on the first time this method is called. If the query string is invalid it fails the context
        Returns:
        the multimap of query parameters

      • queryParam

        public List<String> queryParam​(String name)
        Gets the value of a single query parameter. For more info queryParams()
        Parameters:
        name - The name of query parameter
        Returns:
        The list of all parameters matching the parameter name. It returns an empty list if no query parameter with name was found

      • attachment

        public RoutingContext attachment​(String filename)
        Set Content-Disposition get to "attachment" with optional filename mime type.
        Parameters:
        filename - the filename for the attachment
        Returns:

      • redirect

        public Future<Void> redirect​(String url)
        Perform a 302 redirect to url. If a custom 3xx code is already defined, then that one will be preferred.

        The string "back" is special-cased to provide Referrer support, when Referrer is not present "/" is used.

        Examples:

        redirect('back'); redirect('/login'); redirect('http://google.com');

        Parameters:
        url - the target url
        Returns:

      • rxRedirect

        public Completable rxRedirect​(String url)
        Perform a 302 redirect to url. If a custom 3xx code is already defined, then that one will be preferred.

        The string "back" is special-cased to provide Referrer support, when Referrer is not present "/" is used.

        Examples:

        redirect('back'); redirect('/login'); redirect('http://google.com');

        Parameters:
        url - the target url
        Returns:

      • json

        public Future<Void> json​(Object json)
        Encode an Object to JSON and end the request. When Content-Type is not set then correct Content-Type will be applied to the response
        Parameters:
        json - the json
        Returns:
        a future to handle the end of the request

      • rxJson

        public Completable rxJson​(Object json)
        Encode an Object to JSON and end the request. When Content-Type is not set then correct Content-Type will be applied to the response
        Parameters:
        json - the json
        Returns:
        a future to handle the end of the request

      • is

        public boolean is​(String type)
        Check if the incoming request contains the "Content-Type" get field, and it contains the give mime `type`. If there is no request body, `false` is returned. If there is no content type, `false` is returned. Otherwise, it returns true if the `type` that matches.

        Examples:

        // With Content-Type: text/html; charset=utf-8 is("html"); // => true is("text/html"); // => true

        // When Content-Type is application/json is("application/json"); // => true is("html"); // => false

        Parameters:
        type - content type
        Returns:
        The most close value

      • isFresh

        public boolean isFresh()
        Check if the request is fresh, aka Last-Modified and/or the ETag still match.
        Returns:
        true if content is fresh according to the cache.

      • etag

        public RoutingContext etag​(String etag)
        Set the ETag of a response. This will normalize the quotes if necessary.

        etag('md5hashsum'); etag('"md5hashsum"'); ('W/"123456789"');

        Parameters:
        etag - the etag value
        Returns:

      • lastModified

        public RoutingContext lastModified​(String instant)
        Set the Last-Modified date using a String.
        Parameters:
        instant - the last modified instant
        Returns:

      • end

        public Future<Void> end​(String chunk)
        Shortcut to the response end.
        Parameters:
        chunk - a chunk
        Returns:
        future

      • rxEnd

        public Completable rxEnd​(String chunk)
        Shortcut to the response end.
        Parameters:
        chunk - a chunk
        Returns:
        future

      • end

        public Future<Void> end​(Buffer buffer)
        Shortcut to the response end.
        Parameters:
        buffer - a chunk
        Returns:
        future

      • rxEnd

        public Completable rxEnd​(Buffer buffer)
        Shortcut to the response end.
        Parameters:
        buffer - a chunk
        Returns:
        future

      • end

        public Future<Void> end()
        Shortcut to the response end.
        Returns:
        future

      • rxEnd

        public Completable rxEnd()
        Shortcut to the response end.
        Returns:
        future

      • data

        public <T> Map<String,​T> data()
        Returns:
        all the context data as a map

      • addEndHandler

        public int addEndHandler​(Handler<AsyncResult<Void>> handler)
        Add an end handler for the request/response context. This will be called when the response is disposed or an exception has been encountered to allow consistent cleanup. The handler is called asynchronously of when the response has been received by the client.
        Parameters:
        handler - the handler that will be called with either a success or failure result.
        Returns:
        the id of the handler. This can be used if you later want to remove the handler.

      • queryParams

        public MultiMap queryParams​(Charset encoding)
        Always decode the current query string with the given encoding. The decode result is never cached. Callers to this method are expected to cache the result if needed. Usually users should use queryParams(). This method is only useful when the requests without content type (GET requests as an example) expect that query params are in the ASCII format ISO-5559-1.
        Parameters:
        encoding - a non null character set.
        Returns:
        the multimap of query parameters

      • lastModified

        public RoutingContext lastModified​(java.time.Instant instant)
        Set the Last-Modified date using a Instant.
        Parameters:
        instant - the last modified instant
        Returns: