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sns.go
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/
sns.go
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// Copyright 2019 The Terraformer 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 aws
import (
"context"
"fmt"
"log"
"strings"
"github.com/GoogleCloudPlatform/terraformer/terraformutils"
"github.com/aws/aws-sdk-go-v2/service/sns"
)
var snsAllowEmptyValues = []string{"tags."}
type SnsGenerator struct {
AWSService
}
// TF currently doesn't support email subscriptions + subscriptions with pending confirmations
func (g *SnsGenerator) isSupportedSubscription(protocol, subscriptionID string) bool {
return protocol != "email" && protocol != "email-json" && subscriptionID != "PendingConfirmation"
}
func (g *SnsGenerator) InitResources() error {
config, e := g.generateConfig()
if e != nil {
return e
}
svc := sns.NewFromConfig(config)
p := sns.NewListTopicsPaginator(svc, &sns.ListTopicsInput{})
for p.HasMorePages() {
page, err := p.NextPage(context.TODO())
if err != nil {
return err
}
for _, topic := range page.Topics {
arnParts := strings.Split(StringValue(topic.TopicArn), ":")
topicName := arnParts[len(arnParts)-1]
g.Resources = append(g.Resources, terraformutils.NewSimpleResource(
StringValue(topic.TopicArn),
topicName,
"aws_sns_topic",
"aws",
snsAllowEmptyValues,
))
topicSubsPage := sns.NewListSubscriptionsByTopicPaginator(svc, &sns.ListSubscriptionsByTopicInput{
TopicArn: topic.TopicArn,
})
for topicSubsPage.HasMorePages() {
topicSubsNextPage, err := topicSubsPage.NextPage(context.TODO())
if err != nil {
log.Println(err)
continue
}
for _, subscription := range topicSubsNextPage.Subscriptions {
subscriptionArnParts := strings.Split(StringValue(subscription.SubscriptionArn), ":")
subscriptionID := subscriptionArnParts[len(subscriptionArnParts)-1]
if g.isSupportedSubscription(StringValue(subscription.Protocol), subscriptionID) {
g.Resources = append(g.Resources, terraformutils.NewSimpleResource(
StringValue(subscription.SubscriptionArn),
"subscription-"+subscriptionID,
"aws_sns_topic_subscription",
"aws",
snsAllowEmptyValues,
))
}
}
}
}
}
return nil
}
// PostConvertHook for add policy json as heredoc
func (g *SnsGenerator) PostConvertHook() error {
for i, resource := range g.Resources {
if resource.InstanceInfo.Type == "aws_sns_topic" {
if val, ok := g.Resources[i].Item["policy"]; ok {
policy := g.escapeAwsInterpolation(val.(string))
g.Resources[i].Item["policy"] = fmt.Sprintf(`<<POLICY
%s
POLICY`, policy)
}
}
}
return nil
}