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Code review. Fix data loss.

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This commit is contained in:
Sergey Magidovich 2016-03-11 17:34:10 +03:00 • committed by Sergey Yershov
parent f9e8c97c6f
commit 9cec925752
10 changed files with 207 additions and 198 deletions
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21
coding/internal/file_data.cpp
View file

@ -6,12 +6,14 @@
#include "base/exception.hpp"
#include "base/logging.hpp"
#include "base/string_utils.hpp"
#include "std/cerrno.hpp"
#include "std/cstring.hpp"
#include "std/exception.hpp"
#include "std/fstream.hpp"
#include "std/target_os.hpp"
#include "std/thread.hpp"
#ifdef OMIM_OS_WINDOWS
#include <io.h>
@ -267,6 +269,25 @@ bool RenameFileX(string const & fOld, string const & fNew)
return CheckFileOperationResult(res, fOld);
}
bool WriteToTempAndRenameToFile(string const & dest, function<bool(string const &)> const & write,
string const & tmp)
{
string const tmpFileName =
tmp.empty() ? dest + ".tmp" + strings::to_string(this_thread::get_id()) : tmp;
if (!write(tmpFileName))
{
LOG(LERROR, ("Can't write to", tmpFileName));
return false;
}
if (!RenameFileX(tmpFileName, dest))
{
LOG(LERROR, ("Can't rename file", tmpFileName, "to", dest));
DeleteFileX(tmpFileName);
return false;
}
return true;
}
bool CopyFileX(string const & fOld, string const & fNew)
{
try

10
coding/internal/file_data.hpp
View file

@ -3,9 +3,10 @@
#include "base/base.hpp"
#include "std/functional.hpp"
#include "std/noncopyable.hpp"
#include "std/string.hpp"
#include "std/target_os.hpp"
#include "std/noncopyable.hpp"
#ifdef OMIM_OS_TIZEN
namespace Tizen
@ -58,8 +59,13 @@ private:
bool GetFileSize(string const & fName, uint64_t & sz);
bool DeleteFileX(string const & fName);
bool RenameFileX(string const & fOld, string const & fNew);
/// Write to temp file and rename it to dest. Delete temp on failure.
/// @param write function that writes to file with a given name, returns true on success.
bool WriteToTempAndRenameToFile(string const & dest, function<bool(string const &)> const & write,
string const & tmp = "");
/// @return false if copy fails. DO NOT THROWS exceptions
bool CopyFileX(string const & fOld, string const & fNew);
bool IsEqualFiles(string const & firstFile, string const & secondFile);
}

241
editor/editor_notes.cpp
View file

@ -6,9 +6,9 @@
#include "geometry/mercator.hpp"
#include "base/string_utils.hpp"
#include "base/assert.hpp"
#include "base/logging.hpp"
#include "base/string_utils.hpp"
#include "base/timer.hpp"
#include "std/future.hpp"
@ -17,174 +17,187 @@
namespace
{
bool LoadFromXml(pugi::xml_document const & xml,
vector<editor::Note> & notes,
bool LoadFromXml(pugi::xml_document const & xml, list<editor::Note> & notes,
uint32_t & uploadedNotesCount)
{
uint64_t notesCount;
auto const root = xml.child("notes");
if (!strings::to_uint64(root.attribute("count").value(), notesCount))
return false;
uploadedNotesCount = static_cast<uint32_t>(notesCount);
if (!strings::to_uint64(root.attribute("uploadedNotesCount").value(), notesCount))
{
LOG(LERROR, ("Can't read uploadedNotesCount from file."));
uploadedNotesCount = 0;
}
else
{
uploadedNotesCount = static_cast<uint32_t>(notesCount);
}
for (auto const xNode : root.select_nodes("note"))
{
m2::PointD point;
ms::LatLon latLon;
auto const node = xNode.node();
auto const point_x = node.attribute("x");
if (!point_x || !strings::to_double(point_x.value(), point.x))
return false;
auto const lat = node.attribute("lat");
if (!lat || !strings::to_double(lat.value(), latLon.lat))
continue;
auto const point_y = node.attribute("y");
if (!point_y || !strings::to_double(point_y.value(), point.y))
return false;
auto const lon = node.attribute("lon");
if (!lon || !strings::to_double(lon.value(), latLon.lon))
continue;
auto const text = node.attribute("text");
if (!text)
return false;
continue;
notes.emplace_back(point, text.value());
notes.emplace_back(latLon, text.value());
}
return true;
}
void SaveToXml(vector<editor::Note> const & notes,
pugi::xml_document & xml,
uint32_t const UploadedNotesCount)
void SaveToXml(list<editor::Note> const & notes, pugi::xml_document & xml,
uint32_t const uploadedNotesCount)
{
auto constexpr kDigitsAfterComma = 7;
auto root = xml.append_child("notes");
root.append_attribute("count") = UploadedNotesCount;
root.append_attribute("uploadedNotesCount") = uploadedNotesCount;
for (auto const & note : notes)
{
auto node = root.append_child("note");
node.append_attribute("x") = DebugPrint(note.m_point.x).data();
node.append_attribute("y") = DebugPrint(note.m_point.y).data();
node.append_attribute("lat") =
strings::to_string_dac(note.m_point.lat, kDigitsAfterComma).data();
node.append_attribute("lon") =
strings::to_string_dac(note.m_point.lon, kDigitsAfterComma).data();
node.append_attribute("text") = note.m_note.data();
}
}
vector<editor::Note> MoveNoteVectorAtomicly(vector<editor::Note> && notes, mutex & mu)
{
lock_guard<mutex> g(mu);
return move(notes);
}
} // namespace
namespace editor
{
shared_ptr<Notes> Notes::MakeNotes(string const & fileName)
{
return shared_ptr<Notes>(new Notes(fileName));
}
Notes::Notes(string const & fileName)
: m_fileName(fileName)
{
Load();
}
void Notes::CreateNote(m2::PointD const & point, string const & text)
{
lock_guard<mutex> g(m_mu);
m_notes.emplace_back(point, text);
Save();
}
void Notes::Upload(osm::OsmOAuth const & auth)
{
auto const launch = [this, &auth]()
{
// Capture self to keep it from destruction until this thread is done.
auto const self = shared_from_this();
return async(launch::async,
[self, auth]()
{
auto const notes = MoveNoteVectorAtomicly(move(self->m_notes),
self->m_mu);
vector<Note> unuploaded;
osm::ServerApi06 api(auth);
for (auto const & note : notes)
{
try
{
api.CreateNote(MercatorBounds::ToLatLon(note.m_point), note.m_note);
++self->m_uploadedNotes;
}
catch (osm::ServerApi06::ServerApi06Exception const & e)
{
LOG(LERROR, ("Can't upload note.", e.Msg()));
unuploaded.push_back(note);
}
}
lock_guard<mutex> g(self->m_mu);
self->m_notes.insert(end(self->m_notes), begin(unuploaded), end(unuploaded));
self->Save();
});
};
// Do not run more than one upload thread at a time.
static auto future = launch();
auto const status = future.wait_for(milliseconds(0));
if (status == future_status::ready)
future = launch();
}
bool Notes::Load()
/// Not thread-safe, use only for initialization.
bool Load(string const & fileName, list<editor::Note> & notes, uint32_t & uploadedNotesCount)
{
string content;
try
{
auto const reader = GetPlatform().GetReader(m_fileName);
auto const reader = GetPlatform().GetReader(fileName);
reader->ReadAsString(content);
}
catch (FileAbsentException const &)
{
LOG(LINFO, ("No edits file."));
// It's normal if no notes file is present.
return true;
}
catch (Reader::Exception const &)
catch (Reader::Exception const & e)
{
LOG(LERROR, ("Can't process file.", m_fileName));
LOG(LERROR, ("Can't process file.", fileName, e.Msg()));
return false;
}
pugi::xml_document xml;
if (!xml.load_buffer(content.data(), content.size()))
{
LOG(LERROR, ("Can't load notes, xml is illformed."));
LOG(LERROR, ("Can't load notes, XML is ill-formed.", content));
return false;
}
lock_guard<mutex> g(m_mu);
m_notes.clear();
if (!LoadFromXml(xml, m_notes, m_uploadedNotes))
notes.clear();
if (!LoadFromXml(xml, notes, uploadedNotesCount))
{
LOG(LERROR, ("Can't load notes, file is illformed."));
LOG(LERROR, ("Can't load notes, file is ill-formed.", content));
return false;
}
return true;
}
/// Not thread-safe, use syncronization.
bool Notes::Save()
/// Not thread-safe, use synchronization.
bool Save(string const & fileName, list<editor::Note> const & notes,
uint32_t const uploadedNotesCount)
{
pugi::xml_document xml;
SaveToXml(m_notes, xml, m_uploadedNotes);
SaveToXml(notes, xml, uploadedNotesCount);
return my::WriteToTempAndRenameToFile(
fileName, [&xml](string const & fileName) { return xml.save_file(fileName.data(), " "); });
}
} // namespace
string const tmpFileName = m_fileName + ".tmp";
if (!xml.save_file(tmpFileName.data(), " "))
{
LOG(LERROR, ("Can't save map edits into", tmpFileName));
return false;
}
else if (!my::RenameFileX(tmpFileName, m_fileName))
{
LOG(LERROR, ("Can't rename file", tmpFileName, "to", m_fileName));
return false;
}
return true;
namespace editor
{
shared_ptr<Notes> Notes::MakeNotes(string const & fileName, bool const fullPath)
{
return shared_ptr<Notes>(
new Notes(fullPath ? fileName : GetPlatform().WritablePathForFile(fileName)));
}
Notes::Notes(string const & fileName) : m_fileName(fileName)
{
Load(m_fileName, m_notes, m_uploadedNotesCount);
}
void Notes::CreateNote(m2::PointD const & point, string const & text)
{
lock_guard<mutex> g(m_mu);
m_notes.emplace_back(MercatorBounds::ToLatLon(point), text);
Save(m_fileName, m_notes, m_uploadedNotesCount);
}
void Notes::Upload(osm::OsmOAuth const & auth)
{
// Capture self to keep it from destruction until this thread is done.
auto const self = shared_from_this();
auto const doUpload = [self, auth]() {
size_t size;
{
lock_guard<mutex> g(self->m_mu);
size = self->m_notes.size();
}
osm::ServerApi06 api(auth);
auto it = begin(self->m_notes);
for (size_t i = 0; i != size; ++i, ++it)
{
try
{
auto const id = api.CreateNote(it->m_point, it->m_note);
LOG(LINFO, ("A note uploaded with id", id));
}
catch (osm::ServerApi06::ServerApi06Exception const & e)
{
LOG(LERROR, ("Can't upload note.", e.Msg()));
// We believe that next iterations will suffer from the same error.
return;
}
lock_guard<mutex> g(self->m_mu);
it = self->m_notes.erase(it);
++self->m_uploadedNotesCount;
Save(self->m_fileName, self->m_notes, self->m_uploadedNotesCount);
}
};
// Do not run more than one upload thread at a time.
static auto future = async(launch::async, doUpload);
auto const status = future.wait_for(milliseconds(0));
if (status == future_status::ready)
future = async(launch::async, doUpload);
}
vector<Note> const Notes::GetNotes() const
{
lock_guard<mutex> g(m_mu);
return {begin(m_notes), end(m_notes)};
}
uint32_t Notes::NotUploadedNotesCount() const
{
lock_guard<mutex> g(m_mu);
return m_notes.size();
}
uint32_t Notes::UploadedNotesCount() const
{
lock_guard<mutex> g(m_mu);
return m_uploadedNotesCount;
}
} // namespace editor

37
editor/editor_notes.hpp
View file

@ -1,25 +1,22 @@
#pragma once
#include "geometry/point2d.hpp"
#include "editor/server_api.hpp"
#include "geometry/latlon.hpp"
#include "base/macros.hpp"
#include "std/list.hpp"
#include "std/mutex.hpp"
#include "std/shared_ptr.hpp"
#include "std/string.hpp"
#include "std/vector.hpp"
namespace editor
{
struct Note
{
Note(m2::PointD const & point, string const & text)
: m_point(point),
m_note(text)
{
}
m2::PointD m_point;
Note(ms::LatLon const & point, string const & text) : m_point(point), m_note(text) {}
ms::LatLon m_point;
string m_note;
};
@ -31,29 +28,31 @@ inline bool operator==(Note const & a, Note const & b)
class Notes : public enable_shared_from_this<Notes>
{
public:
static shared_ptr<Notes> MakeNotes(string const & fileName);
static shared_ptr<Notes> MakeNotes(string const & fileName = "notes.xml",
bool const fullPath = false);
void CreateNote(m2::PointD const & point, string const & text);
/// Uploads notes to the server in a separate thread.
void Upload(osm::OsmOAuth const & auth);
vector<Note> const & GetNotes() const { return m_notes; }
vector<Note> const GetNotes() const;
uint32_t UnuploadedNotesCount() const { return m_notes.size(); }
uint32_t UploadedNotesCount() const { return m_uploadedNotes; }
uint32_t NotUploadedNotesCount() const;
uint32_t UploadedNotesCount() const;
private:
Notes(string const & fileName);
bool Load();
bool Save();
string const m_fileName;
mutable mutex m_mu;
vector<Note> m_notes;
// m_notes keeps the notes that have not been uploaded yet.
// Once a note has been uploaded, it is removed from m_notes.
list<Note> m_notes;
uint32_t m_uploadedNotes;
uint32_t m_uploadedNotesCount = 0;
DISALLOW_COPY_AND_MOVE(Notes);
};
} // namespace

40
editor/editor_tests/editor_notes_test.cpp
View file

@ -2,39 +2,41 @@
#include "editor/editor_notes.hpp"
#include "geometry/mercator.hpp"
#include "platform/platform_tests_support/scoped_file.hpp"
#include "coding/file_name_utils.hpp"
#include "base/math.hpp"
using namespace editor;
namespace editor
{
string DebugPrint(Note const & note)
{
return "Note(" + DebugPrint(note.m_point) + ", \"" + note.m_note + "\")";
}
} // namespace editor
UNIT_TEST(Notes)
UNIT_TEST(Notes_Smoke)
{
auto const fileName = "notes.xml";
auto const fullFileName = Platform::PathJoin({GetPlatform().WritableDir(),
fileName});
auto const fullFileName = my::JoinFoldersToPath({GetPlatform().WritableDir()}, fileName);
platform::tests_support::ScopedFile sf(fileName);
{
auto const notes = Notes::MakeNotes(fullFileName);
auto const notes = Notes::MakeNotes(fullFileName, true);
notes->CreateNote({1, 2}, "Some note1");
notes->CreateNote({2, 2}, "Some note2");
notes->CreateNote({1, 1}, "Some note3");
}
{
auto const notes = Notes::MakeNotes(fullFileName);
auto const notes = Notes::MakeNotes(fullFileName, true);
auto const result = notes->GetNotes();
TEST_EQUAL(result.size(), 3, ());
TEST_EQUAL(result,
(vector<Note>{
{{1, 2}, "Some note1"},
{{2, 2}, "Some note2"},
{{1, 1}, "Some note3"}
}), ());
vector<Note> const expected {
{MercatorBounds::ToLatLon({1, 2}), "Some note1"},
{MercatorBounds::ToLatLon({2, 2}), "Some note2"},
{MercatorBounds::ToLatLon({1, 1}), "Some note3"}
};
for (auto i = 0; i < result.size(); ++i)
{
TEST(my::AlmostEqualAbs(result[i].m_point.lat, expected[i].m_point.lat, 1e-7), ());
TEST(my::AlmostEqualAbs(result[i].m_point.lon, expected[i].m_point.lon, 1e-7), ());
TEST_EQUAL(result[i].m_note, expected[i].m_note, ());
}
}
}

31
indexer/osm_editor.cpp
View file

@ -48,8 +48,6 @@ using editor::XMLFeature;
namespace
{
constexpr char const * kEditorXMLFileName = "edits.xml";
// TODO(mgsergio): Hide in notes.
constexpr char const * kNotesXMLFileName = "notes.xml";
constexpr char const * kXmlRootNode = "mapsme";
constexpr char const * kXmlMwmNode = "mwm";
constexpr char const * kDeleteSection = "delete";
@ -68,7 +66,6 @@ bool NeedsUpload(string const & uploadStatus)
}
string GetEditorFilePath() { return GetPlatform().WritablePathForFile(kEditorXMLFileName); }
string GetNotesFilePath() { return GetPlatform().WritablePathForFile(kNotesXMLFileName); }
/// Compares editable fields connected with feature ignoring street.
bool AreFeaturesEqualButStreet(FeatureType const & a, FeatureType const & b)
@ -131,11 +128,7 @@ namespace osm
// TODO(AlexZ): Normalize osm multivalue strings for correct merging
// (e.g. insert/remove spaces after ';' delimeter);
Editor::Editor()
: m_notes(editor::Notes::MakeNotes(GetNotesFilePath()))
{
}
Editor::Editor() : m_notes(editor::Notes::MakeNotes()) {}
Editor & Editor::Instance()
{
static Editor instance;
@ -300,18 +293,12 @@ bool Editor::Save(string const & fullFilePath) const
}
}
string const tmpFileName = fullFilePath + ".tmp";
if (!doc.save_file(tmpFileName.data(), " "))
{
LOG(LERROR, ("Can't save map edits into", tmpFileName));
return false;
}
else if (!my::RenameFileX(tmpFileName, fullFilePath))
{
LOG(LERROR, ("Can't rename file", tmpFileName, "to", fullFilePath));
return false;
}
return true;
return my::WriteToTempAndRenameToFile(
fullFilePath,
[&doc](string const & fileName)
{
return doc.save_file(fileName.data(), " ");
});
}
void Editor::ClearAllLocalEdits()
@ -510,6 +497,8 @@ EditableProperties Editor::GetEditablePropertiesForTypes(feature::TypesHolder co
bool Editor::HaveSomethingToUpload() const
{
if (m_notes->NotUploadedNotesCount() != 0)
return true;
for (auto const & id : m_features)
{
for (auto const & index : id.second)
@ -538,7 +527,7 @@ bool Editor::HaveSomethingToUpload(MwmSet::MwmId const & mwmId) const
void Editor::UploadChanges(string const & key, string const & secret, TChangesetTags tags,
TFinishUploadCallback callBack)
{
if (m_notes->UnuploadedNotesCount())
if (m_notes->NotUploadedNotesCount())
UploadNotes(key, secret);
if (!HaveSomethingToUpload())

10
platform/platform.cpp
View file

@ -94,16 +94,6 @@ bool Platform::RmDirRecursively(string const & dirName)
return res;
}
string Platform::PathJoin(vector<string> const & parts)
{
#ifdef OMIM_OS_WINDOWS
auto const delimiter = "\\";
#else
auto const delimiter = "/";
#endif
return strings::JoinStrings(parts, delimiter);
}
string Platform::ReadPathForFile(string const & file, string searchScope) const
{
if (searchScope.empty())

2
platform/platform.hpp
View file

@ -115,8 +115,6 @@ public:
/// @note If function fails, directory can be partially removed.
static bool RmDirRecursively(string const & dirName);
static string PathJoin(vector<string> const & parts);
/// @return path for directory with temporary files with slash at the end
string TmpDir() const { return m_tmpDir; }
/// @return full path to file in the temporary directory

11
platform/platform_tests/platform_test.cpp
View file

@ -258,14 +258,3 @@ UNIT_TEST(IsSingleMwm)
TEST(!version::IsSingleMwm(version::FOR_TESTING_TWO_COMPONENT_MWM1), ());
TEST(!version::IsSingleMwm(version::FOR_TESTING_TWO_COMPONENT_MWM2), ());
}
UNIT_TEST(PathJoin)
{
#ifdef OMIM_OS_WINDOWS
TEST_EQUAL("foo\\bar", Platform::PathJoin({"foo", "bar"}), ());
TEST_EQUAL("foo\\bar\\baz", Platform::PathJoin({"foo", "bar", "baz"}), ());
#else
TEST_EQUAL("foo/bar", Platform::PathJoin({"foo", "bar"}), ());
TEST_EQUAL("foo/bar/baz", Platform::PathJoin({"foo", "bar", "baz"}), ());
#endif
}

2
std/functional.hpp
View file

@ -10,6 +10,8 @@ using std::less_equal;
using std::greater;
using std::equal_to;
using std::hash;
using std::function;
using std::ref;
#ifdef DEBUG_NEW
#define new DEBUG_NEW