ClickHouse/programs/client/Client.h
Azat Khuzhin 4564a1ef29 Add ability to override connection settings based on connection names
This is somehow analog of .netrc [1].

  [1]: https://www.gnu.org/software/inetutils/manual/html_node/The-_002enetrc-file.html

The follow options can be overwritten on a per-hostname/connection
basis:
- hostname
- port
- secure
- user
- password
- database
- history_file

Also note, that you can have multiple settings for one hostname, can be
useful to distinguish readonly from non-readonly for example.

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2023-01-28 17:01:12 +01:00

54 lines
1.4 KiB
C++

#pragma once
#include <Client/ClientBase.h>
namespace DB
{
class Client : public ClientBase
{
public:
Client() = default;
void initialize(Poco::Util::Application & self) override;
int main(const std::vector<String> & /*args*/) override;
protected:
bool processWithFuzzing(const String & full_query) override;
std::optional<bool> processFuzzingStep(const String & query_to_execute, const ASTPtr & parsed_query);
void connect() override;
void processError(const String & query) const override;
String getName() const override { return "client"; }
void printHelpMessage(const OptionsDescription & options_description) override;
void addOptions(OptionsDescription & options_description) override;
void processOptions(
const OptionsDescription & options_description,
const CommandLineOptions & options,
const std::vector<Arguments> & external_tables_arguments,
const std::vector<Arguments> & hosts_and_ports_arguments) override;
void processConfig() override;
void readArguments(
int argc,
char ** argv,
Arguments & common_arguments,
std::vector<Arguments> & external_tables_arguments,
std::vector<Arguments> & hosts_and_ports_arguments) override;
private:
void printChangedSettings() const;
void showWarnings();
void parseConnectionsCredentials();
std::vector<String> loadWarningMessages();
};
}