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data_source_aws_availability_zones.go
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data_source_aws_availability_zones.go
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package aws
import (
"fmt"
"log"
"sort"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/terraform/helper/schema"
)
func dataSourceAwsAvailabilityZones() *schema.Resource {
return &schema.Resource{
Read: dataSourceAwsAvailabilityZonesRead,
Schema: map[string]*schema.Schema{
"names": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"state": {
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateStateType,
},
},
}
}
func dataSourceAwsAvailabilityZonesRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
log.Printf("[DEBUG] Reading Availability Zones.")
d.SetId(time.Now().UTC().String())
request := &ec2.DescribeAvailabilityZonesInput{}
if v, ok := d.GetOk("state"); ok {
request.Filters = []*ec2.Filter{
{
Name: aws.String("state"),
Values: []*string{aws.String(v.(string))},
},
}
}
log.Printf("[DEBUG] Reading Availability Zones: %s", request)
resp, err := conn.DescribeAvailabilityZones(request)
if err != nil {
return fmt.Errorf("Error fetching Availability Zones: %s", err)
}
raw := make([]string, len(resp.AvailabilityZones))
for i, v := range resp.AvailabilityZones {
raw[i] = *v.ZoneName
}
sort.Strings(raw)
if err := d.Set("names", raw); err != nil {
return fmt.Errorf("[WARN] Error setting Availability Zones: %s", err)
}
return nil
}
func validateStateType(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
validState := map[string]bool{
"available": true,
"information": true,
"impaired": true,
"unavailable": true,
}
if !validState[value] {
errors = append(errors, fmt.Errorf(
"%q contains an invalid Availability Zone state %q. Valid states are: %q, %q, %q and %q.",
k, value, "available", "information", "impaired", "unavailable"))
}
return
}