// Initialize Directory Block Chain from database
func initDChain() {
dchain = new(common.DChain)
//Initialize the Directory Block Chain ID
dchain.ChainID = new(common.Hash)
barray := common.D_CHAINID
dchain.ChainID.SetBytes(barray)
// get all dBlocks from db
dBlocks, _ := db.FetchAllDBlocks()
sort.Sort(util.ByDBlockIDAccending(dBlocks))
dchain.Blocks = make([]*common.DirectoryBlock, len(dBlocks), len(dBlocks)+1)
for i := 0; i < len(dBlocks); i = i + 1 {
if dBlocks[i].Header.DBHeight != uint32(i) {
panic("Error in initializing dChain:" + dchain.ChainID.String())
}
dBlocks[i].Chain = dchain
dBlocks[i].IsSealed = true
dBlocks[i].IsSavedInDB = true
dchain.Blocks[i] = &dBlocks[i]
}
// double check the block ids
for i := 0; i < len(dchain.Blocks); i = i + 1 {
if uint32(i) != dchain.Blocks[i].Header.DBHeight {
panic(errors.New("BlockID does not equal index for chain:" + dchain.ChainID.String() + " block:" + fmt.Sprintf("%v", dchain.Blocks[i].Header.DBHeight)))
}
}
//Create an empty block and append to the chain
if len(dchain.Blocks) == 0 {
dchain.NextDBHeight = 0
dchain.NextBlock, _ = common.CreateDBlock(dchain, nil, 10)
} else {
dchain.NextDBHeight = uint32(len(dchain.Blocks))
dchain.NextBlock, _ = common.CreateDBlock(dchain, dchain.Blocks[len(dchain.Blocks)-1], 10)
// Update dir block height cache in db
db.UpdateBlockHeightCache(dchain.NextDBHeight-1, dchain.NextBlock.Header.PrevLedgerKeyMR)
}
exportDChain(dchain)
//Double check the sealed flag
if dchain.NextBlock.IsSealed == true {
panic("dchain.Blocks[dchain.NextBlockID].IsSealed for chain:" + dchain.ChainID.String())
}
}
// Seals the current open block, store it in db and create the next open block
func newDirectoryBlock(chain *common.DChain) *common.DirectoryBlock {
procLog.Debug("**** new Dir Block")
// acquire the last block
block := chain.NextBlock
if devNet {
block.Header.NetworkID = common.NETWORK_ID_TEST
} else {
block.Header.NetworkID = common.NETWORK_ID_EB
}
// Create the block add a new block for new coming entries
chain.BlockMutex.Lock()
block.Header.BlockCount = uint32(len(block.DBEntries))
// Calculate Merkle Root for FBlock and store it in header
if block.Header.BodyMR == nil {
block.Header.BodyMR, _ = block.BuildBodyMR()
// Factoid1 block not in the right place...
}
block.IsSealed = true
chain.AddDBlockToDChain(block)
chain.NextDBHeight++
chain.NextBlock, _ = common.CreateDBlock(chain, block, 10)
chain.BlockMutex.Unlock()
block.DBHash, _ = common.CreateHash(block)
block.BuildKeyMerkleRoot()
//Store the block in db
db.ProcessDBlockBatch(block)
// Initialize the dirBlockInfo obj in db
db.InsertDirBlockInfo(common.NewDirBlockInfoFromDBlock(block))
anchor.UpdateDirBlockInfoMap(common.NewDirBlockInfoFromDBlock(block))
procLog.Info("DirectoryBlock: block" + strconv.FormatUint(uint64(block.Header.DBHeight), 10) + " created for directory block chain: " + chain.ChainID.String())
// To be improved in milestone 2
SignDirectoryBlock()
return block
}