X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=localdb.cc;h=8a5e1f1382b5c8c0e44eb10a3ca11a53e284f561;hb=893aa36d4dee18cc85843c441219c8e177282e79;hp=13888811cc36adedaf27aca2b768e759e3516602;hpb=248b2455853ed082bf3b032fea4cb6b557a145ae;p=cumulus.git

diff --git a/localdb.cc b/localdb.cc
index 1388881..8a5e1f1 100644
--- a/localdb.cc
+++ b/localdb.cc
@@ -30,7 +30,7 @@ sqlite3_stmt *LocalDb::Prepare(const char *sql)
     int rc;
     const char *tail;
 
-    rc = sqlite3_prepare(db, sql, strlen(sql), &stmt, &tail);
+    rc = sqlite3_prepare_v2(db, sql, strlen(sql), &stmt, &tail);
     if (rc != SQLITE_OK) {
         throw IOException(string("Error preparing statement: ") + sql);
     }
@@ -38,7 +38,14 @@ sqlite3_stmt *LocalDb::Prepare(const char *sql)
     return stmt;
 }
 
-void LocalDb::Open(const char *path, const char *snapshot_name)
+void LocalDb::ReportError(int rc)
+{
+    fprintf(stderr, "Result code: %d\n", rc);
+    fprintf(stderr, "Error message: %s\n", sqlite3_errmsg(db));
+}
+
+void LocalDb::Open(const char *path, const char *snapshot_name,
+                   const char *snapshot_scheme)
 {
     int rc;
 
@@ -56,15 +63,24 @@ void LocalDb::Open(const char *path, const char *snapshot_name)
         throw IOException("Error starting transaction");
     }
 
+    sqlite3_extended_result_codes(db, 1);
+
     /* Insert this snapshot into the database, and determine the integer key
      * which will be used to identify it. */
-    sqlite3_stmt *stmt = Prepare("insert into snapshots(name, timestamp) "
-                                 "values (?, julianday('now'))");
+    sqlite3_stmt *stmt = Prepare("insert into "
+                                 "snapshots(name, scheme, timestamp) "
+                                 "values (?, ?, julianday('now'))");
     sqlite3_bind_text(stmt, 1, snapshot_name, strlen(snapshot_name),
                       SQLITE_TRANSIENT);
+    if (snapshot_scheme == NULL)
+        sqlite3_bind_null(stmt, 2);
+    else
+        sqlite3_bind_text(stmt, 2, snapshot_scheme, strlen(snapshot_scheme),
+                          SQLITE_TRANSIENT);
 
     rc = sqlite3_step(stmt);
     if (rc != SQLITE_DONE) {
+        ReportError(rc);
         sqlite3_close(db);
         throw IOException("Database execution error!");
     }
@@ -72,6 +88,7 @@ void LocalDb::Open(const char *path, const char *snapshot_name)
     snapshotid = sqlite3_last_insert_rowid(db);
     sqlite3_finalize(stmt);
     if (snapshotid == 0) {
+        ReportError(rc);
         sqlite3_close(db);
         throw IOException("Find snapshot id");
     }
@@ -82,7 +99,8 @@ void LocalDb::Close()
     int rc;
     rc = sqlite3_exec(db, "commit", NULL, NULL, NULL);
     if (rc != SQLITE_OK) {
-        fprintf(stderr, "Can't commit database!\n");
+        fprintf(stderr, "DATABASE ERROR: Can't commit database!\n");
+        ReportError(rc);
     }
     sqlite3_close(db);
 }
@@ -172,6 +190,7 @@ void LocalDb::StoreObject(const ObjectReference& ref,
     rc = sqlite3_step(stmt);
     if (rc != SQLITE_DONE) {
         fprintf(stderr, "Could not execute INSERT statement!\n");
+        ReportError(rc);
     }
 
     sqlite3_finalize(stmt);
@@ -196,6 +215,7 @@ ObjectReference LocalDb::FindObject(const string &checksum, int64_t size)
                               (const char *)sqlite3_column_text(stmt, 1));
     } else {
         fprintf(stderr, "Could not execute SELECT statement!\n");
+        ReportError(rc);
     }
 
     sqlite3_finalize(stmt);
@@ -223,6 +243,36 @@ bool LocalDb::IsOldObject(const string &checksum, int64_t size, double *age)
         *age = sqlite3_column_double(stmt, 2);
     } else {
         fprintf(stderr, "Could not execute SELECT statement!\n");
+        ReportError(rc);
+    }
+
+    sqlite3_finalize(stmt);
+
+    return found;
+}
+
+/* Does this object still exist in the database (and not expired)? */
+bool LocalDb::IsAvailable(const ObjectReference &ref)
+{
+    int rc;
+    sqlite3_stmt *stmt;
+    bool found = false;
+
+    stmt = Prepare("select count(*) from block_index "
+                   "where segmentid = ? and object = ? and expired is null");
+    sqlite3_bind_int64(stmt, 1, SegmentToId(ref.get_segment()));
+    sqlite3_bind_text(stmt, 2, ref.get_sequence().c_str(),
+                      ref.get_sequence().size(), SQLITE_TRANSIENT);
+
+    rc = sqlite3_step(stmt);
+    if (rc == SQLITE_DONE) {
+        found = false;
+    } else if (rc == SQLITE_ROW) {
+        if (sqlite3_column_int(stmt, 0) > 0)
+            found = true;
+    } else {
+        fprintf(stderr, "Could not execute SELECT statement!\n");
+        ReportError(rc);
     }
 
     sqlite3_finalize(stmt);
@@ -246,6 +296,31 @@ void LocalDb::UseObject(const ObjectReference& ref)
     rc = sqlite3_step(stmt);
     if (rc != SQLITE_DONE) {
         fprintf(stderr, "Could not execute INSERT statement!\n");
+        ReportError(rc);
+    }
+
+    sqlite3_finalize(stmt);
+}
+
+void LocalDb::SetSegmentChecksum(const std::string &segment,
+                                 const std::string &path,
+                                 const std::string &checksum)
+{
+    int rc;
+    sqlite3_stmt *stmt;
+
+    stmt = Prepare("update segments set path = ?, checksum = ? "
+                   "where segmentid = ?");
+    sqlite3_bind_text(stmt, 1, path.c_str(), path.size(),
+                      SQLITE_TRANSIENT);
+    sqlite3_bind_text(stmt, 2, checksum.c_str(), checksum.size(),
+                      SQLITE_TRANSIENT);
+    sqlite3_bind_int64(stmt, 3, SegmentToId(segment));
+
+    rc = sqlite3_step(stmt);
+    if (rc != SQLITE_DONE) {
+        fprintf(stderr, "Could not update segment checksum in database!\n");
+        ReportError(rc);
     }
 
     sqlite3_finalize(stmt);