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region_data_source.go
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/
region_data_source.go
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package meta
import (
"fmt"
"strings"
"github.com/ATenderholt/rainbow-test/terraform/conns"
"github.com/aws/aws-sdk-go/aws/endpoints"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
)
func DataSourceRegion() *schema.Resource {
return &schema.Resource{
Read: dataSourceRegionRead,
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Optional: true,
Computed: true,
},
"endpoint": {
Type: schema.TypeString,
Optional: true,
Computed: true,
},
"description": {
Type: schema.TypeString,
Computed: true,
},
},
}
}
func dataSourceRegionRead(d *schema.ResourceData, meta interface{}) error {
providerRegion := meta.(*conns.AWSClient).Region
var region *endpoints.Region
if v, ok := d.GetOk("endpoint"); ok {
endpoint := v.(string)
matchingRegion, err := FindRegionByEndpoint(endpoint)
if err != nil {
return err
}
region = matchingRegion
}
if v, ok := d.GetOk("name"); ok {
name := v.(string)
matchingRegion, err := FindRegionByName(name)
if err != nil {
return err
}
if region != nil && region.ID() != matchingRegion.ID() {
return fmt.Errorf("multiple regions matched; use additional constraints to reduce matches to a single region")
}
region = matchingRegion
}
// Default to provider current region if no other filters matched
if region == nil {
matchingRegion, err := FindRegionByName(providerRegion)
if err != nil {
return err
}
region = matchingRegion
}
d.SetId(region.ID())
regionEndpointEc2, err := region.ResolveEndpoint(endpoints.Ec2ServiceID)
if err != nil {
return err
}
d.Set("endpoint", strings.TrimPrefix(regionEndpointEc2.URL, "https://"))
d.Set("name", region.ID())
d.Set("description", region.Description())
return nil
}
func FindRegionByEndpoint(endpoint string) (*endpoints.Region, error) {
for _, partition := range endpoints.DefaultPartitions() {
for _, region := range partition.Regions() {
regionEndpointEc2, err := region.ResolveEndpoint(endpoints.Ec2ServiceID)
if err != nil {
return nil, err
}
if strings.TrimPrefix(regionEndpointEc2.URL, "https://") == endpoint {
return ®ion, nil
}
}
}
return nil, fmt.Errorf("region not found for endpoint %q", endpoint)
}
func FindRegionByName(name string) (*endpoints.Region, error) {
for _, partition := range endpoints.DefaultPartitions() {
for _, region := range partition.Regions() {
if region.ID() == name {
return ®ion, nil
}
}
}
return nil, fmt.Errorf("region not found for name %q", name)
}