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#pragma once
#include <string>
#include <string_view>
#include <vector>
namespace DB
{
/** Tries to parse ClickHouse connection string.
* if @connection_string starts with 'clickhouse:' then connection string will be parsed
* and converted into a set of arguments for the client.
* Connection string format is similar to URI "clickhouse:[//[user[:password]@][hosts_and_ports]][/dbname][?query_parameters]"
* with the difference that hosts_and_ports can contain multiple hosts separated by ','.
* example: clickhouse://user@host1:port1,host2:port2
* @return Returns false if no connection string was specified. If a connection string was specified, returns true if it is valid, and throws an exception if it is invalid.
* @exception Throws DB::Exception if URI has valid scheme (clickhouse:), but invalid internals.
*/
bool tryParseConnectionString(
std::string_view connection_string,
std::vector<std::string> & common_arguments,
std::vector<std::vector<std::string>> & hosts_and_ports_arguments);
// Throws DB::Exception with BAD_ARGUMENTS if the given command line argument
// is not allowed to be used with a connection string.
void checkIfCmdLineOptionCanBeUsedWithConnectionString(std::string_view command_line_option);
}
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