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// Copyright 2014 Google Inc. All Rights Reserved.
//
// 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.
// Package container defines types for sub-container events and also
// defines an interface for container operation handlers.
package container
import info "github.com/google/cadvisor/info/v1"
// ListType describes whether listing should be just for a
// specific container or performed recursively.
type ListType int
const (
ListSelf ListType = iota
ListRecursive
)
type ContainerType int
const (
ContainerTypeRaw ContainerType = iota
ContainerTypeDocker
ContainerTypeCrio
ContainerTypeContainerd
ContainerTypeMesos
)
// Interface for container operation handlers.
type ContainerHandler interface {
// Returns the ContainerReference
ContainerReference() (info.ContainerReference, error)
// Returns container's isolation spec.
GetSpec() (info.ContainerSpec, error)
// Returns the current stats values of the container.
GetStats() (*info.ContainerStats, error)
// Returns the subcontainers of this container.
ListContainers(listType ListType) ([]info.ContainerReference, error)
// Returns the processes inside this container.
ListProcesses(listType ListType) ([]int, error)
// Returns absolute cgroup path for the requested resource.
GetCgroupPath(resource string) (string, error)
// Returns container labels, if available.
GetContainerLabels() map[string]string
// Returns the container's ip address, if available
GetContainerIPAddress() string
// Returns whether the container still exists.
Exists() bool
// Cleanup frees up any resources being held like fds or go routines, etc.
Cleanup()
// Start starts any necessary background goroutines - must be cleaned up in Cleanup().
// It is expected that most implementations will be a no-op.
Start()
// Type of handler
Type() ContainerType
}
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