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https://github.com/ClickHouse/ClickHouse.git
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48e9456e75
This will avoid calling Context::addQueryFactoriesInfo() v2: disable it in ClusterCopier::reloadTaskDescription() too v3: just create local context and pass it to the ClusterCopier instead of global context
245 lines
10 KiB
C++
245 lines
10 KiB
C++
#include "ClusterCopierApp.h"
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#include <Common/StatusFile.h>
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#include <Common/TerminalSize.h>
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#include <IO/ConnectionTimeoutsContext.h>
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#include <Formats/registerFormats.h>
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#include <base/scope_guard_safe.h>
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#include <unistd.h>
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#include <filesystem>
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namespace fs = std::filesystem;
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namespace DB
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{
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/// ClusterCopierApp
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void ClusterCopierApp::initialize(Poco::Util::Application & self)
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{
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is_help = config().has("help");
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if (is_help)
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return;
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config_xml_path = config().getString("config-file");
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task_path = config().getString("task-path");
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log_level = config().getString("log-level", "info");
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is_safe_mode = config().has("safe-mode");
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is_status_mode = config().has("status");
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if (config().has("copy-fault-probability"))
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copy_fault_probability = std::max(std::min(config().getDouble("copy-fault-probability"), 1.0), 0.0);
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if (config().has("move-fault-probability"))
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move_fault_probability = std::max(std::min(config().getDouble("move-fault-probability"), 1.0), 0.0);
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base_dir = (config().has("base-dir")) ? config().getString("base-dir") : fs::current_path().string();
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max_table_tries = std::max<size_t>(config().getUInt("max-table-tries", 3), 1);
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max_shard_partition_tries = std::max<size_t>(config().getUInt("max-shard-partition-tries", 3), 1);
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max_shard_partition_piece_tries_for_alter = std::max<size_t>(config().getUInt("max-shard-partition-piece-tries-for-alter", 10), 1);
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retry_delay_ms = std::chrono::milliseconds(std::max<size_t>(config().getUInt("retry-delay-ms", 1000), 100));
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if (config().has("experimental-use-sample-offset"))
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experimental_use_sample_offset = config().getBool("experimental-use-sample-offset");
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// process_id is '<hostname>#<start_timestamp>_<pid>'
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time_t timestamp = Poco::Timestamp().epochTime();
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auto curr_pid = Poco::Process::id();
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process_id = std::to_string(DateLUT::instance().toNumYYYYMMDDhhmmss(timestamp)) + "_" + std::to_string(curr_pid);
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host_id = escapeForFileName(getFQDNOrHostName()) + '#' + process_id;
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process_path = fs::weakly_canonical(fs::path(base_dir) / ("clickhouse-copier_" + process_id));
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fs::create_directories(process_path);
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/// Override variables for BaseDaemon
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if (config().has("log-level"))
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config().setString("logger.level", config().getString("log-level"));
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if (config().has("base-dir") || !config().has("logger.log"))
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config().setString("logger.log", fs::path(process_path) / "log.log");
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if (config().has("base-dir") || !config().has("logger.errorlog"))
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config().setString("logger.errorlog", fs::path(process_path) / "log.err.log");
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Base::initialize(self);
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}
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void ClusterCopierApp::handleHelp(const std::string &, const std::string &)
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{
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uint16_t terminal_width = 0;
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if (isatty(STDIN_FILENO))
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terminal_width = getTerminalWidth();
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Poco::Util::HelpFormatter help_formatter(options());
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if (terminal_width)
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help_formatter.setWidth(terminal_width);
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help_formatter.setCommand(commandName());
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help_formatter.setHeader("Copies tables from one cluster to another");
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help_formatter.setUsage("--config-file <config-file> --task-path <task-path>");
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help_formatter.format(std::cerr);
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stopOptionsProcessing();
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}
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void ClusterCopierApp::defineOptions(Poco::Util::OptionSet & options)
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{
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Base::defineOptions(options);
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options.addOption(Poco::Util::Option("task-path", "", "path to task in ZooKeeper")
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.argument("task-path").binding("task-path"));
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options.addOption(Poco::Util::Option("task-file", "", "path to task file for uploading in ZooKeeper to task-path")
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.argument("task-file").binding("task-file"));
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options.addOption(Poco::Util::Option("task-upload-force", "", "Force upload task-file even node already exists")
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.argument("task-upload-force").binding("task-upload-force"));
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options.addOption(Poco::Util::Option("safe-mode", "", "disables ALTER DROP PARTITION in case of errors")
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.binding("safe-mode"));
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options.addOption(Poco::Util::Option("copy-fault-probability", "", "the copying fails with specified probability (used to test partition state recovering)")
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.argument("copy-fault-probability").binding("copy-fault-probability"));
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options.addOption(Poco::Util::Option("move-fault-probability", "", "the moving fails with specified probability (used to test partition state recovering)")
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.argument("move-fault-probability").binding("move-fault-probability"));
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options.addOption(Poco::Util::Option("log-level", "", "sets log level")
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.argument("log-level").binding("log-level"));
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options.addOption(Poco::Util::Option("base-dir", "", "base directory for copiers, consecutive copier launches will populate /base-dir/launch_id/* directories")
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.argument("base-dir").binding("base-dir"));
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options.addOption(Poco::Util::Option("experimental-use-sample-offset", "", "Use SAMPLE OFFSET query instead of cityHash64(PRIMARY KEY) % n == k")
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.argument("experimental-use-sample-offset").binding("experimental-use-sample-offset"));
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options.addOption(Poco::Util::Option("status", "", "Get for status for current execution").binding("status"));
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options.addOption(Poco::Util::Option("max-table-tries", "", "Number of tries for the copy table task")
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.argument("max-table-tries").binding("max-table-tries"));
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options.addOption(Poco::Util::Option("max-shard-partition-tries", "", "Number of tries for the copy one partition task")
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.argument("max-shard-partition-tries").binding("max-shard-partition-tries"));
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options.addOption(Poco::Util::Option("max-shard-partition-piece-tries-for-alter", "", "Number of tries for final ALTER ATTACH to destination table")
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.argument("max-shard-partition-piece-tries-for-alter").binding("max-shard-partition-piece-tries-for-alter"));
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options.addOption(Poco::Util::Option("retry-delay-ms", "", "Delay between task retries")
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.argument("retry-delay-ms").binding("retry-delay-ms"));
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using Me = std::decay_t<decltype(*this)>;
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options.addOption(Poco::Util::Option("help", "", "produce this help message").binding("help")
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.callback(Poco::Util::OptionCallback<Me>(this, &Me::handleHelp)));
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}
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void ClusterCopierApp::mainImpl()
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{
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/// Status command
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{
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if (is_status_mode)
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{
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SharedContextHolder shared_context = Context::createShared();
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auto context = Context::createGlobal(shared_context.get());
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context->makeGlobalContext();
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SCOPE_EXIT_SAFE(context->shutdown());
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auto zookeeper = context->getZooKeeper();
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auto status_json = zookeeper->get(task_path + "/status");
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LOG_INFO(&logger(), "{}", status_json);
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std::cout << status_json << std::endl;
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context->resetZooKeeper();
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return;
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}
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}
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StatusFile status_file(process_path + "/status", StatusFile::write_full_info);
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ThreadStatus thread_status;
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auto * log = &logger();
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LOG_INFO(log, "Starting clickhouse-copier (id {}, host_id {}, path {}, revision {})", process_id, host_id, process_path, ClickHouseRevision::getVersionRevision());
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SharedContextHolder shared_context = Context::createShared();
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auto context = Context::createGlobal(shared_context.get());
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context->makeGlobalContext();
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SCOPE_EXIT_SAFE(context->shutdown());
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context->setConfig(loaded_config.configuration);
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context->setApplicationType(Context::ApplicationType::LOCAL);
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context->setPath(process_path + "/");
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registerFunctions();
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registerAggregateFunctions();
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registerTableFunctions();
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registerStorages();
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registerDictionaries();
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registerDisks();
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registerFormats();
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static const std::string default_database = "_local";
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DatabaseCatalog::instance().attachDatabase(default_database, std::make_shared<DatabaseMemory>(default_database, context));
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context->setCurrentDatabase(default_database);
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/// Disable queries logging, since:
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/// - There are bits that is not allowed for global context, like adding factories info (for the query_log)
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/// - And anyway it is useless for copier.
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context->setSetting("log_queries", false);
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auto local_context = Context::createCopy(context);
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/// Initialize query scope just in case.
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CurrentThread::QueryScope query_scope(local_context);
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auto copier = std::make_unique<ClusterCopier>(
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task_path, host_id, default_database, local_context, log);
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copier->setSafeMode(is_safe_mode);
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copier->setCopyFaultProbability(copy_fault_probability);
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copier->setMoveFaultProbability(move_fault_probability);
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copier->setMaxTableTries(max_table_tries);
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copier->setMaxShardPartitionTries(max_shard_partition_tries);
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copier->setMaxShardPartitionPieceTriesForAlter(max_shard_partition_piece_tries_for_alter);
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copier->setRetryDelayMs(retry_delay_ms);
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copier->setExperimentalUseSampleOffset(experimental_use_sample_offset);
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auto task_file = config().getString("task-file", "");
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if (!task_file.empty())
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copier->uploadTaskDescription(task_path, task_file, config().getBool("task-upload-force", false));
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copier->init();
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copier->process(ConnectionTimeouts::getTCPTimeoutsWithoutFailover(context->getSettingsRef()));
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/// Reset ZooKeeper before removing ClusterCopier.
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/// Otherwise zookeeper watch can call callback which use already removed ClusterCopier object.
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context->resetZooKeeper();
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}
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int ClusterCopierApp::main(const std::vector<std::string> &)
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{
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if (is_help)
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return 0;
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try
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{
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mainImpl();
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}
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catch (...)
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{
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tryLogCurrentException(&Poco::Logger::root(), __PRETTY_FUNCTION__);
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auto code = getCurrentExceptionCode();
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return (code) ? code : -1;
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}
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return 0;
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}
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}
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#pragma GCC diagnostic ignored "-Wunused-function"
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#pragma GCC diagnostic ignored "-Wmissing-declarations"
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int mainEntryClickHouseClusterCopier(int argc, char ** argv)
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{
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try
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{
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DB::ClusterCopierApp app;
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return app.run(argc, argv);
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}
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catch (...)
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{
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std::cerr << DB::getCurrentExceptionMessage(true) << "\n";
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auto code = DB::getCurrentExceptionCode();
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return (code) ? code : -1;
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}
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}
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