Removed useless tool

utils/CMakeLists.txt

@@ -21,7 +21,6 @@ if (NOT DEFINED ENABLE_UTILS OR ENABLE_UTILS)
     add_subdirectory (corrector_utf8)
     add_subdirectory (zookeeper-cli)
     add_subdirectory (zookeeper-dump-tree)
-    add_subdirectory (zookeeper-copy-tree)
     add_subdirectory (zookeeper-remove-by-list)
     add_subdirectory (zookeeper-create-entry-to-download-part)
     add_subdirectory (zookeeper-adjust-block-numbers-to-parts)

utils/zookeeper-copy-tree/CMakeLists.txt

@@ -1,2 +0,0 @@
-add_executable (zookeeper-copy-tree main.cpp ${SRCS})
-target_link_libraries(zookeeper-copy-tree PRIVATE clickhouse_common_zookeeper clickhouse_common_io ${Boost_PROGRAM_OPTIONS_LIBRARY})

utils/zookeeper-copy-tree/main.cpp

@@ -1,149 +0,0 @@
-#include <Common/ZooKeeper/ZooKeeper.h>
-#include <Common/ZooKeeper/KeeperException.h>
-#include <Common/Exception.h>
-
-#include <boost/program_options.hpp>
-
-#include <iostream>
-
-namespace DB
-{
-namespace ErrorCodes
-{
-
-extern const int UNEXPECTED_NODE_IN_ZOOKEEPER;
-
-}
-}
-
-int main(int argc, char ** argv)
-try
-{
-    boost::program_options::options_description desc("Allowed options");
-    desc.add_options()
-        ("help,h", "produce help message")
-        ("from", boost::program_options::value<std::string>()->required(),
-            "addresses of source ZooKeeper instances, comma separated. Example: example01e.yandex.ru:2181")
-        ("from-path", boost::program_options::value<std::string>()->required(),
-            "where to copy from")
-        ("to", boost::program_options::value<std::string>()->required(),
-            "addresses of destination ZooKeeper instances, comma separated. Example: example01e.yandex.ru:2181")
-        ("to-path", boost::program_options::value<std::string>()->required(),
-            "where to copy to")
-    ;
-
-    boost::program_options::variables_map options;
-    boost::program_options::store(boost::program_options::parse_command_line(argc, argv, desc), options);
-
-    if (options.count("help"))
-    {
-        std::cout << "Copy a ZooKeeper tree to another cluster." << std::endl;
-        std::cout << "Usage: " << argv[0] << " [options]" << std::endl;
-        std::cout << "WARNING: it is almost useless as it is impossible to corretly copy sequential nodes" << std::endl;
-        std::cout << desc << std::endl;
-        return 1;
-    }
-
-    zkutil::ZooKeeper from_zookeeper(options.at("from").as<std::string>());
-    zkutil::ZooKeeper to_zookeeper(options.at("to").as<std::string>());
-
-    std::string from_path = options.at("from-path").as<std::string>();
-    std::string to_path = options.at("to-path").as<std::string>();
-
-    if (to_zookeeper.exists(to_path))
-        throw DB::Exception("Destination path: " + to_path + " already exists, aborting.",
-            DB::ErrorCodes::UNEXPECTED_NODE_IN_ZOOKEEPER);
-
-    struct Node
-    {
-        Node(
-            std::string path_,
-            std::future<Coordination::GetResponse> get_future_,
-            std::future<Coordination::ListResponse> children_future_,
-            Node * parent_)
-            : path(std::move(path_))
-            , get_future(std::move(get_future_))
-            , children_future(std::move(children_future_))
-            , parent(parent_)
-        {
-        }
-
-        std::string path;
-        std::future<Coordination::GetResponse> get_future;
-        std::future<Coordination::ListResponse> children_future;
-
-        Node * parent = nullptr;
-        std::future<Coordination::CreateResponse> create_future;
-        bool created = false;
-        bool deleted = false;
-        bool ephemeral = false;
-    };
-
-    std::list<Node> nodes_queue;
-    nodes_queue.emplace_back(
-        from_path, from_zookeeper.asyncGet(from_path), from_zookeeper.asyncGetChildren(from_path), nullptr);
-
-    to_zookeeper.createAncestors(to_path);
-
-    for (auto it = nodes_queue.begin(); it != nodes_queue.end(); ++it)
-    {
-        Coordination::GetResponse get_response;
-        Coordination::ListResponse children_response;
-        try
-        {
-            get_response = it->get_future.get();
-            children_response = it->children_future.get();
-        }
-        catch (const Coordination::Exception & e)
-        {
-            if (e.code == Coordination::ZNONODE)
-            {
-                it->deleted = true;
-                continue;
-            }
-            throw;
-        }
-
-        if (get_response.stat.ephemeralOwner)
-        {
-            it->ephemeral = true;
-            continue;
-        }
-
-        if (it->parent && !it->parent->created)
-        {
-            it->parent->create_future.get();
-            it->parent->created = true;
-            std::cerr << it->parent->path << " copied!" << std::endl;
-        }
-
-        std::string new_path = it->path;
-        new_path.replace(0, from_path.length(), to_path);
-        it->create_future = to_zookeeper.asyncCreate(new_path, get_response.data, zkutil::CreateMode::Persistent);
-        get_response.data.clear();
-        get_response.data.shrink_to_fit();
-
-        for (const auto & name : children_response.names)
-        {
-            std::string child_path = it->path == "/" ? it->path + name : it->path + '/' + name;
-            nodes_queue.emplace_back(
-                child_path, from_zookeeper.asyncGet(child_path), from_zookeeper.asyncGetChildren(child_path),
-                &(*it));
-        }
-    }
-
-    for (auto it = nodes_queue.begin(); it != nodes_queue.end(); ++it)
-    {
-        if (!it->created && !it->deleted && !it->ephemeral)
-        {
-            it->create_future.get();
-            it->created = true;
-            std::cerr << it->path << " copied!" << std::endl;
-        }
-    }
-}
-catch (...)
-{
-    std::cerr << DB::getCurrentExceptionMessage(true) << '\n';
-    throw;
-}