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-rw-r--r--lib/backupstore/StoreStructure.cpp95
1 files changed, 95 insertions, 0 deletions
diff --git a/lib/backupstore/StoreStructure.cpp b/lib/backupstore/StoreStructure.cpp
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+// --------------------------------------------------------------------------
+//
+// 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;
+}
+
+