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Introduced UNL update control message. (#169)

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This commit is contained in:
Ravin Perera
2020-11-26 22:26:12 +05:30
committed by GitHub
parent 993eb11971
commit d476f787a7
20 changed files with 304 additions and 76 deletions
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28
src/consensus.cpp
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@@ -15,6 +15,7 @@
#include "hpfs/hpfs.hpp"
#include "state/state_common.hpp"
#include "state/state_sync.hpp"
#include "unl.hpp"
#include "ledger.hpp"
#include "consensus.hpp"
@@ -117,7 +118,8 @@ namespace consensus
// Get current lcl and state.
std::string lcl = ledger::ctx.get_lcl();
uint64_t lcl_seq_no = ledger::ctx.get_seq_no();
const uint64_t lcl_seq_no = ledger::ctx.get_seq_no();
const size_t unl_count = unl::count();
hpfs::h32 state = state_common::ctx.get_state();
vote_counter votes;
@@ -133,19 +135,19 @@ namespace consensus
}
else if (ctx.stage == 1)
{
if (is_in_sync(lcl, votes))
if (is_in_sync(lcl, unl_count, votes))
{
// If we are in sync, vote and broadcast the winning votes to next stage.
const p2p::proposal p = create_stage123_proposal(STAGE1_THRESHOLD, votes, lcl, state);
const p2p::proposal p = create_stage123_proposal(STAGE1_THRESHOLD, votes, lcl, unl_count, state);
broadcast_proposal(p);
}
}
else if (ctx.stage == 2)
{
if (is_in_sync(lcl, votes))
if (is_in_sync(lcl, unl_count, votes))
{
// If we are in sync, vote and broadcast the winning votes to next stage.
const p2p::proposal p = create_stage123_proposal(STAGE2_THRESHOLD, votes, lcl, state);
const p2p::proposal p = create_stage123_proposal(STAGE2_THRESHOLD, votes, lcl, unl_count, state);
broadcast_proposal(p);
}
@@ -156,11 +158,11 @@ namespace consensus
}
else if (ctx.stage == 3)
{
if (is_in_sync(lcl, votes))
if (is_in_sync(lcl, unl_count, votes))
{
// If we are in sync, vote and get the final winning votes.
// This is the consensus proposal which makes it into the ledger and contract execution
const p2p::proposal p = create_stage123_proposal(STAGE3_THRESHOLD, votes, lcl, state);
const p2p::proposal p = create_stage123_proposal(STAGE3_THRESHOLD, votes, lcl, unl_count, state);
// Update the ledger and execute the contract using the consensus proposal.
if (update_ledger_and_execute_contract(p, lcl, state) == -1)
@@ -173,12 +175,12 @@ namespace consensus
return 0;
}
bool is_in_sync(std::string_view lcl, vote_counter &votes)
bool is_in_sync(std::string_view lcl, const size_t unl_count, vote_counter &votes)
{
// Check if we're ahead/behind of consensus lcl.
bool is_lcl_desync = false;
std::string majority_lcl;
if (check_lcl_votes(is_lcl_desync, majority_lcl, votes, lcl))
if (check_lcl_votes(is_lcl_desync, majority_lcl, votes, lcl, unl_count))
{
// We proceed further only if lcl check was success (meaning lcl check could be reliably performed).
@@ -514,7 +516,7 @@ namespace consensus
return stg_prop;
}
p2p::proposal create_stage123_proposal(const float_t vote_threshold, vote_counter &votes, std::string_view lcl, hpfs::h32 state)
p2p::proposal create_stage123_proposal(const float_t vote_threshold, vote_counter &votes, std::string_view lcl, const size_t unl_count, const hpfs::h32 state)
{
// The proposal to be emited at the end of this stage.
p2p::proposal stg_prop;
@@ -552,7 +554,7 @@ namespace consensus
increment(votes.outputs, hash);
}
const uint32_t required_votes = ceil(vote_threshold * conf::cfg.unl.size());
const uint32_t required_votes = ceil(vote_threshold * unl_count);
// todo: check if inputs being proposed by another node are actually spoofed inputs
// from a user locally connected to this node.
@@ -637,7 +639,7 @@ namespace consensus
* @param lcl Our lcl.
* @return True if majority lcl could be calculated reliably. False if lcl check failed due to unreliable votes.
*/
bool check_lcl_votes(bool &is_desync, std::string &majority_lcl, vote_counter &votes, std::string_view lcl)
bool check_lcl_votes(bool &is_desync, std::string &majority_lcl, vote_counter &votes, std::string_view lcl, const size_t unl_count)
{
uint32_t total_lcl_votes = 0;
@@ -648,7 +650,7 @@ namespace consensus
}
// Check whether we have received enough votes in total.
const uint32_t min_required = ceil(MAJORITY_THRESHOLD * conf::cfg.unl.size());
const uint32_t min_required = ceil(MAJORITY_THRESHOLD * unl_count);
if (total_lcl_votes < min_required)
{
LOG_DEBUG << "Not enough peers proposing to perform consensus. votes:" << total_lcl_votes << " needed:" << min_required;