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comparison Framework/Messages/IObserver.h @ 1048:f6be9412e42a

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cleaning up IObservable.h
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 10 Oct 2019 14:11:52 +0200
parents 92a043b8e431
children e713f1a99861 ca2058bd74ef
comparison
equal deleted inserted replaced
1047:efc5b62b9539 1048:f6be9412e42a
20 20
21 21
22 #pragma once 22 #pragma once
23 23
24 #include "MessageBroker.h" 24 #include "MessageBroker.h"
25 #include "IMessage.h"
26
27 #include <Core/Toolbox.h>
28 25
29 namespace OrthancStone 26 namespace OrthancStone
30 { 27 {
31 class IObserver : public boost::noncopyable 28 class IObserver : public boost::noncopyable
32 { 29 {
33 private: 30 private:
34 MessageBroker& broker_; 31 MessageBroker& broker_;
35 // the following is a UUID that is used to disambiguate different observers 32 // the following is a UUID that is used to disambiguate different observers
36 // that may have the same address 33 // that may have the same address
37 char fingerprint_[37]; 34 char fingerprint_[37];
35
38 public: 36 public:
39 IObserver(MessageBroker& broker) 37 IObserver(MessageBroker& broker);
40 : broker_(broker)
41 , fingerprint_()
42 {
43 // we store the fingerprint_ as a char array to avoid problems when
44 // reading it in a deceased object.
45 // remember this is panic-level code to track zombie object usage
46 std::string fingerprint = Orthanc::Toolbox::GenerateUuid();
47 const char* fingerprintRaw = fingerprint.c_str();
48 memcpy(fingerprint_, fingerprintRaw, 37);
49 broker_.Register(*this);
50 }
51 38
52 virtual ~IObserver() 39 virtual ~IObserver();
53 {
54 try
55 {
56 LOG(TRACE) << "IObserver(" << std::hex << this << std::dec << ")::~IObserver : fingerprint_ == " << fingerprint_;
57 const char* deadMarker = "deadbeef-dead-dead-0000-0000deadbeef";
58 ORTHANC_ASSERT(strlen(deadMarker) == 36);
59 memcpy(fingerprint_, deadMarker, 37);
60 broker_.Unregister(*this);
61 }
62 catch (const Orthanc::OrthancException& e)
63 {
64 if (e.HasDetails())
65 {
66 LOG(ERROR) << "OrthancException in ~IObserver: " << e.What() << " Details: " << e.GetDetails();
67 }
68 else
69 {
70 LOG(ERROR) << "OrthancException in ~IObserver: " << e.What();
71 }
72 }
73 catch (const std::exception& e)
74 {
75 LOG(ERROR) << "std::exception in ~IObserver: " << e.what();
76 }
77 catch (...)
78 {
79 LOG(ERROR) << "Unknown exception in ~IObserver";
80 }
81 }
82 40
83 const char* GetFingerprint() const 41 const char* GetFingerprint() const
84 { 42 {
85 return fingerprint_; 43 return fingerprint_;
86 } 44 }
87 45
88 bool DoesFingerprintLookGood() const 46 bool DoesFingerprintLookGood() const;
89 {
90 for (size_t i = 0; i < 36; ++i) {
91 bool ok = false;
92 if (fingerprint_[i] >= 'a' && fingerprint_[i] <= 'f')
93 ok = true;
94 if (fingerprint_[i] >= '0' && fingerprint_[i] <= '9')
95 ok = true;
96 if (fingerprint_[i] == '-')
97 ok = true;
98 if (!ok)
99 return false;
100 }
101 return fingerprint_[36] == 0;
102 }
103 47
104 MessageBroker& GetBroker() const 48 MessageBroker& GetBroker() const
105 { 49 {
106 return broker_; 50 return broker_;
107 } 51 }