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40 lines
801 B
C++
40 lines
801 B
C++
#pragma once
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#include <string>
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#include <boost/core/noncopyable.hpp>
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#include <Poco/Util/AbstractConfiguration.h>
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#include <Common/Logger.h>
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namespace DB
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{
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namespace PlacementInfo
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{
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static constexpr auto PLACEMENT_CONFIG_PREFIX = "placement";
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static constexpr auto DEFAULT_AZ_FILE_PATH = "/run/instance-metadata/node-zone";
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/// A singleton providing information on where in cloud server is running.
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class PlacementInfo : private boost::noncopyable
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{
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public:
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static PlacementInfo & instance();
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void initialize(const Poco::Util::AbstractConfiguration & config);
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std::string getAvailabilityZone() const;
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private:
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PlacementInfo() = default;
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LoggerPtr log = getLogger("CloudPlacementInfo");
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bool initialized;
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bool use_imds;
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std::string availability_zone;
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};
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}
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}
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