Exemple #1
0
func exportDChain(chain *common.DChain) {
	if len(chain.Blocks) == 0 || procLog.Level() < factomlog.Info {
		//log.Println("no blocks to save for chain: " + string (*chain.ChainID))
		return
	}

	// get all ecBlocks from db
	dBlocks, _ := db.FetchAllDBlocks()
	sort.Sort(util.ByDBlockIDAccending(dBlocks))

	for _, block := range dBlocks {

		data, err := block.MarshalBinary()
		if err != nil {
			panic(err)
		}

		strChainID := chain.ChainID.String()
		if fileNotExists(dataStorePath + strChainID) {
			err := os.MkdirAll(dataStorePath+strChainID, 0777)
			if err == nil {
				procLog.Info("Created directory " + dataStorePath + strChainID)
			} else {
				procLog.Error(err)
			}
		}
		err = ioutil.WriteFile(fmt.Sprintf(dataStorePath+strChainID+"/store.%09d.block", block.Header.DBHeight), data, 0777)
		if err != nil {
			panic(err)
		}
	}
}
Exemple #2
0
// 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())
	}

}