DB cleanup

Hide LMDB-specific stuff behind blockchain_db.h. Nobody besides blockchain_db.cpp
should ever be including DB-specific headers any more.

7 files changed, 49 insertions, 119 deletions

diff --git a/src/blockchain_db/blockchain_db.cpp b/src/blockchain_db/blockchain_db.cpp
index a6774a25c..c7ca533ef 100644
--- a/src/blockchain_db/blockchain_db.cpp
+++ b/src/blockchain_db/blockchain_db.cpp
@@ -33,6 +33,11 @@
 #include "profile_tools.h"
 #include "ringct/rctOps.h"
 
+#include "lmdb/db_lmdb.h"
+#ifdef BERKELEY_DB
+#include "berkeleydb/db_bdb.h"
+#endif
+
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "blockchain.db"
 
@@ -41,6 +46,17 @@ using epee::string_tools::pod_to_hex;
 namespace cryptonote
 {
 
+BlockchainDB *new_db(const std::string& db_type)
+{
+  if (db_type == "lmdb")
+    return new BlockchainLMDB();
+#if defined(BERKELEY_DB)
+  if (db_type == "berkeley")
+    return new BlockchainBDB();
+#endif
+  return NULL;
+}
+
 void BlockchainDB::pop_block()
 {
   block blk;
diff --git a/src/blockchain_db/blockchain_db.h b/src/blockchain_db/blockchain_db.h
index 27e63801d..3efb8c3c3 100644
--- a/src/blockchain_db/blockchain_db.h
+++ b/src/blockchain_db/blockchain_db.h
@@ -145,6 +145,12 @@ struct txpool_tx_meta_t
   uint8_t padding[77]; // till 192 bytes
 };
 
+#define DBF_SAFE       1
+#define DBF_FAST       2
+#define DBF_FASTEST    4
+#define DBF_RDONLY     8
+#define DBF_SALVAGE 0x10
+
 /***********************************
  * Exception Definitions
  ***********************************/
@@ -1491,6 +1497,7 @@ public:
 
 };  // class BlockchainDB
 
+BlockchainDB *new_db(const std::string& db_type);
 
 }  // namespace cryptonote
 
diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp
index 4441c7578..a756c04c6 100644
--- a/src/blockchain_db/lmdb/db_lmdb.cpp
+++ b/src/blockchain_db/lmdb/db_lmdb.cpp
@@ -1083,9 +1083,10 @@ BlockchainLMDB::BlockchainLMDB(bool batch_transactions)
   m_hardfork = nullptr;
 }
 
-void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
+void BlockchainLMDB::open(const std::string& filename, const int db_flags)
 {
   int result;
+  int mdb_flags = MDB_NORDAHEAD;
 
   LOG_PRINT_L3("BlockchainLMDB::" << __func__);
 
@@ -1124,6 +1125,15 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
 
   size_t mapsize = DEFAULT_MAPSIZE;
 
+  if (db_flags & DBF_FAST)
+    mdb_flags |= MDB_NOSYNC;
+  if (db_flags & DBF_FASTEST)
+    mdb_flags |= MDB_NOSYNC | MDB_WRITEMAP | MDB_MAPASYNC;
+  if (db_flags & DBF_RDONLY)
+    mdb_flags = MDB_RDONLY;
+  if (db_flags & DBF_SALVAGE)
+    mdb_flags |= MDB_PREVSNAPSHOT;
+
   if (auto result = mdb_env_open(m_env, filename.c_str(), mdb_flags, 0644))
     throw0(DB_ERROR(lmdb_error("Failed to open lmdb environment: ", result).c_str()));
 
diff --git a/src/blockchain_utilities/blockchain_export.cpp b/src/blockchain_utilities/blockchain_export.cpp
index f145bc107..82eca91b6 100644
--- a/src/blockchain_utilities/blockchain_export.cpp
+++ b/src/blockchain_utilities/blockchain_export.cpp
@@ -31,10 +31,6 @@
 #include "common/command_line.h"
 #include "cryptonote_core/tx_pool.h"
 #include "blockchain_db/blockchain_db.h"
-#include "blockchain_db/lmdb/db_lmdb.h"
-#if defined(BERKELEY_DB)
-#include "blockchain_db/berkeleydb/db_bdb.h"
-#endif
 #include "blockchain_db/db_types.h"
 #include "version.h"
 
@@ -149,13 +145,6 @@ int main(int argc, char* argv[])
     std::cerr << "Invalid database type: " << db_type << std::endl;
     return 1;
   }
-#if !defined(BERKELEY_DB)
-  if (db_type == "berkeley")
-  {
-    LOG_ERROR("BerkeleyDB support disabled.");
-    return false;
-  }
-#endif
 
   if (command_line::has_arg(vm, arg_output_file))
     output_file_path = boost::filesystem::path(command_line::get_arg(vm, arg_output_file));
@@ -179,19 +168,8 @@ int main(int argc, char* argv[])
   tx_memory_pool m_mempool(*core_storage);
   core_storage = new Blockchain(m_mempool);
 
-  int db_flags = 0;
-
-  BlockchainDB* db = nullptr;
-  if (db_type == "lmdb")
-  {
-    db_flags |= MDB_RDONLY;
-    db = new BlockchainLMDB();
-  }
-#if defined(BERKELEY_DB)
-  else if (db_type == "berkeley")
-    db = new BlockchainBDB();
-#endif
-  else
+  BlockchainDB* db = new_db(db_type);
+  if (db == NULL)
   {
     LOG_ERROR("Attempted to use non-existent database type: " << db_type);
     throw std::runtime_error("Attempting to use non-existent database type");
@@ -205,7 +183,7 @@ int main(int argc, char* argv[])
   LOG_PRINT_L0("Loading blockchain from folder " << filename << " ...");
   try
   {
-    db->open(filename, db_flags);
+    db->open(filename, DBF_RDONLY);
   }
   catch (const std::exception& e)
   {
diff --git a/src/blockchain_utilities/blockchain_import.cpp b/src/blockchain_utilities/blockchain_import.cpp
index 6f908c799..34dcb28ac 100644
--- a/src/blockchain_utilities/blockchain_import.cpp
+++ b/src/blockchain_utilities/blockchain_import.cpp
@@ -90,28 +90,16 @@ std::string join_set_strings(const std::unordered_set<std::string>& db_types_all
   return result;
 }
 
-// db_type: lmdb, berkeley
 // db_mode: safe, fast, fastest
-int get_db_flags_from_mode(const std::string& db_type, const std::string& db_mode)
+int get_db_flags_from_mode(const std::string& db_mode)
 {
-  uint64_t BDB_FAST_MODE = 0;
-  uint64_t BDB_FASTEST_MODE = 0;
-  uint64_t BDB_SAFE_MODE = 0;
-
-#if defined(BERKELEY_DB)
-  BDB_FAST_MODE = DB_TXN_WRITE_NOSYNC;
-  BDB_FASTEST_MODE = DB_TXN_NOSYNC;
-  BDB_SAFE_MODE = DB_TXN_SYNC;
-#endif
-
   int db_flags = 0;
-  bool islmdb = db_type == "lmdb";
   if (db_mode == "safe")
-    db_flags = islmdb ? MDB_NORDAHEAD : BDB_SAFE_MODE;
+    db_flags = DBF_SAFE;
   else if (db_mode == "fast")
-    db_flags = islmdb ? MDB_NOMETASYNC | MDB_NOSYNC | MDB_NORDAHEAD : BDB_FAST_MODE;
+    db_flags = DBF_FAST;
   else if (db_mode == "fastest")
-    db_flags = islmdb ? MDB_WRITEMAP | MDB_MAPASYNC | MDB_NORDAHEAD | MDB_NOMETASYNC | MDB_NOSYNC : BDB_FASTEST_MODE;
+    db_flags = DBF_FASTEST;
   return db_flags;
 }
 
@@ -132,14 +120,6 @@ int parse_db_arguments(const std::string& db_arg_str, std::string& db_type, int&
     return 1;
   }
 
-#if !defined(BERKELEY_DB)
-  if (db_type == "berkeley")
-  {
-    MFATAL("BerkeleyDB support disabled.");
-    return false;
-  }
-#endif
-
   std::string db_arg_str2 = db_args[1];
   boost::split(db_args, db_arg_str2, boost::is_any_of(","));
 
@@ -155,51 +135,7 @@ int parse_db_arguments(const std::string& db_arg_str, std::string& db_type, int&
   }
   if (! db_mode.empty())
   {
-    db_flags = get_db_flags_from_mode(db_type, db_mode);
-  }
-  else
-  {
-    for (auto& it : db_args)
-    {
-      boost::algorithm::trim(it);
-      if (it.empty())
-	continue;
-      if (db_type == "lmdb")
-      {
-	MINFO("LMDB flag: " << it);
-	if (it == "nosync")
-	  db_flags |= MDB_NOSYNC;
-	else if (it == "nometasync")
-	  db_flags |= MDB_NOMETASYNC;
-	else if (it == "writemap")
-	  db_flags |= MDB_WRITEMAP;
-	else if (it == "mapasync")
-	  db_flags |= MDB_MAPASYNC;
-	else if (it == "nordahead")
-	  db_flags |= MDB_NORDAHEAD;
-	else
-	{
-	  std::cerr << "unrecognized database flag: " << it << ENDL;
-	  return 1;
-	}
-      }
-#if defined(BERKELEY_DB)
-      else if (db_type == "berkeley")
-      {
-	if (it == "txn_write_nosync")
-	  db_flags = DB_TXN_WRITE_NOSYNC;
-	else if (it == "txn_nosync")
-	  db_flags = DB_TXN_NOSYNC;
-	else if (it == "txn_sync")
-	  db_flags = DB_TXN_SYNC;
-	else
-	{
-	  std::cerr << "unrecognized database flag: " << it << ENDL;
-	  return 1;
-	}
-      }
-#endif
-    }
+    db_flags = get_db_flags_from_mode(db_mode);
   }
   return 0;
 }
diff --git a/src/blockchain_utilities/blocksdat_file.h b/src/blockchain_utilities/blocksdat_file.h
index 4e9d8173b..0a5913058 100644
--- a/src/blockchain_utilities/blocksdat_file.h
+++ b/src/blockchain_utilities/blocksdat_file.h
@@ -38,7 +38,6 @@
 #include "cryptonote_basic/cryptonote_boost_serialization.h"
 #include "cryptonote_core/blockchain.h"
 #include "blockchain_db/blockchain_db.h"
-#include "blockchain_db/lmdb/db_lmdb.h"
 
 #include <algorithm>
 #include <cstdio>
diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index 19f4aaca9..314f37246 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -48,10 +48,6 @@ using namespace epee;
 #include "cryptonote_basic/checkpoints.h"
 #include "ringct/rctTypes.h"
 #include "blockchain_db/blockchain_db.h"
-#include "blockchain_db/lmdb/db_lmdb.h"
-#if defined(BERKELEY_DB)
-#include "blockchain_db/berkeleydb/db_bdb.h"
-#endif
 #include "ringct/rctSigs.h"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
@@ -308,20 +304,8 @@ namespace cryptonote
     // folder might not be a directory, etc, etc
     catch (...) { }
 
-    BlockchainDB* db = nullptr;
-    uint64_t DBS_FAST_MODE = 0;
-    uint64_t DBS_FASTEST_MODE = 0;
-    uint64_t DBS_SAFE_MODE = 0;
-    uint64_t DBS_SALVAGE = 0;
-    if (db_type == "lmdb")
-    {
-      db = new BlockchainLMDB();
-      DBS_SAFE_MODE = MDB_NORDAHEAD;
-      DBS_FAST_MODE = MDB_NORDAHEAD | MDB_NOSYNC;
-      DBS_FASTEST_MODE = MDB_NORDAHEAD | MDB_NOSYNC | MDB_WRITEMAP | MDB_MAPASYNC;
-      DBS_SALVAGE = MDB_PREVSNAPSHOT;
-    }
-    else
+    BlockchainDB* db = new_db(db_type);
+    if (db == NULL)
     {
       LOG_ERROR("Attempted to use non-existent database type");
       return false;
@@ -347,7 +331,7 @@ namespace cryptonote
         MDEBUG("option: " << option);
 
       // default to fast:async:1
-      uint64_t DEFAULT_FLAGS = DBS_FAST_MODE;
+      uint64_t DEFAULT_FLAGS = DBF_FAST;
 
       if(options.size() == 0)
       {
@@ -361,14 +345,14 @@ namespace cryptonote
         if(options[0] == "safe")
         {
           safemode = true;
-          db_flags = DBS_SAFE_MODE;
+          db_flags = DBF_SAFE;
           sync_mode = db_nosync;
         }
         else if(options[0] == "fast")
-          db_flags = DBS_FAST_MODE;
+          db_flags = DBF_FAST;
         else if(options[0] == "fastest")
         {
-          db_flags = DBS_FASTEST_MODE;
+          db_flags = DBF_FASTEST;
           blocks_per_sync = 1000; // default to fastest:async:1000
         }
         else
@@ -392,7 +376,7 @@ namespace cryptonote
       }
 
       if (db_salvage)
-        db_flags |= DBS_SALVAGE;
+        db_flags |= DBF_SALVAGE;
 
       db->open(filename, db_flags);
       if(!db->m_open)