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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2016-11-19 00:07:58 +00:00
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#include <DB/Dictionaries/OwningBlockInputStream.h>
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2016-11-15 19:51:06 +00:00
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#include <DB/IO/ReadBufferFromHTTP.h>
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2016-11-19 00:07:58 +00:00
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#include <DB/IO/ReadWriteBufferFromHTTP.h>
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2016-11-15 19:51:06 +00:00
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2016-11-22 15:03:54 +00:00
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#include <DB/DataStreams/IBlockOutputStream.h>
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#include <DB/DataTypes/DataTypesNumberFixed.h>
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#include <DB/IO/WriteBufferFromOStream.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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2016-11-22 15:03:54 +00:00
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HTTPDictionarySource::HTTPDictionarySource(const DictionaryStructure & dict_struct_,
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const Poco::Util::AbstractConfiguration & config, const std::string & config_prefix,
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Block & sample_block, const Context & context) :
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dict_struct{dict_struct_},
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host{config.getString(config_prefix + ".host", "::1")},
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port{std::stoi(config.getString(config_prefix + ".port", "80"))},
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path{config.getString(config_prefix + ".path", "")},
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//method{config.getString(config_prefix + ".method", "")},
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format{config.getString(config_prefix + ".format")},
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sample_block{sample_block},
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context(context)
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{
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}
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HTTPDictionarySource::HTTPDictionarySource(const HTTPDictionarySource & other) :
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dict_struct{other.dict_struct},
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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},
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context(other.context)
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{
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}
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BlockInputStreamPtr HTTPDictionarySource::loadAll()
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{
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LOG_TRACE(log, "loadAll " + toString());
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2016-11-19 00:56:15 +00:00
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auto in_ptr = std::make_unique<ReadBufferFromHTTP>(host, port, path, ReadBufferFromHTTP::Params(), Poco::Net::HTTPRequest::HTTP_GET);
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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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LOG_TRACE(log, "loadIds " + toString());
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HTTPLocation http_location;
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http_location.host = host;
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http_location.port = port;
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http_location.path = path;
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http_location.method = Poco::Net::HTTPRequest::HTTP_POST;
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ReadWriteBufferFromHTTP::OutStreamCallback out_stream_callback = [&](std::ostream & out_stream) {
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// copypaste from ExecutableDictionarySource.cpp, todo: make func
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ColumnWithTypeAndName column;
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column.type = std::make_shared<DataTypeUInt64>();
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column.column = column.type->createColumn();
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for (auto & id : ids) {
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column.column->insert(id); //CHECKME maybe faster?
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}
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Block block;
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block.insert(std::move(column));
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WriteBufferFromOStream out_buffer(out_stream);
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auto stream_out = context.getOutputFormat(format, out_buffer, sample_block);
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stream_out->write(block);
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};
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auto in_ptr = std::make_unique<ReadWriteBufferFromHTTP>(http_location, out_stream_callback);
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auto stream = context.getInputFormat(format, *in_ptr, sample_block, max_block_size);
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return std::make_shared<OwningBlockInputStream<ReadWriteBufferFromHTTP>>(stream, std::move(in_ptr));
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2016-11-15 19:51:06 +00:00
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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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LOG_TRACE(log, "loadKeys " + toString());
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HTTPLocation http_location;
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http_location.host = host;
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http_location.port = port;
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http_location.path = path;
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http_location.method = Poco::Net::HTTPRequest::HTTP_POST;
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ReadWriteBufferFromHTTP::OutStreamCallback out_stream_callback = [&](std::ostream & out_stream) {
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// copypaste from ExecutableDictionarySource.cpp, todo: make func
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Block block;
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const auto keys_size = key_columns.size();
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for (const auto i : ext::range(0, keys_size))
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{
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const auto & key_description = (*dict_struct.key)[i];
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const auto & key = key_columns[i];
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ColumnWithTypeAndName column;
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column.type = key_description.type;
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column.column = key->clone(); // CHECKME !!
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block.insert(std::move(column));
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}
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WriteBufferFromOStream out_buffer(out_stream);
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auto stream_out = context.getOutputFormat(format, out_buffer, sample_block);
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stream_out->write(block);
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};
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auto in_ptr = std::make_unique<ReadWriteBufferFromHTTP>(http_location, out_stream_callback);
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auto stream = context.getInputFormat(format, *in_ptr, sample_block, max_block_size);
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return std::make_shared<OwningBlockInputStream<ReadWriteBufferFromHTTP>>(stream, std::move(in_ptr));
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2016-11-15 19:51:06 +00:00
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}
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bool HTTPDictionarySource::isModified() const
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{
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return true;
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}
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bool HTTPDictionarySource::supportsSelectiveLoad() const
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{
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2016-11-23 22:44:53 +00:00
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return true;
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2016-11-15 19:51:06 +00:00
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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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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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}
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