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https://github.com/ClickHouse/ClickHouse.git
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78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
#pragma once
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#include <IO/ConnectionTimeouts.h>
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#include <IO/ReadWriteBufferFromHTTP.h>
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#include <Poco/Net/HTTPBasicCredentials.h>
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#include <Poco/URI.h>
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#include <common/LocalDateTime.h>
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#include "DictionaryStructure.h"
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#include "IDictionarySource.h"
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#include <Interpreters/Context.h>
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#include <IO/CompressionMethod.h>
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namespace Poco
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{
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class Logger;
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}
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namespace DB
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{
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/// Allows loading dictionaries from http[s] source
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class HTTPDictionarySource final : public IDictionarySource
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{
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public:
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HTTPDictionarySource(
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const DictionaryStructure & dict_struct_,
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const Poco::Util::AbstractConfiguration & config,
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const std::string & config_prefix,
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Block & sample_block_,
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ContextPtr context_,
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bool check_config);
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HTTPDictionarySource(const HTTPDictionarySource & other);
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HTTPDictionarySource & operator=(const HTTPDictionarySource &) = delete;
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BlockInputStreamPtr loadAll() override;
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BlockInputStreamPtr loadUpdatedAll() override;
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BlockInputStreamPtr loadIds(const std::vector<UInt64> & ids) override;
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BlockInputStreamPtr loadKeys(const Columns & key_columns, const std::vector<size_t> & requested_rows) override;
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bool isModified() const override;
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bool supportsSelectiveLoad() const override;
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bool hasUpdateField() const override;
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DictionarySourcePtr clone() const override;
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std::string toString() const override;
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private:
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void getUpdateFieldAndDate(Poco::URI & uri);
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// wrap buffer using encoding from made request
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BlockInputStreamPtr createWrappedBuffer(std::unique_ptr<ReadWriteBufferFromHTTP> http_buffer);
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Poco::Logger * log;
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LocalDateTime getLastModification() const;
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std::chrono::time_point<std::chrono::system_clock> update_time;
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const DictionaryStructure dict_struct;
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const std::string url;
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Poco::Net::HTTPBasicCredentials credentials;
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ReadWriteBufferFromHTTP::HTTPHeaderEntries header_entries;
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std::string update_field;
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const std::string format;
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Block sample_block;
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ContextPtr context;
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ConnectionTimeouts timeouts;
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};
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}
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