Poco::OSP::Web

class WebServerDispatcher

Library: OSP/Web
Package: Web
Header: Poco/OSP/Web/WebServerDispatcher.h

Description

A WebServerDispatcher is some sort of meta HTTPRequestHandlerFactory. It groups together several other HTTPRequestHandlerFactory instances and distributes requests to them according to the registered request handler extension points (see the WebServerExtensionPoint class).

Inheritance

Direct Base Classes: Poco::OSP::Service

All Base Classes: Poco::OSP::Service, Poco::RefCountedObject

Member Summary

Member Functions: addFilter, addVirtualPath, authService, authorize, cleanPath, findFilter, findResource, formatMessage, getCachedResource, handleRequest, htmlize, isA, listVirtualPaths, logRequest, mapPath, normalizePath, onBundleStopping, removeBundle, removeFilter, removeVirtualPath, sendBadRequest, sendForbidden, sendFound, sendInternalError, sendMethodNotAllowed, sendNotAuthorized, sendNotFound, sendResource, sendResponse, shouldCompressMediaType, threadPool, type, virtualPathMappings

Inherited Functions: duplicate, isA, referenceCount, release, type

Nested Classes

struct PathInfo

 more...

struct PathSecurity

Security attributes for a registered path. more...

struct VirtualPath

A VirtualPath struct is used to specify a path mapping for a bundle. more...

Types

PathInfoMap

typedef std::map < std::string, PathInfo > PathInfoMap;

PathMap

typedef std::map < std::string, VirtualPath > PathMap;

PatternVec

typedef std::vector < VirtualPath > PatternVec;

RegularExpressionPtr

typedef Poco::SharedPtr < Poco::RegularExpression > RegularExpressionPtr;

RequestHandlerFactoryPtr

typedef Poco::SharedPtr < Poco::Net::HTTPRequestHandlerFactory > RequestHandlerFactoryPtr;

WebFilterFactoryPtr

typedef Poco::SharedPtr < WebFilterFactory > WebFilterFactoryPtr;

WebFilterPtr

typedef Poco::SharedPtr < WebFilter > WebFilterPtr;

Enumerations

SpecializationMode

A bundle that registers a resource mapping or request handler for a certain path can specify whether other bundles can register subdirectories of this directory.

SM_NONE = 0

No one can register subdirectories

SM_OWNER = 1

Only the owner bundle can register subdirectories

SM_ALL = 2

Everyone can register subdirectories

Constructors

WebServerDispatcher

WebServerDispatcher(
    BundleContext::Ptr pContext,
    MediaTypeMapper::Ptr pMediaTypeMapper,
    const std::string & authServiceName,
    bool compressResponses,
    const std::set < std::string > & compressedMediaTypes,
    bool cacheResources = false
);

Creates the WebServerDispatcher.

Destructor

~WebServerDispatcher virtual

virtual ~WebServerDispatcher();

Destroys the WebServerDispatcher.

Member Functions

addFilter

void addFilter(
    const std::string & mediaType,
    WebFilterFactoryPtr pFilterFactory
);

Adds a filter factory for the given media type.

Throws a Poco::ExistsException if a filter already exists for the given mediaType.

addVirtualPath

void addVirtualPath(
    const VirtualPath & virtualPath
);

Adds the given VirtualPath to the path mapping table.

Throws an ExistsException if a mapping for the given path already exists.

handleRequest

void handleRequest(
    Poco::Net::HTTPServerRequest & request,
    Poco::Net::HTTPServerResponse & response,
    bool secure
);

Handles the given request. Secure specifies whether the request has been sent over a secure (HTTPS) connection.

isA virtual

virtual bool isA(
    const std::type_info & otherType
) const;

See also: Poco::OSP::Service::isA()

listVirtualPaths

void listVirtualPaths(
    PathInfoMap & paths
) const;

Returns a map containing all virtual paths (key) that are not patterns and not marked as hidden, and their descriptions (value).

removeBundle

void removeBundle(
    Bundle::ConstPtr pBundle
);

Removes all mappings from the given bundle.

removeFilter

void removeFilter(
    const std::string & mediaType
);

Removes the filter for the given mediaType.

removeVirtualPath

void removeVirtualPath(
    const std::string & virtualPath
);

Removes a path mapping from the path mapping table.

Throws a NotFoundException if the given path does not exist.

threadPool inline

Poco::ThreadPool & threadPool();

Returns the thread pool for use by Poco::Net::HTTPServer.

type virtual

virtual const std::type_info & type() const;

See also: Poco::OSP::Service::type()

virtualPathMappings

void virtualPathMappings(
    PathMap & mappings
) const;

Returns all path mappings. This member function creates a full copy of the internal path map.

authService protected

Poco::OSP::Auth::AuthService::Ptr authService() const;

Returns a pointer to the auth service, if it is available, or null otherwise.

authorize protected

bool authorize(
    Poco::Net::HTTPServerRequest & request,
    const VirtualPath & vPath,
    std::string & username
) const;

Authorizes the request.

cleanPath protected static

static bool cleanPath(
    std::string & path
);

Removes unnecessary characters (such as trailing dots) from the path and checks for illegal or dangerous characters.

Returns true if the path is okay, false otherwise.

findFilter protected

WebFilterPtr findFilter(
    const std::string & mediaType
);

Returns a WebFilter instance for the given mediaType, or a null pointer if no WebFilterFactory has been registered for the given mediaType.

findResource protected

std::istream * findResource(
    Bundle::ConstPtr pBundle,
    const std::string & base,
    const std::string & res,
    const std::string & index,
    std::string & mediaType,
    std::string & resolvedPath,
    bool canCache
) const;

Returns a resource stream for the given path, or a null pointer if no matching resource exists.

formatMessage protected

std::string formatMessage(
    const std::string & messageId,
    const std::string & arg1 = std::string (),
    const std::string & arg2 = std::string ()
);

Reads a message from the bundle.properties resource and replaces placeholders $1 and $2 with arg1 and arg2, respectively.

getCachedResource protected

std::istream * getCachedResource(
    Bundle::ConstPtr pBundle,
    const std::string & path,
    bool canCache
) const;

Returns a resource stream for the given path, or a null pointer if no matching resource exists. If caching is enabled both globally and for the specific resource, attempts to cache the resource.

htmlize protected static

static std::string htmlize(
    const std::string & str
);

Returns a HTML-ized version of the given string.

logRequest protected

void logRequest(
    const Poco::Net::HTTPServerRequest & request,
    const Poco::Net::HTTPServerResponse & response,
    const std::string & username
);

Logs the HTTP request.

mapPath protected

const VirtualPath & mapPath(
    const std::string & path,
    const std::string & method
) const;

Maps a URI to a VirtualPath.

Throws a NotFoundException if no suitable mapping can be found.

normalizePath protected static

static std::string normalizePath(
    const std::string & path
);

Creates normalized path for internal storage. The normalized path always starts and ends with a slash.

onBundleStopping protected

void onBundleStopping(
    const void * pSender,
    BundleEvent & ev
);

When a bundle is stopped, all of its request handlers and mappings are automatically disabled.

sendBadRequest protected

void sendBadRequest(
    Poco::Net::HTTPServerRequest & request,
    const std::string & message
);

Sends a 404 Not Found error response.

sendForbidden protected

void sendForbidden(
    Poco::Net::HTTPServerRequest & request,
    const std::string & path
);

Sends a 403 Forbidden error response.

sendFound protected

void sendFound(
    Poco::Net::HTTPServerRequest & request,
    const std::string & path
);

Sends a 302 Found response.

sendInternalError protected

void sendInternalError(
    Poco::Net::HTTPServerRequest & request,
    const std::string & message
);

Sends a 500 Internal Server Error response.

sendMethodNotAllowed protected

void sendMethodNotAllowed(
    Poco::Net::HTTPServerRequest & request,
    const std::string & message
);

Sends a 405 Method Not Allowed error response.

sendNotAuthorized protected

void sendNotAuthorized(
    Poco::Net::HTTPServerRequest & request,
    const std::string & path
);

Sends a 401 Unauthorized error response.

sendNotFound protected

void sendNotFound(
    Poco::Net::HTTPServerRequest & request,
    const std::string & path
);

Sends a 404 Not Found error response.

sendResource protected

void sendResource(
    Poco::Net::HTTPServerRequest & request,
    const std::string & path,
    const std::string & vpath,
    const std::string & resPath,
    const std::string & resBase,
    const std::string & index,
    Bundle::ConstPtr pBundle,
    bool canCache
);

Sends a bundle resource as response.

sendResponse protected

void sendResponse(
    Poco::Net::HTTPServerRequest & request,
    Poco::Net::HTTPResponse::HTTPStatus status,
    const std::string & message
);

Sends a standard status/error response.

shouldCompressMediaType protected

bool shouldCompressMediaType(
    const std::string & mediaType
) const;

Returns true if and only if content with the given media type should be compressed.

Variables

SERVICE_NAME static

static const std::string SERVICE_NAME;

Applied Informatics C++ Libraries and Tools 2014.1B-world
Copyright © 2014, Applied Informatics Software Engineering GmbH (and Contributors)