diff options
Diffstat (limited to 'lib/backupstore/StoreStructure.cpp')
-rw-r--r-- | lib/backupstore/StoreStructure.cpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/lib/backupstore/StoreStructure.cpp b/lib/backupstore/StoreStructure.cpp new file mode 100644 index 00000000..45a1ce91 --- /dev/null +++ b/lib/backupstore/StoreStructure.cpp @@ -0,0 +1,95 @@ +// -------------------------------------------------------------------------- +// +// File +// Name: StoreStructure.cpp +// Purpose: +// Created: 11/12/03 +// +// -------------------------------------------------------------------------- + +#include "Box.h" + +#include "StoreStructure.h" +#include "RaidFileRead.h" +#include "RaidFileWrite.h" +#include "RaidFileController.h" + +#include "MemLeakFindOn.h" + + +// -------------------------------------------------------------------------- +// +// Function +// Name: StoreStructure::MakeObjectFilename(int64_t, const std::string &, int, std::string &, bool) +// Purpose: Builds the object filename for a given object, given a root. Optionally ensure that the +// directory exists. +// Created: 11/12/03 +// +// -------------------------------------------------------------------------- +void StoreStructure::MakeObjectFilename(int64_t ObjectID, const std::string &rStoreRoot, int DiscSet, std::string &rFilenameOut, bool EnsureDirectoryExists) +{ + const static char *hex = "0123456789abcdef"; + + // Set output to root string + rFilenameOut = rStoreRoot; + + // get the id value from the stored object ID so we can do + // bitwise operations on it. + uint64_t id = (uint64_t)ObjectID; + + // get leafname, shift the bits which make up the leafname off + unsigned int leafname(id & STORE_ID_SEGMENT_MASK); + id >>= STORE_ID_SEGMENT_LENGTH; + + // build pathname + while(id != 0) + { + // assumes that the segments are no bigger than 8 bits + int v = id & STORE_ID_SEGMENT_MASK; + rFilenameOut += hex[(v & 0xf0) >> 4]; + rFilenameOut += hex[v & 0xf]; + rFilenameOut += DIRECTORY_SEPARATOR_ASCHAR; + + // shift the bits we used off the pathname + id >>= STORE_ID_SEGMENT_LENGTH; + } + + // Want to make sure this exists? + if(EnsureDirectoryExists) + { + if(!RaidFileRead::DirectoryExists(DiscSet, rFilenameOut)) + { + // Create it + RaidFileWrite::CreateDirectory(DiscSet, rFilenameOut, true /* recusive */); + } + } + + // append the filename + rFilenameOut += 'o'; + rFilenameOut += hex[(leafname & 0xf0) >> 4]; + rFilenameOut += hex[leafname & 0xf]; +} + + +// -------------------------------------------------------------------------- +// +// Function +// Name: StoreStructure::MakeWriteLockFilename(const std::string &, int, std::string &) +// Purpose: Generate the on disc filename of the write lock file +// Created: 15/12/03 +// +// -------------------------------------------------------------------------- +void StoreStructure::MakeWriteLockFilename(const std::string &rStoreRoot, int DiscSet, std::string &rFilenameOut) +{ + // Find the disc set + RaidFileController &rcontroller(RaidFileController::GetController()); + RaidFileDiscSet &rdiscSet(rcontroller.GetDiscSet(DiscSet)); + + // Make the filename + std::string writeLockFile(rdiscSet[0] + DIRECTORY_SEPARATOR + rStoreRoot + "write.lock"); + + // Return it to the caller + rFilenameOut = writeLockFile; +} + + |