TestTTL.CompactionTTL passed

db/db_impl.cc

@@ -594,6 +594,8 @@ void DBImpl::CompactRange(const Slice* begin, const Slice* end) {
   for (int level = 0; level < max_level_with_files; level++) {
     TEST_CompactRange(level, begin, end);
   }
+  /// For TTL
+  TEST_CompactRange(max_level_with_files, begin, end);
 }
 
 void DBImpl::TEST_CompactRange(int level, const Slice* begin,
@@ -735,21 +737,21 @@ void DBImpl::BackgroundCompaction() {
   if (c == nullptr) {
     // Nothing to do
   } else if (!is_manual && c->IsTrivialMove()) {
-    // Move file to next level
-    assert(c->num_input_files(0) == 1);
-    FileMetaData* f = c->input(0, 0);
-    c->edit()->RemoveFile(c->level(), f->number);
-    c->edit()->AddFile(c->level() + 1, f->number, f->file_size, f->smallest,
-                       f->largest);
-    status = versions_->LogAndApply(c->edit(), &mutex_);
-    if (!status.ok()) {
-      RecordBackgroundError(status);
-    }
-    VersionSet::LevelSummaryStorage tmp;
-    Log(options_.info_log, "Moved #%lld to level-%d %lld bytes %s: %s\n",
-        static_cast<unsigned long long>(f->number), c->level() + 1,
-        static_cast<unsigned long long>(f->file_size),
-        status.ToString().c_str(), versions_->LevelSummary(&tmp));
+//    // Move file to next level
+//    assert(c->num_input_files(0) == 1);
+//    FileMetaData* f = c->input(0, 0);
+//    c->edit()->RemoveFile(c->level(), f->number);
+//    c->edit()->AddFile(c->level() + 1, f->number, f->file_size, f->smallest,
+//                       f->largest);
+//    status = versions_->LogAndApply(c->edit(), &mutex_);
+//    if (!status.ok()) {
+//      RecordBackgroundError(status);
+//    }
+//    VersionSet::LevelSummaryStorage tmp;
+//    Log(options_.info_log, "Moved #%lld to level-%d %lld bytes %s: %s\n",
+//        static_cast<unsigned long long>(f->number), c->level() + 1,
+//        static_cast<unsigned long long>(f->file_size),
+//        status.ToString().c_str(), versions_->LevelSummary(&tmp));
   } else {
     CompactionState* compact = new CompactionState(c);
     status = DoCompactionWork(compact);
@@ -979,6 +981,21 @@ Status DBImpl::DoCompactionWork(CompactionState* compact) {
         drop = true;
       }
 
+      /// For TTL
+      Slice value_ddl = input->value();
+      std::string value = value_ddl.ToString();
+      size_t pos = value.find_last_of('_');
+      if (pos != std::string::npos) {
+        std::string substring = value.substr(pos + 1);
+        auto ddl = static_cast<uint64_t>(std::stoll(substring));
+        auto now = std::chrono::system_clock::now();
+        auto timestamp = std::chrono::duration_cast<std::chrono::microseconds>(now.time_since_epoch()).count();
+        auto microsecondsTimestamp = static_cast<uint64_t>(timestamp);
+        if (ddl <= microsecondsTimestamp) {
+          drop = true;
+        }
+      }
+
       last_sequence_for_key = ikey.sequence;
     }
 #if 0

test/ttl_test.cc

@@ -81,7 +81,7 @@ TEST(TestTTL, ReadTTL) {
 TEST(TestTTL, CompactionTTL) {
     DB *db;
 
-    if(OpenDB("testdb", &db).ok() == false) {
+    if(OpenDB("testdb_", &db).ok() == false) {
         std::cerr << "open db failed" << std::endl;
         abort();
     }