info

var DefaultInfoResponseFiller = func(firstStreamableBlock *pbbstream.Block, resp *pbfirehose.InfoResponse, validate bool) error {
	resp.FirstStreamableBlockId = firstStreamableBlock.Id

	networksWithFirehose := networks.GetFirehoseRegistry()

	shortTypeURL := strings.TrimPrefix(firstStreamableBlock.Payload.TypeUrl, "type.googleapis.com/")
	for _, protocol := range networksWithFirehose {
		if protocol.Firehose.BlockType == shortTypeURL {
			if resp.BlockIdEncoding == pbfirehose.InfoResponse_BLOCK_ID_ENCODING_UNSET {
				resp.BlockIdEncoding = BlockIdEncodingForNetwork(protocol)
			}
			break
		}
	}

	if !validate {
		if resp.ChainName == "" {

			if chain := networksWithFirehose.FindByGenesisBlock(firstStreamableBlock.Number, firstStreamableBlock.Id); chain != nil {
				resp.ChainName = chain.ID
				if len(resp.ChainNameAliases) == 0 {
					resp.ChainNameAliases = chain.Aliases
				}
			}
		}
		return nil
	}

	if resp.ChainName != "" {
		if chain := networksWithFirehose.Find(resp.ChainName); chain != nil {
			if firstStreamableBlock.Number == uint64(chain.Firehose.FirstStreamableBlock.Height) && nox(chain.Firehose.FirstStreamableBlock.ID) != nox(firstStreamableBlock.Id) {
				return fmt.Errorf("chain name defined in flag: %q inconsistent with the genesis block ID %q (expected: %q)", resp.ChainName, nox(firstStreamableBlock.Id), nox(chain.Firehose.FirstStreamableBlock.ID))
			}
			resp.ChainName = chain.ID
			if len(resp.ChainNameAliases) == 0 {
				resp.ChainNameAliases = chain.Aliases
			}
		} else if chain := networksWithFirehose.FindByFirstStreamableBlock(firstStreamableBlock.Number, firstStreamableBlock.Id); chain != nil {
			return fmt.Errorf("chain name defined in flag: %q inconsistent with the one discovered from genesis block %q", resp.ChainName, chain.ID)
		}
	} else {
		if chain := networksWithFirehose.FindByFirstStreamableBlock(firstStreamableBlock.Number, firstStreamableBlock.Id); chain != nil {
			resp.ChainName = chain.ID
			if len(resp.ChainNameAliases) == 0 {
				resp.ChainNameAliases = chain.Aliases
			}
		}
	}

	if firstStreamableBlock.Payload.TypeUrl == "type.googleapis.com/sf.ethereum.type.v2.Block" {
		var seenDetailLevel bool
		for _, feature := range resp.BlockFeatures {
			if feature == "base" || feature == "extended" || feature == "hybrid" {
				seenDetailLevel = true
				break
			}
		}
		if !seenDetailLevel {
			return fmt.Errorf("ethereum blocks are used without setting detail level in 'advertise-block-features': expected one of 'base', 'extended' or 'hybrid' (or use 'firehose-ethereum' binary instead to serve this chain and get automatic detection/validation)")
		}
	}

	return nil
}