subsystem.hpp

Go to the documentation of this file.

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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 __CGROUPS_ISOLATOR_SUBSYSTEM_HPP__
#define __CGROUPS_ISOLATOR_SUBSYSTEM_HPP__

#include <string>

#include <mesos/resources.hpp>

#include <mesos/slave/isolator.hpp>

#include <process/future.hpp>
#include <process/owned.hpp>
#include <process/process.hpp>

#include <stout/nothing.hpp>
#include <stout/try.hpp>

#include "slave/flags.hpp"

namespace mesos {
namespace internal {
namespace slave {

class Subsystem : public process::Process<Subsystem>
{
public:
  static Try<process::Owned<Subsystem>> create(
      const Flags& flags,
      const std::string& name,
      const std::string& hierarchy);

  virtual ~Subsystem() {}

  virtual std::string name() const = 0;

  virtual process::Future<Nothing> recover(
      const ContainerID& containerId,
      const std::string& cgroup);

  virtual process::Future<Nothing> prepare(
      const ContainerID& containerId,
      const std::string& cgroup);

  virtual process::Future<Nothing> isolate(
      const ContainerID& containerId,
      const std::string& cgroup,
      pid_t pid);

  virtual process::Future<mesos::slave::ContainerLimitation> watch(
      const ContainerID& containerId,
      const std::string& cgroup);

  virtual process::Future<Nothing> update(
      const ContainerID& containerId,
      const std::string& cgroup,
      const Resources& resources);

  virtual process::Future<ResourceStatistics> usage(
      const ContainerID& containerId,
      const std::string& cgroup);

  virtual process::Future<ContainerStatus> status(
      const ContainerID& containerId,
      const std::string& cgroup);

  virtual process::Future<Nothing> cleanup(
      const ContainerID& containerId,
      const std::string& cgroup);

protected:
  Subsystem(const Flags& _flags, const std::string& _hierarchy);

  const Flags flags;

  const std::string hierarchy;
};

} // namespace slave {
} // namespace internal {
} // namespace mesos {

#endif // __CGROUPS_ISOLATOR_SUBSYSTEM_HPP__