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63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
#include <IO/HDFSCommon.h>
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#include <Poco/URI.h>
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#if USE_HDFS
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#include <Common/Exception.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int BAD_ARGUMENTS;
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extern const int NETWORK_ERROR;
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}
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HDFSBuilderPtr createHDFSBuilder(const std::string & uri_str)
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{
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const Poco::URI uri(uri_str);
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auto & host = uri.getHost();
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auto port = uri.getPort();
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const std::string path = "//";
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if (host.empty())
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throw Exception("Illegal HDFS URI: " + uri.toString(), ErrorCodes::BAD_ARGUMENTS);
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HDFSBuilderPtr builder(hdfsNewBuilder());
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if (builder == nullptr)
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throw Exception("Unable to create builder to connect to HDFS: " + uri.toString() + " " + std::string(hdfsGetLastError()),
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ErrorCodes::NETWORK_ERROR);
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hdfsBuilderConfSetStr(builder.get(), "input.read.timeout", "60000"); // 1 min
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hdfsBuilderConfSetStr(builder.get(), "input.write.timeout", "60000"); // 1 min
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hdfsBuilderConfSetStr(builder.get(), "input.connect.timeout", "60000"); // 1 min
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std::string user_info = uri.getUserInfo();
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if (!user_info.empty() && user_info.front() != ':')
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{
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std::string user;
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size_t delim_pos = user_info.find(':');
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if (delim_pos != std::string::npos)
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user = user_info.substr(0, delim_pos);
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else
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user = user_info;
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hdfsBuilderSetUserName(builder.get(), user.c_str());
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}
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hdfsBuilderSetNameNode(builder.get(), host.c_str());
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if (port != 0)
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{
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hdfsBuilderSetNameNodePort(builder.get(), port);
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}
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return builder;
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}
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HDFSFSPtr createHDFSFS(hdfsBuilder * builder)
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{
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HDFSFSPtr fs(hdfsBuilderConnect(builder));
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if (fs == nullptr)
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throw Exception("Unable to connect to HDFS: " + std::string(hdfsGetLastError()),
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ErrorCodes::NETWORK_ERROR);
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return fs;
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}
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}
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#endif
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