org.hyperledger.fabric.client.BlockEventsBuilder Maven / Gradle / Ivy

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/*
 * Copyright 2022 IBM All Rights Reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

package org.hyperledger.fabric.client;

import com.google.protobuf.ByteString;
import java.util.Objects;
import org.hyperledger.fabric.protos.common.Envelope;

final class BlockEventsBuilder implements BlockEventsRequest.Builder {
    private final GatewayClient client;
    private final SigningIdentity signingIdentity;
    private final BlockEventsEnvelopeBuilder envelopeBuilder;

    BlockEventsBuilder(
            final GatewayClient client,
            final SigningIdentity signingIdentity,
            final String channelName,
            final ByteString tlsCertificateHash) {
        Objects.requireNonNull(channelName, "channel name");

        this.client = client;
        this.signingIdentity = signingIdentity;
        this.envelopeBuilder = new BlockEventsEnvelopeBuilder(signingIdentity, channelName, tlsCertificateHash);
    }

    @Override
    public BlockEventsBuilder startBlock(final long blockNumber) {
        envelopeBuilder.startBlock(blockNumber);
        return this;
    }

    @Override
    public BlockEventsBuilder checkpoint(final Checkpoint checkpoint) {
        checkpoint.getBlockNumber().ifPresent(envelopeBuilder::startBlock);
        return this;
    }

    @Override
    public BlockEventsRequest build() {
        Envelope request = envelopeBuilder.build();
        return new BlockEventsRequestImpl(client, signingIdentity, request);
    }
}