forked from hashicorp/terraform-provider-aws
/
data_source_aws_instances.go
129 lines (112 loc) · 3.29 KB
/
data_source_aws_instances.go
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package aws
import (
"fmt"
"log"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/helper/validation"
)
func dataSourceAwsInstances() *schema.Resource {
return &schema.Resource{
Read: dataSourceAwsInstancesRead,
Schema: map[string]*schema.Schema{
"filter": dataSourceFiltersSchema(),
"instance_tags": tagsSchemaComputed(),
"instance_state_names": {
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeString,
ValidateFunc: validation.StringInSlice([]string{
ec2.InstanceStateNamePending,
ec2.InstanceStateNameRunning,
ec2.InstanceStateNameShuttingDown,
ec2.InstanceStateNameStopped,
ec2.InstanceStateNameStopping,
ec2.InstanceStateNameTerminated,
}, false),
},
},
"ids": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"private_ips": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"public_ips": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
},
}
}
func dataSourceAwsInstancesRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
filters, filtersOk := d.GetOk("filter")
tags, tagsOk := d.GetOk("instance_tags")
if !filtersOk && !tagsOk {
return fmt.Errorf("One of filters or instance_tags must be assigned")
}
instanceStateNames := []*string{aws.String(ec2.InstanceStateNameRunning)}
if v, ok := d.GetOk("instance_state_names"); ok && len(v.(*schema.Set).List()) > 0 {
instanceStateNames = expandStringSet(v.(*schema.Set))
}
params := &ec2.DescribeInstancesInput{
Filters: []*ec2.Filter{
{
Name: aws.String("instance-state-name"),
Values: instanceStateNames,
},
},
}
if filtersOk {
params.Filters = append(params.Filters,
buildAwsDataSourceFilters(filters.(*schema.Set))...)
}
if tagsOk {
params.Filters = append(params.Filters, buildEC2TagFilterList(
tagsFromMap(tags.(map[string]interface{})),
)...)
}
log.Printf("[DEBUG] Reading EC2 instances: %s", params)
var instanceIds, privateIps, publicIps []string
err := conn.DescribeInstancesPages(params, func(resp *ec2.DescribeInstancesOutput, isLast bool) bool {
for _, res := range resp.Reservations {
for _, instance := range res.Instances {
instanceIds = append(instanceIds, *instance.InstanceId)
if instance.PrivateIpAddress != nil {
privateIps = append(privateIps, *instance.PrivateIpAddress)
}
if instance.PublicIpAddress != nil {
publicIps = append(publicIps, *instance.PublicIpAddress)
}
}
}
return !isLast
})
if err != nil {
return err
}
if len(instanceIds) < 1 {
return fmt.Errorf("Your query returned no results. Please change your search criteria and try again.")
}
log.Printf("[DEBUG] Found %d instances via given filter", len(instanceIds))
d.SetId(resource.UniqueId())
err = d.Set("ids", instanceIds)
if err != nil {
return err
}
err = d.Set("private_ips", privateIps)
if err != nil {
return err
}
err = d.Set("public_ips", publicIps)
return err
}