Examples with GenesisStakingBlock org.aion.zero.impl.types.GenesisStakingBlock used on opensource projects

Example 1 with GenesisStakingBlock

use of org.aion.zero.impl.types.GenesisStakingBlock in project aion by aionnetwork.

the class AionBlockchainImpl method isValid.

public boolean isValid(BlockHeader header) {
    /*
         * The block header should already be validated at this point by P2P or mining,
         * but we are including the validation in case future import paths forget to add it.
         */
    if (!this.headerValidator.validate(header, LOG)) {
        return false;
    }
    Block[] threeGenParents = repository.getBlockStore().getThreeGenerationBlocksByHashWithInfo(header.getParentHash());
    Block parentBlock = threeGenParents[0];
    if (parentBlock == null) {
        return false;
    }
    Block grandparentBlock = threeGenParents[1];
    Block greatGrandparentBlock = threeGenParents[2];
    if (header.getSealType() == Seal.PROOF_OF_WORK) {
        if (forkUtility.isUnityForkActive(header.getNumber())) {
            if (grandparentBlock == null || greatGrandparentBlock == null) {
                return false;
            }
            return unityParentBlockHeaderValidator.validate(header, parentBlock.getHeader(), LOG, null) && unityGreatGrandParentBlockHeaderValidator.validate(grandparentBlock.getHeader(), greatGrandparentBlock.getHeader(), header, LOG);
        } else {
            return preUnityParentBlockHeaderValidator.validate(header, parentBlock.getHeader(), LOG, null) && preUnityGrandParentBlockHeaderValidator.validate(parentBlock.getHeader(), grandparentBlock == null ? null : grandparentBlock.getHeader(), header, LOG);
        }
    } else if (header.getSealType() == Seal.PROOF_OF_STAKE) {
        if (!forkUtility.isUnityForkActive(header.getNumber())) {
            LOG.warn("Trying to import a Staking block when the Unity fork is not active.");
            return false;
        }
        if (grandparentBlock == null) {
            LOG.warn("Staking block {} cannot find its grandparent", header.getNumber());
            return false;
        }
        if (forkUtility.isUnityForkBlock(parentBlock.getNumber())) {
            BigInteger expectedDiff = calculateFirstPoSDifficultyAtBlock(parentBlock);
            if (!expectedDiff.equals(header.getDifficultyBI())) {
                return false;
            }
            grandparentBlock = new GenesisStakingBlock(expectedDiff);
        } else if (forkUtility.isNonceForkBlock(parentBlock.getNumber())) {
            BigInteger expectedDiff = calculateFirstPoSDifficultyAtBlock(parentBlock);
            if (!expectedDiff.equals(header.getDifficultyBI())) {
                return false;
            }
        }
        BigInteger stake = null;
        try {
            stake = getStakingContractHelper().getEffectiveStake(new AionAddress(AddressSpecs.computeA0Address(((StakingBlockHeader) header).getSigningPublicKey())), ((StakingBlockHeader) header).getCoinbase(), parentBlock);
        } catch (Exception e) {
            LOG.error("Shutdown due to a fatal error encountered while getting the effective stake.", e);
            System.exit(SystemExitCodes.FATAL_VM_ERROR);
        }
        boolean result = unityParentBlockHeaderValidator.validate(header, parentBlock.getHeader(), LOG, stake);
        if (result) {
            if (forkUtility.isSignatureSwapForkActive(header.getNumber())) {
                result = vrfProofValidator.validate(parentBlock.getHeader(), grandparentBlock.getHeader(), header, LOG) && difficultyValidateAfterSeedNonceFork(grandparentBlock.getHeader(), greatGrandparentBlock.getHeader(), header);
            } else if (forkUtility.isNonceForkActive(header.getNumber())) {
                result = nonceSeedValidator.validate(grandparentBlock.getHeader(), parentBlock.getHeader(), header, LOG) && difficultyValidateAfterSeedNonceFork(grandparentBlock.getHeader(), greatGrandparentBlock.getHeader(), header);
            } else {
                result = unityGreatGrandParentBlockHeaderValidator.validate(grandparentBlock.getHeader(), greatGrandparentBlock.getHeader(), header, LOG);
            }
        }
        return result;
    } else {
        LOG.debug("Invalid header seal type!");
        return false;
    }
}