Documentation
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Index ¶
Constants ¶
const ( // EventHistory is the header containing all channel hosts traversed by the event. // This is an experimental header: https://github.com/knative/eventing/issues/638. EventHistory = "knativehistory" EventHistorySeparator = "; " )
Variables ¶
This section is empty.
Functions ¶
func AppendHistory ¶ added in v0.10.0
func AppendHistory(event *cloudevents.Event, host string)
AppendToHistory appends a new host at the end of the list of hosts of the event history.
Types ¶
type ChannelReference ¶
ChannelReference references a Channel within the cluster by name and namespace.
func ParseChannel ¶
func ParseChannel(host string) (ChannelReference, error)
ParseChannel converts the channel's hostname into a channel reference.
func (*ChannelReference) String ¶
func (r *ChannelReference) String() string
type Dispatcher ¶
type EventDispatcher ¶ added in v0.10.0
type EventDispatcher struct {
// contains filtered or unexported fields
}
EventDispatcher dispatches events to a destination over HTTP.
func NewEventDispatcher ¶ added in v0.10.0
func NewEventDispatcher(logger *zap.Logger) *EventDispatcher
NewEventDispatcher creates a new event dispatcher that can dispatch events to HTTP destinations.
func (*EventDispatcher) DispatchEvent ¶ added in v0.10.0
func (d *EventDispatcher) DispatchEvent(ctx context.Context, event cloudevents.Event, destination, reply string) error
DispatchEvent dispatches an event to a destination over HTTP.
The destination and reply are URLs.
type EventReceiver ¶ added in v0.10.0
type EventReceiver struct {
// contains filtered or unexported fields
}
EventReceiver starts a server to receive new events for the channel dispatcher. The new event is emitted via the receiver function.
func NewEventReceiver ¶ added in v0.10.0
func NewEventReceiver(receiverFunc ReceiverFunc, logger *zap.Logger, opts ...ReceiverOptions) (*EventReceiver, error)
NewEventReceiver creates an event receiver passing new events to the receiverFunc.
func (*EventReceiver) ServeHTTP ¶ added in v0.10.0
func (r *EventReceiver) ServeHTTP(ctx context.Context, event cloudevents.Event, resp *cloudevents.EventResponse) error
func (*EventReceiver) Start ¶ added in v0.10.0
func (r *EventReceiver) Start(ctx context.Context) error
Start begins to receive events for the receiver.
Only HTTP POST requests to the root path (/) are accepted. If other paths or methods are needed, use the HandleRequest method directly with another HTTP server.
type ReceiverFunc ¶ added in v0.10.0
type ReceiverFunc func(context.Context, ChannelReference, cloudevents.Event) error
ReceiverFunc is the function to be called for handling the event.
type ReceiverOptions ¶
type ReceiverOptions func(*EventReceiver) error
ReceiverOptions provides functional options to EventReceiver function.
func ResolveChannelFromHostHeader ¶
func ResolveChannelFromHostHeader(hostToChannelFunc ResolveChannelFromHostFunc) ReceiverOptions
ResolveChannelFromHostHeader is a ReceiverOption for NewEventReceiver which enables the caller to overwrite the default behaviour defined by ParseChannel function.
type ResolveChannelFromHostFunc ¶
type ResolveChannelFromHostFunc func(string) (ChannelReference, error)
ResolveChannelFromHostFunc function enables EventReceiver to get the Channel Reference from incoming request HostHeader before calling receiverFunc. TODO change this to take in a URL, rather than just the host string.
That will allow us to use the path to distinguish between Channels too. Issue: https://github.com/knative/eventing/issues/1952
type UnknownChannelError ¶ added in v0.10.0
type UnknownChannelError struct {
// contains filtered or unexported fields
}
UnknownChannelError represents the error when an event is received by a channel dispatcher for a channel that does not exist.
func (*UnknownChannelError) Error ¶ added in v0.10.0
func (e *UnknownChannelError) Error() string
Source Files
Directories
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| Path | Synopsis |
|---|---|
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Package fanout provides an http.Handler that takes in one request and fans it out to N other requests, based on a list of Subscriptions.
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Package fanout provides an http.Handler that takes in one request and fans it out to N other requests, based on a list of Subscriptions. |
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Package multichannelfanout provides an http.Handler that takes in one request to a Knative Channel and fans it out to N other requests.
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Package multichannelfanout provides an http.Handler that takes in one request to a Knative Channel and fans it out to N other requests. |
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Package swappable provides an http.Handler that delegates all HTTP requests to an underlying multichannelfanout.Handler.
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Package swappable provides an http.Handler that delegates all HTTP requests to an underlying multichannelfanout.Handler. |