2016-11-15 19:51:06 +00:00
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#include <DB/Dictionaries/HTTPDictionarySource.h>
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#include <DB/Interpreters/Context.h>
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#include <DB/Dictionaries/OwningBufferBlockInputStream.h>
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#include <DB/IO/ReadBufferFromHTTP.h>
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#include <DB/IO/RemoteReadBuffer.h>
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2016-11-15 23:55:45 +00:00
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#include <Poco/Net/HTTPRequest.h>
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2016-11-15 19:51:06 +00:00
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namespace DB
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{
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decltype(HTTPDictionarySource::max_block_size) HTTPDictionarySource::max_block_size;
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2016-11-15 22:05:49 +00:00
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HTTPDictionarySource::HTTPDictionarySource(const Poco::Util::AbstractConfiguration & config, const std::string & config_prefix, Block & sample_block, const Context & context) :
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host{config.getString(config_prefix + ".host")},
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port{std::stoi(config.getString(config_prefix + ".port"))},
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path{config.getString(config_prefix + ".path")},
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2016-11-15 23:55:45 +00:00
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format{config.getString(config_prefix + ".format")},
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2016-11-15 22:05:49 +00:00
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sample_block{sample_block},
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context(context)
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2016-11-15 19:51:06 +00:00
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{
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2016-11-15 22:05:49 +00:00
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last_modification = std::time(nullptr);
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2016-11-15 19:51:06 +00:00
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}
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2016-11-15 22:05:49 +00:00
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HTTPDictionarySource::HTTPDictionarySource(const HTTPDictionarySource & other) :
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host{other.host},
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port{other.port},
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path{other.path},
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format{other.format},
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sample_block{other.sample_block}, context(other.context),
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last_modification{other.last_modification}
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2016-11-15 19:51:06 +00:00
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{
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}
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BlockInputStreamPtr HTTPDictionarySource::loadAll()
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{
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2016-11-15 23:55:45 +00:00
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auto in_ptr = std::make_unique<ReadBufferFromHTTP>(host, port, path, params, Poco::Net::HTTPRequest::HTTP_GET);
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2016-11-15 19:51:06 +00:00
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auto stream = context.getInputFormat( format, *in_ptr, sample_block, max_block_size);
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return std::make_shared<OwningBufferBlockInputStream>(stream, std::move(in_ptr));
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}
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BlockInputStreamPtr HTTPDictionarySource::loadIds(const std::vector<UInt64> & ids)
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{
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throw Exception{"Method unsupported", ErrorCodes::NOT_IMPLEMENTED};
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}
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BlockInputStreamPtr HTTPDictionarySource::loadKeys(
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const ConstColumnPlainPtrs & key_columns, const std::vector<std::size_t> & requested_rows)
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{
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throw Exception{"Method unsupported", ErrorCodes::NOT_IMPLEMENTED};
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}
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bool HTTPDictionarySource::isModified() const
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{
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return getLastModification() > last_modification;
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}
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bool HTTPDictionarySource::supportsSelectiveLoad() const
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{
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return false;
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}
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DictionarySourcePtr HTTPDictionarySource::clone() const
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{
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return std::make_unique<HTTPDictionarySource>(*this);
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}
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std::string HTTPDictionarySource::toString() const
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{
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2016-11-15 23:55:45 +00:00
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return "http://" + host + ":" + std::to_string(port) + "/" + path;
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2016-11-15 19:51:06 +00:00
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}
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LocalDateTime HTTPDictionarySource::getLastModification() const
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{
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return last_modification;
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}
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}
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