136 lines
3.6 KiB
Go
136 lines
3.6 KiB
Go
/*
|
|
Copyright 2021 The Dapr Authors
|
|
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 sns
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"reflect"
|
|
|
|
"github.com/aws/aws-sdk-go/service/sns"
|
|
|
|
"github.com/dapr/components-contrib/bindings"
|
|
awsAuth "github.com/dapr/components-contrib/common/authentication/aws"
|
|
"github.com/dapr/components-contrib/metadata"
|
|
"github.com/dapr/kit/logger"
|
|
kitmd "github.com/dapr/kit/metadata"
|
|
)
|
|
|
|
// AWSSNS is an AWS SNS binding.
|
|
type AWSSNS struct {
|
|
authProvider awsAuth.Provider
|
|
topicARN string
|
|
|
|
logger logger.Logger
|
|
}
|
|
|
|
type snsMetadata struct {
|
|
// Ignored by metadata parser because included in built-in authentication profile
|
|
AccessKey string `json:"accessKey" mapstructure:"accessKey" mdignore:"true"`
|
|
SecretKey string `json:"secretKey" mapstructure:"secretKey" mdignore:"true"`
|
|
SessionToken string `json:"sessionToken" mapstructure:"sessionToken" mdignore:"true"`
|
|
|
|
TopicArn string `json:"topicArn"`
|
|
Region string `json:"region" mapstructure:"region" mapstructurealiases:"awsRegion" mdignore:"true"`
|
|
Endpoint string `json:"endpoint"`
|
|
}
|
|
|
|
type dataPayload struct {
|
|
Message interface{} `json:"message"`
|
|
Subject interface{} `json:"subject"`
|
|
}
|
|
|
|
// NewAWSSNS creates a new AWSSNS binding instance.
|
|
func NewAWSSNS(logger logger.Logger) bindings.OutputBinding {
|
|
return &AWSSNS{logger: logger}
|
|
}
|
|
|
|
// Init does metadata parsing.
|
|
func (a *AWSSNS) Init(ctx context.Context, metadata bindings.Metadata) error {
|
|
m, err := a.parseMetadata(metadata)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
opts := awsAuth.Options{
|
|
Logger: a.logger,
|
|
Properties: metadata.Properties,
|
|
Region: m.Region,
|
|
Endpoint: m.Endpoint,
|
|
AccessKey: m.AccessKey,
|
|
SecretKey: m.SecretKey,
|
|
SessionToken: m.SessionToken,
|
|
}
|
|
// extra configs needed per component type
|
|
provider, err := awsAuth.NewProvider(ctx, opts, awsAuth.GetConfig(opts))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
a.authProvider = provider
|
|
a.topicARN = m.TopicArn
|
|
|
|
return nil
|
|
}
|
|
|
|
func (a *AWSSNS) parseMetadata(meta bindings.Metadata) (*snsMetadata, error) {
|
|
m := snsMetadata{}
|
|
err := kitmd.DecodeMetadata(meta.Properties, &m)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &m, nil
|
|
}
|
|
|
|
func (a *AWSSNS) Operations() []bindings.OperationKind {
|
|
return []bindings.OperationKind{bindings.CreateOperation}
|
|
}
|
|
|
|
func (a *AWSSNS) Invoke(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
|
|
var payload dataPayload
|
|
err := json.Unmarshal(req.Data, &payload)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
msg := fmt.Sprintf("%v", payload.Message)
|
|
subject := fmt.Sprintf("%v", payload.Subject)
|
|
|
|
_, err = a.authProvider.Sns().Sns.PublishWithContext(ctx, &sns.PublishInput{
|
|
Message: &msg,
|
|
Subject: &subject,
|
|
TopicArn: &a.topicARN,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
// GetComponentMetadata returns the metadata of the component.
|
|
func (a *AWSSNS) GetComponentMetadata() (metadataInfo metadata.MetadataMap) {
|
|
metadataStruct := snsMetadata{}
|
|
metadata.GetMetadataInfoFromStructType(reflect.TypeOf(metadataStruct), &metadataInfo, metadata.BindingType)
|
|
return
|
|
}
|
|
|
|
func (a *AWSSNS) Close() error {
|
|
if a.authProvider != nil {
|
|
return a.authProvider.Close()
|
|
}
|
|
return nil
|
|
}
|