124 lines
3.0 KiB
Go
124 lines
3.0 KiB
Go
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package aws
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import (
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"fmt"
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"log"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/ec2"
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"github.com/hashicorp/terraform/helper/schema"
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)
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func dataSourceAwsSubnet() *schema.Resource {
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return &schema.Resource{
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Read: dataSourceAwsSubnetRead,
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Schema: map[string]*schema.Schema{
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"availability_zone": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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"cidr_block": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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"default_for_az": &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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Computed: true,
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},
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"filter": ec2CustomFiltersSchema(),
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"id": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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"state": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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"tags": tagsSchemaComputed(),
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"vpc_id": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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},
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}
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}
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func dataSourceAwsSubnetRead(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).ec2conn
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req := &ec2.DescribeSubnetsInput{}
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if id := d.Get("id"); id != "" {
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req.SubnetIds = []*string{aws.String(id.(string))}
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}
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// We specify default_for_az as boolean, but EC2 filters want
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// it to be serialized as a string. Note that setting it to
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// "false" here does not actually filter by it *not* being
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// the default, because Terraform can't distinguish between
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// "false" and "not set".
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defaultForAzStr := ""
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if d.Get("default_for_az").(bool) {
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defaultForAzStr = "true"
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}
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req.Filters = buildEC2AttributeFilterList(
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map[string]string{
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"availabilityZone": d.Get("availability_zone").(string),
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"cidrBlock": d.Get("cidr_block").(string),
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"defaultForAz": defaultForAzStr,
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"state": d.Get("state").(string),
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"vpc-id": d.Get("vpc_id").(string),
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},
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)
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req.Filters = append(req.Filters, buildEC2TagFilterList(
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tagsFromMap(d.Get("tags").(map[string]interface{})),
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)...)
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req.Filters = append(req.Filters, buildEC2CustomFilterList(
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d.Get("filter").(*schema.Set),
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)...)
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if len(req.Filters) == 0 {
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// Don't send an empty filters list; the EC2 API won't accept it.
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req.Filters = nil
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}
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log.Printf("[DEBUG] DescribeSubnets %s\n", req)
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resp, err := conn.DescribeSubnets(req)
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if err != nil {
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return err
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}
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if resp == nil || len(resp.Subnets) == 0 {
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return fmt.Errorf("no matching subnet found")
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}
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if len(resp.Subnets) > 1 {
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return fmt.Errorf("multiple subnets matched; use additional constraints to reduce matches to a single subnet")
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}
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subnet := resp.Subnets[0]
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d.SetId(*subnet.SubnetId)
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d.Set("id", subnet.SubnetId)
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d.Set("vpc_id", subnet.VpcId)
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d.Set("availability_zone", subnet.AvailabilityZone)
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d.Set("cidr_block", subnet.CidrBlock)
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d.Set("default_for_az", subnet.DefaultForAz)
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d.Set("state", subnet.State)
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d.Set("tags", tagsToMap(subnet.Tags))
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return nil
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}
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