notify

package
v0.23.0-rc.0 Latest Latest
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 Go to latest Published: Aug 9, 2021 License: Apache-2.0 Imports: 24 Imported by: 263

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Index

Constants

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const MinTimeout = 10 * time.Second

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

Variables

This section is empty.

Functions

func Drain added in v0.18.0 

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 added in v0.6.0 

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 GetTemplateData added in v0.18.0 

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 added in v0.22.0 

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 added in v0.18.0 

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 added in v0.18.0 

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 added in v0.5.0 

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 added in v0.18.0 

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 added in v0.6.0 

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 added in v0.18.0 

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 added in v0.18.0 

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 added in v0.18.0 

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

Truncate truncates a string to fit the given size.

func WithFiringAlerts added in v0.6.0 

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 added in v0.22.0 

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 added in v0.5.0 

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 added in v0.6.0 

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

WithResolvedAlerts populates a context with a slice of resolved alerts.

Types

type DedupStage added in v0.5.0 

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

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

func NewDedupStage added in v0.5.0 

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

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

func (*DedupStage) Exec added in v0.5.0 

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

Exec implements the Stage interface.

type FanoutStage added in v0.5.0 

type FanoutStage []Stage

FanoutStage executes its stages concurrently

func (FanoutStage) Exec added in v0.5.0 

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 added in v0.15.0 

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

GossipSettleStage waits until the Gossip has settled to forward alerts.

func NewGossipSettleStage added in v0.15.0 

func NewGossipSettleStage(p Peer) *GossipSettleStage

NewGossipSettleStage returns a new GossipSettleStage.

func (*GossipSettleStage) Exec added in v0.15.0 

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

type Integration added in v0.5.0 

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 added in v0.18.0 

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

NewIntegration returns a new integration.

func (*Integration) Index added in v0.18.0 

func (i *Integration) Index() int

Index returns the index of the integration.

func (*Integration) Name added in v0.18.0 

func (i *Integration) Name() string

Name returns the name of the integration.

func (*Integration) Notify added in v0.5.0 

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

Notify implements the Notifier interface.

func (*Integration) SendResolved added in v0.18.0 

func (i *Integration) SendResolved() bool

SendResolved implements the ResolvedSender interface.

func (*Integration) String added in v0.21.0 

func (i *Integration) String() string

String implements the Stringer interface.

type Key added in v0.18.0 

type Key string

Key is a string that can be hashed.

func ExtractGroupKey added in v0.18.0 

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

ExtractGroupKey gets the group key from the context.

func (Key) Hash added in v0.18.0 

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 added in v0.18.0 

func (k Key) String() string

type Metrics added in v0.22.0 

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

func NewMetrics added in v0.22.0 

func NewMetrics(r prometheus.Registerer) *Metrics

type MultiStage added in v0.5.0 

type MultiStage []Stage

A MultiStage executes a series of stages sequentially.

func (MultiStage) Exec added in v0.5.0 

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 added in v0.17.0 

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

MuteStage filters alerts through a Muter.

func NewMuteStage added in v0.17.0 

func NewMuteStage(m types.Muter) *MuteStage

NewMuteStage return a new MuteStage.

func (*MuteStage) Exec added in v0.17.0 

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

Exec implements the Stage interface.

type NotificationLog added in v0.15.0 

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 added in v0.22.0 

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 added in v0.19.0 

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

func NewPipelineBuilder added in v0.19.0 

func NewPipelineBuilder(r prometheus.Registerer) *PipelineBuilder

func (*PipelineBuilder) New added in v0.19.0 

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 added in v0.18.0 

type ResolvedSender interface {
	SendResolved() bool
}

ResolvedSender returns true if resolved notifications should be sent.

type Retrier added in v0.19.0 

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 added in v0.19.0 

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 added in v0.5.0 

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 added in v0.5.0 

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

NewRetryStage returns a new instance of a RetryStage.

func (RetryStage) Exec added in v0.5.0 

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

type RoutingStage added in v0.5.0 

type RoutingStage map[string]Stage

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

func (RoutingStage) Exec added in v0.5.0 

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 added in v0.5.0 

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 added in v0.5.0 

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

NewSetNotifiesStage returns a new instance of a SetNotifiesStage.

func (SetNotifiesStage) Exec added in v0.5.0 

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 added in v0.5.0 

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 added in v0.5.0 

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 added in v0.5.0 

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

Exec implements Stage interface.

type TimeMuteStage added in v0.22.0 

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

func NewTimeMuteStage added in v0.22.0 

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

func (TimeMuteStage) Exec added in v0.22.0 

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 added in v0.5.0 

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 added in v0.5.0 

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

NewWaitStage returns a new WaitStage.

func (*WaitStage) Exec added in v0.5.0 

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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