Function dumpdb

src/rpc/rpcmisc.cpp:432–486

Value dumpdb(const Array& params, bool fHelp) {
    if (fHelp || params.size() > 2)
        throw runtime_error(
            "dumpdb \"[key_prefix_type]\" \"[file_path]\"\n"
            "\ndump db data to file\n"
            "\nArguments:\n"
            "1. \"key_prefix_type\"   (string, optional) the data key prefix type, * is all data, default is *\n"
            "2. \"file_path\"       (string, optional) the output file path, if empty output to stdout, default is empty.\n"
            "\nResult:\n"
            "\nExamples:\n"
            + HelpExampleCli("dumpdb", "") + "\nAs json rpc\n" + HelpExampleRpc("dumpdb", "")
        );

    string prefixTypeStr = "";
    if (params.size() > 0)
        prefixTypeStr = params[0].get_str();
    string filePath = "";
    if (params.size() > 1)
        filePath = params[1].get_str();

    struct FileCloser {
        FILE *file = nullptr;
        ~FileCloser() {
            if (file != nullptr) {
                fclose(file);
                file = nullptr;
            }
        }
    };

    FILE *file = nullptr;
    FileCloser fileCloser;
    if (!filePath.empty()) {
        file = fopen(filePath.c_str(), "w");
        if (file == nullptr) {
            throw JSONRPCError(RPC_INVALID_PARAMS, strprintf("opten file error! file=%s",
                filePath));
        }
        fileCloser.file = file;
    } else {
        file = stdout;
    }

    if (!prefixTypeStr.empty() && prefixTypeStr != "*") {
        dbk::PrefixType prefixType = dbk::ParseKeyPrefixType(prefixTypeStr);
        if (prefixType == dbk::EMPTY)
            throw JSONRPCError(RPC_INVALID_PARAMS, strprintf("unsupported db data key prefix type=%s",
                prefixTypeStr));
        DumpDbOne(file, prefixType, prefixTypeStr);
    } else {
        DumpDbAll(file);
    }

    return Object();
}

template<int32_t PREFIX_TYPE, typename KeyType, typename ValueType>
Object UndoLogToJson(CCompositeKVCache<PREFIX_TYPE, KeyType, ValueType> &cache, const CDbOpLog &opLog) {