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#pragma once
#include <Interpreters/Context.h>
#include <Poco/Util/AbstractConfiguration.h>
#include <Storages/StorageS3Settings.h>
#include <IO/HTTPHeaderEntries.h>
namespace DB
{
#define EMPTY_SETTINGS(M, ALIAS)
DECLARE_SETTINGS_TRAITS(EmptySettingsTraits, EMPTY_SETTINGS)
struct EmptySettings : public BaseSettings<EmptySettingsTraits> {};
struct ExternalDataSourceConfiguration
{
String host;
UInt16 port = 0;
String username = "default";
String password;
String quota_key;
String database;
String table;
String schema;
std::vector<std::pair<String, UInt16>> addresses; /// Failover replicas.
String addresses_expr;
String toString() const;
void set(const ExternalDataSourceConfiguration & conf);
};
using StorageSpecificArgs = std::vector<std::pair<String, ASTPtr>>;
struct ExternalDataSourceInfo
{
ExternalDataSourceConfiguration configuration;
SettingsChanges settings_changes;
};
using HasConfigKeyFunc = std::function<bool(const String &)>;
template <typename T = EmptySettingsTraits>
std::optional<ExternalDataSourceInfo> getExternalDataSourceConfiguration(
const Poco::Util::AbstractConfiguration & dict_config, const String & dict_config_prefix,
ContextPtr context, HasConfigKeyFunc has_config_key, const BaseSettings<T> & settings = {});
/// Highest priority is 0, the bigger the number in map, the less the priority.
using ExternalDataSourcesConfigurationByPriority = std::map<size_t, std::vector<ExternalDataSourceConfiguration>>;
struct ExternalDataSourcesByPriority
{
String database;
String table;
String schema;
ExternalDataSourcesConfigurationByPriority replicas_configurations;
};
ExternalDataSourcesByPriority
getExternalDataSourceConfigurationByPriority(const Poco::Util::AbstractConfiguration & dict_config, const String & dict_config_prefix, ContextPtr context, HasConfigKeyFunc has_config_key);
struct URLBasedDataSourceConfiguration
{
String url;
String endpoint;
String format = "auto";
String compression_method = "auto";
String structure = "auto";
String user;
String password;
HTTPHeaderEntries headers;
String http_method;
void set(const URLBasedDataSourceConfiguration & conf);
};
struct URLBasedDataSourceConfig
{
URLBasedDataSourceConfiguration configuration;
};
std::optional<URLBasedDataSourceConfig> getURLBasedDataSourceConfiguration(
const Poco::Util::AbstractConfiguration & dict_config, const String & dict_config_prefix, ContextPtr context);
}
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