Add aws_s3_bucket_cors_configuration resource (#12141)

* docs: document S3 CORS configuration resource

* r/s3_bucket_cors_configuration: CR updates

* r/s3_bucket_cors_configuration: update ID methods to generic ones; docs formatting

* correct error message

Co-authored-by: Angie Pinilla <angie@hashicorp.com>

.changelog/12141.txt

@@ -0,0 +1,3 @@
+```release-note:new-resource
+aws_s3_bucket_cors_configuration
+```

internal/provider/provider.go

@@ -1588,6 +1588,7 @@ func Provider() *schema.Provider {
 
 			"aws_s3_bucket":                                   s3.ResourceBucket(),
 			"aws_s3_bucket_analytics_configuration":           s3.ResourceBucketAnalyticsConfiguration(),
+			"aws_s3_bucket_cors_configuration":                s3.ResourceBucketCorsConfiguration(),
 			"aws_s3_bucket_intelligent_tiering_configuration": s3.ResourceBucketIntelligentTieringConfiguration(),
 			"aws_s3_bucket_inventory":                         s3.ResourceBucketInventory(),
 			"aws_s3_bucket_metric":                            s3.ResourceBucketMetric(),

internal/service/s3/bucket_cors_configuration.go

@@ -0,0 +1,301 @@
+package s3
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/s3"
+	"github.com/hashicorp/aws-sdk-go-base/tfawserr"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
+	"github.com/hashicorp/terraform-provider-aws/internal/conns"
+	"github.com/hashicorp/terraform-provider-aws/internal/flex"
+	"github.com/hashicorp/terraform-provider-aws/internal/verify"
+)
+
+func ResourceBucketCorsConfiguration() *schema.Resource {
+	return &schema.Resource{
+		CreateContext: resourceBucketCorsConfigurationCreate,
+		ReadContext:   resourceBucketCorsConfigurationRead,
+		UpdateContext: resourceBucketCorsConfigurationUpdate,
+		DeleteContext: resourceBucketCorsConfigurationDelete,
+		Importer: &schema.ResourceImporter{
+			StateContext: schema.ImportStatePassthroughContext,
+		},
+
+		Schema: map[string]*schema.Schema{
+			"bucket": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ForceNew:     true,
+				ValidateFunc: validation.StringLenBetween(1, 63),
+			},
+			"expected_bucket_owner": {
+				Type:         schema.TypeString,
+				Optional:     true,
+				ForceNew:     true,
+				ValidateFunc: verify.ValidAccountID,
+			},
+			"cors_rule": {
+				Type:     schema.TypeSet,
+				Required: true,
+				MaxItems: 100,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"allowed_headers": {
+							Type:     schema.TypeSet,
+							Optional: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"allowed_methods": {
+							Type:     schema.TypeSet,
+							Required: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"allowed_origins": {
+							Type:     schema.TypeSet,
+							Required: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"expose_headers": {
+							Type:     schema.TypeSet,
+							Optional: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"id": {
+							Type:         schema.TypeString,
+							Optional:     true,
+							ValidateFunc: validation.StringLenBetween(0, 255),
+						},
+						"max_age_seconds": {
+							Type:     schema.TypeInt,
+							Optional: true,
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+func resourceBucketCorsConfigurationCreate(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	conn := meta.(*conns.AWSClient).S3Conn
+
+	bucket := d.Get("bucket").(string)
+	expectedBucketOwner := d.Get("expected_bucket_owner").(string)
+
+	input := &s3.PutBucketCorsInput{
+		Bucket: aws.String(bucket),
+		CORSConfiguration: &s3.CORSConfiguration{
+			CORSRules: expandBucketCorsConfigurationCorsRules(d.Get("cors_rule").(*schema.Set).List()),
+		},
+	}
+
+	if expectedBucketOwner != "" {
+		input.ExpectedBucketOwner = aws.String(expectedBucketOwner)
+	}
+
+	_, err := verify.RetryOnAWSCode(s3.ErrCodeNoSuchBucket, func() (interface{}, error) {
+		return conn.PutBucketCorsWithContext(ctx, input)
+	})
+
+	if err != nil {
+		return diag.FromErr(fmt.Errorf("error creating S3 bucket (%s) CORS configuration: %w", bucket, err))
+	}
+
+	d.SetId(CreateResourceID(bucket, expectedBucketOwner))
+
+	return resourceBucketCorsConfigurationRead(ctx, d, meta)
+}
+
+func resourceBucketCorsConfigurationRead(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	conn := meta.(*conns.AWSClient).S3Conn
+
+	bucket, expectedBucketOwner, err := ParseResourceID(d.Id())
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	input := &s3.GetBucketCorsInput{
+		Bucket: aws.String(bucket),
+	}
+
+	if expectedBucketOwner != "" {
+		input.ExpectedBucketOwner = aws.String(expectedBucketOwner)
+	}
+
+	output, err := conn.GetBucketCorsWithContext(ctx, input)
+
+	if !d.IsNewResource() && tfawserr.ErrCodeEquals(err, s3.ErrCodeNoSuchBucket, ErrCodeNoSuchCORSConfiguration) {
+		log.Printf("[WARN] S3 Bucket CORS Configuration (%s) not found, removing from state", d.Id())
+		d.SetId("")
+		return nil
+	}
+
+	if err != nil {
+		return diag.FromErr(fmt.Errorf("error reading S3 bucket CORS configuration (%s): %w", d.Id(), err))
+	}
+
+	if output == nil {
+		if d.IsNewResource() {
+			return diag.FromErr(fmt.Errorf("error reading S3 bucket CORS configuration (%s): empty output", d.Id()))
+		}
+		log.Printf("[WARN] S3 Bucket CORS Configuration (%s) not found, removing from state", d.Id())
+		d.SetId("")
+		return nil
+	}
+
+	d.Set("bucket", bucket)
+	d.Set("expected_bucket_owner", expectedBucketOwner)
+
+	if err := d.Set("cors_rule", flattenBucketCorsConfigurationCorsRules(output.CORSRules)); err != nil {
+		return diag.FromErr(fmt.Errorf("error setting cors_rule: %w", err))
+	}
+
+	return nil
+}
+
+func resourceBucketCorsConfigurationUpdate(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	conn := meta.(*conns.AWSClient).S3Conn
+
+	bucket, expectedBucketOwner, err := ParseResourceID(d.Id())
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	input := &s3.PutBucketCorsInput{
+		Bucket: aws.String(bucket),
+		CORSConfiguration: &s3.CORSConfiguration{
+			CORSRules: expandBucketCorsConfigurationCorsRules(d.Get("cors_rule").(*schema.Set).List()),
+		},
+	}
+
+	if expectedBucketOwner != "" {
+		input.ExpectedBucketOwner = aws.String(expectedBucketOwner)
+	}
+
+	_, err = conn.PutBucketCorsWithContext(ctx, input)
+
+	if err != nil {
+		return diag.FromErr(fmt.Errorf("error updating S3 bucket CORS configuration (%s): %w", d.Id(), err))
+	}
+
+	return resourceBucketCorsConfigurationRead(ctx, d, meta)
+}
+
+func resourceBucketCorsConfigurationDelete(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	conn := meta.(*conns.AWSClient).S3Conn
+
+	bucket, expectedBucketOwner, err := ParseResourceID(d.Id())
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	input := &s3.DeleteBucketCorsInput{
+		Bucket: aws.String(bucket),
+	}
+
+	if expectedBucketOwner != "" {
+		input.ExpectedBucketOwner = aws.String(expectedBucketOwner)
+	}
+
+	_, err = conn.DeleteBucketCorsWithContext(ctx, input)
+
+	if tfawserr.ErrCodeEquals(err, s3.ErrCodeNoSuchBucket) {
+		return nil
+	}
+
+	if err != nil {
+		return diag.FromErr(fmt.Errorf("error deleting S3 bucket CORS configuration (%s): %w", d.Id(), err))
+	}
+
+	return nil
+}
+
+func expandBucketCorsConfigurationCorsRules(l []interface{}) []*s3.CORSRule {
+	if len(l) == 0 {
+		return nil
+	}
+
+	var rules []*s3.CORSRule
+
+	for _, tfMapRaw := range l {
+		tfMap, ok := tfMapRaw.(map[string]interface{})
+		if !ok {
+			continue
+		}
+
+		rule := &s3.CORSRule{}
+
+		if v, ok := tfMap["allowed_headers"].(*schema.Set); ok && v.Len() > 0 {
+			rule.AllowedHeaders = flex.ExpandStringSet(v)
+		}
+
+		if v, ok := tfMap["allowed_methods"].(*schema.Set); ok && v.Len() > 0 {
+			rule.AllowedMethods = flex.ExpandStringSet(v)
+		}
+
+		if v, ok := tfMap["allowed_origins"].(*schema.Set); ok && v.Len() > 0 {
+			rule.AllowedOrigins = flex.ExpandStringSet(v)
+		}
+
+		if v, ok := tfMap["expose_headers"].(*schema.Set); ok && v.Len() > 0 {
+			rule.ExposeHeaders = flex.ExpandStringSet(v)
+		}
+
+		if v, ok := tfMap["id"].(string); ok && v != "" {
+			rule.ID = aws.String(v)
+		}
+
+		if v, ok := tfMap["max_age_seconds"].(int); ok {
+			rule.MaxAgeSeconds = aws.Int64(int64(v))
+		}
+
+		rules = append(rules, rule)
+	}
+
+	return rules
+}
+
+func flattenBucketCorsConfigurationCorsRules(rules []*s3.CORSRule) []interface{} {
+	var results []interface{}
+
+	for _, rule := range rules {
+		if rule == nil {
+			continue
+		}
+
+		m := make(map[string]interface{})
+
+		if len(rule.AllowedHeaders) > 0 {
+			m["allowed_headers"] = flex.FlattenStringSet(rule.AllowedHeaders)
+		}
+
+		if len(rule.AllowedMethods) > 0 {
+			m["allowed_methods"] = flex.FlattenStringSet(rule.AllowedMethods)
+		}
+
+		if len(rule.AllowedOrigins) > 0 {
+			m["allowed_origins"] = flex.FlattenStringSet(rule.AllowedOrigins)
+		}
+
+		if len(rule.ExposeHeaders) > 0 {
+			m["expose_headers"] = flex.FlattenStringSet(rule.ExposeHeaders)
+		}
+
+		if rule.ID != nil {
+			m["id"] = aws.StringValue(rule.ID)
+		}
+
+		if rule.MaxAgeSeconds != nil {
+			m["max_age_seconds"] = aws.Int64Value(rule.MaxAgeSeconds)
+		}
+
+		results = append(results, m)
+	}
+
+	return results
+}