mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-25 00:52:02 +00:00
111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
#pragma once
|
|
|
|
#include "Aliases.h"
|
|
#include <Poco/Util/AbstractConfiguration.h>
|
|
|
|
namespace DB
|
|
{
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int BAD_ARGUMENTS;
|
|
}
|
|
|
|
struct TaskCluster
|
|
{
|
|
TaskCluster(const String & task_zookeeper_path_, const String & default_local_database_)
|
|
: task_zookeeper_path(task_zookeeper_path_)
|
|
, default_local_database(default_local_database_)
|
|
{}
|
|
|
|
void loadTasks(const Poco::Util::AbstractConfiguration & config, const String & base_key = "");
|
|
|
|
/// Set (or update) settings and max_workers param
|
|
void reloadSettings(const Poco::Util::AbstractConfiguration & config, const String & base_key = "");
|
|
|
|
/// Base node for all tasks. Its structure:
|
|
/// workers/ - directory with active workers (amount of them is less or equal max_workers)
|
|
/// description - node with task configuration
|
|
/// table_table1/ - directories with per-partition copying status
|
|
String task_zookeeper_path;
|
|
|
|
/// Database used to create temporary Distributed tables
|
|
String default_local_database;
|
|
|
|
/// Limits number of simultaneous workers
|
|
UInt64 max_workers = 0;
|
|
|
|
/// Base settings for pull and push
|
|
Settings settings_common;
|
|
/// Settings used to fetch data
|
|
Settings settings_pull;
|
|
/// Settings used to insert data
|
|
Settings settings_push;
|
|
|
|
String clusters_prefix;
|
|
|
|
/// Subtasks
|
|
TasksTable table_tasks;
|
|
|
|
std::random_device random_device;
|
|
pcg64 random_engine;
|
|
};
|
|
|
|
inline void DB::TaskCluster::loadTasks(const Poco::Util::AbstractConfiguration & config, const String & base_key)
|
|
{
|
|
String prefix = base_key.empty() ? "" : base_key + ".";
|
|
|
|
clusters_prefix = prefix + "remote_servers";
|
|
if (!config.has(clusters_prefix))
|
|
throw Exception("You should specify list of clusters in " + clusters_prefix, ErrorCodes::BAD_ARGUMENTS);
|
|
|
|
Poco::Util::AbstractConfiguration::Keys tables_keys;
|
|
config.keys(prefix + "tables", tables_keys);
|
|
|
|
for (const auto & table_key : tables_keys)
|
|
{
|
|
table_tasks.emplace_back(*this, config, prefix + "tables", table_key);
|
|
}
|
|
}
|
|
|
|
inline void DB::TaskCluster::reloadSettings(const Poco::Util::AbstractConfiguration & config, const String & base_key)
|
|
{
|
|
String prefix = base_key.empty() ? "" : base_key + ".";
|
|
|
|
max_workers = config.getUInt64(prefix + "max_workers");
|
|
|
|
settings_common = Settings();
|
|
if (config.has(prefix + "settings"))
|
|
settings_common.loadSettingsFromConfig(prefix + "settings", config);
|
|
|
|
settings_common.prefer_localhost_replica = 0;
|
|
|
|
settings_pull = settings_common;
|
|
if (config.has(prefix + "settings_pull"))
|
|
settings_pull.loadSettingsFromConfig(prefix + "settings_pull", config);
|
|
|
|
settings_push = settings_common;
|
|
if (config.has(prefix + "settings_push"))
|
|
settings_push.loadSettingsFromConfig(prefix + "settings_push", config);
|
|
|
|
auto set_default_value = [] (auto && setting, auto && default_value)
|
|
{
|
|
setting = setting.changed ? setting.value : default_value;
|
|
};
|
|
|
|
/// Override important settings
|
|
settings_pull.readonly = 1;
|
|
settings_pull.prefer_localhost_replica = false;
|
|
settings_push.insert_distributed_sync = true;
|
|
settings_push.prefer_localhost_replica = false;
|
|
|
|
set_default_value(settings_pull.load_balancing, LoadBalancing::NEAREST_HOSTNAME);
|
|
set_default_value(settings_pull.max_threads, 1);
|
|
set_default_value(settings_pull.max_block_size, 8192UL);
|
|
set_default_value(settings_pull.preferred_block_size_bytes, 0);
|
|
|
|
set_default_value(settings_push.insert_distributed_timeout, 0);
|
|
set_default_value(settings_push.replication_alter_partitions_sync, 2);
|
|
}
|
|
|
|
}
|