7 #include "paxos_protocol.h"
13 virtual void paxos_commit(unsigned instance, const std::string &v) = 0;
14 virtual ~paxos_change() {};
26 prop_t n_h; // number of the highest proposal seen in a prepare
27 prop_t n_a; // number of highest proposal accepted
28 std::string v_a; // value of highest proposal accepted
29 unsigned instance_h; // number of the highest instance we have decided
30 std::map<unsigned,std::string> values; // vals of each instance
32 void commit_wo(unsigned instance, std::string v);
33 paxos_protocol::status preparereq(paxos_protocol::prepareres &r,
34 std::string src, paxos_protocol::preparearg a);
35 paxos_protocol::status acceptreq(bool &r, std::string src,
36 paxos_protocol::acceptarg a);
37 paxos_protocol::status decidereq(int &r, std::string src,
38 paxos_protocol::decidearg a);
43 acceptor(class paxos_change *cfg, bool _first, std::string _me,
46 void commit(unsigned instance, std::string v);
47 unsigned instance() { return instance_h; }
48 std::string value(unsigned instance) { return values[instance]; }
50 void restore(std::string);
51 rpcs *get_rpcs() { return pxs; };
52 prop_t get_n_h() { return n_h; };
53 unsigned get_instance_h() { return instance_h; };
56 extern bool isamember(std::string m, const std::vector<std::string> &nodes);
57 extern std::string print_members(const std::vector<std::string> &nodes);
72 prop_t my_n; // number of the last proposal used in this instance
75 bool prepare(unsigned instance, std::vector<std::string> &accepts,
76 std::vector<std::string> nodes,
78 void accept(unsigned instance, std::vector<std::string> &accepts,
79 std::vector<std::string> nodes, std::string v);
80 void decide(unsigned instance, std::vector<std::string> accepts,
85 bool majority(const std::vector<std::string> &l1, const std::vector<std::string> &l2);
89 proposer(class paxos_change *cfg, class acceptor *_acceptor, std::string _me);
91 bool run(int instance, std::vector<std::string> cnodes, std::string v);
93 void breakpoint(int b);