void mutation::copy_from(mutation_ptr& old) { data.updates = old->data.updates; rpc_code = old->rpc_code; if (old->is_logged()) { set_logged(); data.header.log_offset = old->data.header.log_offset; } _client_request = old->client_msg(); if (_client_request) { dsn_msg_add_ref(_client_request); } _prepare_request = old->prepare_msg(); if (_prepare_request) { dsn_msg_add_ref(_prepare_request); } }
void replica::init_prepare(mutation_ptr& mu) { dassert (PS_PRIMARY == status(), ""); error_code err = ERR_OK; uint8_t count = 0; mu->data.header.last_committed_decree = last_committed_decree(); if (mu->data.header.decree == invalid_decree) { mu->set_id(get_ballot(), _prepare_list->max_decree() + 1); } else { mu->set_id(get_ballot(), mu->data.header.decree); } dinfo("%s: mutation %s init_prepare, mutation_tid=%" PRIu64, name(), mu->name(), mu->tid()); // check bounded staleness if (mu->data.header.decree > last_committed_decree() + _options->staleness_for_commit) { err = ERR_CAPACITY_EXCEEDED; goto ErrOut; } dassert (mu->data.header.decree > last_committed_decree(), ""); // local prepare err = _prepare_list->prepare(mu, PS_PRIMARY); if (err != ERR_OK) { goto ErrOut; } // remote prepare mu->set_prepare_ts(); mu->set_left_secondary_ack_count((unsigned int)_primary_states.membership.secondaries.size()); for (auto it = _primary_states.membership.secondaries.begin(); it != _primary_states.membership.secondaries.end(); ++it) { send_prepare_message(*it, PS_SECONDARY, mu, _options->prepare_timeout_ms_for_secondaries); } count = 0; for (auto it = _primary_states.learners.begin(); it != _primary_states.learners.end(); ++it) { if (it->second.prepare_start_decree != invalid_decree && mu->data.header.decree >= it->second.prepare_start_decree) { send_prepare_message(it->first, PS_POTENTIAL_SECONDARY, mu, _options->prepare_timeout_ms_for_potential_secondaries, it->second.signature); count++; } } mu->set_left_potential_secondary_ack_count(count); if (mu->is_logged()) { do_possible_commit_on_primary(mu); } else { dassert(mu->data.header.log_offset == invalid_offset, ""); dassert(mu->log_task() == nullptr, ""); mu->log_task() = _stub->_log->append(mu, LPC_WRITE_REPLICATION_LOG, this, std::bind(&replica::on_append_log_completed, this, mu, std::placeholders::_1, std::placeholders::_2), gpid_to_hash(get_gpid()) ); dassert(nullptr != mu->log_task(), ""); } return; ErrOut: for (auto& r : mu->client_requests) { response_client_message(r, err); } return; }