// Initialize Admin Block Chain from database
func initAChain() {
//Initialize the Admin Chain ID
achain = new(common.AdminChain)
achain.ChainID = new(common.Hash)
achain.ChainID.SetBytes(common.ADMIN_CHAINID)
// get all aBlocks from db
aBlocks, _ := db.FetchAllABlocks()
sort.Sort(util.ByABlockIDAccending(aBlocks))
// double check the block ids
for i := 0; i < len(aBlocks); i = i + 1 {
if uint32(i) != aBlocks[i].Header.DBHeight {
panic(errors.New("BlockID does not equal index for chain:" + achain.ChainID.String() + " block:" + fmt.Sprintf("%v", aBlocks[i].Header.DBHeight)))
}
if !validateDBSignature(&aBlocks[i], dchain) {
panic(errors.New("No valid signature found in Admin Block = " + fmt.Sprintf("%s\n", spew.Sdump(aBlocks[i]))))
}
}
//Create an empty block and append to the chain
if len(aBlocks) == 0 || dchain.NextDBHeight == 0 {
achain.NextBlockHeight = 0
achain.NextBlock, _ = common.CreateAdminBlock(achain, nil, 10)
} else {
// Entry Credit Chain should have the same height as the dir chain
achain.NextBlockHeight = dchain.NextDBHeight
achain.NextBlock, _ = common.CreateAdminBlock(achain, &aBlocks[achain.NextBlockHeight-1], 10)
}
exportAChain(achain)
}
// Seals the current open block, store it in db and create the next open block
func newAdminBlock(chain *common.AdminChain) *common.AdminBlock {
// acquire the last block
block := chain.NextBlock
if chain.NextBlockHeight != dchain.NextDBHeight {
panic("Admin Block height does not match Directory Block height:" + string(dchain.NextDBHeight))
}
block.Header.MessageCount = uint32(len(block.ABEntries))
block.Header.BodySize = uint32(block.MarshalledSize() - block.Header.MarshalledSize())
_, err := block.PartialHash()
if err != nil {
panic(err)
}
_, err = block.LedgerKeyMR()
if err != nil {
panic(err)
}
// Create the block and add a new block for new coming entries
chain.BlockMutex.Lock()
chain.NextBlockHeight++
chain.NextBlock, err = common.CreateAdminBlock(chain, block, 10)
if err != nil {
panic(err)
}
chain.BlockMutex.Unlock()
//Store the block in db
db.ProcessABlockBatch(block)
procLog.Infof("Admin Block: block " + strconv.FormatUint(uint64(block.Header.DBHeight), 10) + " created for chain: " + chain.ChainID.String())
return block
}