src/adaptation/AccessCheck.h

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