Mojo Log service and a thread-safe client library.

services/log/log_impl.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_LOG_LOG_IMPL_H_
+#define SERVICES_LOG_LOG_IMPL_H_
+
+#include <string>
+
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "mojo/services/log/interfaces/entry.mojom.h"
+#include "mojo/services/log/interfaces/log.mojom.h"
+
+namespace mojo {
+
+class ApplicationConnection;
+
+namespace log {
+
+// This is an implementation of the log service
+// (see mojo/services/log/interfaces/log.mojom).  It only formats incoming
+// messages and prints them to stderr.
+//
+// This service implementation binds a new Log implementation for each incoming
+// application connection.
+class LogImpl : public Log {
+ public:
+  static void Create(ApplicationConnection* connection,
+                     InterfaceRequest<Log> request);
+
+  // |Log| implementation:
+  void AddEntry(EntryPtr entry) override;
+
+ private:
+  LogImpl(const std::string& remote_url, InterfaceRequest<Log> request);
+  ~LogImpl() override;
+
+  std::string FormatEntry(const EntryPtr& entry);
+
+  const std::string remote_url_;
+  StrongBinding<Log> binding_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(LogImpl);
+};
+
+}  // namespace log
+}  // namespace mojo
+
+#endif  // SERVICES_LOG_LOG_IMPL_H_