The secure-messaging store (smsgDB) used the LevelDB API directly. Mass-
mapped to the equivalent RocksDB types: leveldb::DB/Status/WriteBatch/
Iterator/Slice/ReadOptions/WriteOptions/WriteBatch::Handler -> rocksdb::*.
The RocksDB API surface for our usage is binary-compatible — pure namespace
substitution, no semantic changes. Consumers in rpcsmessage.cpp and
qt/messagemodel.cpp updated to match.
RocksDB now becomes a hard build dependency (was optional behind
BUILD_ROCKSDB). The chain-DB rocksdb backend is consequently always
available; -chaindb=leveldb remains the default until the Phase-4
LevelDB retirement. Removed the BUILD_ROCKSDB cmake option, the
#ifdef BUILD_ROCKSDB guards in txdb*, and the runtime error path
that triggered when the flag was off.
CI updated: librocksdb-dev (Ubuntu), mingw-w64-x86_64-rocksdb (MSYS2),
and rocksdb (Homebrew) added to all build jobs.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bench-chaindb.sh times FastImportBlockFile() under each backend using a
user-supplied blk0001.dat. Wall time comes from the daemon's existing
StartupPerfLog line; peak RSS via ps sampling; datadir size via du.
Output is one CSV row per backend appended to ./bench-results.csv, plus
a stdout summary. Network is disabled during the run (-nolisten -connect=0)
so we measure only DB ingest cost.
Does not yet measure: reorg cost, network IBD speed, raw disk I/O.
LoadSnapshot path is still LevelDB-only; the harness intentionally exercises
the FastImportBlockFile rebuild instead, which works on both backends.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
sami7777