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arangodb/arangod/VocBase/collection.cpp

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
////////////////////////////////////////////////////////////////////////////////
#include "collection.h"
#include <regex.h>
#include "Basics/conversions.h"
#include "Basics/files.h"
#include "Basics/FileUtils.h"
#include "Basics/hashes.h"
#include "Basics/json.h"
#include "Basics/JsonHelper.h"
#include "Basics/Logger.h"
#include "Basics/random.h"
#include "Basics/tri-strings.h"
#include "Basics/memory-map.h"
#include "Basics/VelocyPackHelper.h"
#include "Cluster/ClusterInfo.h"
#include "VocBase/document-collection.h"
#include "VocBase/server.h"
#include "VocBase/vocbase.h"
#include <velocypack/Collection.h>
#include <velocypack/velocypack-aliases.h>
using namespace arangodb;
////////////////////////////////////////////////////////////////////////////////
/// @brief extract the numeric part from a filename
/// the filename must look like this: /.*type-abc\.ending$/, where abc is
/// a number, and type and ending are arbitrary letters
////////////////////////////////////////////////////////////////////////////////
static uint64_t GetNumericFilenamePart(char const* filename) {
char const* pos1 = strrchr(filename, '.');
if (pos1 == nullptr) {
return 0;
}
char const* pos2 = strrchr(filename, '-');
if (pos2 == nullptr || pos2 > pos1) {
return 0;
}
return TRI_UInt64String2(pos2 + 1, pos1 - pos2 - 1);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief compare two filenames, based on the numeric part contained in
/// the filename. this is used to sort datafile filenames on startup
////////////////////////////////////////////////////////////////////////////////
static int FilenameComparator(const void* lhs, const void* rhs) {
char const* l = *((char**)lhs);
char const* r = *((char**)rhs);
uint64_t const numLeft = GetNumericFilenamePart(l);
uint64_t const numRight = GetNumericFilenamePart(r);
if (numLeft != numRight) {
return numLeft < numRight ? -1 : 1;
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief compare two datafiles, based on the numeric part contained in
/// the filename
////////////////////////////////////////////////////////////////////////////////
static int DatafileComparator(const void* lhs, const void* rhs) {
TRI_datafile_t* l = *((TRI_datafile_t**)lhs);
TRI_datafile_t* r = *((TRI_datafile_t**)rhs);
uint64_t const numLeft =
(l->_filename != nullptr ? GetNumericFilenamePart(l->_filename) : 0);
uint64_t const numRight =
(r->_filename != nullptr ? GetNumericFilenamePart(r->_filename) : 0);
if (numLeft != numRight) {
return numLeft < numRight ? -1 : 1;
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief sort a vector of filenames, using the numeric parts contained
////////////////////////////////////////////////////////////////////////////////
static void SortFilenames(TRI_vector_string_t* files) {
if (files->_length <= 1) {
return;
}
qsort(files->_buffer, files->_length, sizeof(char*), &FilenameComparator);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief sort a vector of datafiles, using the numeric parts contained
////////////////////////////////////////////////////////////////////////////////
static void SortDatafiles(TRI_vector_pointer_t* files) {
if (files->_length <= 1) {
return;
}
qsort(files->_buffer, files->_length, sizeof(TRI_datafile_t*),
&DatafileComparator);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief initializes a new collection
////////////////////////////////////////////////////////////////////////////////
static void InitCollection(TRI_vocbase_t* vocbase, TRI_collection_t* collection,
std::string const& directory, VocbaseCollectionInfo const& info) {
TRI_ASSERT(collection != nullptr);
collection->_info.update(info);
collection->_vocbase = vocbase;
collection->_tickMax = 0;
collection->_state = TRI_COL_STATE_WRITE;
collection->_lastError = 0;
collection->_directory = TRI_DuplicateString(TRI_UNKNOWN_MEM_ZONE, directory.c_str(), directory.size());
TRI_InitVectorPointer(&collection->_datafiles, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorPointer(&collection->_journals, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorPointer(&collection->_compactors, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorString(&collection->_indexFiles, TRI_CORE_MEM_ZONE);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief scans a collection and locates all files
////////////////////////////////////////////////////////////////////////////////
static TRI_col_file_structure_t ScanCollectionDirectory(char const* path) {
TRI_col_file_structure_t structure;
regex_t re;
TRI_InitVectorString(&structure._journals, TRI_CORE_MEM_ZONE);
TRI_InitVectorString(&structure._compactors, TRI_CORE_MEM_ZONE);
TRI_InitVectorString(&structure._datafiles, TRI_CORE_MEM_ZONE);
TRI_InitVectorString(&structure._indexes, TRI_CORE_MEM_ZONE);
if (regcomp(&re,
"^(temp|compaction|journal|datafile|index|compactor)-([0-9][0-9]*"
")\\.(db|json)(\\.dead)?$",
REG_EXTENDED) != 0) {
LOG(ERR) << "unable to compile regular expression";
return structure;
}
// check files within the directory
std::vector<std::string> files = TRI_FilesDirectory(path);
for (auto const& file : files) {
regmatch_t matches[5];
if (regexec(&re, file.c_str(), sizeof(matches) / sizeof(matches[0]),
matches, 0) == 0) {
// file type: (journal|datafile|index|compactor)
char const* first = file.c_str() + matches[1].rm_so;
size_t firstLen = matches[1].rm_eo - matches[1].rm_so;
// extension
char const* third = file.c_str() + matches[3].rm_so;
size_t thirdLen = matches[3].rm_eo - matches[3].rm_so;
// isdead?
size_t fourthLen = matches[4].rm_eo - matches[4].rm_so;
// .............................................................................
// file is dead
// .............................................................................
if (fourthLen > 0) {
char* filename;
filename = TRI_Concatenate2File(path, file.c_str());
if (filename != nullptr) {
LOG(TRACE) << "removing .dead file '" << filename << "'";
TRI_UnlinkFile(filename);
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
}
}
// .............................................................................
// file is an index
// .............................................................................
else if (TRI_EqualString("index", first, firstLen) &&
TRI_EqualString("json", third, thirdLen)) {
char* filename;
filename = TRI_Concatenate2File(path, file.c_str());
TRI_PushBackVectorString(&structure._indexes, filename);
}
// .............................................................................
// file is a journal or datafile
// .............................................................................
else if (TRI_EqualString("db", third, thirdLen)) {
std::string filename = TRI_Concatenate2File(path, file.c_str());
// file is a journal
if (TRI_EqualString("journal", first, firstLen)) {
TRI_PushBackVectorString(&structure._journals,
TRI_DuplicateString(filename.c_str()));
}
// file is a datafile
else if (TRI_EqualString("datafile", first, firstLen)) {
TRI_PushBackVectorString(&structure._datafiles,
TRI_DuplicateString(filename.c_str()));
}
// file is a left-over compaction file. rename it back
else if (TRI_EqualString("compaction", first, firstLen)) {
char* relName;
char* newName;
relName = TRI_Concatenate2String(
"datafile-", file.c_str() + strlen("compaction-"));
newName = TRI_Concatenate2File(path, relName);
TRI_FreeString(TRI_CORE_MEM_ZONE, relName);
if (TRI_ExistsFile(newName)) {
// we have a compaction-xxxx and a datafile-xxxx file. we'll keep
// the datafile
TRI_UnlinkFile(filename.c_str());
LOG(WARN) << "removing left-over compaction file '" << filename.c_str() << "'";
TRI_FreeString(TRI_CORE_MEM_ZONE, newName);
continue;
} else {
int res;
// this should fail, but shouldn't do any harm either...
TRI_UnlinkFile(newName);
// rename the compactor to a datafile
res = TRI_RenameFile(filename.c_str(), newName);
if (res != TRI_ERROR_NO_ERROR) {
LOG(ERR) << "unable to rename compaction file '" << filename.c_str() << "'";
TRI_FreeString(TRI_CORE_MEM_ZONE, newName);
continue;
}
}
TRI_PushBackVectorString(&structure._datafiles, newName);
}
// temporary file, we can delete it!
else if (TRI_EqualString("temp", first, firstLen)) {
LOG(WARN) << "found temporary file '" << filename.c_str() << "', which is probably a left-over. deleting it";
TRI_UnlinkFile(filename.c_str());
}
// ups, what kind of file is that
else {
LOG(ERR) << "unknown datafile type '" << file.c_str() << "'";
}
} else {
LOG(ERR) << "unknown datafile type '" << file.c_str() << "'";
}
}
}
regfree(&re);
// now sort the files in the structures that we created.
// the sorting allows us to iterate the files in the correct order
SortFilenames(&structure._journals);
SortFilenames(&structure._compactors);
SortFilenames(&structure._datafiles);
SortFilenames(&structure._indexes);
return structure;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief checks a collection
////////////////////////////////////////////////////////////////////////////////
static bool CheckCollection(TRI_collection_t* collection, bool ignoreErrors) {
TRI_datafile_t* datafile;
TRI_vector_pointer_t all;
TRI_vector_pointer_t compactors;
TRI_vector_pointer_t datafiles;
TRI_vector_pointer_t journals;
TRI_vector_pointer_t sealed;
bool stop;
regex_t re;
if (regcomp(&re,
"^(temp|compaction|journal|datafile|index|compactor)-([0-9][0-9]*"
")\\.(db|json)(\\.dead)?$",
REG_EXTENDED) != 0) {
LOG(ERR) << "unable to compile regular expression";
return false;
}
stop = false;
// check files within the directory
std::vector<std::string> files = TRI_FilesDirectory(collection->_directory);
TRI_InitVectorPointer(&journals, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorPointer(&compactors, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorPointer(&datafiles, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorPointer(&sealed, TRI_UNKNOWN_MEM_ZONE);
TRI_InitVectorPointer(&all, TRI_UNKNOWN_MEM_ZONE);
for (auto const& file : files) {
regmatch_t matches[5];
if (regexec(&re, file.c_str(), sizeof(matches) / sizeof(matches[0]),
matches, 0) == 0) {
char const* first = file.c_str() + matches[1].rm_so;
size_t firstLen = matches[1].rm_eo - matches[1].rm_so;
char const* third = file.c_str() + matches[3].rm_so;
size_t thirdLen = matches[3].rm_eo - matches[3].rm_so;
size_t fourthLen = matches[4].rm_eo - matches[4].rm_so;
// check for temporary & dead files
if (fourthLen > 0 || TRI_EqualString("temp", first, firstLen)) {
// found a temporary file. we can delete it!
char* filename;
filename = TRI_Concatenate2File(collection->_directory, file.c_str());
LOG(TRACE) << "found temporary file '" << filename << "', which is probably a left-over. deleting it";
TRI_UnlinkFile(filename);
TRI_Free(TRI_CORE_MEM_ZONE, filename);
continue;
}
// .............................................................................
// file is an index, just store the filename
// .............................................................................
if (TRI_EqualString("index", first, firstLen) &&
TRI_EqualString("json", third, thirdLen)) {
char* filename;
filename = TRI_Concatenate2File(collection->_directory, file.c_str());
TRI_PushBackVectorString(&collection->_indexFiles, filename);
}
// .............................................................................
// file is a journal or datafile, open the datafile
// .............................................................................
else if (TRI_EqualString("db", third, thirdLen)) {
char* filename;
char* ptr;
TRI_col_header_marker_t* cm;
if (TRI_EqualString("compaction", first, firstLen)) {
// found a compaction file. now rename it back
char* relName;
char* newName;
filename = TRI_Concatenate2File(collection->_directory, file.c_str());
relName = TRI_Concatenate2String(
"datafile-", file.c_str() + strlen("compaction-"));
newName = TRI_Concatenate2File(collection->_directory, relName);
TRI_FreeString(TRI_CORE_MEM_ZONE, relName);
if (TRI_ExistsFile(newName)) {
// we have a compaction-xxxx and a datafile-xxxx file. we'll keep
// the datafile
LOG(WARN) << "removing unfinished compaction file '" << filename << "'";
TRI_UnlinkFile(filename);
TRI_FreeString(TRI_CORE_MEM_ZONE, newName);
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
continue;
} else {
int res;
res = TRI_RenameFile(filename, newName);
if (res != TRI_ERROR_NO_ERROR) {
LOG(ERR) << "unable to rename compaction file '" << filename << "' to '" << newName << "'";
TRI_FreeString(TRI_CORE_MEM_ZONE, newName);
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
stop = true;
break;
}
}
TRI_Free(TRI_CORE_MEM_ZONE, filename);
// reuse newName
filename = newName;
} else {
filename = TRI_Concatenate2File(collection->_directory, file.c_str());
}
TRI_ASSERT(filename != nullptr);
datafile = TRI_OpenDatafile(filename, ignoreErrors);
if (datafile == nullptr) {
collection->_lastError = TRI_errno();
LOG(ERR) << "cannot open datafile '" << filename << "': " << TRI_last_error();
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
stop = true;
break;
}
TRI_PushBackVectorPointer(&all, datafile);
// check the document header
ptr = datafile->_data;
// skip the datafile header
ptr += TRI_DF_ALIGN_BLOCK(sizeof(TRI_df_header_marker_t));
cm = (TRI_col_header_marker_t*)ptr;
if (cm->base._type != TRI_COL_MARKER_HEADER) {
LOG(ERR) << "collection header mismatch in file '" << filename << "', expected TRI_COL_MARKER_HEADER, found " << cm->base._type;
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
stop = true;
break;
}
if (cm->_cid != collection->_info.id()) {
LOG(ERR) << "collection identifier mismatch, expected " << collection->_info.id() << ", found " << cm->_cid;
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
stop = true;
break;
}
// file is a journal
if (TRI_EqualString("journal", first, firstLen)) {
if (datafile->_isSealed) {
if (datafile->_state != TRI_DF_STATE_READ) {
LOG(WARN) << "strange, journal '" << filename << "' is already sealed; must be a left over; will use it as datafile";
}
TRI_PushBackVectorPointer(&sealed, datafile);
} else {
TRI_PushBackVectorPointer(&journals, datafile);
}
}
// file is a compactor
else if (TRI_EqualString("compactor", first, firstLen)) {
// ignore
}
// file is a datafile (or was a compaction file)
else if (TRI_EqualString("datafile", first, firstLen) ||
TRI_EqualString("compaction", first, firstLen)) {
if (!datafile->_isSealed) {
LOG(ERR) << "datafile '" << filename << "' is not sealed, this should never happen";
collection->_lastError =
TRI_set_errno(TRI_ERROR_ARANGO_CORRUPTED_DATAFILE);
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
stop = true;
break;
} else {
TRI_PushBackVectorPointer(&datafiles, datafile);
}
}
else {
LOG(ERR) << "unknown datafile '" << file.c_str() << "'";
}
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
} else {
LOG(ERR) << "unknown datafile '" << file.c_str() << "'";
}
}
}
regfree(&re);
size_t i, n;
// convert the sealed journals into datafiles
if (!stop) {
n = sealed._length;
for (i = 0; i < n; ++i) {
char* number;
char* dname;
char* filename;
bool ok;
datafile = static_cast<TRI_datafile_t*>(sealed._buffer[i]);
number = TRI_StringUInt64(datafile->_fid);
dname = TRI_Concatenate3String("datafile-", number, ".db");
filename = TRI_Concatenate2File(collection->_directory, dname);
TRI_FreeString(TRI_CORE_MEM_ZONE, dname);
TRI_FreeString(TRI_CORE_MEM_ZONE, number);
ok = TRI_RenameDatafile(datafile, filename);
if (ok) {
TRI_PushBackVectorPointer(&datafiles, datafile);
LOG(DEBUG) << "renamed sealed journal to '" << filename << "'";
} else {
collection->_lastError = datafile->_lastError;
stop = true;
LOG(ERR) << "cannot rename sealed log-file to " << filename << ", this should not happen: " << TRI_last_error();
break;
}
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
}
}
TRI_DestroyVectorPointer(&sealed);
// stop if necessary
if (stop) {
n = all._length;
for (i = 0; i < n; ++i) {
datafile = static_cast<TRI_datafile_t*>(all._buffer[i]);
LOG(TRACE) << "closing datafile '" << datafile->_filename << "'";
TRI_CloseDatafile(datafile);
TRI_FreeDatafile(datafile);
}
TRI_DestroyVectorPointer(&all);
TRI_DestroyVectorPointer(&datafiles);
return false;
}
TRI_DestroyVectorPointer(&all);
// sort the datafiles.
// this allows us to iterate them in the correct order
SortDatafiles(&datafiles);
SortDatafiles(&journals);
SortDatafiles(&compactors);
// add the datafiles and journals
collection->_datafiles = datafiles;
collection->_journals = journals;
collection->_compactors = compactors;
return true;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief free all datafiles in a vector
////////////////////////////////////////////////////////////////////////////////
static void FreeDatafilesVector(TRI_vector_pointer_t* vector) {
TRI_ASSERT(vector != nullptr);
size_t const n = vector->_length;
for (size_t i = 0; i < n; ++i) {
TRI_datafile_t* datafile = static_cast<TRI_datafile_t*>(vector->_buffer[i]);
LOG(TRACE) << "freeing collection datafile";
TRI_ASSERT(datafile != nullptr);
TRI_FreeDatafile(datafile);
}
TRI_DestroyVectorPointer(vector);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief iterate over all datafiles in a vector
////////////////////////////////////////////////////////////////////////////////
static bool IterateDatafilesVector(const TRI_vector_pointer_t* const files,
bool (*iterator)(TRI_df_marker_t const*,
void*, TRI_datafile_t*),
void* data) {
TRI_ASSERT(iterator != nullptr);
size_t const n = files->_length;
for (size_t i = 0; i < n; ++i) {
TRI_datafile_t* datafile =
static_cast<TRI_datafile_t*>(TRI_AtVectorPointer(files, i));
LOG(TRACE) << "iterating over datafile '" << datafile->getName(datafile) << "', fid " << datafile->_fid;
if (!TRI_IterateDatafile(datafile, iterator, data)) {
return false;
}
if (datafile->isPhysical(datafile) && datafile->_isSealed) {
TRI_MMFileAdvise(datafile->_data, datafile->_maximalSize,
TRI_MADVISE_RANDOM);
}
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief closes the datafiles passed in the vector
////////////////////////////////////////////////////////////////////////////////
static bool CloseDataFiles(const TRI_vector_pointer_t* const files) {
bool result = true;
size_t const n = files->_length;
for (size_t i = 0; i < n; ++i) {
TRI_datafile_t* datafile = static_cast<TRI_datafile_t*>(files->_buffer[i]);
TRI_ASSERT(datafile != nullptr);
result &= TRI_CloseDatafile(datafile);
}
return result;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief iterate over a set of datafiles, identified by filenames
/// note: the files will be opened and closed
////////////////////////////////////////////////////////////////////////////////
static bool IterateFiles(TRI_vector_string_t* vector,
bool (*iterator)(TRI_df_marker_t const*, void*,
TRI_datafile_t*),
void* data) {
TRI_ASSERT(iterator != nullptr);
size_t const n = vector->_length;
for (size_t i = 0; i < n; ++i) {
char* filename = TRI_AtVectorString(vector, i);
LOG(DEBUG) << "iterating over collection journal file '" << filename << "'";
TRI_datafile_t* datafile = TRI_OpenDatafile(filename, true);
if (datafile != nullptr) {
TRI_IterateDatafile(datafile, iterator, data);
TRI_CloseDatafile(datafile);
TRI_FreeDatafile(datafile);
}
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief get the full directory name for a collection
////////////////////////////////////////////////////////////////////////////////
static std::string GetCollectionDirectory(char const* path, char const* name,
TRI_voc_cid_t cid) {
TRI_ASSERT(path != nullptr);
TRI_ASSERT(name != nullptr);
std::string filename("collection-");
filename.append(std::to_string(cid));
filename.push_back('-');
filename.append(std::to_string(TRI_UInt32Random()));
return arangodb::basics::FileUtils::buildFilename(path, filename);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief creates a new collection
////////////////////////////////////////////////////////////////////////////////
TRI_collection_t* TRI_CreateCollection(
TRI_vocbase_t* vocbase, TRI_collection_t* collection, char const* path,
arangodb::VocbaseCollectionInfo const& parameters) {
// sanity check
if (sizeof(TRI_df_header_marker_t) + sizeof(TRI_df_footer_marker_t) >
parameters.maximalSize()) {
TRI_set_errno(TRI_ERROR_ARANGO_DATAFILE_FULL);
LOG(ERR) << "cannot create datafile '" << parameters.namec_str() << "' in '" << path << "', maximal size '" << (unsigned int)parameters.maximalSize() << "' is too small";
return nullptr;
}
if (!TRI_IsDirectory(path)) {
TRI_set_errno(TRI_ERROR_ARANGO_DATADIR_INVALID);
LOG(ERR) << "cannot create collection '" << path << "', path is not a directory";
return nullptr;
}
std::string const dirname = GetCollectionDirectory(
path, parameters.namec_str(), parameters.id());
// directory must not exist
if (TRI_ExistsFile(dirname.c_str())) {
TRI_set_errno(TRI_ERROR_ARANGO_COLLECTION_DIRECTORY_ALREADY_EXISTS);
LOG(ERR) << "cannot create collection '" << parameters.namec_str() << "' in directory '" << dirname.c_str() << "': directory already exists";
return nullptr;
}
// use a temporary directory first. this saves us from leaving an empty
// directory
// behind, an the server refusing to start
std::string const tmpname = dirname + ".tmp";
// create directory
std::string errorMessage;
long systemError;
int res = TRI_CreateDirectory(tmpname.c_str(), systemError, errorMessage);
if (res != TRI_ERROR_NO_ERROR) {
LOG(ERR) << "cannot create collection '" << parameters.namec_str() << "' in directory '" << path << "': " << TRI_errno_string(res) << " - " << systemError << " - " << errorMessage.c_str();
return nullptr;
}
TRI_IF_FAILURE("CreateCollection::tempDirectory") {
return nullptr;
}
// create a temporary file
std::string const tmpfile(arangodb::basics::FileUtils::buildFilename(tmpname.c_str(), ".tmp"));
res = TRI_WriteFile(tmpfile.c_str(), "", 0);
TRI_IF_FAILURE("CreateCollection::tempFile") {
return nullptr;
}
if (res != TRI_ERROR_NO_ERROR) {
LOG(ERR) << "cannot create collection '" << parameters.namec_str() << "' in directory '" << path << "': " << TRI_errno_string(res) << " - " << systemError << " - " << errorMessage.c_str();
TRI_RemoveDirectory(tmpname.c_str());
return nullptr;
}
TRI_IF_FAILURE("CreateCollection::renameDirectory") {
return nullptr;
}
res = TRI_RenameFile(tmpname.c_str(), dirname.c_str());
if (res != TRI_ERROR_NO_ERROR) {
LOG(ERR) << "cannot create collection '" << parameters.namec_str() << "' in directory '" << path << "': " << TRI_errno_string(res) << " - " << systemError << " - " << errorMessage.c_str();
TRI_RemoveDirectory(tmpname.c_str());
return nullptr;
}
// now we have the collection directory in place with the correct name and a
// .tmp file in it
// create collection structure
if (collection == nullptr) {
try {
TRI_collection_t* tmp = new TRI_collection_t(parameters);
collection = tmp;
// new TRI_collection_t(parameters);
} catch (std::exception&) {
collection = nullptr;
}
if (collection == nullptr) {
LOG(ERR) << "cannot create collection '" << path << "': out of memory";
return nullptr;
}
}
InitCollection(vocbase, collection, dirname, parameters);
/* PANAIA: 1) the parameter file if it exists must be removed
2) if collection
*/
return collection;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief frees the memory allocated, but does not free the pointer
///
/// Note that the collection must be closed first.
////////////////////////////////////////////////////////////////////////////////
void TRI_DestroyCollection(TRI_collection_t* collection) {
TRI_ASSERT(collection);
collection->_info.clearKeyOptions();
FreeDatafilesVector(&collection->_datafiles);
FreeDatafilesVector(&collection->_journals);
FreeDatafilesVector(&collection->_compactors);
TRI_DestroyVectorString(&collection->_indexFiles);
if (collection->_directory != nullptr) {
TRI_FreeString(TRI_CORE_MEM_ZONE, collection->_directory);
collection->_directory = nullptr;
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief frees the memory allocated and frees the pointer
////////////////////////////////////////////////////////////////////////////////
void TRI_FreeCollection(TRI_collection_t* collection) {
TRI_ASSERT(collection);
TRI_DestroyCollection(collection);
delete collection;
}
VocbaseCollectionInfo::VocbaseCollectionInfo(CollectionInfo const& other)
: _version(TRI_COL_VERSION),
_type(other.type()),
_revision(0), // not known in the cluster case on the coordinator
_cid(other.id()), // this is on the coordinator and describes a
// cluster-wide collection, for safety reasons,
// we also set _cid
_planId(other.id()),
_maximalSize(other.journalSize()),
_initialCount(-1),
_indexBuckets(other.indexBuckets()),
_keyOptions(nullptr),
_isSystem(other.isSystem()),
_deleted(other.deleted()),
_doCompact(other.doCompact()),
_isVolatile(other.isVolatile()),
_waitForSync(other.waitForSync()) {
std::string const name = other.name();
memset(_name, 0, sizeof(_name));
memcpy(_name, name.c_str(), name.size());
std::unique_ptr<TRI_json_t> otherOpts(other.keyOptions());
if (otherOpts != nullptr) {
std::shared_ptr<arangodb::velocypack::Builder> builder =
arangodb::basics::JsonHelper::toVelocyPack(otherOpts.get());
_keyOptions = builder->steal();
}
}
VocbaseCollectionInfo::VocbaseCollectionInfo(TRI_vocbase_t* vocbase,
char const* name,
TRI_col_type_e type,
TRI_voc_size_t maximalSize,
VPackSlice const& keyOptions)
: _version(TRI_COL_VERSION),
_type(type),
_revision(0),
_cid(0),
_planId(0),
_maximalSize(vocbase->_settings.defaultMaximalSize),
_initialCount(-1),
_indexBuckets(TRI_DEFAULT_INDEX_BUCKETS),
_keyOptions(nullptr),
_isSystem(false),
_deleted(false),
_doCompact(true),
_isVolatile(false),
_waitForSync(vocbase->_settings.defaultWaitForSync) {
_maximalSize =
static_cast<TRI_voc_size_t>((maximalSize / PageSize) * PageSize);
if (_maximalSize == 0 && maximalSize != 0) {
_maximalSize = static_cast<TRI_voc_size_t>(PageSize);
}
memset(_name, 0, sizeof(_name));
TRI_CopyString(_name, name, sizeof(_name) - 1);
if (!keyOptions.isNone()) {
VPackBuilder builder;
builder.add(keyOptions);
_keyOptions = builder.steal();
}
}
VocbaseCollectionInfo::VocbaseCollectionInfo(TRI_vocbase_t* vocbase,
char const* name,
VPackSlice const& options)
: VocbaseCollectionInfo(vocbase, name, TRI_COL_TYPE_DOCUMENT, options) {}
VocbaseCollectionInfo::VocbaseCollectionInfo(TRI_vocbase_t* vocbase,
char const* name,
TRI_col_type_e type,
VPackSlice const& options)
: _version(TRI_COL_VERSION),
_type(type),
_revision(0),
_cid(0),
_planId(0),
_maximalSize(vocbase->_settings.defaultMaximalSize),
_initialCount(-1),
_indexBuckets(TRI_DEFAULT_INDEX_BUCKETS),
_keyOptions(nullptr),
_isSystem(false),
_deleted(false),
_doCompact(true),
_isVolatile(false),
_waitForSync(vocbase->_settings.defaultWaitForSync) {
memset(_name, 0, sizeof(_name));
if (name != nullptr && *name != '\0') {
TRI_CopyString(_name, name, sizeof(_name) - 1);
}
if (options.isObject()) {
TRI_voc_size_t maximalSize;
if (options.hasKey("journalSize")) {
maximalSize =
arangodb::basics::VelocyPackHelper::getNumericValue<TRI_voc_size_t>(
options, "journalSize", vocbase->_settings.defaultMaximalSize);
} else {
maximalSize =
arangodb::basics::VelocyPackHelper::getNumericValue<TRI_voc_size_t>(
options, "maximalSize", vocbase->_settings.defaultMaximalSize);
}
_maximalSize =
static_cast<TRI_voc_size_t>((maximalSize / PageSize) * PageSize);
if (_maximalSize == 0 && maximalSize != 0) {
_maximalSize = static_cast<TRI_voc_size_t>(PageSize);
}
_doCompact = arangodb::basics::VelocyPackHelper::getBooleanValue(
options, "doCompact", true);
_waitForSync = arangodb::basics::VelocyPackHelper::getBooleanValue(
options, "waitForSync", vocbase->_settings.defaultWaitForSync);
_isVolatile = arangodb::basics::VelocyPackHelper::getBooleanValue(
options, "isVolatile", false);
_indexBuckets =
arangodb::basics::VelocyPackHelper::getNumericValue<uint32_t>(
options, "indexBuckets", TRI_DEFAULT_INDEX_BUCKETS);
_type = static_cast<TRI_col_type_e>(
arangodb::basics::VelocyPackHelper::getNumericValue<size_t>(
options, "type", _type));
std::string cname =
arangodb::basics::VelocyPackHelper::getStringValue(options, "name", "");
if (!cname.empty()) {
TRI_CopyString(_name, cname.c_str(), sizeof(_name) - 1);
}
std::string cidString =
arangodb::basics::VelocyPackHelper::getStringValue(options, "cid", "");
if (!cidString.empty()) {
// note: this may throw
_cid = std::stoull(cidString);
}
if (options.hasKey("isSystem")) {
VPackSlice isSystemSlice = options.get("isSystem");
if (isSystemSlice.isBoolean()) {
_isSystem = isSystemSlice.getBoolean();
}
} else {
_isSystem = false;
}
if (options.hasKey("journalSize")) {
VPackSlice maxSizeSlice = options.get("journalSize");
TRI_voc_size_t maximalSize =
maxSizeSlice.getNumericValue<TRI_voc_size_t>();
if (maximalSize < TRI_JOURNAL_MINIMAL_SIZE) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_BAD_PARAMETER,
"journalSize is too small");
}
}
VPackSlice const planIdSlice = options.get("planId");
TRI_voc_cid_t planId = 0;
if (planIdSlice.isNumber()) {
planId = planIdSlice.getNumericValue<TRI_voc_cid_t>();
} else if (planIdSlice.isString()) {
std::string tmp = planIdSlice.copyString();
planId = static_cast<TRI_voc_cid_t>(
TRI_UInt64String2(tmp.c_str(), tmp.length()));
}
if (planId > 0) {
_planId = planId;
}
VPackSlice const cidSlice = options.get("id");
if (cidSlice.isNumber()) {
_cid = cidSlice.getNumericValue<TRI_voc_cid_t>();
} else if (cidSlice.isString()) {
std::string tmp = cidSlice.copyString();
_cid = static_cast<TRI_voc_cid_t>(
TRI_UInt64String2(tmp.c_str(), tmp.length()));
}
if (options.hasKey("keyOptions")) {
VPackSlice const slice = options.get("keyOptions");
VPackBuilder builder;
builder.add(slice);
// Copy the ownership of the options over
_keyOptions = builder.steal();
}
if (options.hasKey("deleted")) {
VPackSlice const slice = options.get("deleted");
if (slice.isBoolean()) {
_deleted = slice.getBoolean();
}
}
}
#ifndef TRI_HAVE_ANONYMOUS_MMAP
if (_isVolatile) {
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"volatile collections are not supported on this platform");
}
#endif
if (_isVolatile && _waitForSync) {
// the combination of waitForSync and isVolatile makes no sense
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"volatile collections do not support the waitForSync option");
}
if (_indexBuckets < 1 || _indexBuckets > 1024) {
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"indexBuckets must be a two-power between 1 and 1024");
}
if (!TRI_IsAllowedNameCollection(_isSystem, _name)) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_ARANGO_ILLEGAL_NAME);
}
// fix _isSystem value if mis-specified by user
_isSystem = (*_name == '_');
}
VocbaseCollectionInfo VocbaseCollectionInfo::fromFile(
char const* path, TRI_vocbase_t* vocbase, char const* collectionName,
bool versionWarning) {
// find parameter file
char* filename = TRI_Concatenate2File(path, TRI_VOC_PARAMETER_FILE);
if (filename == nullptr) {
LOG(ERR) << "cannot load parameter info for collection '" << path << "', out of memory";
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
}
if (!TRI_ExistsFile(filename)) {
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
THROW_ARANGO_EXCEPTION(TRI_ERROR_ARANGO_ILLEGAL_PARAMETER_FILE);
}
std::string filePath(filename, strlen(filename));
std::shared_ptr<VPackBuilder> content =
arangodb::basics::VelocyPackHelper::velocyPackFromFile(filePath);
VPackSlice slice = content->slice();
if (!slice.isObject()) {
LOG(ERR) << "cannot open '" << filename << "', collection parameters are not readable";
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
THROW_ARANGO_EXCEPTION(TRI_ERROR_ARANGO_ILLEGAL_PARAMETER_FILE);
}
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
// fiddle "isSystem" value, which is not contained in the JSON file
bool isSystemValue = false;
if (slice.hasKey("name")) {
auto name = slice.get("name").copyString();
if (!name.empty()) {
isSystemValue = name[0] == '_';
}
}
VPackBuilder bx;
bx.openObject();
bx.add("isSystem", VPackValue(isSystemValue));
bx.close();
VPackSlice isSystem = bx.slice();
VPackBuilder b2 = VPackCollection::merge(slice, isSystem, false);
slice = b2.slice();
VocbaseCollectionInfo info(vocbase, collectionName, slice);
// warn about wrong version of the collection
if (versionWarning && info.version() < TRI_COL_VERSION_20) {
if (info.name()[0] != '\0') {
// only warn if the collection version is older than expected, and if it's
// not a shape collection
LOG(WARN) << "collection '" << info.namec_str() << "' has an old version and needs to be upgraded.";
}
}
return info;
}
// collection version
TRI_col_version_t VocbaseCollectionInfo::version() const { return _version; }
// collection type
TRI_col_type_e VocbaseCollectionInfo::type() const { return _type; }
// local collection identifier
TRI_voc_cid_t VocbaseCollectionInfo::id() const { return _cid; }
// cluster-wide collection identifier
TRI_voc_cid_t VocbaseCollectionInfo::planId() const { return _planId; }
// last revision id written
TRI_voc_rid_t VocbaseCollectionInfo::revision() const { return _revision; }
// maximal size of memory mapped file
TRI_voc_size_t VocbaseCollectionInfo::maximalSize() const {
return _maximalSize;
}
// initial count, used when loading a collection
int64_t VocbaseCollectionInfo::initialCount() const { return _initialCount; }
// number of buckets used in hash tables for indexes
uint32_t VocbaseCollectionInfo::indexBuckets() const { return _indexBuckets; }
// name of the collection
std::string VocbaseCollectionInfo::name() const { return std::string(_name); }
// name of the collection as c string
char const* VocbaseCollectionInfo::namec_str() const { return _name; }
// options for key creation
std::shared_ptr<arangodb::velocypack::Buffer<uint8_t> const>
VocbaseCollectionInfo::keyOptions() const {
return _keyOptions;
}
// If true, collection has been deleted
bool VocbaseCollectionInfo::deleted() const { return _deleted; }
// If true, collection will be compacted
bool VocbaseCollectionInfo::doCompact() const { return _doCompact; }
// If true, collection is a system collection
bool VocbaseCollectionInfo::isSystem() const { return _isSystem; }
// If true, collection is memory-only
bool VocbaseCollectionInfo::isVolatile() const { return _isVolatile; }
// If true waits for mysnc
bool VocbaseCollectionInfo::waitForSync() const { return _waitForSync; }
void VocbaseCollectionInfo::setVersion(TRI_col_version_t version) {
_version = version;
}
void VocbaseCollectionInfo::rename(char const* name) {
TRI_CopyString(_name, name, sizeof(_name) - 1);
}
void VocbaseCollectionInfo::setRevision(TRI_voc_rid_t rid, bool force) {
if (force || rid > _revision) {
_revision = rid;
}
}
void VocbaseCollectionInfo::setCollectionId(TRI_voc_cid_t cid) { _cid = cid; }
void VocbaseCollectionInfo::updateCount(size_t size) { _initialCount = size; }
void VocbaseCollectionInfo::setPlanId(TRI_voc_cid_t planId) {
_planId = planId;
}
void VocbaseCollectionInfo::setDeleted(bool deleted) { _deleted = deleted; }
void VocbaseCollectionInfo::clearKeyOptions() { _keyOptions.reset(); }
int VocbaseCollectionInfo::saveToFile(char const* path, bool forceSync) const {
char* filename = TRI_Concatenate2File(path, TRI_VOC_PARAMETER_FILE);
TRI_json_t* json = TRI_CreateJsonCollectionInfo(*this);
if (json == nullptr) {
LOG(ERR) << "cannot save collection properties file '" << filename << "': " << TRI_errno_string(TRI_ERROR_OUT_OF_MEMORY);
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
return TRI_ERROR_OUT_OF_MEMORY;
}
// save json info to file
bool ok = TRI_SaveJson(filename, json, forceSync);
int res;
if (!ok) {
res = TRI_errno();
LOG(ERR) << "cannot save collection properties file '" << filename << "': " << TRI_last_error();
} else {
res = TRI_ERROR_NO_ERROR;
}
TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
TRI_FreeString(TRI_CORE_MEM_ZONE, filename);
return res;
}
void VocbaseCollectionInfo::update(VPackSlice const& slice, bool preferDefaults,
TRI_vocbase_t const* vocbase) {
// the following collection properties are intentionally not updated as
// updating
// them would be very complicated:
// - _cid
// - _name
// - _type
// - _isSystem
// - _isVolatile
// ... probably a few others missing here ...
if (preferDefaults) {
if (vocbase != nullptr) {
_doCompact = arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "doCompact", true);
_waitForSync = arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "waitForSync", vocbase->_settings.defaultWaitForSync);
if (slice.hasKey("journalSize")) {
_maximalSize = arangodb::basics::VelocyPackHelper::getNumericValue<int>(
slice, "journalSize", vocbase->_settings.defaultMaximalSize);
} else {
_maximalSize = arangodb::basics::VelocyPackHelper::getNumericValue<int>(
slice, "maximalSize", vocbase->_settings.defaultMaximalSize);
}
_indexBuckets =
arangodb::basics::VelocyPackHelper::getNumericValue<uint32_t>(
slice, "indexBuckets", TRI_DEFAULT_INDEX_BUCKETS);
} else {
_doCompact = arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "doCompact", true);
_waitForSync = arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "waitForSync", false);
if (slice.hasKey("journalSize")) {
_maximalSize =
arangodb::basics::VelocyPackHelper::getNumericValue<TRI_voc_size_t>(
slice, "journalSize", TRI_JOURNAL_DEFAULT_MAXIMAL_SIZE);
} else {
_maximalSize =
arangodb::basics::VelocyPackHelper::getNumericValue<TRI_voc_size_t>(
slice, "maximalSize", TRI_JOURNAL_DEFAULT_MAXIMAL_SIZE);
}
_indexBuckets =
arangodb::basics::VelocyPackHelper::getNumericValue<uint32_t>(
slice, "indexBuckets", TRI_DEFAULT_INDEX_BUCKETS);
}
} else {
_doCompact = arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "doCompact", _doCompact);
_waitForSync = arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "waitForSync", _waitForSync);
if (slice.hasKey("journalSize")) {
_maximalSize =
arangodb::basics::VelocyPackHelper::getNumericValue<TRI_voc_size_t>(
slice, "journalSize", _maximalSize);
} else {
_maximalSize =
arangodb::basics::VelocyPackHelper::getNumericValue<TRI_voc_size_t>(
slice, "maximalSize", _maximalSize);
}
_indexBuckets =
arangodb::basics::VelocyPackHelper::getNumericValue<uint32_t>(
slice, "indexBuckets", _indexBuckets);
}
}
void VocbaseCollectionInfo::update(VocbaseCollectionInfo const& other) {
_version = other.version();
_type = other.type();
_cid = other.id();
_planId = other.planId();
_revision = other.revision();
_maximalSize = other.maximalSize();
_initialCount = other.initialCount();
_indexBuckets = other.indexBuckets();
TRI_CopyString(_name, other.namec_str(), sizeof(_name) - 1);
_keyOptions = other.keyOptions();
_deleted = other.deleted();
_doCompact = other.doCompact();
_isSystem = other.isSystem();
_isVolatile = other.isVolatile();
_waitForSync = other.waitForSync();
}
////////////////////////////////////////////////////////////////////////////////
/// @brief jsonify a parameter info block
////////////////////////////////////////////////////////////////////////////////
// Only temporary
TRI_json_t* TRI_CreateJsonCollectionInfo(
arangodb::VocbaseCollectionInfo const& info) {
try {
VPackBuilder builder;
builder.openObject();
TRI_CreateVelocyPackCollectionInfo(info, builder);
builder.close();
return arangodb::basics::VelocyPackHelper::velocyPackToJson(
builder.slice());
} catch (...) {
return nullptr;
}
}
std::shared_ptr<VPackBuilder> TRI_CreateVelocyPackCollectionInfo(
arangodb::VocbaseCollectionInfo const& info) {
// This function might throw
auto builder = std::make_shared<VPackBuilder>();
builder->openObject();
TRI_CreateVelocyPackCollectionInfo(info, *builder);
builder->close();
return builder;
}
void TRI_CreateVelocyPackCollectionInfo(
arangodb::VocbaseCollectionInfo const& info, VPackBuilder& builder) {
// This function might throw
//
TRI_ASSERT(!builder.isClosed());
std::string cidString = std::to_string(info.id());
std::string planIdString = std::to_string(info.planId());
builder.add("version", VPackValue(info.version()));
builder.add("type", VPackValue(info.type()));
builder.add("cid", VPackValue(cidString));
if (info.planId() > 0) {
builder.add("planId", VPackValue(planIdString));
}
if (info.initialCount() >= 0) {
builder.add("count", VPackValue(info.initialCount()));
}
builder.add("indexBuckets", VPackValue(info.indexBuckets()));
builder.add("deleted", VPackValue(info.deleted()));
builder.add("doCompact", VPackValue(info.doCompact()));
builder.add("maximalSize", VPackValue(info.maximalSize()));
builder.add("name", VPackValue(info.name()));
builder.add("isVolatile", VPackValue(info.isVolatile()));
builder.add("waitForSync", VPackValue(info.waitForSync()));
auto opts = info.keyOptions();
if (opts.get() != nullptr) {
VPackSlice const slice(opts->data());
builder.add("keyOptions", slice);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief updates the parameter info block
///
/// You must hold the @ref TRI_WRITE_LOCK_STATUS_VOCBASE_COL when calling this
/// function.
/// Note: the parameter pointer might be 0 when a collection gets unloaded!!!!
////////////////////////////////////////////////////////////////////////////////
int TRI_UpdateCollectionInfo(TRI_vocbase_t* vocbase,
TRI_collection_t* collection,
VPackSlice const& slice, bool doSync) {
if (!slice.isNone()) {
TRI_LOCK_JOURNAL_ENTRIES_DOC_COLLECTION(
(TRI_document_collection_t*)collection);
try {
collection->_info.update(slice, false, vocbase);
} catch (...) {
TRI_UNLOCK_JOURNAL_ENTRIES_DOC_COLLECTION(
(TRI_document_collection_t*)collection);
return TRI_ERROR_INTERNAL;
}
TRI_UNLOCK_JOURNAL_ENTRIES_DOC_COLLECTION(
(TRI_document_collection_t*)collection);
}
return collection->_info.saveToFile(collection->_directory, doSync);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief renames a collection
///
/// You must hold the @ref TRI_WRITE_LOCK_STATUS_VOCBASE_COL when calling this
/// function.
////////////////////////////////////////////////////////////////////////////////
int TRI_RenameCollection(TRI_collection_t* collection, char const* name) {
// Save name for rollback
std::string oldName = collection->_info.name();
collection->_info.rename(name);
int res = collection->_info.saveToFile(collection->_directory, true);
if (res != TRI_ERROR_NO_ERROR) {
// Rollback
collection->_info.rename(oldName.c_str());
}
return res;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief iterates over a collection
////////////////////////////////////////////////////////////////////////////////
bool TRI_IterateCollection(TRI_collection_t* collection,
bool (*iterator)(TRI_df_marker_t const*, void*,
TRI_datafile_t*),
void* data) {
TRI_ASSERT(iterator != nullptr);
TRI_vector_pointer_t* datafiles =
TRI_CopyVectorPointer(TRI_UNKNOWN_MEM_ZONE, &collection->_datafiles);
if (datafiles == nullptr) {
TRI_set_errno(TRI_ERROR_OUT_OF_MEMORY);
return false;
}
TRI_vector_pointer_t* journals =
TRI_CopyVectorPointer(TRI_UNKNOWN_MEM_ZONE, &collection->_journals);
if (journals == nullptr) {
TRI_FreeVectorPointer(TRI_UNKNOWN_MEM_ZONE, datafiles);
TRI_set_errno(TRI_ERROR_OUT_OF_MEMORY);
return false;
}
TRI_vector_pointer_t* compactors =
TRI_CopyVectorPointer(TRI_UNKNOWN_MEM_ZONE, &collection->_compactors);
if (compactors == nullptr) {
TRI_FreeVectorPointer(TRI_UNKNOWN_MEM_ZONE, datafiles);
TRI_FreeVectorPointer(TRI_UNKNOWN_MEM_ZONE, journals);
TRI_set_errno(TRI_ERROR_OUT_OF_MEMORY);
return false;
}
bool result;
if (!IterateDatafilesVector(datafiles, iterator, data) ||
!IterateDatafilesVector(compactors, iterator, data) ||
!IterateDatafilesVector(journals, iterator, data)) {
result = false;
} else {
result = true;
}
TRI_FreeVectorPointer(TRI_UNKNOWN_MEM_ZONE, datafiles);
TRI_FreeVectorPointer(TRI_UNKNOWN_MEM_ZONE, journals);
TRI_FreeVectorPointer(TRI_UNKNOWN_MEM_ZONE, compactors);
return result;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief removes an index file from the indexFiles vector
////////////////////////////////////////////////////////////////////////////////
int TRI_RemoveFileIndexCollection(TRI_collection_t* collection,
TRI_idx_iid_t iid) {
size_t const n = collection->_indexFiles._length;
for (size_t i = 0; i < n; ++i) {
char const* filename = collection->_indexFiles._buffer[i];
if (GetNumericFilenamePart(filename) == iid) {
// found
TRI_RemoveVectorString(&collection->_indexFiles, i);
return true;
}
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief iterates over all index files of a collection
////////////////////////////////////////////////////////////////////////////////
void TRI_IterateIndexCollection(TRI_collection_t* collection,
bool (*iterator)(char const* filename, void*),
void* data) {
// iterate over all index files
size_t const n = collection->_indexFiles._length;
for (size_t i = 0; i < n; ++i) {
char const* filename = collection->_indexFiles._buffer[i];
bool ok = iterator(filename, data);
if (!ok) {
LOG(ERR) << "cannot load index '" << filename << "' for collection '" << collection->_info.namec_str() << "'";
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief opens an existing collection
////////////////////////////////////////////////////////////////////////////////
TRI_collection_t* TRI_OpenCollection(TRI_vocbase_t* vocbase,
TRI_collection_t* collection,
char const* path, bool ignoreErrors) {
TRI_ASSERT(collection != nullptr);
if (!TRI_IsDirectory(path)) {
TRI_set_errno(TRI_ERROR_ARANGO_DATADIR_INVALID);
LOG(ERR) << "cannot open '" << path << "', not a directory or not found";
return nullptr;
}
try {
// read parameters, no need to lock as we are opening the collection
VocbaseCollectionInfo info =
VocbaseCollectionInfo::fromFile(path, vocbase,
"", // Name will be set later on
true);
InitCollection(vocbase, collection, std::string(path), info);
double start = TRI_microtime();
LOG_TOPIC(TRACE, Logger::PERFORMANCE) <<
"open-collection { collection: " << vocbase->_name << "/" << collection->_info.name();
// check for journals and datafiles
bool ok = CheckCollection(collection, ignoreErrors);
if (!ok) {
LOG(DEBUG) << "cannot open '" << collection->_directory << "', check failed";
if (collection->_directory != nullptr) {
TRI_FreeString(TRI_CORE_MEM_ZONE, collection->_directory);
collection->_directory = nullptr;
}
return nullptr;
}
LOG_TOPIC(TRACE, Logger::PERFORMANCE) << "[timer] " << Logger::DURATION(TRI_microtime() - start) << " s, open-collection { collection: " << vocbase->_name << "/" << collection->_info.name() << " }";
return collection;
} catch (...) {
LOG(ERR) << "cannot load collection parameter file '" << path << "': " << TRI_last_error();
return nullptr;
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief closes an open collection
////////////////////////////////////////////////////////////////////////////////
int TRI_CloseCollection(TRI_collection_t* collection) {
// close compactor files
CloseDataFiles(&collection->_compactors);
// close journal files
CloseDataFiles(&collection->_journals);
// close datafiles
CloseDataFiles(&collection->_datafiles);
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief returns information about the collection files
////////////////////////////////////////////////////////////////////////////////
TRI_col_file_structure_t TRI_FileStructureCollectionDirectory(
char const* path) {
return ScanCollectionDirectory(path);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief frees the information
////////////////////////////////////////////////////////////////////////////////
void TRI_DestroyFileStructureCollection(TRI_col_file_structure_t* info) {
TRI_DestroyVectorString(&info->_journals);
TRI_DestroyVectorString(&info->_compactors);
TRI_DestroyVectorString(&info->_datafiles);
TRI_DestroyVectorString(&info->_indexes);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief iterate over the markers in a collection's datafiles
///
/// this function may be called on server startup for all collections, in order
/// to get the last tick value used
////////////////////////////////////////////////////////////////////////////////
bool TRI_IterateTicksCollection(char const* const path,
bool (*iterator)(TRI_df_marker_t const*, void*,
TRI_datafile_t*),
void* data) {
TRI_ASSERT(iterator != nullptr);
TRI_col_file_structure_t structure = ScanCollectionDirectory(path);
LOG(TRACE) << "iterating ticks of journal '" << path << "'";
bool result;
if (structure._journals._length == 0) {
// no journal found for collection. should not happen normally, but if
// it does, we need to grab the ticks from the datafiles, too
result = IterateFiles(&structure._datafiles, iterator, data);
} else {
// compactor files don't need to be iterated... they just contain data
// copied
// from other files, so their tick values will never be any higher
result = IterateFiles(&structure._journals, iterator, data);
}
TRI_DestroyFileStructureCollection(&structure);
return result;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief determine whether a collection name is a system collection name
////////////////////////////////////////////////////////////////////////////////
bool TRI_IsSystemNameCollection(char const* name) {
if (name == nullptr) {
return false;
}
return *name == '_';
}
////////////////////////////////////////////////////////////////////////////////
/// @brief checks if a collection name is allowed
///
/// Returns true if the name is allowed and false otherwise
////////////////////////////////////////////////////////////////////////////////
bool TRI_IsAllowedNameCollection(bool allowSystem, char const* name) {
bool ok;
char const* ptr;
size_t length = 0;
// check allow characters: must start with letter or underscore if system is
// allowed
for (ptr = name; *ptr; ++ptr) {
if (length == 0) {
if (allowSystem) {
ok = (*ptr == '_') || ('a' <= *ptr && *ptr <= 'z') ||
('A' <= *ptr && *ptr <= 'Z');
} else {
ok = ('a' <= *ptr && *ptr <= 'z') || ('A' <= *ptr && *ptr <= 'Z');
}
} else {
ok = (*ptr == '_') || (*ptr == '-') || ('0' <= *ptr && *ptr <= '9') ||
('a' <= *ptr && *ptr <= 'z') || ('A' <= *ptr && *ptr <= 'Z');
}
if (!ok) {
return false;
}
++length;
}
// invalid name length
if (length == 0 || length > TRI_COL_NAME_LENGTH) {
return false;
}
return true;
}
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