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// Copyright 2018 Google LLC
//
// 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.
#ifndef CC_TF_UTILS_H_
#define CC_TF_UTILS_H_
#include <string>
#include <vector>
#include "cc/game.h"
#include "cc/model/features.h"
namespace minigo {
namespace tf_utils {
// Writes a list of tensorflow Example protos to a zlib compressed TFRecord
// file, one for each position in the player's move history.
// Each example contains:
// x: the input BoardFeatures as bytes.
// pi: the search pi as a float array, serialized as bytes.
// outcome: a single float containing the game result +/-1.
// CHECK fails if the binary was not compiled with --define=tf=1.
void WriteGameExamples(const std::string& output_dir,
const std::string& output_name,
const FeatureDescriptor& feature_desc, const Game& game);
// Writes a list of tensorflow Example protos to the specified
// Bigtable, one example per row, starting at the given row cursor.
void WriteGameExamples(const std::string& gcp_project_name,
const std::string& instance_name,
const std::string& table_name,
const FeatureDescriptor& feature_desc, const Game& game);
// Writes information about an eval game to the specified Bigtable.
void WriteEvalRecord(const std::string& gcp_project_name,
const std::string& instance_name,
const std::string& table_name, const Game& game,
const std::string& sgf_name, const std::string& tag);
// Atomically increment the game counter in the given Bigtable by the given
// delta. Returns the new value. Prior value will be returned - delta.
uint64_t IncrementGameCounter(const std::string& gcp_project_name,
const std::string& instance_name,
const std::string& table_name,
const std::string& counter_name, size_t delta);
// Port Minigo games from the given GCS files, which must be in
// `.tfrecord.zz` format. If game_counter is >=0, use that
// and increment from there. Otherwise, atomically increment
// and use the value from `table_state=metadata:game_counter`.
void PortGamesToBigtable(const std::string& gcp_project_name,
const std::string& instance_name,
const std::string& table_name,
const std::vector<std::string>& paths,
int64_t game_counter = -1);
} // namespace tf_utils
} // namespace minigo
#endif // CC_TF_UTILS_H_