ClickHouse/utils/zookeeper-remove-by-list/main.cpp

#include <zkutil/ZooKeeper.h>
#include <DB/IO/ReadHelpers.h>
#include <DB/IO/ReadBufferFromFileDescriptor.h>
#include <boost/program_options.hpp>


int main(int argc, char ** argv)
try
{
	boost::program_options::options_description desc("Allowed options");
	desc.add_options()
		("help,h", "produce help message")
		("address,a", boost::program_options::value<std::string>()->required(),
		"addresses of ZooKeeper instances, comma separated. Example: example01e.yandex.ru:2181")
		;

	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 << "Remove nodes in ZooKeeper by list passed in stdin." << std::endl;
		std::cout << "Usage: " << argv[0] << " [options] < list_of_nodes_on_each_line" << std::endl;
		std::cout << desc << std::endl;
		return 1;
	}

	zkutil::ZooKeeper zookeeper(options.at("address").as<std::string>());

	DB::ReadBufferFromFileDescriptor in(STDIN_FILENO);
	std::list<zkutil::ZooKeeper::RemoveFuture> futures;

	std::cerr << "Requested: ";
	while (!in.eof())
	{
		std::string path;
		DB::readEscapedString(path, in);
		DB::assertString("\n", in);
		futures.push_back(zookeeper.asyncRemove(path));
		std::cerr << ".";
	}
	std::cerr << "\n";

	std::cerr << "Done: ";
	for (auto & future : futures)
	{
		try
		{
			future.get();
		}
		catch (...)
		{
			std::cerr << DB::getCurrentExceptionMessage(true) << '\n';
		}
		std::cerr << ".";
	}
	std::cerr << "\n";

	return 0;
}
catch (const Poco::Exception & e)
{
	std::cerr << DB::getCurrentExceptionMessage(true) << '\n';
	throw;
}