src/adaptation/AccessCheck.h

   1 #ifndef SQUID_ADAPTATION__ACCESS_CHECK_H
   2 #define SQUID_ADAPTATION__ACCESS_CHECK_H
   3
   4 #include "ICAP/AsyncJob.h"
   5 #include "adaptation/Elements.h"
   6 #include "adaptation/forward.h"
   7
   8 class HttpRequest;
   9 class HttpReply;
  10
  11 namespace Adaptation {
  12
  13 class AccessRule;
  14
  15 // checks adaptation_access rules to find a matching adaptation service
  16 class AccessCheck: public virtual AsyncJob
  17 {
  18 public:
  19     typedef void AccessCheckCallback(ServicePointer match, void *data);
  20
  21     // use this to start async ACL checks; returns true if started
  22     static bool Start(Method method, VectPoint vp, HttpRequest *req,
  23         HttpReply *rep, AccessCheckCallback *cb, void *cbdata);
  24
  25 protected:
  26     // use Start to start adaptation checks
  27     AccessCheck(Method, VectPoint, HttpRequest *, HttpReply *, AccessCheckCallback *, void *);
  28     ~AccessCheck();
  29
  30 private:
  31     Method method;
  32     VectPoint point;
  33     HttpRequest *req;
  34     HttpReply *rep;
  35     AccessCheckCallback *callback;
  36     void *callback_data;
  37     ACLChecklist *acl_checklist;
  38
  39     typedef int Candidate;
  40     typedef Vector<Candidate> Candidates;
  41     Candidates candidates;
  42     Candidate topCandidate() { return *candidates.begin(); }
  43
  44     void do_callback();
  45     ServicePointer findBestService(AccessRule &r, bool preferUp);
  46     bool done;
  47
  48 public:
  49     void check();
  50     void checkCandidates();
  51     static void AccessCheckCallbackWrapper(int, void*);
  52 #if 0
  53     static EVH AccessCheckCallbackEvent;
  54 #endif
  55     void noteAnswer(int answer);
  56
  57 //AsyncJob virtual methods
  58     virtual bool doneAll() const { return AsyncJob::doneAll() && done;}
  59
  60 private:
  61     CBDATA_CLASS2(AccessCheck);
  62 };
  63
  64 } // namespace Adaptation
  65
  66 #endif /* SQUID_ADAPTATION__ACCESS_CHECK_H */