terraform/builtin/providers/aws/resource_aws_elasticache_pa...

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package aws
import (
"bytes"
"fmt"
"log"
"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/elasticache"
)
func resourceAwsElasticacheParameterGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAwsElasticacheParameterGroupCreate,
Read: resourceAwsElasticacheParameterGroupRead,
Update: resourceAwsElasticacheParameterGroupUpdate,
Delete: resourceAwsElasticacheParameterGroupDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
ForceNew: true,
Required: true,
},
"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,
},
},
},
Set: resourceAwsElasticacheParameterHash,
},
},
}
}
func resourceAwsElasticacheParameterGroupCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).elasticacheconn
createOpts := elasticache.CreateCacheParameterGroupInput{
CacheParameterGroupName: aws.String(d.Get("name").(string)),
CacheParameterGroupFamily: aws.String(d.Get("family").(string)),
Description: aws.String(d.Get("description").(string)),
}
log.Printf("[DEBUG] Create Cache Parameter Group: %#v", createOpts)
_, err := conn.CreateCacheParameterGroup(&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.CacheParameterGroupName)
log.Printf("[INFO] Cache Parameter Group ID: %s", d.Id())
return resourceAwsElasticacheParameterGroupUpdate(d, meta)
}
func resourceAwsElasticacheParameterGroupRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).elasticacheconn
describeOpts := elasticache.DescribeCacheParameterGroupsInput{
CacheParameterGroupName: aws.String(d.Id()),
}
describeResp, err := conn.DescribeCacheParameterGroups(&describeOpts)
if err != nil {
return err
}
if len(describeResp.CacheParameterGroups) != 1 ||
*describeResp.CacheParameterGroups[0].CacheParameterGroupName != d.Id() {
return fmt.Errorf("Unable to find Parameter Group: %#v", describeResp.CacheParameterGroups)
}
d.Set("name", describeResp.CacheParameterGroups[0].CacheParameterGroupName)
d.Set("family", describeResp.CacheParameterGroups[0].CacheParameterGroupFamily)
d.Set("description", describeResp.CacheParameterGroups[0].Description)
// Only include user customized parameters as there's hundreds of system/default ones
describeParametersOpts := elasticache.DescribeCacheParametersInput{
CacheParameterGroupName: aws.String(d.Id()),
Source: aws.String("user"),
}
describeParametersResp, err := conn.DescribeCacheParameters(&describeParametersOpts)
if err != nil {
return err
}
d.Set("parameter", flattenElastiCacheParameters(describeParametersResp.Parameters))
return nil
}
func resourceAwsElasticacheParameterGroupUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).elasticacheconn
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)
// Expand the "parameter" set to aws-sdk-go compat []elasticacheconn.Parameter
parameters, err := expandElastiCacheParameters(ns.Difference(os).List())
if err != nil {
return err
}
if len(parameters) > 0 {
modifyOpts := elasticache.ModifyCacheParameterGroupInput{
CacheParameterGroupName: aws.String(d.Get("name").(string)),
ParameterNameValues: parameters,
}
log.Printf("[DEBUG] Modify Cache Parameter Group: %#v", modifyOpts)
_, err = conn.ModifyCacheParameterGroup(&modifyOpts)
if err != nil {
return fmt.Errorf("Error modifying Cache Parameter Group: %s", err)
}
}
d.SetPartial("parameter")
}
d.Partial(false)
return resourceAwsElasticacheParameterGroupRead(d, meta)
}
func resourceAwsElasticacheParameterGroupDelete(d *schema.ResourceData, meta interface{}) error {
stateConf := &resource.StateChangeConf{
Pending: []string{"pending"},
Target: "destroyed",
Refresh: resourceAwsElasticacheParameterGroupDeleteRefreshFunc(d, meta),
Timeout: 3 * time.Minute,
MinTimeout: 1 * time.Second,
}
_, err := stateConf.WaitForState()
return err
}
func resourceAwsElasticacheParameterGroupDeleteRefreshFunc(
d *schema.ResourceData,
meta interface{}) resource.StateRefreshFunc {
conn := meta.(*AWSClient).elasticacheconn
return func() (interface{}, string, error) {
deleteOpts := elasticache.DeleteCacheParameterGroupInput{
CacheParameterGroupName: aws.String(d.Id()),
}
if _, err := conn.DeleteCacheParameterGroup(&deleteOpts); err != nil {
elasticahceerr, ok := err.(awserr.Error)
if ok && elasticahceerr.Code() == "CacheParameterGroupNotFoundFault" {
d.SetId("")
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return d, "error", err
}
return d, "error", err
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}
return d, "destroyed", nil
}
}
func resourceAwsElasticacheParameterHash(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["name"].(string)))
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buf.WriteString(fmt.Sprintf("%s-", m["value"].(string)))
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return hashcode.String(buf.String())
}