github.com/minamijoyo/terraform@v0.7.8-0.20161029001309-18b3736ba44b/builtin/providers/aws/resource_aws_db_parameter_group.go (about)

     1  package aws
     2  
     3  import (
     4  	"bytes"
     5  	"fmt"
     6  	"log"
     7  	"strings"
     8  	"time"
     9  
    10  	"github.com/hashicorp/terraform/helper/hashcode"
    11  	"github.com/hashicorp/terraform/helper/resource"
    12  	"github.com/hashicorp/terraform/helper/schema"
    13  
    14  	"github.com/aws/aws-sdk-go/aws"
    15  	"github.com/aws/aws-sdk-go/aws/awserr"
    16  	"github.com/aws/aws-sdk-go/service/rds"
    17  )
    18  
    19  func resourceAwsDbParameterGroup() *schema.Resource {
    20  	return &schema.Resource{
    21  		Create: resourceAwsDbParameterGroupCreate,
    22  		Read:   resourceAwsDbParameterGroupRead,
    23  		Update: resourceAwsDbParameterGroupUpdate,
    24  		Delete: resourceAwsDbParameterGroupDelete,
    25  		Importer: &schema.ResourceImporter{
    26  			State: schema.ImportStatePassthrough,
    27  		},
    28  
    29  		Schema: map[string]*schema.Schema{
    30  			"arn": &schema.Schema{
    31  				Type:     schema.TypeString,
    32  				Computed: true,
    33  			},
    34  			"name": &schema.Schema{
    35  				Type:         schema.TypeString,
    36  				ForceNew:     true,
    37  				Required:     true,
    38  				ValidateFunc: validateDbParamGroupName,
    39  			},
    40  			"family": &schema.Schema{
    41  				Type:     schema.TypeString,
    42  				Required: true,
    43  				ForceNew: true,
    44  			},
    45  			"description": &schema.Schema{
    46  				Type:     schema.TypeString,
    47  				Optional: true,
    48  				ForceNew: true,
    49  				Default:  "Managed by Terraform",
    50  			},
    51  			"parameter": &schema.Schema{
    52  				Type:     schema.TypeSet,
    53  				Optional: true,
    54  				ForceNew: false,
    55  				Elem: &schema.Resource{
    56  					Schema: map[string]*schema.Schema{
    57  						"name": &schema.Schema{
    58  							Type:     schema.TypeString,
    59  							Required: true,
    60  						},
    61  						"value": &schema.Schema{
    62  							Type:     schema.TypeString,
    63  							Required: true,
    64  						},
    65  						"apply_method": &schema.Schema{
    66  							Type:     schema.TypeString,
    67  							Optional: true,
    68  							Default:  "immediate",
    69  						},
    70  					},
    71  				},
    72  				Set: resourceAwsDbParameterHash,
    73  			},
    74  
    75  			"tags": tagsSchema(),
    76  		},
    77  	}
    78  }
    79  
    80  func resourceAwsDbParameterGroupCreate(d *schema.ResourceData, meta interface{}) error {
    81  	rdsconn := meta.(*AWSClient).rdsconn
    82  	tags := tagsFromMapRDS(d.Get("tags").(map[string]interface{}))
    83  
    84  	createOpts := rds.CreateDBParameterGroupInput{
    85  		DBParameterGroupName:   aws.String(d.Get("name").(string)),
    86  		DBParameterGroupFamily: aws.String(d.Get("family").(string)),
    87  		Description:            aws.String(d.Get("description").(string)),
    88  		Tags:                   tags,
    89  	}
    90  
    91  	log.Printf("[DEBUG] Create DB Parameter Group: %#v", createOpts)
    92  	_, err := rdsconn.CreateDBParameterGroup(&createOpts)
    93  	if err != nil {
    94  		return fmt.Errorf("Error creating DB Parameter Group: %s", err)
    95  	}
    96  
    97  	d.Partial(true)
    98  	d.SetPartial("name")
    99  	d.SetPartial("family")
   100  	d.SetPartial("description")
   101  	d.Partial(false)
   102  
   103  	d.SetId(*createOpts.DBParameterGroupName)
   104  	log.Printf("[INFO] DB Parameter Group ID: %s", d.Id())
   105  
   106  	return resourceAwsDbParameterGroupUpdate(d, meta)
   107  }
   108  
   109  func resourceAwsDbParameterGroupRead(d *schema.ResourceData, meta interface{}) error {
   110  	rdsconn := meta.(*AWSClient).rdsconn
   111  
   112  	describeOpts := rds.DescribeDBParameterGroupsInput{
   113  		DBParameterGroupName: aws.String(d.Id()),
   114  	}
   115  
   116  	describeResp, err := rdsconn.DescribeDBParameterGroups(&describeOpts)
   117  	if err != nil {
   118  		return err
   119  	}
   120  
   121  	if len(describeResp.DBParameterGroups) != 1 ||
   122  		*describeResp.DBParameterGroups[0].DBParameterGroupName != d.Id() {
   123  		return fmt.Errorf("Unable to find Parameter Group: %#v", describeResp.DBParameterGroups)
   124  	}
   125  
   126  	d.Set("name", describeResp.DBParameterGroups[0].DBParameterGroupName)
   127  	d.Set("family", describeResp.DBParameterGroups[0].DBParameterGroupFamily)
   128  	d.Set("description", describeResp.DBParameterGroups[0].Description)
   129  
   130  	// Only include user customized parameters as there's hundreds of system/default ones
   131  	describeParametersOpts := rds.DescribeDBParametersInput{
   132  		DBParameterGroupName: aws.String(d.Id()),
   133  		Source:               aws.String("user"),
   134  	}
   135  
   136  	describeParametersResp, err := rdsconn.DescribeDBParameters(&describeParametersOpts)
   137  	if err != nil {
   138  		return err
   139  	}
   140  
   141  	d.Set("parameter", flattenParameters(describeParametersResp.Parameters))
   142  
   143  	paramGroup := describeResp.DBParameterGroups[0]
   144  	arn, err := buildRDSPGARN(d.Id(), meta.(*AWSClient).partition, meta.(*AWSClient).accountid, meta.(*AWSClient).region)
   145  	if err != nil {
   146  		name := "<empty>"
   147  		if paramGroup.DBParameterGroupName != nil && *paramGroup.DBParameterGroupName != "" {
   148  			name = *paramGroup.DBParameterGroupName
   149  		}
   150  		log.Printf("[DEBUG] Error building ARN for DB Parameter Group, not setting Tags for Param Group %s", name)
   151  	} else {
   152  		d.Set("arn", arn)
   153  		resp, err := rdsconn.ListTagsForResource(&rds.ListTagsForResourceInput{
   154  			ResourceName: aws.String(arn),
   155  		})
   156  
   157  		if err != nil {
   158  			log.Printf("[DEBUG] Error retrieving tags for ARN: %s", arn)
   159  		}
   160  
   161  		var dt []*rds.Tag
   162  		if len(resp.TagList) > 0 {
   163  			dt = resp.TagList
   164  		}
   165  		d.Set("tags", tagsToMapRDS(dt))
   166  	}
   167  
   168  	return nil
   169  }
   170  
   171  func resourceAwsDbParameterGroupUpdate(d *schema.ResourceData, meta interface{}) error {
   172  	rdsconn := meta.(*AWSClient).rdsconn
   173  
   174  	d.Partial(true)
   175  
   176  	if d.HasChange("parameter") {
   177  		o, n := d.GetChange("parameter")
   178  		if o == nil {
   179  			o = new(schema.Set)
   180  		}
   181  		if n == nil {
   182  			n = new(schema.Set)
   183  		}
   184  
   185  		os := o.(*schema.Set)
   186  		ns := n.(*schema.Set)
   187  
   188  		// Expand the "parameter" set to aws-sdk-go compat []rds.Parameter
   189  		parameters, err := expandParameters(ns.Difference(os).List())
   190  		if err != nil {
   191  			return err
   192  		}
   193  
   194  		if len(parameters) > 0 {
   195  			// We can only modify 20 parameters at a time, so walk them until
   196  			// we've got them all.
   197  			maxParams := 20
   198  			for parameters != nil {
   199  				paramsToModify := make([]*rds.Parameter, 0)
   200  				if len(parameters) <= maxParams {
   201  					paramsToModify, parameters = parameters[:], nil
   202  				} else {
   203  					paramsToModify, parameters = parameters[:maxParams], parameters[maxParams:]
   204  				}
   205  				modifyOpts := rds.ModifyDBParameterGroupInput{
   206  					DBParameterGroupName: aws.String(d.Get("name").(string)),
   207  					Parameters:           paramsToModify,
   208  				}
   209  
   210  				log.Printf("[DEBUG] Modify DB Parameter Group: %s", modifyOpts)
   211  				_, err = rdsconn.ModifyDBParameterGroup(&modifyOpts)
   212  				if err != nil {
   213  					return fmt.Errorf("Error modifying DB Parameter Group: %s", err)
   214  				}
   215  			}
   216  			d.SetPartial("parameter")
   217  		}
   218  	}
   219  
   220  	if arn, err := buildRDSPGARN(d.Id(), meta.(*AWSClient).partition, meta.(*AWSClient).accountid, meta.(*AWSClient).region); err == nil {
   221  		if err := setTagsRDS(rdsconn, d, arn); err != nil {
   222  			return err
   223  		} else {
   224  			d.SetPartial("tags")
   225  		}
   226  	}
   227  
   228  	d.Partial(false)
   229  
   230  	return resourceAwsDbParameterGroupRead(d, meta)
   231  }
   232  
   233  func resourceAwsDbParameterGroupDelete(d *schema.ResourceData, meta interface{}) error {
   234  	stateConf := &resource.StateChangeConf{
   235  		Pending:    []string{"pending"},
   236  		Target:     []string{"destroyed"},
   237  		Refresh:    resourceAwsDbParameterGroupDeleteRefreshFunc(d, meta),
   238  		Timeout:    3 * time.Minute,
   239  		MinTimeout: 1 * time.Second,
   240  	}
   241  	_, err := stateConf.WaitForState()
   242  	return err
   243  }
   244  
   245  func resourceAwsDbParameterGroupDeleteRefreshFunc(
   246  	d *schema.ResourceData,
   247  	meta interface{}) resource.StateRefreshFunc {
   248  	rdsconn := meta.(*AWSClient).rdsconn
   249  
   250  	return func() (interface{}, string, error) {
   251  
   252  		deleteOpts := rds.DeleteDBParameterGroupInput{
   253  			DBParameterGroupName: aws.String(d.Id()),
   254  		}
   255  
   256  		if _, err := rdsconn.DeleteDBParameterGroup(&deleteOpts); err != nil {
   257  			rdserr, ok := err.(awserr.Error)
   258  			if !ok {
   259  				return d, "error", err
   260  			}
   261  
   262  			if rdserr.Code() != "DBParameterGroupNotFoundFault" {
   263  				return d, "error", err
   264  			}
   265  		}
   266  
   267  		return d, "destroyed", nil
   268  	}
   269  }
   270  
   271  func resourceAwsDbParameterHash(v interface{}) int {
   272  	var buf bytes.Buffer
   273  	m := v.(map[string]interface{})
   274  	buf.WriteString(fmt.Sprintf("%s-", m["name"].(string)))
   275  	// Store the value as a lower case string, to match how we store them in flattenParameters
   276  	buf.WriteString(fmt.Sprintf("%s-", strings.ToLower(m["value"].(string))))
   277  
   278  	return hashcode.String(buf.String())
   279  }
   280  
   281  func buildRDSPGARN(identifier, partition, accountid, region string) (string, error) {
   282  	if partition == "" {
   283  		return "", fmt.Errorf("Unable to construct RDS ARN because of missing AWS partition")
   284  	}
   285  	if accountid == "" {
   286  		return "", fmt.Errorf("Unable to construct RDS ARN because of missing AWS Account ID")
   287  	}
   288  	arn := fmt.Sprintf("arn:%s:rds:%s:%s:pg:%s", partition, region, accountid, identifier)
   289  	return arn, nil
   290  
   291  }