#include <set>
#include "format.h"
+#include "localdb.h"
#include "store.h"
#include "sha1.h"
static const size_t LBS_METADATA_BLOCK_SIZE = 65536;
+/* Local database, which tracks objects written in this and previous
+ * invocations to help in creating incremental snapshots. */
+LocalDb *db;
+
/* Contents of the root object. This will contain a set of indirect links to
* the metadata objects. */
std::ostringstream metadata_root;
hash.process(block_buf, bytes);
- // tarstore processing
- LbsObject *o = new LbsObject;
- o->set_group("data");
- o->set_data(block_buf, bytes);
- o->write(tss);
- object_list.push_back(o->get_name());
- segment_list.insert(o->get_ref().get_segment());
- delete o;
+ // Either find a copy of this block in an already-existing segment, or
+ // index it so it can be re-used in the future
+ SHA1Checksum block_hash;
+ block_hash.process(block_buf, bytes);
+ string block_csum = block_hash.checksum_str();
+ ObjectReference ref = db->FindObject(block_csum, bytes);
+
+ // Store a copy of the object if one does not yet exist
+ if (ref.get_segment().size() == 0) {
+ LbsObject *o = new LbsObject;
+ o->set_group("data");
+ o->set_data(block_buf, bytes);
+ o->write(tss);
+ ref = o->get_ref();
+ db->StoreObject(ref, block_csum, bytes);
+ delete o;
+ }
+ object_list.push_back(ref.to_string());
+ segment_list.insert(ref.get_segment());
+ db->UseObject(ref);
size += bytes;
}
string desc_filename = backup_dest + "/" + desc_buf + ".lbs";
std::ofstream descriptor(desc_filename.c_str());
+ /* Open the local database which tracks all objects that are stored
+ * remotely, for efficient incrementals. Provide it with the name of this
+ * snapshot. */
+ string database_path = backup_dest + "/localdb.sqlite";
+ db = new LocalDb;
+ db->Open(database_path.c_str(), desc_buf);
+
try {
scanfile(".");
} catch (IOException e) {
descriptor << " " << *i << "\n";
}
+ db->Close();
+
tss->sync();
delete tss;