projects / thirdparty / squid.git / blame
| Commit | Line | Data |
|---|---|---|
| 51ea0904 | 1 | /* |
| bbc27441 | 2 | * Copyright (C) 1996-2014 The Squid Software Foundation and contributors |
| 51ea0904 | 3 | * |
| bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
| 5 | * contributions from numerous individuals and organizations. | |
| 6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
| 51ea0904 CT |
7 | */ |
| 8 | ||
| bbc27441 AJ |
9 | /* DEBUG: section 54 Interprocess Communication */ |
| 10 | ||
| 51ea0904 CT |
11 | #ifndef SQUID_IPC_FORWARDER_H |
| 12 | #define SQUID_IPC_FORWARDER_H | |
| 13 | ||
| 14 | #include "base/AsyncJob.h" | |
| c6983ec7 | 15 | #include "cbdata.h" |
| 51ea0904 | 16 | #include "ipc/Request.h" |
| c6983ec7 FC |
17 | #include "mgr/ActionParams.h" |
| 18 | ||
| 51ea0904 CT |
19 | #include <map> |
| 20 | ||
| 51ea0904 CT |
21 | namespace Ipc |
| 22 | { | |
| 23 | ||
| 24 | /** Forwards a worker request to coordinator. | |
| 25 | * Waits for an ACK from Coordinator | |
| 26 | * Send the data unit with an error response if forwarding fails. | |
| 27 | */ | |
| 28 | class Forwarder: public AsyncJob | |
| 29 | { | |
| 30 | public: | |
| 31 | Forwarder(Request::Pointer aRequest, double aTimeout); | |
| 32 | virtual ~Forwarder(); | |
| 33 | ||
| 34 | /// finds and calls the right Forwarder upon Coordinator's response | |
| 35 | static void HandleRemoteAck(unsigned int requestId); | |
| 36 | ||
| 37 | /* has-to-be-public AsyncJob API */ | |
| 38 | virtual void callException(const std::exception& e); | |
| 39 | ||
| 40 | protected: | |
| 41 | /* AsyncJob API */ | |
| 42 | virtual void start(); | |
| 43 | virtual void swanSong(); | |
| 44 | virtual bool doneAll() const; | |
| 45 | ||
| 46 | virtual void cleanup(); ///< perform cleanup actions | |
| 47 | virtual void handleError(); | |
| 48 | virtual void handleTimeout(); | |
| 49 | virtual void handleException(const std::exception& e); | |
| 50 | virtual void handleRemoteAck(); | |
| 51 | ||
| 52 | private: | |
| 53 | static void RequestTimedOut(void* param); | |
| 54 | void requestTimedOut(); | |
| 55 | void removeTimeoutEvent(); | |
| 56 | static AsyncCall::Pointer DequeueRequest(unsigned int requestId); | |
| 57 | ||
| 58 | protected: | |
| 59 | Request::Pointer request; | |
| 60 | const double timeout; ///< response wait timeout in seconds | |
| 61 | ||
| 62 | /// maps request->id to Forwarder::handleRemoteAck callback | |
| 63 | typedef std::map<unsigned int, AsyncCall::Pointer> RequestsMap; | |
| 64 | static RequestsMap TheRequestsMap; ///< pending Coordinator requests | |
| 65 | ||
| 66 | static unsigned int LastRequestId; ///< last requestId used | |
| 67 | ||
| 68 | CBDATA_CLASS2(Forwarder); | |
| 69 | }; | |
| 70 | ||
| 71 | } // namespace Ipc | |
| 72 | ||
| 73 | #endif /* SQUID_IPC_FORWARDER_H */ |