forked from hashicorp/terraform-provider-aws
/
resource_aws_cloudwatch_log_group.go
266 lines (224 loc) · 6.83 KB
/
resource_aws_cloudwatch_log_group.go
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package aws
import (
"fmt"
"log"
"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/cloudwatchlogs"
)
func resourceAwsCloudWatchLogGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAwsCloudWatchLogGroupCreate,
Read: resourceAwsCloudWatchLogGroupRead,
Update: resourceAwsCloudWatchLogGroupUpdate,
Delete: resourceAwsCloudWatchLogGroupDelete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
ConflictsWith: []string{"name_prefix"},
ValidateFunc: validateLogGroupName,
},
"name_prefix": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ValidateFunc: validateLogGroupNamePrefix,
},
"retention_in_days": {
Type: schema.TypeInt,
Optional: true,
Default: 0,
},
"kms_key_id": {
Type: schema.TypeString,
Optional: true,
},
"arn": {
Type: schema.TypeString,
Computed: true,
},
"tags": tagsSchema(),
},
}
}
func resourceAwsCloudWatchLogGroupCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
var logGroupName string
if v, ok := d.GetOk("name"); ok {
logGroupName = v.(string)
} else if v, ok := d.GetOk("name_prefix"); ok {
logGroupName = resource.PrefixedUniqueId(v.(string))
} else {
logGroupName = resource.UniqueId()
}
log.Printf("[DEBUG] Creating CloudWatch Log Group: %s", logGroupName)
params := &cloudwatchlogs.CreateLogGroupInput{
LogGroupName: aws.String(logGroupName),
}
if v, ok := d.GetOk("kms_key_id"); ok {
params.KmsKeyId = aws.String(v.(string))
}
_, err := conn.CreateLogGroup(params)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "ResourceAlreadyExistsException" {
return fmt.Errorf("Creating CloudWatch Log Group failed: %s: The CloudWatch Log Group '%s' already exists.", err, d.Get("name").(string))
}
return fmt.Errorf("Creating CloudWatch Log Group failed: %s '%s'", err, d.Get("name"))
}
d.SetId(logGroupName)
log.Println("[INFO] CloudWatch Log Group created")
return resourceAwsCloudWatchLogGroupUpdate(d, meta)
}
func resourceAwsCloudWatchLogGroupRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
log.Printf("[DEBUG] Reading CloudWatch Log Group: %q", d.Get("name").(string))
lg, err := lookupCloudWatchLogGroup(conn, d.Id())
if err != nil {
return err
}
if lg == nil {
log.Printf("[DEBUG] CloudWatch Group %q Not Found", d.Id())
d.SetId("")
return nil
}
log.Printf("[DEBUG] Found Log Group: %#v", *lg)
d.Set("arn", lg.Arn)
d.Set("name", lg.LogGroupName)
d.Set("kms_key_id", lg.KmsKeyId)
d.Set("retention_in_days", lg.RetentionInDays)
tags := make(map[string]string)
tagsOutput, err := conn.ListTagsLogGroup(&cloudwatchlogs.ListTagsLogGroupInput{
LogGroupName: aws.String(d.Id()),
})
if err != nil {
return fmt.Errorf("error listing CloudWatch Logs Group %q tags: %s", d.Id(), err)
}
if tagsOutput != nil {
tags = aws.StringValueMap(tagsOutput.Tags)
}
d.Set("tags", tags)
return nil
}
func lookupCloudWatchLogGroup(conn *cloudwatchlogs.CloudWatchLogs, name string) (*cloudwatchlogs.LogGroup, error) {
input := &cloudwatchlogs.DescribeLogGroupsInput{
LogGroupNamePrefix: aws.String(name),
}
var logGroup *cloudwatchlogs.LogGroup
err := conn.DescribeLogGroupsPages(input, func(page *cloudwatchlogs.DescribeLogGroupsOutput, lastPage bool) bool {
for _, lg := range page.LogGroups {
if aws.StringValue(lg.LogGroupName) == name {
logGroup = lg
return false
}
}
return !lastPage
})
if err != nil {
return nil, err
}
return logGroup, nil
}
func resourceAwsCloudWatchLogGroupUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
name := d.Id()
log.Printf("[DEBUG] Updating CloudWatch Log Group: %q", name)
if d.HasChange("retention_in_days") {
var err error
if v, ok := d.GetOk("retention_in_days"); ok {
input := cloudwatchlogs.PutRetentionPolicyInput{
LogGroupName: aws.String(name),
RetentionInDays: aws.Int64(int64(v.(int))),
}
log.Printf("[DEBUG] Setting retention for CloudWatch Log Group: %q: %s", name, input)
_, err = conn.PutRetentionPolicy(&input)
} else {
log.Printf("[DEBUG] Deleting retention for CloudWatch Log Group: %q", name)
_, err = conn.DeleteRetentionPolicy(&cloudwatchlogs.DeleteRetentionPolicyInput{
LogGroupName: aws.String(name),
})
}
if err != nil {
return err
}
}
if d.HasChange("tags") {
oraw, nraw := d.GetChange("tags")
o := oraw.(map[string]interface{})
n := nraw.(map[string]interface{})
create, remove := diffCloudWatchTags(o, n)
if len(remove) > 0 {
log.Printf("[DEBUG] Removing tags from %s", name)
_, err := conn.UntagLogGroup(&cloudwatchlogs.UntagLogGroupInput{
LogGroupName: aws.String(name),
Tags: remove,
})
if err != nil {
return err
}
}
if len(create) > 0 {
log.Printf("[DEBUG] Creating tags on %s", name)
_, err := conn.TagLogGroup(&cloudwatchlogs.TagLogGroupInput{
LogGroupName: aws.String(name),
Tags: create,
})
if err != nil {
return err
}
}
}
if d.HasChange("kms_key_id") && !d.IsNewResource() {
_, newKey := d.GetChange("kms_key_id")
if newKey.(string) == "" {
_, err := conn.DisassociateKmsKey(&cloudwatchlogs.DisassociateKmsKeyInput{
LogGroupName: aws.String(name),
})
if err != nil {
return err
}
} else {
_, err := conn.AssociateKmsKey(&cloudwatchlogs.AssociateKmsKeyInput{
LogGroupName: aws.String(name),
KmsKeyId: aws.String(newKey.(string)),
})
if err != nil {
return err
}
}
}
return resourceAwsCloudWatchLogGroupRead(d, meta)
}
func diffCloudWatchTags(oldTags map[string]interface{}, newTags map[string]interface{}) (map[string]*string, []*string) {
create := make(map[string]*string)
for k, v := range newTags {
create[k] = aws.String(v.(string))
}
var remove []*string
for t := range oldTags {
_, ok := create[t]
if !ok {
remove = append(remove, aws.String(t))
}
}
return create, remove
}
func resourceAwsCloudWatchLogGroupDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
log.Printf("[INFO] Deleting CloudWatch Log Group: %s", d.Id())
_, err := conn.DeleteLogGroup(&cloudwatchlogs.DeleteLogGroupInput{
LogGroupName: aws.String(d.Get("name").(string)),
})
if err != nil {
return fmt.Errorf("Error deleting CloudWatch Log Group: %s", err)
}
log.Println("[INFO] CloudWatch Log Group deleted")
return nil
}