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| 1 | +/************************************************************************** |
| 2 | + * basf2 (Belle II Analysis Software Framework) * |
| 3 | + * Author: The Belle II Collaboration * |
| 4 | + * * |
| 5 | + * See git log for contributors and copyright holders. * |
| 6 | + * This file is licensed under LGPL-3.0, see LICENSE.md. * |
| 7 | + **************************************************************************/ |
| 8 | + |
| 9 | +/* Belle 2 headers. */ |
| 10 | +#include <framework/logging/Logger.h> |
| 11 | +#include <framework/pcore/EvtMessage.h> |
| 12 | +#include <framework/pcore/MsgHandler.h> |
| 13 | + |
| 14 | +/* ROOT headers. */ |
| 15 | +#include <TClass.h> |
| 16 | +#include <TCollection.h> |
| 17 | +#include <TDirectory.h> |
| 18 | +#include <TFile.h> |
| 19 | +#include <TH1.h> |
| 20 | +#include <TList.h> |
| 21 | +#include <TObject.h> |
| 22 | +#include <TKey.h> |
| 23 | +#include <TSystem.h> |
| 24 | + |
| 25 | +/* C++ headers. */ |
| 26 | +#include <iostream> |
| 27 | +#include <memory> |
| 28 | +#include <string> |
| 29 | +#include <vector> |
| 30 | + |
| 31 | +/* LZ4 headers. */ |
| 32 | +#include <lz4.h> |
| 33 | + |
| 34 | +/* ZeroMQ headers. */ |
| 35 | +#include <zmq.hpp> |
| 36 | + |
| 37 | +namespace { |
| 38 | + |
| 39 | + /** Stream the histograms. */ |
| 40 | + unsigned int streamHistograms(TDirectory* directory, Belle2::MsgHandler& msgHandler, const std::string& directoryName = "") |
| 41 | + { |
| 42 | + TList* keylist{directory->GetListOfKeys()}; |
| 43 | + TIter nextkey{keylist}; |
| 44 | + TKey* key{nullptr}; |
| 45 | + unsigned int counter{0}; |
| 46 | + while ((key = dynamic_cast<TKey*>(nextkey()))) { |
| 47 | + TObject* object{directory->Get(key->GetName())}; |
| 48 | + TClass* objectClass{object->IsA()}; |
| 49 | + std::string objectName{directoryName}; |
| 50 | + if (not objectName.empty()) { |
| 51 | + objectName += "/"; |
| 52 | + } |
| 53 | + objectName += object->GetName(); |
| 54 | + if (objectClass->InheritsFrom(TH1::Class())) { |
| 55 | + TH1* histogram{dynamic_cast<TH1*>(object)}; |
| 56 | + msgHandler.add(histogram, objectName); |
| 57 | + counter++; |
| 58 | + } else if (objectClass->InheritsFrom(TDirectory::Class())) { |
| 59 | + TDirectory* subDirectory{dynamic_cast<TDirectory*>(object)}; |
| 60 | + // Apparently the dqm server does not understand multi-layer directory structures, |
| 61 | + // therefore the original author broke this down to only show the last directory |
| 62 | + counter += streamHistograms(subDirectory, msgHandler, object->GetName()); |
| 63 | + } |
| 64 | + } |
| 65 | + return counter; |
| 66 | + } |
| 67 | +} |
| 68 | + |
| 69 | +int main(int argc, char* argv[]) |
| 70 | +{ |
| 71 | + if (argc == 1 or std::string(argv[1]) == "--help" or std::string(argv[1]) == "-h") { |
| 72 | + std::cout << "Usage: " << argv[0] << " INPUT_FILE\n\n" |
| 73 | + " This tool checks if the online systems can handle the size of the DQM histograms\n" |
| 74 | + " by compressing and decompressing them with LZ4 as done within our ZeroMQ framework.\n"; |
| 75 | + return 1; |
| 76 | + } |
| 77 | + std::string inputFileName{argv[1]}; |
| 78 | + if (inputFileName.find(".root") == std::string::npos) { |
| 79 | + B2ERROR("The input file is not a .root file!"); |
| 80 | + return 1; |
| 81 | + } |
| 82 | + if (gSystem->AccessPathName(inputFileName.c_str())) { |
| 83 | + B2ERROR("The input file does not exist!"); |
| 84 | + return 1; |
| 85 | + } |
| 86 | + std::unique_ptr<TFile> inputFile{ |
| 87 | + std::unique_ptr<TFile>(TFile::Open(inputFileName.c_str(), "READ")) |
| 88 | + }; |
| 89 | + if (!inputFile or !inputFile->IsOpen() or inputFile->IsZombie()) { |
| 90 | + B2ERROR("The input file is not working!"); |
| 91 | + return 1; |
| 92 | + } |
| 93 | + Belle2::MsgHandler msgHandler; |
| 94 | + unsigned int streamedHistograms{streamHistograms(gDirectory, msgHandler)}; |
| 95 | + std::unique_ptr<Belle2::EvtMessage> evtMessage{ |
| 96 | + std::unique_ptr<Belle2::EvtMessage>(msgHandler.encode_msg(Belle2::ERecordType::MSG_EVENT)) |
| 97 | + }; |
| 98 | + size_t maximalCompressedSize{100000000}; |
| 99 | + std::vector<char> compressedBuffer; |
| 100 | + compressedBuffer.resize(maximalCompressedSize, 0); |
| 101 | + int compressedSize{ |
| 102 | + LZ4_compress_default(evtMessage->buffer(), &compressedBuffer[0], |
| 103 | + evtMessage->size(), maximalCompressedSize) |
| 104 | + }; |
| 105 | + if (compressedSize <= 0) { |
| 106 | + B2ERROR("LZ4_compress_default failed" |
| 107 | + << LogVar("file name", inputFileName) |
| 108 | + << LogVar("streamed histograms", streamedHistograms) |
| 109 | + << LogVar("original size", evtMessage->size()) |
| 110 | + << LogVar("compressed size", compressedSize)); |
| 111 | + inputFile->Close(); |
| 112 | + return 1; |
| 113 | + } |
| 114 | + zmq::message_t message{&compressedBuffer[0], static_cast<size_t>(compressedSize)}; |
| 115 | + size_t maximalUncompressedSize{128000000}; |
| 116 | + std::vector<char> uncompressedBuffer; |
| 117 | + uncompressedBuffer.reserve(maximalUncompressedSize); |
| 118 | + int uncompressedSize{ |
| 119 | + LZ4_decompress_safe(message.data<char>(), &uncompressedBuffer[0], |
| 120 | + message.size(), maximalUncompressedSize) |
| 121 | + }; |
| 122 | + if (uncompressedSize <= 0) { |
| 123 | + B2ERROR("LZ4_decompress_safe failed" |
| 124 | + << LogVar("file name", inputFileName) |
| 125 | + << LogVar("streamed histograms", streamedHistograms) |
| 126 | + << LogVar("original size", evtMessage->size()) |
| 127 | + << LogVar("compressed size", compressedSize) |
| 128 | + << LogVar("uncompressed size", uncompressedSize)); |
| 129 | + inputFile->Close(); |
| 130 | + return 1; |
| 131 | + } |
| 132 | + if (evtMessage->size() != uncompressedSize) { |
| 133 | + B2ERROR("Original size and decompressed size differ" |
| 134 | + << LogVar("file name", inputFileName) |
| 135 | + << LogVar("streamed histograms", streamedHistograms) |
| 136 | + << LogVar("original size", evtMessage->size()) |
| 137 | + << LogVar("compressed size", compressedSize) |
| 138 | + << LogVar("uncompressed size", uncompressedSize)); |
| 139 | + inputFile->Close(); |
| 140 | + return 1; |
| 141 | + } |
| 142 | + B2INFO("The compression/decompression cycle with LZ4 is successfully completed" |
| 143 | + << LogVar("file name", inputFileName) |
| 144 | + << LogVar("streamed histograms", streamedHistograms) |
| 145 | + << LogVar("original size", evtMessage->size()) |
| 146 | + << LogVar("compressed size", compressedSize) |
| 147 | + << LogVar("uncompressed size", uncompressedSize) |
| 148 | + << LogVar("compressed/uncompressed ratio", (compressedSize * 1.) / uncompressedSize)); |
| 149 | + inputFile->Close(); |
| 150 | + return 0; |
| 151 | +} |
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