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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_FUCHSIA_SCOPED_SERVICE_PUBLISHER_H_
#define BASE_FUCHSIA_SCOPED_SERVICE_PUBLISHER_H_
#include <lib/async/dispatcher.h>
#include <lib/fidl/cpp/interface_request.h>
#include <lib/fidl/cpp/wire/connect_service.h>
#include <lib/sys/cpp/outgoing_directory.h>
#include <lib/vfs/cpp/pseudo_dir.h>
#include <lib/vfs/cpp/service.h>
#include <lib/zx/channel.h>
#include <memory>
#include <string>
#include <string_view>
#include <utility>
#include "base/base_export.h"
#include "base/fuchsia/fuchsia_logging.h"
#include "base/memory/raw_ptr.h"
namespace base {
template <typename Interface>
class BASE_EXPORT ScopedServicePublisher {
public:
// Publishes a public service in the specified |outgoing_directory|.
// |outgoing_directory| and |handler| must outlive the binding.
ScopedServicePublisher(sys::OutgoingDirectory* outgoing_directory,
fidl::InterfaceRequestHandler<Interface> handler,
std::string_view name = Interface::Name_)
: ScopedServicePublisher(outgoing_directory->GetOrCreateDirectory("svc"),
std::move(handler),
name) {}
// Publishes a service in the specified |pseudo_dir|. |pseudo_dir| and
// |handler| must outlive the binding.
ScopedServicePublisher(vfs::PseudoDir* pseudo_dir,
fidl::InterfaceRequestHandler<Interface> handler,
std::string_view name = Interface::Name_)
: pseudo_dir_(pseudo_dir), name_(name) {
zx_status_t status = pseudo_dir_->AddEntry(
name_, std::make_unique<vfs::Service>(std::move(handler)));
ZX_DCHECK(status == ZX_OK, status) << "vfs::PseudoDir::AddEntry";
}
ScopedServicePublisher(const ScopedServicePublisher&) = delete;
ScopedServicePublisher& operator=(const ScopedServicePublisher&) = delete;
~ScopedServicePublisher() { pseudo_dir_->RemoveEntry(name_); }
private:
const raw_ptr<vfs::PseudoDir> pseudo_dir_ = nullptr;
std::string name_;
};
template <typename Protocol>
class BASE_EXPORT ScopedNaturalServicePublisher {
public:
// Publishes a public service in the specified |outgoing_directory|.
// |outgoing_directory| and |handler| must outlive the binding. The service is
// unpublished on destruction.
ScopedNaturalServicePublisher(
sys::OutgoingDirectory* outgoing_directory,
fidl::ProtocolHandler<Protocol> handler,
std::string_view name = fidl::DiscoverableProtocolName<Protocol>)
: ScopedNaturalServicePublisher(
outgoing_directory->GetOrCreateDirectory("svc"),
std::move(handler),
name) {}
// Publishes a service in the specified |pseudo_dir|. |pseudo_dir| and
// |handler| must outlive the binding. The service is unpublished on
// destruction.
ScopedNaturalServicePublisher(
vfs::PseudoDir* pseudo_dir,
fidl::ProtocolHandler<Protocol> handler,
std::string_view name = fidl::DiscoverableProtocolName<Protocol>)
: pseudo_dir_(pseudo_dir), name_(name) {
zx_status_t status = pseudo_dir_->AddEntry(
name_, std::make_unique<vfs::Service>(
[handler = std::move(handler)](
zx::channel channel, async_dispatcher_t* dispatcher) {
handler(fidl::ServerEnd<Protocol>(std::move(channel)));
}));
ZX_DCHECK(status == ZX_OK, status) << "vfs::PseudoDir::AddEntry";
}
ScopedNaturalServicePublisher(const ScopedNaturalServicePublisher&) = delete;
ScopedNaturalServicePublisher& operator=(
const ScopedNaturalServicePublisher&) = delete;
~ScopedNaturalServicePublisher() { pseudo_dir_->RemoveEntry(name_); }
private:
const raw_ptr<vfs::PseudoDir> pseudo_dir_ = nullptr;
std::string name_;
};
} // namespace base
#endif // BASE_FUCHSIA_SCOPED_SERVICE_PUBLISHER_H_
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