/
sns.go
76 lines (60 loc) · 1.51 KB
/
sns.go
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package aws
import (
"context"
"fmt"
"github.com/aws/aws-sdk-go-v2/aws"
awsConfig "github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/sns"
"github.com/tdx/http2sns-vk/pkg/config"
)
//
type Publisher struct {
sns *sns.Client
}
//
func NewPublisher(cfg *config.Config) (*Publisher, error) {
var (
err error
awsCfg aws.Config
snsApiEndpoint = cfg.SnsApiEndpoint
)
if snsApiEndpoint == "" {
// default SNS endpoint
awsCfg, err = awsConfig.LoadDefaultConfig(context.Background(),
awsConfig.WithRegion(cfg.SnsRegion),
)
} else {
snsResolver := aws.EndpointResolverWithOptionsFunc(
func(service, reg string, opts ...interface{}) (aws.Endpoint, error) {
if service == sns.ServiceID && reg == cfg.SnsRegion {
return aws.Endpoint{
PartitionID: "aws",
URL: snsApiEndpoint,
SigningRegion: reg,
}, nil
}
return aws.Endpoint{}, fmt.Errorf("unknown endpoint requested")
})
awsCfg, err = awsConfig.LoadDefaultConfig(
context.Background(),
awsConfig.WithRegion(cfg.SnsRegion),
awsConfig.WithEndpointResolverWithOptions(snsResolver),
)
}
if err != nil {
return nil, fmt.Errorf("aws:NewPublisher() failed: %w", err)
}
p := &Publisher{
sns: sns.NewFromConfig(awsCfg),
}
return p, nil
}
//
func (p *Publisher) Publish(topic, message string) error {
params := &sns.PublishInput{
TopicArn: aws.String(topic),
Message: aws.String(message),
}
_, err := p.sns.Publish(context.Background(), params)
return err
}