notify

package
v0.0.0-...-a7839fa Latest Latest
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 Go to latest Published: Jan 31, 2022 License: Apache-2.0 Imports: 25 Imported by: 0

Documentation

Index

Constants

View Source 
const MinTimeout = 10 * time.Second

MinTimeout is the minimum timeout that is set for the context of a call to a notification pipeline.

Variables

View Source 
var UserAgentHeader = fmt.Sprintf("Alertmanager/%s", version.Version)

UserAgentHeader is the default User-Agent for notification requests

Functions

func Drain 

func Drain(r *http.Response)

Drain consumes and closes the response's body to make sure that the HTTP client can reuse existing connections.

func FiringAlerts 

func FiringAlerts(ctx context.Context) ([]uint64, bool)

FiringAlerts extracts a slice of firing alerts from the context. Iff none exists, the second argument is false.

func Get 

func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error)

Get sends a GET request to the given URL

func GetTemplateData 

func GetTemplateData(ctx context.Context, tmpl *template.Template, alerts []*types.Alert, l log.Logger) *template.Data

GetTemplateData creates the template data from the context and the alerts.

func GroupKey 

func GroupKey(ctx context.Context) (string, bool)

GroupKey extracts a group key from the context. Iff none exists, the second argument is false.

func GroupLabels 

func GroupLabels(ctx context.Context) (model.LabelSet, bool)

GroupLabels extracts grouping label set from the context. Iff none exists, the second argument is false.

func MuteTimeIntervalNames 

func MuteTimeIntervalNames(ctx context.Context) ([]string, bool)

MuteTimeIntervalNames extracts a slice of mute time names from the context. Iff none exists, the second argument is false.

func Now 

func Now(ctx context.Context) (time.Time, bool)

Now extracts a now timestamp from the context. Iff none exists, the second argument is false.

func PostJSON 

func PostJSON(ctx context.Context, client *http.Client, url string, body io.Reader) (*http.Response, error)

PostJSON sends a POST request with JSON payload to the given URL.

func PostText 

func PostText(ctx context.Context, client *http.Client, url string, body io.Reader) (*http.Response, error)

PostText sends a POST request with text payload to the given URL.

func ReceiverName 

func ReceiverName(ctx context.Context) (string, bool)

ReceiverName extracts a receiver name from the context. Iff none exists, the second argument is false.

func RedactURL 

func RedactURL(err error) error

RedactURL removes the URL part from an error of *url.Error type.

func RepeatInterval 

func RepeatInterval(ctx context.Context) (time.Duration, bool)

RepeatInterval extracts a repeat interval from the context. Iff none exists, the second argument is false.

func ResolvedAlerts 

func ResolvedAlerts(ctx context.Context) ([]uint64, bool)

ResolvedAlerts extracts a slice of firing alerts from the context. Iff none exists, the second argument is false.

func TmplHTML 

func TmplHTML(tmpl *template.Template, data *template.Data, err *error) func(string) string

TmplHTML is using monadic error handling in order to make string templating less verbose. Use with care as the final error checking is easily missed.

func TmplText 

func TmplText(tmpl *template.Template, data *template.Data, err *error) func(string) string

TmplText is using monadic error handling in order to make string templating less verbose. Use with care as the final error checking is easily missed.

func Truncate 

func Truncate(s string, n int) (string, bool)

Truncate truncates a string to fit the given size.

func WithFiringAlerts 

func WithFiringAlerts(ctx context.Context, alerts []uint64) context.Context

WithFiringAlerts populates a context with a slice of firing alerts.

func WithGroupKey 

func WithGroupKey(ctx context.Context, s string) context.Context

WithGroupKey populates a context with a group key.

func WithGroupLabels 

func WithGroupLabels(ctx context.Context, lset model.LabelSet) context.Context

WithGroupLabels populates a context with grouping labels.

func WithMuteTimeIntervals 

func WithMuteTimeIntervals(ctx context.Context, mt []string) context.Context

WithMuteTimeIntervals populates a context with a slice of mute time names.

func WithNow 

func WithNow(ctx context.Context, t time.Time) context.Context

WithNow populates a context with a now timestamp.

func WithReceiverName 

func WithReceiverName(ctx context.Context, rcv string) context.Context

WithReceiverName populates a context with a receiver name.

func WithRepeatInterval 

func WithRepeatInterval(ctx context.Context, t time.Duration) context.Context

WithRepeatInterval populates a context with a repeat interval.

func WithResolvedAlerts 

func WithResolvedAlerts(ctx context.Context, alerts []uint64) context.Context

WithResolvedAlerts populates a context with a slice of resolved alerts.

Types

type DedupStage 

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

DedupStage filters alerts. Filtering happens based on a notification log.

func NewDedupStage 

func NewDedupStage(rs ResolvedSender, l NotificationLog, recv *nflogpb.Receiver) *DedupStage

NewDedupStage wraps a DedupStage that runs against the given notification log.

func (*DedupStage) Exec 

func (n *DedupStage) Exec(ctx context.Context, _ log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the Stage interface.

type FanoutStage 

type FanoutStage []Stage

FanoutStage executes its stages concurrently

func (FanoutStage) Exec 

func (fs FanoutStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec attempts to execute all stages concurrently and discards the results. It returns its input alerts and a types.MultiError if one or more stages fail.

type GossipSettleStage 

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

GossipSettleStage waits until the Gossip has settled to forward alerts.

func NewGossipSettleStage 

func NewGossipSettleStage(p Peer) *GossipSettleStage

NewGossipSettleStage returns a new GossipSettleStage.

func (*GossipSettleStage) Exec 

func (n *GossipSettleStage) Exec(ctx context.Context, _ log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

type Integration 

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

Integration wraps a notifier and its configuration to be uniquely identified by name and index from its origin in the configuration.

func NewIntegration 

func NewIntegration(notifier Notifier, rs ResolvedSender, name string, idx int) Integration

NewIntegration returns a new integration.

func (*Integration) Index 

func (i *Integration) Index() int

Index returns the index of the integration.

func (*Integration) Name 

func (i *Integration) Name() string

Name returns the name of the integration.

func (*Integration) Notify 

func (i *Integration) Notify(ctx context.Context, alerts ...*types.Alert) (bool, error)

Notify implements the Notifier interface.

func (*Integration) SendResolved 

func (i *Integration) SendResolved() bool

SendResolved implements the ResolvedSender interface.

func (*Integration) String 

func (i *Integration) String() string

String implements the Stringer interface.

type Key 

type Key string

Key is a string that can be hashed.

func ExtractGroupKey 

func ExtractGroupKey(ctx context.Context) (Key, error)

ExtractGroupKey gets the group key from the context.

func (Key) Hash 

func (k Key) Hash() string

Hash returns the sha256 for a group key as integrations may have maximum length requirements on deduplication keys.

func (Key) String 

func (k Key) String() string

type Metrics 

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

func NewMetrics 

func NewMetrics(r prometheus.Registerer) *Metrics

type MultiStage 

type MultiStage []Stage

A MultiStage executes a series of stages sequentially.

func (MultiStage) Exec 

func (ms MultiStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the Stage interface.

type MuteStage 

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

MuteStage filters alerts through a Muter.

func NewMuteStage 

func NewMuteStage(m types.Muter) *MuteStage

NewMuteStage return a new MuteStage.

func (*MuteStage) Exec 

func (n *MuteStage) Exec(ctx context.Context, _ log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the Stage interface.

type NotificationLog 

type NotificationLog interface {
	Log(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error
	Query(params ...nflog.QueryParam) ([]*nflogpb.Entry, error)
}

type Notifier 

type Notifier interface {
	Notify(context.Context, ...*types.Alert) (bool, error)
}

Notifier notifies about alerts under constraints of the given context. It returns an error if unsuccessful and a flag whether the error is recoverable. This information is useful for a retry logic.

type Peer 

type Peer interface {
	// WaitReady waits until the node silences and notifications have settled before attempting to send a notification.
	WaitReady(context.Context) error
}

Peer represents the cluster node from where we are the sending the notification.

type PipelineBuilder 

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

func NewPipelineBuilder 

func NewPipelineBuilder(r prometheus.Registerer) *PipelineBuilder

func (*PipelineBuilder) New 

func (pb *PipelineBuilder) New(
	receivers map[string][]Integration,
	wait func() time.Duration,
	inhibitor *inhibit.Inhibitor,
	silencer *silence.Silencer,
	muteTimes map[string][]timeinterval.TimeInterval,
	notificationLog NotificationLog,
	peer Peer,
) RoutingStage

New returns a map of receivers to Stages.

type ResolvedSender 

type ResolvedSender interface {
	SendResolved() bool
}

ResolvedSender returns true if resolved notifications should be sent.

type Retrier 

type Retrier struct {
	// Function to return additional information in the error message.
	CustomDetailsFunc func(code int, body io.Reader) string
	// Additional HTTP status codes that should be retried.
	RetryCodes []int
}

Retrier knows when to retry an HTTP request to a receiver. 2xx status codes are successful, anything else is a failure and only 5xx status codes should be retried.

func (*Retrier) Check 

func (r *Retrier) Check(statusCode int, body io.Reader) (bool, error)

Check returns a boolean indicating whether the request should be retried and an optional error if the request has failed. If body is not nil, it will be included in the error message.

type RetryStage 

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

RetryStage notifies via passed integration with exponential backoff until it succeeds. It aborts if the context is canceled or timed out.

func NewRetryStage 

func NewRetryStage(i Integration, groupName string, metrics *Metrics) *RetryStage

NewRetryStage returns a new instance of a RetryStage.

func (RetryStage) Exec 

func (r RetryStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

type RoutingStage 

type RoutingStage map[string]Stage

RoutingStage executes the inner stages based on the receiver specified in the context.

func (RoutingStage) Exec 

func (rs RoutingStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the Stage interface.

type SetNotifiesStage 

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

SetNotifiesStage sets the notification information about passed alerts. The passed alerts should have already been sent to the receivers.

func NewSetNotifiesStage 

func NewSetNotifiesStage(l NotificationLog, recv *nflogpb.Receiver) *SetNotifiesStage

NewSetNotifiesStage returns a new instance of a SetNotifiesStage.

func (SetNotifiesStage) Exec 

func (n SetNotifiesStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the Stage interface.

type Stage 

type Stage interface {
	Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)
}

A Stage processes alerts under the constraints of the given context.

type StageFunc 

type StageFunc func(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

StageFunc wraps a function to represent a Stage.

func (StageFunc) Exec 

func (f StageFunc) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements Stage interface.

type TimeMuteStage 

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

func NewTimeMuteStage 

func NewTimeMuteStage(mt map[string][]timeinterval.TimeInterval) *TimeMuteStage

func (TimeMuteStage) Exec 

func (tms TimeMuteStage) Exec(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the stage interface for TimeMuteStage. TimeMuteStage is responsible for muting alerts whose route is not in an active time.

type WaitStage 

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

WaitStage waits for a certain amount of time before continuing or until the context is done.

func NewWaitStage 

func NewWaitStage(wait func() time.Duration) *WaitStage

NewWaitStage returns a new WaitStage.

func (*WaitStage) Exec 

func (ws *WaitStage) Exec(ctx context.Context, _ log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error)

Exec implements the Stage interface.

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