Examples with HashObject com.hedera.mirror.importer.reader.HashObject used on opensource projects

Example 1 with HashObject

use of com.hedera.mirror.importer.reader.HashObject in project hedera-mirror-node by hashgraph.

the class RecordFileReaderImplV5 method readBody.

private void readBody(ValidatedDataInputStream vdis, DigestInputStream metadataDigestInputStream, RecordFile recordFile) throws IOException {
    String filename = recordFile.getName();
    // object stream version
    vdis.readInt();
    // start object running hash
    HashObject startHashObject = new HashObject(vdis, DIGEST_ALGORITHM);
    // metadata hash is not calculated on record stream objects
    metadataDigestInputStream.on(false);
    long hashObjectClassId = startHashObject.getClassId();
    int count = 0;
    long consensusStart = 0;
    List<RecordItem> items = new ArrayList<>();
    RecordItem lastRecordItem = null;
    // read record stream objects
    while (!isHashObject(vdis, hashObjectClassId)) {
        RecordStreamObject recordStreamObject = new RecordStreamObject(vdis, recordFile.getHapiVersion(), count);
        var recordItem = RecordItem.builder().hapiVersion(recordFile.getHapiVersion()).previous(lastRecordItem).recordBytes(recordStreamObject.recordBytes).transactionIndex(count).transactionBytes(recordStreamObject.transactionBytes).build();
        items.add(recordItem);
        if (count == 0) {
            consensusStart = recordItem.getConsensusTimestamp();
        }
        lastRecordItem = recordItem;
        count++;
    }
    if (count == 0) {
        throw new InvalidStreamFileException("No record stream objects in record file " + filename);
    }
    long consensusEnd = lastRecordItem.getConsensusTimestamp();
    // end object running hash, metadata hash is calculated on it
    metadataDigestInputStream.on(true);
    HashObject endHashObject = new HashObject(vdis, DIGEST_ALGORITHM);
    if (vdis.available() != 0) {
        throw new InvalidStreamFileException("Extra data discovered in record file " + filename);
    }
    recordFile.setCount((long) count);
    recordFile.setConsensusEnd(consensusEnd);
    recordFile.setConsensusStart(consensusStart);
    recordFile.setHash(Hex.encodeHexString(endHashObject.getHash()));
    recordFile.setItems(Flux.fromIterable(items));
    recordFile.setPreviousHash(Hex.encodeHexString(startHashObject.getHash()));
}

Example 2 with HashObject

use of com.hedera.mirror.importer.reader.HashObject in project hedera-mirror-node by hashgraph.

the class SignatureFileReaderV5 method read.

@Override
public FileStreamSignature read(StreamFileData signatureFileData) {
    String filename = signatureFileData.getFilename();
    try (ValidatedDataInputStream vdis = new ValidatedDataInputStream(signatureFileData.getInputStream(), filename)) {
        vdis.readByte(SIGNATURE_FILE_FORMAT_VERSION, "fileVersion");
        // Read the objectStreamSignatureVersion, which is not used
        vdis.readInt();
        HashObject fileHashObject = new HashObject(vdis, "entireFile", SHA384);
        SignatureObject fileHashSignatureObject = new SignatureObject(vdis, "entireFile");
        HashObject metadataHashObject = new HashObject(vdis, "metadata", SHA384);
        SignatureObject metadataHashSignatureObject = new SignatureObject(vdis, "metadata");
        if (vdis.available() != 0) {
            throw new SignatureFileParsingException("Extra data discovered in signature file " + filename);
        }
        FileStreamSignature fileStreamSignature = new FileStreamSignature();
        fileStreamSignature.setBytes(signatureFileData.getBytes());
        fileStreamSignature.setFileHash(fileHashObject.getHash());
        fileStreamSignature.setFileHashSignature(fileHashSignatureObject.getSignature());
        fileStreamSignature.setFilename(filename);
        fileStreamSignature.setMetadataHash(metadataHashObject.getHash());
        fileStreamSignature.setMetadataHashSignature(metadataHashSignatureObject.getSignature());
        fileStreamSignature.setSignatureType(fileHashSignatureObject.getSignatureType());
        return fileStreamSignature;
    } catch (InvalidStreamFileException | IOException e) {
        throw new SignatureFileParsingException(e);
    }
}