terraform/builtin/providers/aws/resource_aws_flow_log.go

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package aws
import (
"fmt"
"log"
"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awsutil"
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"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsFlowLog() *schema.Resource {
return &schema.Resource{
Create: resourceAwsLogFlowCreate,
Read: resourceAwsLogFlowRead,
Delete: resourceAwsLogFlowDelete,
Schema: map[string]*schema.Schema{
"iam_role_arn": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"log_group_name": &schema.Schema{
Type: schema.TypeString,
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Required: true,
ForceNew: true,
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},
"vpc_id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ConflictsWith: []string{"subnet_id", "eni_id"},
},
"subnet_id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ConflictsWith: []string{"eni_id", "vpc_id"},
},
"eni_id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ConflictsWith: []string{"subnet_id", "vpc_id"},
},
"traffic_type": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
},
}
}
func resourceAwsLogFlowCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
types := []struct {
ID string
Type string
}{
{ID: d.Get("vpc_id").(string), Type: "VPC"},
{ID: d.Get("subnet_id").(string), Type: "Subnet"},
{ID: d.Get("eni_id").(string), Type: "NetworkInterface"},
}
var resourceId string
var resourceType string
for _, t := range types {
if t.ID != "" {
resourceId = t.ID
resourceType = t.Type
break
}
}
if resourceId == "" || resourceType == "" {
return fmt.Errorf("Error: Flow Logs require either a VPC, Subnet, or ENI ID")
}
opts := &ec2.CreateFlowLogsInput{
DeliverLogsPermissionARN: aws.String(d.Get("iam_role_arn").(string)),
LogGroupName: aws.String(d.Get("log_group_name").(string)),
ResourceIDs: []*string{aws.String(resourceId)},
ResourceType: aws.String(resourceType),
TrafficType: aws.String(d.Get("traffic_type").(string)),
}
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log.Printf(
"[DEBUG] Flow Log Create configuration: %s", awsutil.StringValue(opts))
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resp, err := conn.CreateFlowLogs(opts)
if err != nil {
return fmt.Errorf("Error creating Flow Log for (%s), error: %s", resourceId, err)
}
if len(resp.FlowLogIDs) > 1 {
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return fmt.Errorf("Error: multiple Flow Logs created for (%s)", resourceId)
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}
d.SetId(*resp.FlowLogIDs[0])
return resourceAwsLogFlowRead(d, meta)
}
func resourceAwsLogFlowRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
opts := &ec2.DescribeFlowLogsInput{
FlowLogIDs: []*string{aws.String(d.Id())},
}
resp, err := conn.DescribeFlowLogs(opts)
if err != nil {
log.Printf("[WARN] Error describing Flow Logs for id (%s)", d.Id())
d.SetId("")
return nil
}
if len(resp.FlowLogs) == 0 {
log.Printf("[WARN] No Flow Logs found for id (%s)", d.Id())
d.SetId("")
return nil
}
fl := resp.FlowLogs[0]
d.Set("traffic_type", fl.TrafficType)
d.Set("log_group_name", fl.LogGroupName)
d.Set("iam_role_arn", fl.DeliverLogsPermissionARN)
return nil
}
func resourceAwsLogFlowDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
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log.Printf(
"[DEBUG] Flow Log Destroy: %s", d.Id())
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_, err := conn.DeleteFlowLogs(&ec2.DeleteFlowLogsInput{
FlowLogIDs: []*string{aws.String(d.Id())},
})
if err != nil {
return fmt.Errorf("[WARN] Error deleting Flow Log with ID (%s), error: %s", d.Id(), err)
}
return nil
}