Add receive_begin_ballot
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63797e0631
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@ -111,6 +111,14 @@ namespace paxos
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void Legislator::receive_enough_last_vote()
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{
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int ballot = ledger.last_tried();
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std::string ballot_str = std::to_string(ballot);
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log(config_.name + " has received enough LastVote("
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+ ballot_str + ", v"
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+ ")", green);
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Vote max_vote;
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max_vote.ballot_id = -1;
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for (auto legislator_vote_pair : quorum_previous_votes)
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@ -120,11 +128,50 @@ namespace paxos
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max_vote = current_vote;
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}
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//find d to satisfy B3
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//send BeginBallot to the quorum
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Decree decree;
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if (max_vote.ballot_id != -1)
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decree = max_vote.decree;
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else
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decree.decree = ballot;
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send_begin_ballot(ballot, decree);
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}
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void Legislator::receive_begin_ballot(int ballot, int decree_id)
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void Legislator::send_begin_ballot(int ballot, Decree decree)
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{
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std::string ballot_string = std::to_string(ballot);
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std::string decree_string = std::to_string(decree.decree);
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Message message;
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message.set_method("BeginBallot");
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message.add_header("sender", self->config_.name);
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message.add_header("ballot", ballot_string);
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message.add_header("decree", decree_string);
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for (auto legislator_vote_pair : quorum_previous_votes)
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{
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std::string legislator = legislator_vote_pair.first;
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SendEW::send_message(message, legislators[legislator]);
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}
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}
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void Legislator::receive_begin_ballot(Message message)
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{
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std::string ballot_string = *message.get_header("ballot");
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std::string decree_string = *message.get_header("decree");
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std::string sender = *message.get_header("sender");
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log(config_.name + " has received BeginBallot("
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+ ballot_string + ", " + decree_string
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+ ") from " + sender, green);
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int ballot = std::stoi(ballot_string);
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int decree = std::stoi(decree_string);
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receive_begin_ballot(ballot, decree, sender);
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}
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void Legislator::receive_begin_ballot(int ballot, int decree_id,
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std::string sender)
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{
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if (ballot != ledger.next_bal())
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return;
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@ -135,8 +182,7 @@ namespace paxos
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vote.decree = decree;
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ledger.set_prev_vote(vote);
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decree = decree;
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//XXX send Voted
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sender = sender;
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}
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void Legislator::handle_message(Message message)
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@ -146,5 +192,7 @@ namespace paxos
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receive_next_ballot(message);
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else if (method == "LastVote")
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receive_last_vote(message);
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else if (method == "BeginBallot")
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receive_begin_ballot(message);
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}
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}
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@ -3,6 +3,7 @@
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#include "ledger.hh"
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#include "message/message.hh"
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#include "vote.hh"
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#include "law/decree.hh"
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#include <unordered_map>
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#include <unordered_set>
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@ -24,7 +25,9 @@ namespace paxos
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void receive_last_vote(Message message);
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void receive_enough_last_vote();
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void receive_begin_ballot(int ballot, int decree);
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void send_begin_ballot(int ballot, Decree decree);
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void receive_begin_ballot(Message message);
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void receive_begin_ballot(int ballot, int decree, std::string sender);
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void handle_message(Message message);
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