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_INQUIRER_H | |
| 9 | #define SQUID_MGR_INQUIRER_H | |
| 10 | ||
| 11 | #include "base/AsyncJobCalls.h" | |
| 12 | #include "base/AsyncJob.h" | |
| 13 | #include "ipc/StrandCoords.h" | |
| 14 | #include "MemBuf.h" | |
| 15 | #include "mgr/Action.h" | |
| 16 | #include "mgr/Request.h" | |
| 17 | #include <map> | |
| 18 | ||
| 19 | class CommIoCbParams; | |
| 20 | class CommCloseCbParams; | |
| 21 | ||
| 22 | namespace Mgr | |
| 23 | { | |
| 24 | ||
| 25 | /// Coordinator's job that sends a cache manage request to each strand, | |
| 26 | /// aggregating individual strand responses and dumping the result if needed | |
| 27 | class Inquirer: public AsyncJob | |
| 28 | { | |
| 29 | public: | |
| 30 | Inquirer(Action::Pointer anAction, int aFd, const Request &aCause, | |
| 31 | const Ipc::StrandCoords &coords); | |
| 32 | virtual ~Inquirer(); | |
| 33 | ||
| 34 | /// finds and calls the right Inquirer upon strand's response | |
| 35 | static void HandleRemoteAck(const Mgr::Response& response); | |
| 36 | ||
| 37 | protected: | |
| 38 | /* AsyncJob API */ | |
| 39 | virtual void start(); | |
| 40 | virtual void swanSong(); | |
| 41 | virtual bool doneAll() const; | |
| 42 | virtual const char *status() const; | |
| 43 | ||
| 44 | private: | |
| 45 | typedef UnaryMemFunT<Inquirer, Response, const Response&> HandleAckDialer; | |
| 46 | ||
| 47 | void inquire(); | |
| 48 | void noteWroteHeader(const CommIoCbParams& params); | |
| 49 | void noteCommClosed(const CommCloseCbParams& params); | |
| 50 | ||
| 51 | void handleRemoteAck(const Response& response); | |
| 52 | ||
| 53 | static AsyncCall::Pointer DequeueRequest(unsigned int requestId); | |
| 54 | ||
| 55 | static void RequestTimedOut(void* param); | |
| 56 | void requestTimedOut(); | |
| 57 | void removeTimeoutEvent(); | |
| 58 | ||
| 59 | void close(); | |
| 60 | void removeCloseHandler(); | |
| 61 | ||
| 62 | private: | |
| 63 | Action::Pointer aggrAction; //< action to aggregate | |
| 64 | ||
| 65 | Request cause; ///< cache manager request received from HTTP client | |
| 66 | int fd; ///< HTTP client socket descriptor | |
| 67 | ||
| 68 | Ipc::StrandCoords strands; ///< all strands we want to query, in order | |
| 69 | Ipc::StrandCoords::const_iterator pos; ///< strand we should query now | |
| 70 | ||
| 71 | unsigned int requestId; ///< ID of our outstanding request to strand | |
| 72 | AsyncCall::Pointer writer; ///< comm_write callback | |
| 73 | AsyncCall::Pointer closer; ///< comm_close handler | |
| 74 | const double timeout; ///< number of seconds to wait for strand response | |
| 75 | ||
| 76 | /// maps requestId to Inquirer::handleRemoteAck callback | |
| 77 | typedef std::map<unsigned int, AsyncCall::Pointer> RequestsMap; | |
| 78 | static RequestsMap TheRequestsMap; ///< pending strand requests | |
| 79 | ||
| 80 | static unsigned int LastRequestId; ///< last requestId used | |
| 81 | ||
| 82 | CBDATA_CLASS2(Inquirer); | |
| 83 | }; | |
| 84 | ||
| 85 | } // namespace Mgr | |
| 86 | ||
| 87 | #endif /* SQUID_MGR_INQUIRER_H */ |