provider/aws: Add aws_availability_zones source

This commit adds a data source with a single list, `instance` for the
schema which gets populated with the availability zones to which an
account has access.
This commit is contained in:
James Nugent 2016-05-14 14:18:51 -04:00
parent 7a5641b894
commit 1ea727eb13
4 changed files with 104 additions and 0 deletions

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@ -0,0 +1,52 @@
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{
"instance": &schema.Schema{
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
},
}
}
func dataSourceAwsAvailabilityZonesRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
log.Printf("[DEBUG] Reading availability zones")
d.SetId(time.Now().UTC().String())
req := &ec2.DescribeAvailabilityZonesInput{DryRun: aws.Bool(false)}
azresp, err := conn.DescribeAvailabilityZones(req)
if err != nil {
return fmt.Errorf("Error listing availability zones: %s", err)
}
raw := make([]string, len(azresp.AvailabilityZones))
for i, v := range azresp.AvailabilityZones {
raw[i] = *v.ZoneName
}
sort.Strings(raw)
if err := d.Set("instance", raw); err != nil {
return fmt.Errorf("[WARN] Error setting availability zones")
}
return nil
}

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@ -110,6 +110,10 @@ func Provider() terraform.ResourceProvider {
},
},
DataSourcesMap: map[string]*schema.Resource{
"aws_availability_zones": dataSourceAwsAvailabilityZones(),
},
ResourcesMap: map[string]*schema.Resource{
"aws_ami": resourceAwsAmi(),
"aws_ami_copy": resourceAwsAmiCopy(),

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@ -0,0 +1,39 @@
---
layout: "aws"
page_title: "AWS: aws_availability_zones"
sidebar_current: "docs-aws-datasource-availability-zones"
description: |-
Provides a list of availability zones which can be used by an AWS account
---
# aws\_availability\_zones
The Availability Zones data source allows access to the list of AWS
Availability Zones which can be accessed by an AWS account within the region
configured in the provider.
## Example Usage
```
# Declare the data source
data "aws_availability_zones" "zones" {}
# Create a subnet in each availability zone
resource "aws_subnet" "public" {
count = "${length(data.aws_availability_zones.zones.instance)}"
availability_zone = "${data.aws_availability_zones.zones.instance[count.index]}"
# Other properties...
}
```
## Argument Reference
There are no arguments for this data source.
## Attributes Reference
The following attributes are exported:
* `instance` - A list of the availability zone names available to the account.

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@ -10,6 +10,15 @@
<a href="/docs/providers/aws/index.html">AWS Provider</a>
</li>
<li<%= sidebar_current(/^docs-aws-datasource/) %>
<a href="#">Data Sources</a>
<ul class="nav nav-visible">
<li<%= sidebar_current("docs-aws-datasource-availability-zones") %>>
<a href="/docs/providers/aws/d/availability_zones.html">aws_availability_zones</a>
</li>
</ul>
</li>
<li<%= sidebar_current(/^docs-aws-resource-api-gateway/) %>>
<a href="#">API Gateway Resources</a>
<ul class="nav nav-visible">