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data_source_aws_sns.go
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data_source_aws_sns.go
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package aws
import (
"fmt"
"log"
"regexp"
"time"
"github.com/aws/aws-sdk-go/service/sns"
"github.com/hashicorp/terraform/helper/schema"
)
func dataSourceAwsSnsTopic() *schema.Resource {
return &schema.Resource{
Read: dataSourceAwsSnsTopicsRead,
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Required: true,
ValidateFunc: func(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
validNamePattern := "^[A-Za-z0-9_-]+$"
validName, nameMatchErr := regexp.MatchString(validNamePattern, value)
if !validName || nameMatchErr != nil {
errors = append(errors, fmt.Errorf(
"%q must match regex '%v'", k, validNamePattern))
}
return
},
},
"arn": {
Type: schema.TypeString,
Computed: true,
},
},
}
}
func dataSourceAwsSnsTopicsRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).snsconn
params := &sns.ListTopicsInput{}
target := d.Get("name")
var arns []string
log.Printf("[DEBUG] Reading SNS Topic: %s", params)
err := conn.ListTopicsPages(params, func(page *sns.ListTopicsOutput, lastPage bool) bool {
for _, topic := range page.Topics {
topicPattern := fmt.Sprintf(".*:%v$", target)
matched, regexpErr := regexp.MatchString(topicPattern, *topic.TopicArn)
if matched && regexpErr == nil {
arns = append(arns, *topic.TopicArn)
}
}
return true
})
if err != nil {
return fmt.Errorf("Error describing topics: %s", err)
}
if len(arns) == 0 {
return fmt.Errorf("No topic with name %q found in this region.", target)
}
if len(arns) > 1 {
return fmt.Errorf("Multiple topics with name %q found in this region.", target)
}
d.SetId(time.Now().UTC().String())
d.Set("arn", arns[0])
return nil
}