// NewFSBasedRawLedger constructs an instance of `FSBasedRawLedger`
func NewFSBasedRawLedger(filesystemPath string) *FSBasedRawLedger {
conf := fsblkstorage.NewConf(filesystemPath, fileSegmentSize)
attrsToIndex := []blkstorage.IndexableAttr{
blkstorage.IndexableAttrBlockNum,
}
indexConfig := &blkstorage.IndexConfig{AttrsToIndex: attrsToIndex}
blockStore := fsblkstorage.NewFsBlockStore(conf, indexConfig)
return &FSBasedRawLedger{blockStore}
}
// NewKVLedger constructs new `KVLedger`
func NewKVLedger(conf *Conf) (*KVLedger, error) {
logger.Debugf("Creating KVLedger using config: ", conf)
attrsToIndex := []blkstorage.IndexableAttr{
blkstorage.IndexableAttrBlockHash,
blkstorage.IndexableAttrBlockNum,
blkstorage.IndexableAttrTxID,
blkstorage.IndexableAttrBlockNumTranNum,
}
indexConfig := &blkstorage.IndexConfig{AttrsToIndex: attrsToIndex}
blockStorageConf := fsblkstorage.NewConf(conf.blockStorageDir, conf.maxBlockfileSize)
blockStore := fsblkstorage.NewFsBlockStore(blockStorageConf, indexConfig)
//State and History database managers
var txmgmt txmgr.TxMgr
var historymgmt history.HistMgr
if ledgerconfig.IsCouchDBEnabled() == true {
//By default we can talk to CouchDB with empty id and pw (""), or you can add your own id and password to talk to a secured CouchDB
logger.Debugf("===COUCHDB=== NewKVLedger() Using CouchDB instead of RocksDB...hardcoding and passing connection config for now")
couchDBDef := ledgerconfig.GetCouchDBDefinition()
//create new transaction manager based on couchDB
txmgmt = couchdbtxmgmt.NewCouchDBTxMgr(&couchdbtxmgmt.Conf{DBPath: conf.txMgrDBPath},
couchDBDef.URL, //couchDB connection URL
"system", //couchDB db name matches ledger name, TODO for now use system ledger, eventually allow passing in subledger name
couchDBDef.Username, //enter couchDB id here
couchDBDef.Password) //enter couchDB pw here
} else {
// Fall back to using goleveldb lockbased transaction manager
db := stateleveldb.NewVersionedDBProvider(&stateleveldb.Conf{DBPath: conf.txMgrDBPath}).GetDBHandle("Default")
txmgmt = lockbasedtxmgr.NewLockBasedTxMgr(db)
}
if ledgerconfig.IsHistoryDBEnabled() == true {
logger.Debugf("===HISTORYDB=== NewKVLedger() Using CouchDB for transaction history database")
couchDBDef := ledgerconfig.GetCouchDBDefinition()
historymgmt = history.NewCouchDBHistMgr(
couchDBDef.URL, //couchDB connection URL
"system_history", //couchDB db name matches ledger name, TODO for now use system_history ledger, eventually allow passing in subledger name
couchDBDef.Username, //enter couchDB id here
couchDBDef.Password) //enter couchDB pw here
}
l := &KVLedger{blockStore, txmgmt, historymgmt}
if err := recoverStateDB(l); err != nil {
panic(fmt.Errorf(`Error during state DB recovery:%s`, err))
}
return l, nil
}