projects / thirdparty / squid.git / blame
| Commit | Line | Data |
|---|---|---|
| 8822ebee AR |
1 | /* |
| 2 | * $Id$ | |
| 3 | * | |
| 4 | * DEBUG: section 16 Cache Manager API | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef SQUID_MGR_FORWARDER_H | |
| 9 | #define SQUID_MGR_FORWARDER_H | |
| 10 | ||
| 11 | #include "base/AsyncJob.h" | |
| 12 | #include "mgr/ActionParams.h" | |
| 13 | #include <map> | |
| 14 | ||
| 15 | ||
| 16 | class CommCloseCbParams; | |
| 17 | class HttpRequest; | |
| 18 | class StoreEntry; | |
| 19 | class ErrorState; | |
| 20 | ||
| 21 | namespace Mgr | |
| 22 | { | |
| 23 | ||
| 24 | /** Forwards a single client cache manager request to Coordinator. | |
| 25 | * Waits for an ACK from Coordinator while holding the Store entry. | |
| 26 | * Fills the store entry with an error response if forwarding fails. | |
| 27 | */ | |
| 28 | class Forwarder: public AsyncJob | |
| 29 | { | |
| 30 | public: | |
| 31 | Forwarder(int aFd, const ActionParams &aParams, HttpRequest* aRequest, | |
| d9fc6862 | 32 | StoreEntry* anEntry); |
| 8822ebee AR |
33 | virtual ~Forwarder(); |
| 34 | ||
| 35 | /// finds and calls the right Forwarder upon Coordinator's response | |
| 36 | static void HandleRemoteAck(unsigned int requestId); | |
| 37 | ||
| 38 | /* has-to-be-public AsyncJob API */ | |
| 39 | virtual void callException(const std::exception& e); | |
| 40 | ||
| 41 | protected: | |
| 42 | /* AsyncJob API */ | |
| 43 | virtual void start(); | |
| 44 | virtual void swanSong(); | |
| 45 | virtual bool doneAll() const; | |
| 46 | ||
| 47 | private: | |
| 48 | void handleRemoteAck(); | |
| 49 | static void RequestTimedOut(void* param); | |
| 50 | void requestTimedOut(); | |
| 51 | void quitOnError(const char *reason, ErrorState *error); | |
| 52 | void noteCommClosed(const CommCloseCbParams& params); | |
| 53 | void removeTimeoutEvent(); | |
| 54 | static AsyncCall::Pointer DequeueRequest(unsigned int requestId); | |
| 55 | static void Abort(void* param); | |
| 56 | void close(); | |
| 57 | ||
| 58 | private: | |
| 59 | ActionParams params; ///< action parameters to pass to the other side | |
| 60 | HttpRequest* request; ///< HTTP client request for detailing errors | |
| 61 | StoreEntry* entry; ///< Store entry expecting the response | |
| 62 | int fd; ///< HTTP client connection descriptor | |
| 63 | unsigned int requestId; ///< request id | |
| 64 | AsyncCall::Pointer closer; ///< comm_close handler for the HTTP connection | |
| 65 | ||
| 66 | /// maps requestId to Forwarder::handleRemoteAck callback | |
| 67 | typedef std::map<unsigned int, AsyncCall::Pointer> RequestsMap; | |
| 68 | static RequestsMap TheRequestsMap; ///< pending Coordinator requests | |
| 69 | ||
| 70 | static unsigned int LastRequestId; ///< last requestId used | |
| 71 | ||
| 72 | CBDATA_CLASS2(Forwarder); | |
| 73 | }; | |
| 74 | ||
| 75 | } // namespace Mgr | |
| 76 | ||
| 77 | #endif /* SQUID_MGR_FORWARDER_H */ |