119 lines
3.0 KiB
Go
119 lines
3.0 KiB
Go
/*
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Copyright 2021 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package notifier
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import (
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"context"
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"encoding/json"
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"fmt"
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"github.com/Azure/azure-amqp-common-go/v4/auth"
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eventhub "github.com/Azure/azure-event-hubs-go/v3"
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eventv1 "github.com/fluxcd/pkg/apis/event/v1beta1"
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)
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// AzureEventHub holds the eventhub client
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type AzureEventHub struct {
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Hub *eventhub.Hub
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}
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// NewAzureEventHub creates a eventhub client
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func NewAzureEventHub(endpointURL, token, eventHubNamespace string) (*AzureEventHub, error) {
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var hub *eventhub.Hub
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var err error
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// token should only be defined if JWT is used
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if token != "" {
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hub, err = newJWTHub(endpointURL, token, eventHubNamespace)
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if err != nil {
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return nil, fmt.Errorf("failed to create a eventhub using JWT %v", err)
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}
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} else {
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hub, err = newSASHub(endpointURL)
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if err != nil {
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return nil, fmt.Errorf("failed to create a eventhub using SAS %v", err)
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}
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}
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return &AzureEventHub{
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Hub: hub,
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}, nil
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}
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// Post all notification-controller messages to EventHub
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func (e *AzureEventHub) Post(ctx context.Context, event eventv1.Event) error {
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// Skip Git commit status update event.
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if event.HasMetadata(eventv1.MetaCommitStatusKey, eventv1.MetaCommitStatusUpdateValue) {
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return nil
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}
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eventBytes, err := json.Marshal(event)
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if err != nil {
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return fmt.Errorf("Unable to marshall event: %w", err)
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}
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err = e.Hub.Send(ctx, eventhub.NewEvent(eventBytes))
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if err != nil {
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return fmt.Errorf("Failed to send msg: %w", err)
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}
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err = e.Hub.Close(ctx)
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if err != nil {
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return fmt.Errorf("Unable to close connection: %w", err)
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}
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return nil
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}
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// PureJWT just contains the jwt
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type PureJWT struct {
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jwt string
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}
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// NewJWTProvider create a pureJWT method
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func NewJWTProvider(jwt string) *PureJWT {
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return &PureJWT{
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jwt: jwt,
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}
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}
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// GetToken uses a JWT token, we assume that we will get new tokens when needed, thus no Expiry defined
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func (j *PureJWT) GetToken(uri string) (*auth.Token, error) {
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return &auth.Token{
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TokenType: auth.CBSTokenTypeJWT,
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Token: j.jwt,
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Expiry: "",
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}, nil
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}
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// newJWTHub used when address is a JWT token
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func newJWTHub(eventhubName, token, eventHubNamespace string) (*eventhub.Hub, error) {
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provider := NewJWTProvider(token)
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hub, err := eventhub.NewHub(eventHubNamespace, eventhubName, provider)
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if err != nil {
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return nil, err
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}
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return hub, nil
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}
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// newSASHub used when address is a SAS ConnectionString
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func newSASHub(address string) (*eventhub.Hub, error) {
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hub, err := eventhub.NewHubFromConnectionString(address)
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if err != nil {
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return nil, err
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}
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return hub, nil
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}
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