Initial commit

utils.h

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+// Copyright 2020 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 UTILS_H_
+#define UTILS_H_
+
+#include <string>
+
+
+double TimeInSeconds();
+
+std::string Json(const std::string& field, int v);
+std::string Json(const std::string& field, uint64_t v);
+std::string Json(const std::string& field, double v);
+std::string JsonBool(const std::string& field, bool v);
+std::string Json(const std::string& field, const std::string& v);
+std::string JsonRecord(const std::string& name, const std::string& v);
+
+// Emits null field.
+std::string JsonNull(const std::string& field);
+
+// Returns host and timestamp fields. ToDo: probably add a run id.
+std::string JTag();
+
+// Emits a run status record.
+std::string Jstat(const std::string& v);
+
+#endif  // UTILS_H_