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Make the LevelDB backend more configurable.

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This commit is contained in:
JoelKatz
2013-07-14 03:05:14 -07:00
parent f67e658bd7
commit a37349e1a7
1 changed files with 22 additions and 7 deletions
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29
modules/ripple_app/node/ripple_LevelDBBackendFactory.cpp
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@@ -7,18 +7,33 @@
class LevelDBBackendFactory::Backend : public NodeStore::Backend
{
public:
Backend (std::string const& path)
: mName(path)
Backend (StringPairArray const& keyValues)
: mName(keyValues ["path"].toStdString ())
, mDB(NULL)
{
if (mName.empty())
throw std::runtime_error ("Missing path in LevelDB backend");
leveldb::Options options;
options.create_if_missing = true;
options.block_cache = leveldb::NewLRUCache (theConfig.getSize (siHashNodeDBCache) * 1024 * 1024);
if (theConfig.NODE_SIZE >= 2)
options.filter_policy = leveldb::NewBloomFilterPolicy (10);
if (keyValues["cache_mb"].isEmpty())
options.block_cache = leveldb::NewLRUCache (theConfig.getSize (siHashNodeDBCache) * 1024 * 1024);
else
options.block_cache = leveldb::NewLRUCache (keyValues["cache_mb"].getIntValue() * 1024L * 1024L);
leveldb::Status status = leveldb::DB::Open (options, path, &mDB);
if (keyValues["filter_bits"].isEmpty())
{
if (theConfig.NODE_SIZE >= 2)
options.filter_policy = leveldb::NewBloomFilterPolicy (10);
}
else if (keyValues["filter_bits"].getIntValue() != 0)
options.filter_policy = leveldb::NewBloomFilterPolicy (keyValues["filter_bits"].getIntValue());
if (!keyValues["open_files"].isEmpty())
options.max_open_files = keyValues["open_files"].getIntValue();
leveldb::Status status = leveldb::DB::Open (options, mName, &mDB);
if (!status.ok () || !mDB)
throw (std::runtime_error (std::string("Unable to open/create leveldb: ") + status.ToString()));
}
@@ -127,7 +142,7 @@ String LevelDBBackendFactory::getName () const
NodeStore::Backend* LevelDBBackendFactory::createInstance (StringPairArray const& keyValues)
{
return new LevelDBBackendFactory::Backend (keyValues ["path"].toStdString ());
return new LevelDBBackendFactory::Backend (keyValues);
}
//------------------------------------------------------------------------------