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// Copyright 2019 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 FUCHSIA_BASE_AGENT_MANAGER_H_
#define FUCHSIA_BASE_AGENT_MANAGER_H_
#include <fuchsia/modular/cpp/fidl.h>
#include <fuchsia/sys/cpp/fidl.h>
#include <lib/sys/cpp/component_context.h>
#include "base/containers/flat_map.h"
#include "base/macros.h"
#include "base/strings/string_piece.h"
namespace cr_fuchsia {
// Connects to the ComponentContext service from the supplied ServiceDirectory,
// and uses it to connect-to and manage one or more Agents used by the caller.
class AgentManager {
public:
explicit AgentManager(const sys::ServiceDirectory* incoming);
~AgentManager();
// Connects to |agent| so satisfying the specified |request|.
// |agent| will be kept alive until this AgentManager is destroyed.
template <typename Interface>
void ConnectToAgentService(base::StringPiece agent,
fidl::InterfaceRequest<Interface> request) {
ConnectToAgentServiceUnsafe(agent, Interface::Name_, request.TakeChannel());
}
template <typename Interface>
fidl::InterfacePtr<Interface> ConnectToAgentService(base::StringPiece agent) {
fidl::InterfacePtr<Interface> ptr;
ConnectToAgentService(agent, ptr.NewRequest());
return ptr;
}
private:
// Holds a pointer to Agent-provided services, and keeps the Agent alive.
struct AgentConnection {
AgentConnection();
AgentConnection(AgentConnection&& other);
~AgentConnection();
AgentConnection& operator=(AgentConnection&& other);
fuchsia::sys::ServiceProviderPtr services;
fuchsia::modular::AgentControllerPtr controller;
};
void ConnectToAgentServiceUnsafe(base::StringPiece agent,
base::StringPiece interface,
zx::channel request);
const fuchsia::modular::ComponentContextPtr component_context_;
// Cache of resources for Agents which we're actively using. All |agents_|
// are kept alive until the AgentManager is torn down, for now.
base::flat_map<std::string, AgentConnection> agents_;
DISALLOW_COPY_AND_ASSIGN(AgentManager);
};
} // namespace cr_fuchsia
#endif // FUCHSIA_BASE_AGENT_MANAGER_H_
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