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PubSubClientRestHandler.go
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PubSubClientRestHandler.go
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/*
* Copyright (c) 2020 Devtron Labs
*
* 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 restHandler
import (
"encoding/json"
"net/http"
"strings"
pubsub "github.com/devtron-labs/common-lib/pubsub-lib"
"github.com/devtron-labs/devtron/api/restHandler/common"
"github.com/devtron-labs/devtron/pkg/pipeline"
"go.uber.org/zap"
)
type PubSubClientRestHandler interface {
PublishEventsToNats(w http.ResponseWriter, r *http.Request)
}
type PubSubClientRestHandlerImpl struct {
pubsubClient *pubsub.PubSubClientServiceImpl
logger *zap.SugaredLogger
cdConfig *pipeline.CdConfig
}
type PublishRequest struct {
Topic string `json:"topic"`
Payload json.RawMessage `json:"payload"`
}
func NewPubSubClientRestHandlerImpl(pubsubClient *pubsub.PubSubClientServiceImpl, logger *zap.SugaredLogger, cdConfig *pipeline.CdConfig) *PubSubClientRestHandlerImpl {
return &PubSubClientRestHandlerImpl{
pubsubClient: pubsubClient,
logger: logger,
cdConfig: cdConfig,
}
}
func (impl *PubSubClientRestHandlerImpl) PublishEventsToNats(w http.ResponseWriter, r *http.Request) {
decoder := json.NewDecoder(r.Body)
var publishRequest PublishRequest
err := decoder.Decode(&publishRequest)
if err != nil {
impl.logger.Errorw("request err, HandleExternalCiWebhook", "err", err, "payload", publishRequest)
common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
return
}
reqToken := r.Header.Get("Authorization")
splitToken := strings.Split(reqToken, "Bearer")
if len(splitToken) != 2 {
impl.logger.Debugw("request err, HandleExternalCiWebhook", "payload", publishRequest)
common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
return
}
reqToken = strings.TrimSpace(splitToken[1])
if impl.cdConfig.OrchestratorToken != reqToken {
common.WriteJsonResp(w, err, "Unauthorized req", http.StatusUnauthorized)
return
}
data, err := json.Marshal(publishRequest.Payload)
if err != nil {
impl.logger.Errorw("error occurred in un-marshaling publishResquest in publishEvents to Nats", "err", err)
common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
return
}
err = impl.pubsubClient.Publish(publishRequest.Topic, string(data))
if err != nil {
impl.logger.Errorw("service err, HandleExternalCiWebhook", "err", err, "payload", publishRequest)
common.WriteJsonResp(w, err, nil, http.StatusInternalServerError)
return
}
// result := make(map[string]string)
// result["id"] = id
common.WriteJsonResp(w, err, nil, http.StatusAccepted)
}