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eventpublisher.go
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eventpublisher.go
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/**
* Copyright 2015 Comcast Cable Communications Management, LLC
*
* 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 jtl
import (
. "github.com/Comcast/eel/util"
)
type (
// EventPublisher is the common interface for all event publishers
EventPublisher interface {
// Publish sends the transformed event payload to the desired endpoint using the appropriate protocol (for example, HTTP POST).
Publish() (string, error)
SetEndpoint(endpoint string)
GetEndpoint() string
SetDebug(debug bool)
GetDebug() bool
SetPayload(payload string)
GetPayload() string
SetAuthInfo(auth map[string]string)
GetProtocol() string
GetApi() string
SetHeaders(headers map[string]string)
GetHeaders() map[string]string
SetVerb(verb string)
GetVerb() string
SetPath(path string)
GetPath() string
GetUrl() string
SetPayloadParsed(event *JDoc)
GetPayloadParsed() *JDoc
GetErrors() []error
}
)
var publisherMap = make(map[string]NewPublisher, 0)
type NewPublisher func(ctx Context) EventPublisher
func init() {
publisherMap["http"] = NewHttpPublisher
publisherMap["null"] = NewNullPublisher
}
// RegisterEventPublisher registers an external event publisher implementation for a new protocol
func RegisterEventPublisher(newPublisher NewPublisher, protocol string) {
// maybe return an error if a publisher is already registered
publisherMap[protocol] = newPublisher
}
// UnregisterEventPublisher removes a publisher implementation
func UnregisterEventPublisher(protocol string) {
delete(publisherMap, protocol)
}
// NewEventPublisher factory method to return matching publisher for a given protocol
func NewEventPublisher(ctx Context, protocol string) EventPublisher {
if newPublisher, ok := publisherMap[protocol]; ok {
return newPublisher(ctx)
}
return nil
}