1 files changed, 94 insertions, 0 deletions
diff --git a/src/trace_processor/importers/proto/metadata_tracker.cc b/src/trace_processor/importers/proto/metadata_tracker.cc
new file mode 100644
index 000000000..757ac1a42
--- /dev/null
+++ b/src/trace_processor/importers/proto/metadata_tracker.cc
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "src/trace_processor/importers/proto/metadata_tracker.h"
+
+#include "src/trace_processor/importers/common/process_tracker.h"
+#include "src/trace_processor/types/trace_processor_context.h"
+
+namespace perfetto {
+namespace trace_processor {
+
+MetadataTracker::MetadataTracker(TraceProcessorContext* context)
+    : context_(context) {
+  for (uint32_t i = 0; i < kNumKeys; ++i) {
+    key_ids_[i] = context->storage->InternString(metadata::kNames[i]);
+  }
+  for (uint32_t i = 0; i < kNumKeyTypes; ++i) {
+    key_type_ids_[i] =
+        context->storage->InternString(metadata::kKeyTypeNames[i]);
+  }
+}
+
+MetadataId MetadataTracker::SetMetadata(metadata::KeyIDs key, Variadic value) {
+  PERFETTO_DCHECK(metadata::kKeyTypes[key] == metadata::KeyType::kSingle);
+  PERFETTO_DCHECK(value.type == metadata::kValueTypes[key]);
+
+  auto* metadata_table = context_->storage->mutable_metadata_table();
+  uint32_t key_idx = static_cast<uint32_t>(key);
+  base::Optional<uint32_t> opt_row =
+      metadata_table->name().IndexOf(metadata::kNames[key_idx]);
+  if (opt_row) {
+    WriteValue(*opt_row, value);
+    return metadata_table->id()[*opt_row];
+  }
+
+  tables::MetadataTable::Row row;
+  row.name = key_ids_[key_idx];
+  row.key_type = key_type_ids_[static_cast<size_t>(metadata::KeyType::kSingle)];
+
+  auto id_and_row = metadata_table->Insert(row);
+  WriteValue(id_and_row.row, value);
+  return id_and_row.id;
+}
+
+MetadataId MetadataTracker::AppendMetadata(metadata::KeyIDs key,
+                                           Variadic value) {
+  PERFETTO_DCHECK(key < metadata::kNumKeys);
+  PERFETTO_DCHECK(metadata::kKeyTypes[key] == metadata::KeyType::kMulti);
+  PERFETTO_DCHECK(value.type == metadata::kValueTypes[key]);
+
+  uint32_t key_idx = static_cast<uint32_t>(key);
+  tables::MetadataTable::Row row;
+  row.name = key_ids_[key_idx];
+  row.key_type = key_type_ids_[static_cast<size_t>(metadata::KeyType::kMulti)];
+
+  auto* metadata_table = context_->storage->mutable_metadata_table();
+  auto id_and_row = metadata_table->Insert(row);
+  WriteValue(id_and_row.row, value);
+  return id_and_row.id;
+}
+
+void MetadataTracker::WriteValue(uint32_t row, Variadic value) {
+  auto* metadata_table = context_->storage->mutable_metadata_table();
+  switch (value.type) {
+    case Variadic::Type::kInt:
+      metadata_table->mutable_int_value()->Set(row, value.int_value);
+      break;
+    case Variadic::Type::kString:
+      metadata_table->mutable_str_value()->Set(row, value.string_value);
+      break;
+    case Variadic::Type::kJson:
+    case Variadic::Type::kBool:
+    case Variadic::Type::kPointer:
+    case Variadic::Type::kUint:
+    case Variadic::Type::kReal:
+      PERFETTO_FATAL("Unsupported value type");
+  }
+}
+
+}  // namespace trace_processor
+}  // namespace perfetto