mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-24 00:22:29 +00:00
123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
#include <mysqlxx/PoolFactory.h>
|
|
#include <Poco/Util/Application.h>
|
|
#include <Poco/Util/LayeredConfiguration.h>
|
|
|
|
namespace mysqlxx
|
|
{
|
|
|
|
struct PoolFactory::Impl
|
|
{
|
|
// Cache of already affected pools identified by their config name
|
|
std::map<std::string, std::shared_ptr<PoolWithFailover>> pools;
|
|
|
|
// Cache of Pool ID (host + port + user +...) cibling already established shareable pool
|
|
std::map<std::string, std::string> pools_by_ids;
|
|
|
|
/// Protect pools and pools_by_ids caches
|
|
std::mutex mutex;
|
|
};
|
|
|
|
PoolWithFailover PoolFactory::get(const std::string & config_name, unsigned default_connections,
|
|
unsigned max_connections, size_t max_tries)
|
|
{
|
|
return get(Poco::Util::Application::instance().config(), config_name, default_connections, max_connections, max_tries);
|
|
}
|
|
|
|
/// Duplicate of code from StringUtils.h. Copied here for less dependencies.
|
|
static bool startsWith(const std::string & s, const char * prefix)
|
|
{
|
|
return s.size() >= strlen(prefix) && 0 == memcmp(s.data(), prefix, strlen(prefix));
|
|
}
|
|
|
|
static std::string getPoolEntryName(const Poco::Util::AbstractConfiguration & config,
|
|
const std::string & config_name)
|
|
{
|
|
bool shared = config.getBool(config_name + ".share_connection", false);
|
|
|
|
// Not shared no need to generate a name the pool won't be stored
|
|
if (!shared)
|
|
return "";
|
|
|
|
std::string entry_name;
|
|
std::string host = config.getString(config_name + ".host", "");
|
|
std::string port = config.getString(config_name + ".port", "");
|
|
std::string user = config.getString(config_name + ".user", "");
|
|
std::string db = config.getString(config_name + ".db", "");
|
|
std::string table = config.getString(config_name + ".table", "");
|
|
|
|
Poco::Util::AbstractConfiguration::Keys keys;
|
|
config.keys(config_name, keys);
|
|
|
|
if (config.has(config_name + ".replica"))
|
|
{
|
|
Poco::Util::AbstractConfiguration::Keys replica_keys;
|
|
config.keys(config_name, replica_keys);
|
|
for (const auto & replica_config_key : replica_keys)
|
|
{
|
|
/// There could be another elements in the same level in configuration file, like "user", "port"...
|
|
if (startsWith(replica_config_key, "replica"))
|
|
{
|
|
std::string replica_name = config_name + "." + replica_config_key;
|
|
std::string tmp_host = config.getString(replica_name + ".host", host);
|
|
std::string tmp_port = config.getString(replica_name + ".port", port);
|
|
std::string tmp_user = config.getString(replica_name + ".user", user);
|
|
entry_name += (entry_name.empty() ? "" : "|") + tmp_user + "@" + tmp_host + ":" + tmp_port + "/" + db;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
entry_name = user + "@" + host + ":" + port + "/" + db;
|
|
}
|
|
return entry_name;
|
|
}
|
|
|
|
PoolWithFailover PoolFactory::get(const Poco::Util::AbstractConfiguration & config,
|
|
const std::string & config_name, unsigned default_connections, unsigned max_connections, size_t max_tries)
|
|
{
|
|
|
|
std::lock_guard<std::mutex> lock(impl->mutex);
|
|
if (auto entry = impl->pools.find(config_name); entry != impl->pools.end())
|
|
{
|
|
return *(entry->second);
|
|
}
|
|
else
|
|
{
|
|
std::string entry_name = getPoolEntryName(config, config_name);
|
|
if (auto id = impl->pools_by_ids.find(entry_name); id != impl->pools_by_ids.end())
|
|
{
|
|
entry = impl->pools.find(id->second);
|
|
std::shared_ptr<PoolWithFailover> pool = entry->second;
|
|
impl->pools.insert_or_assign(config_name, pool);
|
|
return *pool;
|
|
}
|
|
|
|
auto pool = std::make_shared<PoolWithFailover>(config, config_name, default_connections, max_connections, max_tries);
|
|
// Check the pool will be shared
|
|
if (!entry_name.empty())
|
|
{
|
|
// Store shared pool
|
|
impl->pools.insert_or_assign(config_name, pool);
|
|
impl->pools_by_ids.insert_or_assign(entry_name, config_name);
|
|
}
|
|
return *pool;
|
|
}
|
|
}
|
|
|
|
void PoolFactory::reset()
|
|
{
|
|
std::lock_guard<std::mutex> lock(impl->mutex);
|
|
impl->pools.clear();
|
|
impl->pools_by_ids.clear();
|
|
}
|
|
|
|
PoolFactory::PoolFactory() : impl(std::make_unique<PoolFactory::Impl>()) {}
|
|
|
|
PoolFactory & PoolFactory::instance()
|
|
{
|
|
static PoolFactory ret;
|
|
return ret;
|
|
}
|
|
|
|
}
|