Merge pull request #2276 from SamClinckspoor/resource-aws-elasticache…

…-parameter-group

provider/aws elasticache parameter group

builtin/providers/aws/provider.go

@@ -100,6 +100,7 @@ func Provider() terraform.ResourceProvider {
  "aws_ecs_task_definition": resourceAwsEcsTaskDefinition(),
  "aws_eip": resourceAwsEip(),
  "aws_elasticache_cluster": resourceAwsElasticacheCluster(),
+ "aws_elasticache_parameter_group": resourceAwsElasticacheParameterGroup(),
  "aws_elasticache_security_group": resourceAwsElasticacheSecurityGroup(),
  "aws_elasticache_subnet_group": resourceAwsElasticacheSubnetGroup(),
  "aws_elb": resourceAwsElb(),

builtin/providers/aws/resource_aws_elasticache_parameter_group.go

@@ -0,0 +1,211 @@
+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("")
+ return d, "error", err
+ }
+ return d, "error", err
+ }
+ 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)))
+ buf.WriteString(fmt.Sprintf("%s-", m["value"].(string)))
+
+ return hashcode.String(buf.String())
+}