terraform/builtin/providers/aws/resource_aws_db_parameter_g...

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package aws
import (
"bytes"
"fmt"
"log"
"strings"
"time"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/aws/aws-sdk-go/service/rds"
)
func resourceAwsDbParameterGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAwsDbParameterGroupCreate,
Read: resourceAwsDbParameterGroupRead,
Update: resourceAwsDbParameterGroupUpdate,
Delete: resourceAwsDbParameterGroupDelete,
Schema: map[string]*schema.Schema{
"arn": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"name": &schema.Schema{
Type: schema.TypeString,
ForceNew: true,
Required: true,
ValidateFunc: validateDbParamGroupName,
},
"family": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"description": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"parameter": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
ForceNew: false,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"value": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"apply_method": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "immediate",
// this parameter is not actually state, but a
// meta-parameter describing how the RDS API call
// to modify the parameter group should be made.
// Future reads of the resource from AWS don't tell
// us what we used for apply_method previously, so
// by squashing state to an empty string we avoid
// needing to do an update for every future run.
StateFunc: func(interface{}) string { return "" },
},
},
},
Set: resourceAwsDbParameterHash,
},
"tags": tagsSchema(),
},
}
}
func resourceAwsDbParameterGroupCreate(d *schema.ResourceData, meta interface{}) error {
rdsconn := meta.(*AWSClient).rdsconn
tags := tagsFromMapRDS(d.Get("tags").(map[string]interface{}))
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createOpts := rds.CreateDBParameterGroupInput{
DBParameterGroupName: aws.String(d.Get("name").(string)),
DBParameterGroupFamily: aws.String(d.Get("family").(string)),
Description: aws.String(d.Get("description").(string)),
Tags: tags,
}
log.Printf("[DEBUG] Create DB Parameter Group: %#v", createOpts)
_, err := rdsconn.CreateDBParameterGroup(&createOpts)
if err != nil {
return fmt.Errorf("Error creating DB Parameter Group: %s", err)
}
d.Partial(true)
d.SetPartial("name")
d.SetPartial("family")
d.SetPartial("description")
d.Partial(false)
d.SetId(*createOpts.DBParameterGroupName)
log.Printf("[INFO] DB Parameter Group ID: %s", d.Id())
return resourceAwsDbParameterGroupUpdate(d, meta)
}
func resourceAwsDbParameterGroupRead(d *schema.ResourceData, meta interface{}) error {
rdsconn := meta.(*AWSClient).rdsconn
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describeOpts := rds.DescribeDBParameterGroupsInput{
DBParameterGroupName: aws.String(d.Id()),
}
describeResp, err := rdsconn.DescribeDBParameterGroups(&describeOpts)
if err != nil {
return err
}
if len(describeResp.DBParameterGroups) != 1 ||
*describeResp.DBParameterGroups[0].DBParameterGroupName != d.Id() {
return fmt.Errorf("Unable to find Parameter Group: %#v", describeResp.DBParameterGroups)
}
d.Set("name", describeResp.DBParameterGroups[0].DBParameterGroupName)
d.Set("family", describeResp.DBParameterGroups[0].DBParameterGroupFamily)
d.Set("description", describeResp.DBParameterGroups[0].Description)
// Only include user customized parameters as there's hundreds of system/default ones
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describeParametersOpts := rds.DescribeDBParametersInput{
DBParameterGroupName: aws.String(d.Id()),
Source: aws.String("user"),
}
describeParametersResp, err := rdsconn.DescribeDBParameters(&describeParametersOpts)
if err != nil {
return err
}
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d.Set("parameter", flattenParameters(describeParametersResp.Parameters))
paramGroup := describeResp.DBParameterGroups[0]
arn, err := buildRDSPGARN(d, meta)
if err != nil {
name := "<empty>"
if paramGroup.DBParameterGroupName != nil && *paramGroup.DBParameterGroupName != "" {
name = *paramGroup.DBParameterGroupName
}
log.Printf("[DEBUG] Error building ARN for DB Parameter Group, not setting Tags for Param Group %s", name)
} else {
d.Set("arn", arn)
resp, err := rdsconn.ListTagsForResource(&rds.ListTagsForResourceInput{
ResourceName: aws.String(arn),
})
if err != nil {
log.Printf("[DEBUG] Error retrieving tags for ARN: %s", arn)
}
var dt []*rds.Tag
if len(resp.TagList) > 0 {
dt = resp.TagList
}
d.Set("tags", tagsToMapRDS(dt))
}
return nil
}
func resourceAwsDbParameterGroupUpdate(d *schema.ResourceData, meta interface{}) error {
rdsconn := meta.(*AWSClient).rdsconn
d.Partial(true)
if d.HasChange("parameter") {
o, n := d.GetChange("parameter")
if o == nil {
o = new(schema.Set)
}
if n == nil {
n = new(schema.Set)
}
os := o.(*schema.Set)
ns := n.(*schema.Set)
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// Expand the "parameter" set to aws-sdk-go compat []rds.Parameter
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parameters, err := expandParameters(ns.Difference(os).List())
if err != nil {
return err
}
if len(parameters) > 0 {
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modifyOpts := rds.ModifyDBParameterGroupInput{
DBParameterGroupName: aws.String(d.Get("name").(string)),
Parameters: parameters,
}
log.Printf("[DEBUG] Modify DB Parameter Group: %s", modifyOpts)
_, err = rdsconn.ModifyDBParameterGroup(&modifyOpts)
if err != nil {
return fmt.Errorf("Error modifying DB Parameter Group: %s", err)
}
}
d.SetPartial("parameter")
}
if arn, err := buildRDSPGARN(d, meta); err == nil {
if err := setTagsRDS(rdsconn, d, arn); err != nil {
return err
} else {
d.SetPartial("tags")
}
}
d.Partial(false)
return resourceAwsDbParameterGroupRead(d, meta)
}
func resourceAwsDbParameterGroupDelete(d *schema.ResourceData, meta interface{}) error {
stateConf := &resource.StateChangeConf{
Pending: []string{"pending"},
Target: []string{"destroyed"},
Refresh: resourceAwsDbParameterGroupDeleteRefreshFunc(d, meta),
Timeout: 3 * time.Minute,
MinTimeout: 1 * time.Second,
}
_, err := stateConf.WaitForState()
return err
}
func resourceAwsDbParameterGroupDeleteRefreshFunc(
d *schema.ResourceData,
meta interface{}) resource.StateRefreshFunc {
rdsconn := meta.(*AWSClient).rdsconn
return func() (interface{}, string, error) {
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deleteOpts := rds.DeleteDBParameterGroupInput{
DBParameterGroupName: aws.String(d.Id()),
}
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if _, err := rdsconn.DeleteDBParameterGroup(&deleteOpts); err != nil {
rdserr, ok := err.(awserr.Error)
if !ok {
return d, "error", err
}
if rdserr.Code() != "DBParameterGroupNotFoundFault" {
return d, "error", err
}
}
return d, "destroyed", nil
}
}
func resourceAwsDbParameterHash(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["name"].(string)))
// Store the value as a lower case string, to match how we store them in flattenParameters
buf.WriteString(fmt.Sprintf("%s-", strings.ToLower(m["value"].(string))))
return hashcode.String(buf.String())
}
func buildRDSPGARN(d *schema.ResourceData, meta interface{}) (string, error) {
iamconn := meta.(*AWSClient).iamconn
region := meta.(*AWSClient).region
// An zero value GetUserInput{} defers to the currently logged in user
resp, err := iamconn.GetUser(&iam.GetUserInput{})
if err != nil {
return "", err
}
userARN := *resp.User.Arn
accountID := strings.Split(userARN, ":")[4]
arn := fmt.Sprintf("arn:aws:rds:%s:%s:pg:%s", region, accountID, d.Id())
return arn, nil
}