events

package
v4.1.2 Latest Latest
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Published: Jun 10, 2022 License: Apache-2.0 Imports: 17 Imported by: 0

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Index

Constants

View Source
const (
	// Container - event is related to containers
	Container Type = "container"
	// Image - event is related to images
	Image Type = "image"
	// Network - event is related to networks
	Network Type = "network"
	// Pod - event is related to pods
	Pod Type = "pod"
	// System - event is related to Podman whole and not to any specific
	// container/pod/image/volume
	System Type = "system"
	// Volume - event is related to volumes
	Volume Type = "volume"
	// Machine - event is related to machine VM's
	Machine Type = "machine"

	// Attach ...
	Attach Status = "attach"
	// AutoUpdate ...
	AutoUpdate Status = "auto-update"
	// Build ...
	Build Status = "build"
	// Checkpoint ...
	Checkpoint Status = "checkpoint"
	// Cleanup ...
	Cleanup Status = "cleanup"
	// Commit ...
	Commit Status = "commit"
	// Copy ...
	Copy Status = "copy"
	// Create ...
	Create Status = "create"
	// Exec ...
	Exec Status = "exec"
	// ExecDied indicates that an exec session in a container died.
	ExecDied Status = "exec_died"
	// Exited indicates that a container's process died
	Exited Status = "died"
	// Export ...
	Export Status = "export"
	// History ...
	History Status = "history"
	// Import ...
	Import Status = "import"
	// Init ...
	Init Status = "init"
	// Kill ...
	Kill Status = "kill"
	// LoadFromArchive ...
	LoadFromArchive Status = "loadfromarchive"
	// Mount ...
	Mount Status = "mount"
	// NetworkConnect
	NetworkConnect Status = "connect"
	// NetworkDisconnect
	NetworkDisconnect Status = "disconnect"
	// Pause ...
	Pause Status = "pause"
	// Prune ...
	Prune Status = "prune"
	// Pull ...
	Pull Status = "pull"
	// Push ...
	Push Status = "push"
	// Refresh indicates that the system refreshed the state after a
	// reboot.
	Refresh Status = "refresh"
	// Remove ...
	Remove Status = "remove"
	// Rename indicates that a container was renamed
	Rename Status = "rename"
	// Renumber indicates that lock numbers were reallocated at user
	// request.
	Renumber Status = "renumber"
	// Restart indicates the target was restarted via an API call.
	Restart Status = "restart"
	// Restore ...
	Restore Status = "restore"
	// Rotate indicates that the log file was rotated
	Rotate Status = "log-rotation"
	// Save ...
	Save Status = "save"
	// Start ...
	Start Status = "start"
	// Stop ...
	Stop Status = "stop"
	// Sync ...
	Sync Status = "sync"
	// Tag ...
	Tag Status = "tag"
	// Unmount ...
	Unmount Status = "unmount"
	// Unpause ...
	Unpause Status = "unpause"
	// Untag ...
	Untag Status = "untag"
)

When updating this list below please also update the shell completion list in cmd/podman/common/completion.go and the StringToXXX function in events.go.

View Source
const DefaultEventerType = LogFile

DefaultEventerType is logfile when systemd is not present

Variables

View Source
var (
	// ErrEventTypeBlank indicates the event log found something done by podman
	// but it isn't likely an event
	ErrEventTypeBlank = errors.New("event type blank")

	// ErrEventNotFound indicates that the event was not found in the event log
	ErrEventNotFound = errors.New("unable to find event")
)
View Source
var ErrNoJournaldLogging = errors.New("No support for journald logging")

ErrNoJournaldLogging indicates that there is no journald logging supported (requires libsystemd)

Functions

func IsValidEventer

func IsValidEventer(eventer string) bool

IsValidEventer checks if the given string is a valid eventer type.

Types

type Details

type Details struct {
	// ID is the event ID
	ID string
	// Attributes can be used to describe specifics about the event
	// in the case of a container event, labels for example
	Attributes map[string]string
}

Details describes specifics about certain events, specifically around container events

type Event

type Event struct {
	// ContainerExitCode is for storing the exit code of a container which can
	// be used for "internal" event notification
	ContainerExitCode int `json:",omitempty"`
	// ID can be for the container, image, volume, etc
	ID string `json:",omitempty"`
	// Image used where applicable
	Image string `json:",omitempty"`
	// Name where applicable
	Name string `json:",omitempty"`
	// Network is the network name in a network event
	Network string `json:"network,omitempty"`
	// Status describes the event that occurred
	Status Status
	// Time the event occurred
	Time time.Time
	// Type of event that occurred
	Type Type

	Details
}

Event describes the attributes of a libpod event

func NewEvent

func NewEvent(status Status) Event

NewEvent creates an event struct and populates with the given status and time.

func (*Event) Recycle

func (e *Event) Recycle(path string, remove bool) error

Recycle checks if the event log has reach a limit and if so renames the current log and starts a new one. The remove bool indicates the old log file should be deleted.

func (*Event) ToHumanReadable

func (e *Event) ToHumanReadable(truncate bool) string

ToHumanReadable returns human-readable event as a formatted string

func (*Event) ToJSONString

func (e *Event) ToJSONString() (string, error)

ToJSONString returns the event as a json'ified string

type EventFilter

type EventFilter func(*Event) bool

EventFilter for filtering events

type EventLogFile

type EventLogFile struct {
	// contains filtered or unexported fields
}

EventLogFile is the structure for event writing to a logfile. It contains the eventer options and the event itself. Methods for reading and writing are also defined from it.

func (EventLogFile) Read

func (e EventLogFile) Read(ctx context.Context, options ReadOptions) error

Reads from the log file

func (EventLogFile) String

func (e EventLogFile) String() string

String returns a string representation of the logger

func (EventLogFile) Write

func (e EventLogFile) Write(ee Event) error

Writes to the log file

type EventMemory

type EventMemory struct {
	// contains filtered or unexported fields
}

EventMemory is the structure for event writing to a channel. It contains the eventer options and the event itself. Methods for reading and writing are also defined from it.

func (EventMemory) Read

func (e EventMemory) Read(ctx context.Context, options ReadOptions) (err error)

Read event(s) from memory queue

func (EventMemory) String

func (e EventMemory) String() string

String returns eventer type

func (EventMemory) Write

func (e EventMemory) Write(event Event) (err error)

Write event to memory queue

type EventToNull

type EventToNull struct{}

EventToNull is an eventer type that only performs write operations and only writes to /dev/null. It is meant for unittests only

func (EventToNull) Read

func (e EventToNull) Read(ctx context.Context, options ReadOptions) error

Read does nothing. Do not use it.

func (EventToNull) String

func (e EventToNull) String() string

String returns a string representation of the logger

func (EventToNull) Write

func (e EventToNull) Write(ee Event) error

Write eats the event and always returns nil

type Eventer

type Eventer interface {
	// Write an event to a backend
	Write(event Event) error
	// Read an event from the backend
	Read(ctx context.Context, options ReadOptions) error
	// String returns the type of event logger
	String() string
}

Eventer is the interface for journald or file event logging

func NewEventer

func NewEventer(options EventerOptions) (Eventer, error)

NewEventer creates an eventer based on the eventer type

func NewMemoryEventer

func NewMemoryEventer() Eventer

NewMemoryEventer returns configured MemoryEventer

func NewNullEventer

func NewNullEventer() Eventer

NewNullEventer returns a new null eventer. You should only do this for the purposes on internal libpod testing.

type EventerOptions

type EventerOptions struct {
	// EventerType describes whether to use journald, file or memory
	EventerType string
	// LogFilePath is the path to where the log file should reside if using
	// the file logger
	LogFilePath string
	// LogFileMaxSize is the default limit used for rotating the log file
	LogFileMaxSize uint64
}

EventerOptions describe options that need to be passed to create an eventer

type EventerType

type EventerType int

EventerType ...

const (
	// LogFile indicates the event logger will be a logfile
	LogFile EventerType = iota
	// Journald indicates journald should be used to log events
	Journald EventerType = iota
	// Null is a no-op events logger. It does not read or write events.
	Null EventerType = iota
	// Memory indicates the event logger will hold events in memory
	Memory EventerType = iota
)

func (EventerType) String

func (et EventerType) String() string

String returns a string representation of EventerType

type ReadOptions

type ReadOptions struct {
	// EventChannel is the comm path back to user
	EventChannel chan *Event
	// Filters are key/value pairs that describe to limit output
	Filters []string
	// FromStart means you start reading from the start of the logs
	FromStart bool
	// Since reads "since" the given time
	Since string
	// Stream is follow
	Stream bool
	// Until reads "until" the given time
	Until string
}

ReadOptions describe the attributes needed to read event logs

type Status

type Status string

Status describes the actual event action (stop, start, create, kill)

func StringToStatus

func StringToStatus(name string) (Status, error)

StringToStatus converts a string to an Event Status

func (Status) String

func (s Status) String() string

String converts a status to a string

type Type

type Type string

Type of event that occurred (container, volume, image, pod, etc)

func StringToType

func StringToType(name string) (Type, error)

StringToType converts string to an EventType

func (Type) String

func (t Type) String() string

String converts a Type to a string

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