1#pragma once
2
3#include <IO/ConnectionTimeouts.h>
4#include <IO/ReadWriteBufferFromHTTP.h>
5#include <Poco/Net/HTTPBasicCredentials.h>
6#include <Poco/URI.h>
7#include <common/LocalDateTime.h>
8#include "DictionaryStructure.h"
9#include "IDictionarySource.h"
10
11namespace Poco
12{
13class Logger;
14}
15
16
17namespace DB
18{
19/// Allows loading dictionaries from http[s] source
20class HTTPDictionarySource final : public IDictionarySource
21{
22public:
23 HTTPDictionarySource(
24 const DictionaryStructure & dict_struct_,
25 const Poco::Util::AbstractConfiguration & config,
26 const std::string & config_prefix,
27 Block & sample_block_,
28 const Context & context_,
29 bool check_config);
30
31 HTTPDictionarySource(const HTTPDictionarySource & other);
32 HTTPDictionarySource & operator=(const HTTPDictionarySource &) = delete;
33
34 BlockInputStreamPtr loadAll() override;
35
36 BlockInputStreamPtr loadUpdatedAll() override;
37
38 BlockInputStreamPtr loadIds(const std::vector<UInt64> & ids) override;
39
40 BlockInputStreamPtr loadKeys(const Columns & key_columns, const std::vector<size_t> & requested_rows) override;
41
42 bool isModified() const override;
43
44 bool supportsSelectiveLoad() const override;
45
46 bool hasUpdateField() const override;
47
48 DictionarySourcePtr clone() const override;
49
50 std::string toString() const override;
51
52private:
53 void getUpdateFieldAndDate(Poco::URI & uri);
54
55 Poco::Logger * log;
56
57 LocalDateTime getLastModification() const;
58
59 std::chrono::time_point<std::chrono::system_clock> update_time;
60 const DictionaryStructure dict_struct;
61 const std::string url;
62 Poco::Net::HTTPBasicCredentials credentials;
63 ReadWriteBufferFromHTTP::HTTPHeaderEntries header_entries;
64 std::string update_field;
65 const std::string format;
66 Block sample_block;
67 const Context & context;
68 ConnectionTimeouts timeouts;
69};
70
71}
72