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{})) 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 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 describeParametersOpts := rds.DescribeDBParametersInput{ DBParameterGroupName: aws.String(d.Id()), Source: aws.String("user"), } describeParametersResp, err := rdsconn.DescribeDBParameters(&describeParametersOpts) if err != nil { return err } d.Set("parameter", flattenParameters(describeParametersResp.Parameters)) paramGroup := describeResp.DBParameterGroups[0] arn, err := buildRDSPGARN(d, meta) if err != nil { name := "" 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) // Expand the "parameter" set to aws-sdk-go compat []rds.Parameter parameters, err := expandParameters(ns.Difference(os).List()) if err != nil { return err } if len(parameters) > 0 { 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: "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) { deleteOpts := rds.DeleteDBParameterGroupInput{ DBParameterGroupName: aws.String(d.Id()), } 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 }