static size_t read_test(const stdString &index_name, const stdString &channel_name,
double delta,
const epicsTime *start = 0, const epicsTime *end = 0)
{
stdString text;
size_t num = 0;
try
{
IndexFile index;
index.open(index_name);
PlotReader reader(index, delta);
const RawValue::Data *value = reader.find(channel_name, start);
while (value &&
(end==0 || RawValue::getTime(value) < *end))
{
++num;
LOG_ASSERT(value == reader.get());
reader.toString(text);
printf(" %s\n", text.c_str());
value = reader.next();
}
}
catch (GenericException &e)
{
printf("Exception:\n%s\n", e.what());
return 0;
}
return num;
}
LogFile::LogFile(const std::string& fileName, bool verbose) : filename(fileName)
{
logFile.open(fileName.c_str(), std::ifstream::binary | std::ifstream::in);
readBuffer.resize(8096 * 1024);
// logFile.rdbuf()->pubsetbuf(readBuffer.data(), readBuffer.size());
if (! logFile.good())
throw std::runtime_error("Error, empty File");
// Load the prologue
Prologue prologue;
logFile.read(reinterpret_cast<char*>(&prologue), sizeof(prologue));
if (! logFile.good() || std::string(prologue.magic, 7) != std::string(FORMAT_MAGIC))
throw std::runtime_error("Error, Bad Magic Block, not a Pocolog file ?");;
firstBlockHeaderPos = logFile.tellg();
nextBlockHeaderPos = firstBlockHeaderPos;
gotBlockHeader = false;
// std::cout << "Found " << descriptions.size() << " stream in logfile " << getFileName() << std::endl;
//load Index
IndexFile *indexFile = new IndexFile(*this, verbose);
indexFiles.push_back(indexFile);
//we need to start from the start, as Stream declarations may be any where
//inside the logfile
nextBlockHeaderPos = firstBlockHeaderPos;
gotBlockHeader = false;
descriptions = indexFile->getStreamDescriptions();
for(std::vector<StreamDescription>::const_iterator it = descriptions.begin(); it != descriptions.end();it++)
{
switch(it->getType())
{
case DataStreamType:
// std::cout << "Creating InputDataStream " << it->getName() << std::endl;
try
{
streams.push_back(new InputDataStream(*it, indexFile->getIndexForStream(*it)));
}
catch(...)
{
std::cerr << "WARNING, skipping corrupted stream " << it->getName() << " of type " << it->getTypeName() << std::endl;
}
break;
default:
std::cout << "Ignoring stream " << it->getName() << std::endl;
break;
}
}
}
// Try to determine the period and a good guess
// for the number of samples for a channel.
void determine_period_and_samples(IndexFile &index,
const stdString &channel,
double &period, size_t &num_samples)
{
period = 1.0; // initial guess
num_samples = 10;
// Whatever fails only means that there is no data,
// so the initial guess remains OK.
// Otherwise we peek into the last datablock.
stdString directory;
AutoPtr<RTree> tree(index.getTree(channel, directory));
if (!tree)
return;
RTree::Node node(tree->getM(), false);
RTree::Datablock block;
int i;
if (!tree->getLastDatablock(node, i, block))
return;
AutoPtr<DataHeader> header;
if (!(header = get_dataheader(directory,
block.data_filename, block.data_offset)))
return;
period = header->data.period;
num_samples = header->data.num_samples;
if (verbose > 2)
printf("Last source buffer: Period %g, %lu samples.\n",
period, (unsigned long) num_samples);
}
IndexFile* IndexFileFactory::openWith(const char* format_name,
const char* filename, AVFormatContext* input, const char* stream_filename)
{
const RegEntry* entry = getEntry(format_name);
if(!entry)
{
fprintf(stderr, "Index file format '%s' is not supported\n",
format_name);
return NULL;
}
IndexFile* f = entry->creator(input);
if(!f->open(filename, stream_filename))
{
delete f;
return NULL;
}
return f;
}
IndexFile* IndexFileFactory::detectIndexFile(
AVFormatContext* input, const char* filename)
{
if(!g_entryList)
return NULL;
for(int i = 0; i < g_entryList->size(); ++i)
{
const RegEntry& entry = g_entryList->at(i);
if(!entry.detector(input, filename))
continue;
IndexFile* f = entry.creator(input);
if(f->open(NULL, filename))
return f;
delete f;
}
return NULL;
}
unsigned long dump_datablocks_for_channel(IndexFile &index,
const stdString &channel_name,
unsigned long &direct_count,
unsigned long &chained_count)
{
DataFile *datafile;
AutoPtr<DataHeader> header;
direct_count = chained_count = 0;
stdString directory;
AutoPtr<RTree> tree(index.getTree(channel_name, directory));
if (! tree)
return 0;
RTree::Datablock block;
RTree::Node node(tree->getM(), true);
stdString start, end;
int idx;
bool ok;
if (verbose > 1)
printf("RTree M for channel '%s': %d\n", channel_name.c_str(),
tree->getM());
if (verbose > 2)
printf("Datablocks for channel '%s':\n", channel_name.c_str());
for (ok = tree->getFirstDatablock(node, idx, block);
ok;
ok = tree->getNextDatablock(node, idx, block))
{
++direct_count;
if (verbose > 2)
printf("'%s' @ 0x%lX: Indexed range %s - %s\n",
block.data_filename.c_str(),
(unsigned long)block.data_offset,
epicsTimeTxt(node.record[idx].start, start),
epicsTimeTxt(node.record[idx].end, end));
if (verbose > 3)
{
datafile = DataFile::reference(directory,
block.data_filename,
false);
header = datafile->getHeader(block.data_offset);
datafile->release();
if (header)
{
header->show(stdout, true);
header = 0;
}
else
printf("Cannot read header in data file.\n");
}
bool first_hidden_block = true;
while (tree->getNextChainedBlock(block))
{
if (first_hidden_block && verbose > 2)
{
first_hidden_block = false;
printf("Hidden blocks with smaller time range:\n");
}
++chained_count;
if (verbose > 2)
{
printf("--- '%s' @ 0x%lX\n",
block.data_filename.c_str(),
(unsigned long)block.data_offset);
if (verbose > 3)
{
datafile = DataFile::reference(directory,
block.data_filename,
false);
header = datafile->getHeader(block.data_offset);
if (header)
{
header->show(stdout, false);
header = 0;
}
else
printf("Cannot read header in data file.\n");
datafile->release();
}
}
}
printf("\n");
}
return direct_count + chained_count;
}
std::pair<LightTable *, LightTable *> LightTable::join_self(
LightTable & table,
std::string key,
relation_type_t rel_type,
attr_t & kAttr,
std::vector<AddrPair>& match_pairs)
{
uint8_t stat = 0x0;
IndexFile *index = table.get_index_file(key.c_str());
if (index != NULL)
{
IndexType type = index->type();
stat = (type == HASH || type == PHASH) ? BIT_HAS_HASH :
(type == TREE || type == PTREE) ? BIT_HAS_TREE : 0;
}
int attr_id = table.get_attr_id(key);
switch (rel_type)
{
case EQ:
if ((stat & BIT_HAS_HASH) || (stat & BIT_HAS_TREE))
{
index->get(kAttr, match_pairs);
}
else
{
auto begin = table.begin();
for (auto it = table.begin(); it != table.end(); it++)
{
if (it->at(attr_id) == kAttr)
{
uint32_t addr = it - begin;
match_pairs.emplace_back(addr, addr);
}
}
}
break;
case NEQ:
if ((stat & BIT_HAS_HASH) || (stat & BIT_HAS_TREE))
{
index->get_not(kAttr, match_pairs);
}
else
{
auto begin = table.begin();
for (auto it = table.begin(); it != table.end(); it++)
{
if (it->at(attr_id) != kAttr)
{
uint32_t addr = it - begin;
match_pairs.emplace_back(addr, addr);
}
}
}
break;
case LESS:
if ((stat & BIT_HAS_TREE))
{
((TreeIndexFile*)index)->get_less(kAttr, match_pairs);
}
else
{
auto begin = table.begin();
for (auto it = table.begin(); it != table.end(); it++)
{
if (it->at(attr_id) < kAttr)
{
uint32_t addr = it - begin;
match_pairs.emplace_back(addr, addr);
}
}
}
break;
case LARGE:
if ((stat & BIT_HAS_TREE))
{
((TreeIndexFile*)index)->get_large(kAttr, match_pairs);
}
else
{
auto begin = table.begin();
for (auto it = table.begin(); it != table.end(); it++)
{
if (it->at(attr_id) > kAttr)
{
uint32_t addr = it - begin;
match_pairs.emplace_back(addr, addr);
}
}
}
break;
default:
throw exception_t(UNKNOWN_RELATION, "Unknown relation type.");
}
return std::pair<LightTable *, LightTable *>(&table, &table);
}
