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/*
* (C) Copyright 1996- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
* In applying this licence, ECMWF does not waive the privileges and immunities
* granted to it by virtue of its status as an intergovernmental organisation
* nor does it submit to any jurisdiction.
*/
#include "eckit/io/BufferList.h"
#include "eckit/io/FileHandle.h"
#include "eckit/message/Reader.h"
#include "eckit/testing/Test.h"
#include <cstring>
using namespace eckit::testing;
namespace metkit {
namespace grib {
namespace test {
//----------------------------------------------------------------------------------------------------------------------
class NonSeekFileHandle : public eckit::FileHandle {
using eckit::FileHandle::FileHandle;
bool canSeek() const override { return false; }
eckit::Offset seek(const eckit::Offset&) override { NOTIMP; }
};
//----------------------------------------------------------------------------------------------------------------------
CASE("read multiple matched odb frames") {
// This ODB is formed of two frames with matched metadata. We should read both frames into
// one message.
eckit::Buffer msgdata;
{
NonSeekFileHandle fh("multiodb.odb");
fh.openForRead();
eckit::AutoClose closer(fh);
eckit::message::Reader reader(fh);
eckit::message::Message msg;
msg = reader.next();
ASSERT(msg);
msgdata = eckit::Buffer{msg.data(), msg.length()};
// There is only one Message in the file
msg = reader.next();
EXPECT(!msg);
}
// And read the data in in one blob
eckit::Buffer comparedata;
{
NonSeekFileHandle fh("multiodb.odb");
fh.openForRead();
eckit::AutoClose closer(fh);
size_t expected_size = fh.size();
comparedata.resize(expected_size);
EXPECT(expected_size > 0);
EXPECT(fh.read(comparedata.data(), expected_size) == expected_size);
}
EXPECT(comparedata.size() == msgdata.size());
EXPECT(::memcmp(comparedata.data(), msgdata.data(), comparedata.size()) == 0);
eckit::Log::info() << "odb size: " << msgdata.size() << std::endl;
}
CASE("read multiple matched odb frames") {
// This ODB file is formed of four frames. Two pairs of matched metadata. This should be deconstructed into
// two messages.
eckit::BufferList msgdata;
{
eckit::FileHandle fh("multiodb2.odb");
fh.openForRead();
eckit::AutoClose closer(fh);
eckit::message::Reader reader(fh);
eckit::message::Message msg;
for (int i = 0; i < 2; ++i) {
msg = reader.next();
ASSERT(msg);
msgdata.append(eckit::Buffer{msg.data(), msg.length()});
}
// There is only one Message in the file
msg = reader.next();
EXPECT(!msg);
}
// And read the data in in one blob
eckit::Buffer comparedata;
{
eckit::FileHandle fh("multiodb2.odb");
fh.openForRead();
eckit::AutoClose closer(fh);
size_t expected_size = fh.size();
comparedata.resize(expected_size);
EXPECT(expected_size > 0);
EXPECT(fh.read(comparedata.data(), expected_size) == expected_size);
}
eckit::Buffer combineddata = msgdata.consolidate();
EXPECT(comparedata.size() == combineddata.size());
EXPECT(::memcmp(comparedata.data(), combineddata.data(), combineddata.size()) == 0);
eckit::Log::info() << "odb size: " << combineddata.size() << std::endl;
}
//----------------------------------------------------------------------------------------------------------------------
} // namespace test
} // namespace grib
} // namespace metkit
int main(int argc, char** argv) {
return run_tests(argc, argv);
}
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