mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 10:02:01 +00:00
344 lines
9.6 KiB
C++
344 lines
9.6 KiB
C++
#include "KeeperClient.h"
|
|
#include "Commands.h"
|
|
#include <Client/ReplxxLineReader.h>
|
|
#include <Client/ClientBase.h>
|
|
#include <Common/EventNotifier.h>
|
|
#include <Common/filesystemHelpers.h>
|
|
#include <Common/ZooKeeper/ZooKeeper.h>
|
|
#include <Parsers/parseQuery.h>
|
|
#include <Poco/Util/HelpFormatter.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int BAD_ARGUMENTS;
|
|
}
|
|
|
|
String KeeperClient::executeFourLetterCommand(const String & command)
|
|
{
|
|
/// We need to create a new socket every time because ZooKeeper forcefully shuts down the connection after a four-letter-word command.
|
|
Poco::Net::StreamSocket socket;
|
|
socket.connect(Poco::Net::SocketAddress{zk_args.hosts[0]}, zk_args.connection_timeout_ms * 1000);
|
|
|
|
socket.setReceiveTimeout(zk_args.operation_timeout_ms * 1000);
|
|
socket.setSendTimeout(zk_args.operation_timeout_ms * 1000);
|
|
socket.setNoDelay(true);
|
|
|
|
ReadBufferFromPocoSocket in(socket);
|
|
WriteBufferFromPocoSocket out(socket);
|
|
|
|
out.write(command.data(), command.size());
|
|
out.next();
|
|
|
|
String result;
|
|
readStringUntilEOF(result, in);
|
|
in.next();
|
|
return result;
|
|
}
|
|
|
|
std::vector<String> KeeperClient::getCompletions(const String & prefix) const
|
|
{
|
|
Tokens tokens(prefix.data(), prefix.data() + prefix.size(), 0, false);
|
|
IParser::Pos pos(tokens, 0);
|
|
|
|
if (pos->type != TokenType::BareWord)
|
|
return registered_commands_and_four_letter_words;
|
|
|
|
++pos;
|
|
if (pos->isEnd())
|
|
return registered_commands_and_four_letter_words;
|
|
|
|
ParserToken{TokenType::Whitespace}.ignore(pos);
|
|
|
|
std::vector<String> result;
|
|
String string_path;
|
|
Expected expected;
|
|
if (!parseKeeperPath(pos, expected, string_path))
|
|
string_path = cwd;
|
|
|
|
if (!pos->isEnd())
|
|
return result;
|
|
|
|
fs::path path = string_path;
|
|
String parent_path;
|
|
if (string_path.ends_with("/"))
|
|
parent_path = getAbsolutePath(string_path);
|
|
else
|
|
parent_path = getAbsolutePath(path.parent_path());
|
|
|
|
try
|
|
{
|
|
for (const auto & child : zookeeper->getChildren(parent_path))
|
|
result.push_back(child);
|
|
}
|
|
catch (Coordination::Exception &) {}
|
|
|
|
std::sort(result.begin(), result.end());
|
|
|
|
return result;
|
|
}
|
|
|
|
void KeeperClient::askConfirmation(const String & prompt, std::function<void()> && callback)
|
|
{
|
|
std::cout << prompt << " Continue?\n";
|
|
need_confirmation = true;
|
|
confirmation_callback = callback;
|
|
}
|
|
|
|
fs::path KeeperClient::getAbsolutePath(const String & relative) const
|
|
{
|
|
String result;
|
|
if (relative.starts_with('/'))
|
|
result = fs::weakly_canonical(relative);
|
|
else
|
|
result = fs::weakly_canonical(cwd / relative);
|
|
|
|
if (result.ends_with('/') && result.size() > 1)
|
|
result.pop_back();
|
|
|
|
return result;
|
|
}
|
|
|
|
void KeeperClient::loadCommands(std::vector<Command> && new_commands)
|
|
{
|
|
for (const auto & command : new_commands)
|
|
{
|
|
String name = command->getName();
|
|
commands.insert({name, command});
|
|
registered_commands_and_four_letter_words.push_back(std::move(name));
|
|
}
|
|
|
|
for (const auto & command : four_letter_word_commands)
|
|
registered_commands_and_four_letter_words.push_back(command);
|
|
|
|
std::sort(registered_commands_and_four_letter_words.begin(), registered_commands_and_four_letter_words.end());
|
|
}
|
|
|
|
void KeeperClient::defineOptions(Poco::Util::OptionSet & options)
|
|
{
|
|
Poco::Util::Application::defineOptions(options);
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("help", "", "show help and exit")
|
|
.binding("help"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("host", "h", "server hostname. default `localhost`")
|
|
.argument("<host>")
|
|
.binding("host"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("port", "p", "server port. default `2181`")
|
|
.argument("<port>")
|
|
.binding("port"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("query", "q", "will execute given query, then exit.")
|
|
.argument("<query>")
|
|
.binding("query"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("connection-timeout", "", "set connection timeout in seconds. default 10s.")
|
|
.argument("<seconds>")
|
|
.binding("connection-timeout"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("session-timeout", "", "set session timeout in seconds. default 10s.")
|
|
.argument("<seconds>")
|
|
.binding("session-timeout"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("operation-timeout", "", "set operation timeout in seconds. default 10s.")
|
|
.argument("<seconds>")
|
|
.binding("operation-timeout"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("history-file", "", "set path of history file. default `~/.keeper-client-history`")
|
|
.argument("<file>")
|
|
.binding("history-file"));
|
|
|
|
options.addOption(
|
|
Poco::Util::Option("log-level", "", "set log level")
|
|
.argument("<level>")
|
|
.binding("log-level"));
|
|
}
|
|
|
|
void KeeperClient::initialize(Poco::Util::Application & /* self */)
|
|
{
|
|
suggest.setCompletionsCallback(
|
|
[&](const String & prefix, size_t /* prefix_length */) { return getCompletions(prefix); });
|
|
|
|
loadCommands({
|
|
std::make_shared<LSCommand>(),
|
|
std::make_shared<CDCommand>(),
|
|
std::make_shared<SetCommand>(),
|
|
std::make_shared<CreateCommand>(),
|
|
std::make_shared<GetCommand>(),
|
|
std::make_shared<RMCommand>(),
|
|
std::make_shared<RMRCommand>(),
|
|
std::make_shared<HelpCommand>(),
|
|
std::make_shared<FourLetterWordCommand>(),
|
|
});
|
|
|
|
String home_path;
|
|
const char * home_path_cstr = getenv("HOME"); // NOLINT(concurrency-mt-unsafe)
|
|
if (home_path_cstr)
|
|
home_path = home_path_cstr;
|
|
|
|
if (config().has("history-file"))
|
|
history_file = config().getString("history-file");
|
|
else
|
|
history_file = home_path + "/.keeper-client-history";
|
|
|
|
if (!history_file.empty() && !fs::exists(history_file))
|
|
{
|
|
try
|
|
{
|
|
FS::createFile(history_file);
|
|
}
|
|
catch (const ErrnoException & e)
|
|
{
|
|
if (e.getErrno() != EEXIST)
|
|
throw;
|
|
}
|
|
}
|
|
|
|
Poco::Logger::root().setLevel(config().getString("log-level", "error"));
|
|
|
|
EventNotifier::init();
|
|
}
|
|
|
|
void KeeperClient::executeQuery(const String & query)
|
|
{
|
|
std::vector<String> queries;
|
|
boost::algorithm::split(queries, query, boost::is_any_of(";"));
|
|
|
|
for (const auto & query_text : queries)
|
|
{
|
|
if (!query_text.empty())
|
|
processQueryText(query_text);
|
|
}
|
|
}
|
|
|
|
bool KeeperClient::processQueryText(const String & text)
|
|
{
|
|
if (exit_strings.find(text) != exit_strings.end())
|
|
return false;
|
|
|
|
try
|
|
{
|
|
if (need_confirmation)
|
|
{
|
|
need_confirmation = false;
|
|
if (text.size() == 1 && (text == "y" || text == "Y"))
|
|
confirmation_callback();
|
|
return true;
|
|
}
|
|
|
|
KeeperParser parser;
|
|
String message;
|
|
const char * begin = text.data();
|
|
ASTPtr res = tryParseQuery(parser, begin, begin + text.size(), message, true, "", false, 0, 0, false);
|
|
|
|
if (!res)
|
|
{
|
|
std::cerr << message << "\n";
|
|
return true;
|
|
}
|
|
|
|
auto * query = res->as<ASTKeeperQuery>();
|
|
|
|
auto command = KeeperClient::commands.find(query->command);
|
|
command->second->execute(query, this);
|
|
}
|
|
catch (Coordination::Exception & err)
|
|
{
|
|
std::cerr << err.message() << "\n";
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void KeeperClient::runInteractive()
|
|
{
|
|
|
|
LineReader::Patterns query_extenders = {"\\"};
|
|
LineReader::Patterns query_delimiters = {};
|
|
|
|
ReplxxLineReader lr(suggest, history_file, false, query_extenders, query_delimiters, {});
|
|
lr.enableBracketedPaste();
|
|
|
|
while (true)
|
|
{
|
|
String prompt;
|
|
if (need_confirmation)
|
|
prompt = "[y/n] ";
|
|
else
|
|
prompt = cwd.string() + " :) ";
|
|
|
|
auto input = lr.readLine(prompt, ":-] ");
|
|
if (input.empty())
|
|
break;
|
|
|
|
if (!processQueryText(input))
|
|
break;
|
|
}
|
|
}
|
|
|
|
int KeeperClient::main(const std::vector<String> & /* args */)
|
|
{
|
|
if (config().hasOption("help"))
|
|
{
|
|
Poco::Util::HelpFormatter help_formatter(KeeperClient::options());
|
|
auto header_str = fmt::format("{} [OPTION]\n", commandName());
|
|
help_formatter.setHeader(header_str);
|
|
help_formatter.format(std::cout);
|
|
return 0;
|
|
}
|
|
|
|
auto host = config().getString("host", "localhost");
|
|
auto port = config().getString("port", "2181");
|
|
zk_args.hosts = {host + ":" + port};
|
|
zk_args.connection_timeout_ms = config().getInt("connection-timeout", 10) * 1000;
|
|
zk_args.session_timeout_ms = config().getInt("session-timeout", 10) * 1000;
|
|
zk_args.operation_timeout_ms = config().getInt("operation-timeout", 10) * 1000;
|
|
zookeeper = std::make_unique<zkutil::ZooKeeper>(zk_args);
|
|
|
|
if (config().has("query"))
|
|
executeQuery(config().getString("query"));
|
|
else
|
|
runInteractive();
|
|
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
int mainEntryClickHouseKeeperClient(int argc, char ** argv)
|
|
{
|
|
try
|
|
{
|
|
DB::KeeperClient client;
|
|
client.init(argc, argv);
|
|
return client.run();
|
|
}
|
|
catch (const DB::Exception & e)
|
|
{
|
|
std::cerr << DB::getExceptionMessage(e, false) << std::endl;
|
|
return 1;
|
|
}
|
|
catch (const boost::program_options::error & e)
|
|
{
|
|
std::cerr << "Bad arguments: " << e.what() << std::endl;
|
|
return DB::ErrorCodes::BAD_ARGUMENTS;
|
|
}
|
|
catch (...)
|
|
{
|
|
std::cerr << DB::getCurrentExceptionMessage(true) << std::endl;
|
|
return 1;
|
|
}
|
|
}
|