X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=localdb.cc;h=27fec5a8b9b38ffc8c51d5d93451230d9cc28909;hb=da87780779a2f165503d019ee0b59d10e5d31ec8;hp=63a9f8349531e0fb13531b8ba7931dc4300c112d;hpb=ed5a047c1b8a8f5c43b0192e8e774b91497c9706;p=cumulus.git

diff --git a/localdb.cc b/localdb.cc
index 63a9f83..27fec5a 100644
--- a/localdb.cc
+++ b/localdb.cc
@@ -22,10 +22,12 @@
 
 using std::string;
 
-void LocalDb::Open(const char *path)
+void LocalDb::Open(const char *path, const char *snapshot_name)
 {
     int rc;
 
+    snapshot = snapshot_name;
+
     rc = sqlite3_open(path, &db);
     if (rc) {
         fprintf(stderr, "Can't open database: %s\n", sqlite3_errmsg(db));
@@ -81,3 +83,67 @@ void LocalDb::StoreObject(const ObjectReference& ref,
 
     sqlite3_finalize(stmt);
 }
+
+ObjectReference LocalDb::FindObject(const string &checksum, int64_t size)
+{
+    int rc;
+    sqlite3_stmt *stmt;
+    static const char s[] =
+        "select segment, object from block_index "
+        "where checksum = ? and size = ?";
+    const char *tail;
+
+    ObjectReference ref;
+
+    rc = sqlite3_prepare_v2(db, s, strlen(s), &stmt, &tail);
+    if (rc != SQLITE_OK) {
+        return ref;
+    }
+
+    sqlite3_bind_text(stmt, 1, checksum.c_str(), checksum.size(),
+                      SQLITE_TRANSIENT);
+    sqlite3_bind_int64(stmt, 2, size);
+
+    rc = sqlite3_step(stmt);
+    if (rc == SQLITE_DONE) {
+    } else if (rc == SQLITE_ROW) {
+        ref = ObjectReference((const char *)sqlite3_column_text(stmt, 0),
+                              (const char *)sqlite3_column_text(stmt, 1));
+    } else {
+        fprintf(stderr, "Could not execute SELECT statement!\n");
+    }
+
+    sqlite3_finalize(stmt);
+
+    return ref;
+}
+
+void LocalDb::UseObject(const ObjectReference& ref)
+{
+    int rc;
+    sqlite3_stmt *stmt;
+    static const char s[] =
+        "insert into snapshot_contents "
+        "select blockid, ? as snapshot from block_index "
+        "where segment = ? and object = ?";
+    const char *tail;
+
+    rc = sqlite3_prepare_v2(db, s, strlen(s), &stmt, &tail);
+    if (rc != SQLITE_OK) {
+        return;
+    }
+
+    sqlite3_bind_text(stmt, 1, snapshot.c_str(), snapshot.size(),
+                      SQLITE_TRANSIENT);
+    string seg = ref.get_segment();
+    sqlite3_bind_text(stmt, 2, seg.c_str(), seg.size(), SQLITE_TRANSIENT);
+    string obj = ref.get_sequence();
+    sqlite3_bind_text(stmt, 3, obj.c_str(), obj.size(), SQLITE_TRANSIENT);
+
+    rc = sqlite3_step(stmt);
+    if (rc != SQLITE_DONE) {
+        fprintf(stderr, "Could not execute INSERT statement!\n");
+    }
+
+    sqlite3_finalize(stmt);
+}