blockchain_export can now export to a blocks.dat format

Also make the number of blocks endian independant, and add
support for testnet

6 files changed, 331 insertions, 20 deletions

diff --git a/src/blockchain_utilities/CMakeLists.txt b/src/blockchain_utilities/CMakeLists.txt
index 5be37c450..7be9d95f7 100644
--- a/src/blockchain_utilities/CMakeLists.txt
+++ b/src/blockchain_utilities/CMakeLists.txt
@@ -38,11 +38,13 @@ bitmonero_private_headers(blockchain_converter
 set(blockchain_import_sources
   blockchain_import.cpp
   bootstrap_file.cpp
+  blocksdat_file.cpp
   )
 
 set(blockchain_import_private_headers
   fake_core.h
   bootstrap_file.h
+  blocksdat_file.h
   bootstrap_serialization.h
   )
 
@@ -52,10 +54,12 @@ bitmonero_private_headers(blockchain_import
 set(blockchain_export_sources
   blockchain_export.cpp
   bootstrap_file.cpp
+  blocksdat_file.cpp
   )
 
 set(blockchain_export_private_headers
   bootstrap_file.h
+  blocksdat_file.h
   bootstrap_serialization.h
   )
 
diff --git a/src/blockchain_utilities/blockchain_export.cpp b/src/blockchain_utilities/blockchain_export.cpp
index 8db8b7cdb..4a96bad6b 100644
--- a/src/blockchain_utilities/blockchain_export.cpp
+++ b/src/blockchain_utilities/blockchain_export.cpp
@@ -27,6 +27,7 @@
 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "bootstrap_file.h"
+#include "blocksdat_file.h"
 #include "common/command_line.h"
 #include "version.h"
 
@@ -39,6 +40,7 @@ int main(int argc, char* argv[])
 {
   uint32_t log_level = 0;
   uint64_t block_stop = 0;
+  bool blocks_dat = false;
 
   boost::filesystem::path default_data_path {tools::get_default_data_dir()};
   boost::filesystem::path default_testnet_data_path {default_data_path / "testnet"};
@@ -54,6 +56,7 @@ int main(int argc, char* argv[])
       , "Run on testnet."
       , false
   };
+  const command_line::arg_descriptor<bool> arg_blocks_dat = {"blocksdat", "Output in blocks.dat format", blocks_dat};
 
 
   command_line::add_arg(desc_cmd_sett, command_line::arg_data_dir, default_data_path.string());
@@ -62,6 +65,7 @@ int main(int argc, char* argv[])
   command_line::add_arg(desc_cmd_sett, arg_testnet_on);
   command_line::add_arg(desc_cmd_sett, arg_log_level);
   command_line::add_arg(desc_cmd_sett, arg_block_stop);
+  command_line::add_arg(desc_cmd_sett, arg_blocks_dat);
 
   command_line::add_arg(desc_cmd_only, command_line::arg_help);
 
@@ -94,6 +98,7 @@ int main(int argc, char* argv[])
   LOG_PRINT_L0("Setting log level = " << log_level);
 
   bool opt_testnet = command_line::get_arg(vm, arg_testnet_on);
+  bool opt_blocks_dat = command_line::get_arg(vm, arg_blocks_dat);
 
   std::string m_config_folder;
 
@@ -155,8 +160,16 @@ int main(int argc, char* argv[])
   LOG_PRINT_L0("Source blockchain storage initialized OK");
   LOG_PRINT_L0("Exporting blockchain raw data...");
 
-  BootstrapFile bootstrap;
-  r = bootstrap.store_blockchain_raw(core_storage, NULL, output_file_path, block_stop);
+  if (opt_blocks_dat)
+  {
+    BlocksdatFile blocksdat;
+    r = blocksdat.store_blockchain_raw(core_storage, NULL, output_file_path, block_stop);
+  }
+  else
+  {
+    BootstrapFile bootstrap;
+    r = bootstrap.store_blockchain_raw(core_storage, NULL, output_file_path, block_stop);
+  }
   CHECK_AND_ASSERT_MES(r, false, "Failed to export blockchain raw data");
   LOG_PRINT_L0("Blockchain raw data exported OK");
 }
diff --git a/src/blockchain_utilities/blockchain_utilities.h b/src/blockchain_utilities/blockchain_utilities.h
new file mode 100644
index 000000000..ff57a9320
--- /dev/null
+++ b/src/blockchain_utilities/blockchain_utilities.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2014-2015, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include "version.h"
+
+
+// CONFIG: choose one of the three #define's
+//
+// DB_MEMORY is a sensible default for users migrating to LMDB, as it allows
+// the exporter to use the in-memory blockchain while the other binaries
+// work with LMDB, without recompiling anything.
+//
+#define SOURCE_DB DB_MEMORY
+//#define SOURCE_DB DB_LMDB
+// to use global compile-time setting (DB_MEMORY or DB_LMDB):
+// #define SOURCE_DB BLOCKCHAIN_DB
+
+
+// bounds checking is done before writing to buffer, but buffer size
+// should be a sensible maximum
+#define BUFFER_SIZE 1000000
+#define NUM_BLOCKS_PER_CHUNK 1
+#define BLOCKCHAIN_RAW "blockchain.raw"
+
diff --git a/src/blockchain_utilities/blocksdat_file.cpp b/src/blockchain_utilities/blocksdat_file.cpp
new file mode 100644
index 000000000..f7de2a480
--- /dev/null
+++ b/src/blockchain_utilities/blocksdat_file.cpp
@@ -0,0 +1,170 @@
+// Copyright (c) 2014-2015, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "blocksdat_file.h"
+
+
+namespace po = boost::program_options;
+
+using namespace cryptonote;
+using namespace epee;
+
+namespace
+{
+  std::string refresh_string = "\r                                    \r";
+}
+
+
+
+bool BlocksdatFile::open_writer(const boost::filesystem::path& file_path, uint64_t block_stop)
+{
+  const boost::filesystem::path dir_path = file_path.parent_path();
+  if (!dir_path.empty())
+  {
+    if (boost::filesystem::exists(dir_path))
+    {
+      if (!boost::filesystem::is_directory(dir_path))
+      {
+        LOG_PRINT_RED_L0("export directory path is a file: " << dir_path);
+        return false;
+      }
+    }
+    else
+    {
+      if (!boost::filesystem::create_directory(dir_path))
+      {
+        LOG_PRINT_RED_L0("Failed to create directory " << dir_path);
+        return false;
+      }
+    }
+  }
+
+  m_raw_data_file = new std::ofstream();
+
+  uint64_t num_blocks = 0;
+
+  LOG_PRINT_L0("creating file");
+
+  m_raw_data_file->open(file_path.string(), std::ios_base::binary | std::ios_base::out | std::ios::trunc);
+  if (m_raw_data_file->fail())
+    return false;
+
+  initialize_file(block_stop);
+
+  return true;
+}
+
+
+bool BlocksdatFile::initialize_file(uint64_t block_stop)
+{
+  const uint32_t nblocks = block_stop + 1;
+  unsigned char nblocksc[4];
+
+  nblocksc[0] = nblocks & 0xff;
+  nblocksc[1] = (nblocks >> 8) & 0xff;
+  nblocksc[2] = (nblocks >> 16) & 0xff;
+  nblocksc[3] = (nblocks >> 24) & 0xff;
+
+  // 4 bytes little endian
+  *m_raw_data_file << nblocksc[0];
+  *m_raw_data_file << nblocksc[1];
+  *m_raw_data_file << nblocksc[2];
+  *m_raw_data_file << nblocksc[3];
+
+  return true;
+}
+
+void BlocksdatFile::write_block(const crypto::hash& block_hash)
+{
+  const std::string data(block_hash.data, sizeof(block_hash));
+  *m_raw_data_file << data;
+}
+
+bool BlocksdatFile::close()
+{
+  if (m_raw_data_file->fail())
+    return false;
+
+  m_raw_data_file->flush();
+  delete m_raw_data_file;
+  return true;
+}
+
+
+#if SOURCE_DB == DB_MEMORY
+bool BlocksdatFile::store_blockchain_raw(blockchain_storage* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_file, uint64_t requested_block_stop)
+#else
+bool BlocksdatFile::store_blockchain_raw(Blockchain* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_file, uint64_t requested_block_stop)
+#endif
+{
+  uint64_t num_blocks_written = 0;
+  m_blockchain_storage = _blockchain_storage;
+  uint64_t progress_interval = 100;
+  block b;
+
+  uint64_t block_start = 0;
+  uint64_t block_stop = 0;
+  LOG_PRINT_L0("source blockchain height: " <<  m_blockchain_storage->get_current_blockchain_height()-1);
+  if ((requested_block_stop > 0) && (requested_block_stop < m_blockchain_storage->get_current_blockchain_height()))
+  {
+    LOG_PRINT_L0("Using requested block height: " << requested_block_stop);
+    block_stop = requested_block_stop;
+  }
+  else
+  {
+    block_stop = m_blockchain_storage->get_current_blockchain_height() - 1;
+    LOG_PRINT_L0("Using block height of source blockchain: " << block_stop);
+  }
+  LOG_PRINT_L0("Storing blocks raw data...");
+  if (!BlocksdatFile::open_writer(output_file, block_stop))
+  {
+    LOG_PRINT_RED_L0("failed to open raw file for write");
+    return false;
+  }
+  for (m_cur_height = block_start; m_cur_height <= block_stop; ++m_cur_height)
+  {
+    // this method's height refers to 0-based height (genesis block = height 0)
+    crypto::hash hash = m_blockchain_storage->get_block_id_by_height(m_cur_height);
+    write_block(hash);
+    if (m_cur_height % NUM_BLOCKS_PER_CHUNK == 0) {
+      num_blocks_written += NUM_BLOCKS_PER_CHUNK;
+    }
+    if (m_cur_height % progress_interval == 0) {
+      std::cout << refresh_string;
+      std::cout << "block " << m_cur_height << "/" << block_stop << std::flush;
+    }
+  }
+  // print message for last block, which may not have been printed yet due to progress_interval
+  std::cout << refresh_string;
+  std::cout << "block " << m_cur_height-1 << "/" << block_stop << ENDL;
+
+  LOG_PRINT_L0("Number of blocks exported: " << num_blocks_written);
+
+  return BlocksdatFile::close();
+}
+
diff --git a/src/blockchain_utilities/blocksdat_file.h b/src/blockchain_utilities/blocksdat_file.h
new file mode 100644
index 000000000..eefef6fa6
--- /dev/null
+++ b/src/blockchain_utilities/blocksdat_file.h
@@ -0,0 +1,90 @@
+// Copyright (c) 2014-2015, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include <boost/iostreams/stream_buffer.hpp>
+#include <boost/iostreams/stream.hpp>
+#include <boost/iostreams/device/back_inserter.hpp>
+
+#include <boost/iostreams/filtering_streambuf.hpp>
+
+#include "cryptonote_core/cryptonote_basic.h"
+#include "cryptonote_core/cryptonote_boost_serialization.h"
+#include "cryptonote_core/blockchain_storage.h"
+#include "cryptonote_core/blockchain.h"
+#include "blockchain_db/blockchain_db.h"
+#include "blockchain_db/lmdb/db_lmdb.h"
+
+#include <algorithm>
+#include <cstdio>
+#include <fstream>
+#include <boost/iostreams/copy.hpp>
+#include <atomic>
+
+#include "common/command_line.h"
+#include "version.h"
+
+#include "blockchain_utilities.h"
+
+
+using namespace cryptonote;
+
+
+class BlocksdatFile
+{
+public:
+
+#if SOURCE_DB == DB_MEMORY
+  bool store_blockchain_raw(cryptonote::blockchain_storage* cs, cryptonote::tx_memory_pool* txp,
+      boost::filesystem::path& output_file, uint64_t use_block_height=0);
+#else
+  bool store_blockchain_raw(cryptonote::Blockchain* cs, cryptonote::tx_memory_pool* txp,
+      boost::filesystem::path& output_file, uint64_t use_block_height=0);
+#endif
+
+protected:
+
+#if SOURCE_DB == DB_MEMORY
+  blockchain_storage* m_blockchain_storage;
+#else
+  Blockchain* m_blockchain_storage;
+#endif
+
+  std::ofstream * m_raw_data_file;
+
+  // open export file for write
+  bool open_writer(const boost::filesystem::path& file_path, uint64_t block_stop);
+  bool initialize_file(uint64_t block_stop);
+  bool close();
+  void write_block(const crypto::hash &block_hash);
+
+private:
+
+  uint64_t m_cur_height; // tracks current height during export
+};
diff --git a/src/blockchain_utilities/bootstrap_file.h b/src/blockchain_utilities/bootstrap_file.h
index fcf89d1ac..6f8df18dd 100644
--- a/src/blockchain_utilities/bootstrap_file.h
+++ b/src/blockchain_utilities/bootstrap_file.h
@@ -49,24 +49,7 @@
 #include "common/command_line.h"
 #include "version.h"
 
-
-// CONFIG: choose one of the three #define's
-//
-// DB_MEMORY is a sensible default for users migrating to LMDB, as it allows
-// the exporter to use the in-memory blockchain while the other binaries
-// work with LMDB, without recompiling anything.
-//
-#define SOURCE_DB DB_MEMORY
-// #define SOURCE_DB DB_LMDB
-// to use global compile-time setting (DB_MEMORY or DB_LMDB):
-// #define SOURCE_DB BLOCKCHAIN_DB
-
-
-// bounds checking is done before writing to buffer, but buffer size
-// should be a sensible maximum
-#define BUFFER_SIZE 1000000
-#define NUM_BLOCKS_PER_CHUNK 1
-#define BLOCKCHAIN_RAW "blockchain.raw"
+#include "blockchain_utilities.h"
 
 
 using namespace cryptonote;