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Merge pull request #677

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57e75fa BlockchainBDB: Check if hard fork subdbs need reset (warptangent)
47f6cf8 BlockchainBDB: Support blockchain_import --drop-hard-fork command (warptangent)
This commit is contained in:
Riccardo Spagni 2016-02-20 17:09:49 +02:00
commit a903d9c3f6
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1 changed files with 85 additions and 4 deletions
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89
src/blockchain_db/berkeleydb/db_bdb.cpp
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@ -1073,8 +1073,10 @@ void BlockchainBDB::sync()
m_spent_keys->sync(0);
m_hf_starting_heights->sync(0);
m_hf_versions->sync(0);
if (m_hf_starting_heights != nullptr)
m_hf_starting_heights->sync(0);
if (m_hf_versions != nullptr)
m_hf_versions->sync(0);
m_properties->sync(0);
}
@ -2208,12 +2210,91 @@ uint64_t BlockchainBDB::get_hard_fork_starting_height(uint8_t version) const
void BlockchainBDB::check_hard_fork_info()
{
/* FIXME: Some other time */
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
if (m_hf_versions == nullptr)
{
LOG_PRINT_L0("hf versions DB not open, so not checking");
return;
}
DB_BTREE_STAT* db_stat1, * db_stat2;
// DB_FAST_STAT can apparently cause an incorrect number of records
// to be returned. The flag should be set to 0 instead if this proves
// to be the case.
// Set txn to NULL and DB_FAST_STAT to zero (0) for reliability.
m_blocks->stat(NULL, &db_stat1, 0);
m_hf_versions->stat(NULL, &db_stat2, 0);
if (db_stat1->bt_nkeys != db_stat2->bt_nkeys)
{
LOG_PRINT_L0("num blocks " << db_stat1->bt_nkeys << " != " << "num hf_versions " << db_stat2->bt_nkeys << " - will clear the two hard fork DBs");
bdb_txn_safe txn;
bdb_txn_safe* txn_ptr = &txn;
if (m_write_txn)
txn_ptr = m_write_txn;
else
{
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
}
try
{
uint32_t count;
m_hf_starting_heights->truncate(*txn_ptr, &count, 0);
LOG_PRINT_L0("hf_starting_heights count: " << count);
m_hf_versions->truncate(*txn_ptr, &count, 0);
LOG_PRINT_L0("hf_versions count: " << count);
if (!m_write_txn)
txn.commit();
}
catch (const std::exception& e)
{
throw0(DB_ERROR(std::string("Failed to clear two hard fork DBs: ").append(e.what()).c_str()));
}
}
delete db_stat1;
delete db_stat2;
}
void BlockchainBDB::drop_hard_fork_info()
{
/* TODO */
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
bdb_txn_safe* txn_ptr = &txn;
if (m_write_txn)
txn_ptr = m_write_txn;
else
{
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
}
try
{
m_hf_starting_heights->close(0);
m_hf_versions->close(0);
m_hf_starting_heights = nullptr;
m_hf_versions = nullptr;
if (m_env->dbremove(*txn_ptr, BDB_HF_STARTING_HEIGHTS, NULL, 0) != 0)
LOG_ERROR("Error removing hf_starting_heights");
if (m_env->dbremove(*txn_ptr, BDB_HF_VERSIONS, NULL, 0) != 0)
LOG_ERROR("Error removing hf_versions");
if (!m_write_txn)
txn.commit();
}
catch (const std::exception& e)
{
throw0(DB_ERROR(std::string("Failed to drop hard fork info: ").append(e.what()).c_str()));
}
}
void BlockchainBDB::set_hard_fork_version(uint64_t height, uint8_t version)