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update new blockchain to build with new changes

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Still need to add in the new checkpointing functionality, as well as
touch up a few things, but is okay for now.
This commit is contained in:
Thomas Winget 2014-10-13 00:31:21 -04:00 committed by warptangent
parent 1ffbeb2d2e
commit 07733f98c0
2 changed files with 34 additions and 13 deletions
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40
src/cryptonote_core/blockchain.cpp
View File

@ -218,7 +218,7 @@ uint64_t Blockchain::get_current_blockchain_height()
//------------------------------------------------------------------ //------------------------------------------------------------------
//FIXME: possibly move this into the constructor, to avoid accidentally //FIXME: possibly move this into the constructor, to avoid accidentally
// dereferencing a null BlockchainDB pointer // dereferencing a null BlockchainDB pointer
bool Blockchain::init(const std::string& config_folder) bool Blockchain::init(const std::string& config_folder, bool testnet)
{ {
CRITICAL_REGION_LOCAL(m_blockchain_lock); CRITICAL_REGION_LOCAL(m_blockchain_lock);
@ -248,15 +248,29 @@ bool Blockchain::init(const std::string& config_folder)
// if the blockchain is new, add the genesis block // if the blockchain is new, add the genesis block
// this feels kinda kludgy to do it this way, but can be looked at later. // this feels kinda kludgy to do it this way, but can be looked at later.
// TODO: add function to create and store genesis block,
// taking testnet into account
if(!m_db->height()) if(!m_db->height())
{ {
LOG_PRINT_L0("Blockchain not loaded, generating genesis block."); LOG_PRINT_L0("Blockchain not loaded, generating genesis block.");
block bl = boost::value_initialized<block>(); block bl = boost::value_initialized<block>();
block_verification_context bvc = boost::value_initialized<block_verification_context>(); block_verification_context bvc = boost::value_initialized<block_verification_context>();
generate_genesis_block(bl); if (testnet)
{
generate_genesis_block(bl, config::testnet::GENESIS_TX, config::testnet::GENESIS_NONCE);
}
else
{
generate_genesis_block(bl, config::GENESIS_TX, config::GENESIS_NONCE);
}
add_new_block(bl, bvc); add_new_block(bl, bvc);
CHECK_AND_ASSERT_MES(!bvc.m_verifivation_failed, false, "Failed to add genesis block to blockchain"); CHECK_AND_ASSERT_MES(!bvc.m_verifivation_failed, false, "Failed to add genesis block to blockchain");
} }
// TODO: if blockchain load successful, verify blockchain against both
// hard-coded and runtime-loaded (and enforced) checkpoints.
else
{
}
// check how far behind we are // check how far behind we are
uint64_t top_block_timestamp = m_db->get_top_block_timestamp(); uint64_t top_block_timestamp = m_db->get_top_block_timestamp();
@ -576,14 +590,12 @@ difficulty_type Blockchain::get_difficulty_for_next_block()
// This function removes blocks from the blockchain until it gets to the // This function removes blocks from the blockchain until it gets to the
// position where the blockchain switch started and then re-adds the blocks // position where the blockchain switch started and then re-adds the blocks
// that had been removed. // that had been removed.
bool Blockchain::rollback_blockchain_switching(std::list<block>& original_chain) bool Blockchain::rollback_blockchain_switching(std::list<block>& original_chain, uint64_t rollback_height)
{ {
CRITICAL_REGION_LOCAL(m_blockchain_lock); CRITICAL_REGION_LOCAL(m_blockchain_lock);
// remove blocks from blockchain until we get back to where we were. // remove blocks from blockchain until we get back to where we should be.
// Conveniently, that's until our top block's hash == the parent block of while (m_db->height() != rollback_height)
// the first block we need to add back.
while (m_db->top_block_hash() != original_chain.front().prev_id)
{ {
pop_block_from_blockchain(); pop_block_from_blockchain();
} }
@ -596,6 +608,11 @@ bool Blockchain::rollback_blockchain_switching(std::list<block>& original_chain)
CHECK_AND_ASSERT_MES(r && bvc.m_added_to_main_chain, false, "PANIC!!! failed to add (again) block while chain switching during the rollback!"); CHECK_AND_ASSERT_MES(r && bvc.m_added_to_main_chain, false, "PANIC!!! failed to add (again) block while chain switching during the rollback!");
} }
LOG_PRINT_L1("Rollback to height " << rollback_height << " was successful.");
if (original_chain.size())
{
LOG_PRINT_L1("Restoration to previous blockchain successful as well.");
}
return true; return true;
} }
//------------------------------------------------------------------ //------------------------------------------------------------------
@ -640,7 +657,11 @@ bool Blockchain::switch_to_alternative_blockchain(std::list<blocks_ext_by_hash::
if(!r || !bvc.m_added_to_main_chain) if(!r || !bvc.m_added_to_main_chain)
{ {
LOG_PRINT_L0("Failed to switch to alternative blockchain"); LOG_PRINT_L0("Failed to switch to alternative blockchain");
rollback_blockchain_switching(disconnected_chain);
// rollback_blockchain_switching should be moved to two different
// functions: rollback and apply_chain, but for now we pretend it is
// just the latter (because the rollback was done above).
rollback_blockchain_switching(disconnected_chain, m_db->height());
// FIXME: Why do we keep invalid blocks around? Possibly in case we hear // FIXME: Why do we keep invalid blocks around? Possibly in case we hear
// about them again so we can immediately dismiss them, but needs some // about them again so we can immediately dismiss them, but needs some
@ -1823,7 +1844,8 @@ uint64_t Blockchain::get_adjusted_time()
return time(NULL); return time(NULL);
} }
//------------------------------------------------------------------ //------------------------------------------------------------------
bool Blockchain::check_block_timestamp(const std::vector<uint64_t>& timestamps, const block& b) //TODO: revisit, has changed a bit on upstream
bool Blockchain::check_block_timestamp(std::vector<uint64_t>& timestamps, const block& b)
{ {
uint64_t median_ts = epee::misc_utils::median(timestamps); uint64_t median_ts = epee::misc_utils::median(timestamps);

7
src/cryptonote_core/blockchain.h
View File

@ -81,8 +81,7 @@ namespace cryptonote
Blockchain(tx_memory_pool& tx_pool); Blockchain(tx_memory_pool& tx_pool);
bool init() { return init(tools::get_default_data_dir()); } bool init(const std::string& config_folder, bool testnet = false);
bool init(const std::string& config_folder);
bool deinit(); bool deinit();
void set_checkpoints(checkpoints&& chk_pts) { m_checkpoints = chk_pts; } void set_checkpoints(checkpoints&& chk_pts) { m_checkpoints = chk_pts; }
@ -189,7 +188,7 @@ namespace cryptonote
bool prevalidate_miner_transaction(const block& b, uint64_t height); bool prevalidate_miner_transaction(const block& b, uint64_t height);
bool validate_miner_transaction(const block& b, size_t cumulative_block_size, uint64_t fee, uint64_t& base_reward, uint64_t already_generated_coins); bool validate_miner_transaction(const block& b, size_t cumulative_block_size, uint64_t fee, uint64_t& base_reward, uint64_t already_generated_coins);
bool validate_transaction(const block& b, uint64_t height, const transaction& tx); bool validate_transaction(const block& b, uint64_t height, const transaction& tx);
bool rollback_blockchain_switching(std::list<block>& original_chain); bool rollback_blockchain_switching(std::list<block>& original_chain, uint64_t rollback_height);
bool add_transaction_from_block(const transaction& tx, const crypto::hash& tx_id, const crypto::hash& bl_id, uint64_t bl_height); bool add_transaction_from_block(const transaction& tx, const crypto::hash& tx_id, const crypto::hash& bl_id, uint64_t bl_height);
bool push_transaction_to_global_outs_index(const transaction& tx, const crypto::hash& tx_id, std::vector<uint64_t>& global_indexes); bool push_transaction_to_global_outs_index(const transaction& tx, const crypto::hash& tx_id, std::vector<uint64_t>& global_indexes);
bool pop_transaction_from_global_index(const transaction& tx, const crypto::hash& tx_id); bool pop_transaction_from_global_index(const transaction& tx, const crypto::hash& tx_id);
@ -199,7 +198,7 @@ namespace cryptonote
bool add_block_as_invalid(const block& bl, const crypto::hash& h); bool add_block_as_invalid(const block& bl, const crypto::hash& h);
bool add_block_as_invalid(const block_extended_info& bei, const crypto::hash& h); bool add_block_as_invalid(const block_extended_info& bei, const crypto::hash& h);
bool check_block_timestamp(const block& b); bool check_block_timestamp(const block& b);
bool check_block_timestamp(const std::vector<uint64_t>& timestamps, const block& b); bool check_block_timestamp(std::vector<uint64_t>& timestamps, const block& b);
uint64_t get_adjusted_time(); uint64_t get_adjusted_time();
bool complete_timestamps_vector(uint64_t start_height, std::vector<uint64_t>& timestamps); bool complete_timestamps_vector(uint64_t start_height, std::vector<uint64_t>& timestamps);
bool update_next_cumulative_size_limit(); bool update_next_cumulative_size_limit();