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64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
#pragma once
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#include <Processors/IProcessor.h>
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#include <IO/Operators.h>
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namespace DB
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{
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/** Print pipeline in "dot" format for GraphViz.
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* You can render it with:
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* dot -T png < pipeline.dot > pipeline.png
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*/
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template <typename Processors, typename Statuses>
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void printPipeline(const Processors & processors, const Statuses & statuses, WriteBuffer & out)
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{
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out << "digraph\n{\n";
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auto get_proc_id = [](const IProcessor & proc) -> UInt64
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{
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return reinterpret_cast<std::uintptr_t>(&proc);
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};
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auto statuses_iter = statuses.begin();
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/// Nodes // TODO quoting and escaping
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for (const auto & processor : processors)
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{
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out << "n" << get_proc_id(*processor) << "[label=\"" << processor->getName() << processor->getDescription();
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if (statuses_iter != statuses.end())
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{
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out << " (" << IProcessor::statusToName(*statuses_iter) << ")";
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++statuses_iter;
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}
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out << "\"];\n";
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}
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/// Edges
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for (const auto & processor : processors)
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{
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for (const auto & port : processor->getOutputs())
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{
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if (!port.isConnected())
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continue;
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const IProcessor & curr = *processor;
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const IProcessor & next = port.getInputPort().getProcessor();
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out << "n" << get_proc_id(curr) << " -> " << "n" << get_proc_id(next) << ";\n";
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}
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}
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out << "}\n";
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}
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template <typename Processors>
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void printPipeline(const Processors & processors, WriteBuffer & out)
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{
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printPipeline(processors, std::vector<IProcessor::Status>(), out);
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}
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}
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