Create data source for aws iam roles

.changelog/18585.txt

@@ -0,0 +1,3 @@
+```release-note:new-data-source
+aws_iam_roles
+```

aws/data_source_aws_iam_roles.go

@@ -0,0 +1,94 @@
+package aws
+
+import (
+	"fmt"
+	"regexp"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/iam"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
+)
+
+func dataSourceAwsIAMRoles() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceAwsIAMRolesRead,
+
+		Schema: map[string]*schema.Schema{
+			"arns": {
+				Type:     schema.TypeSet,
+				Computed: true,
+				Elem:     &schema.Schema{Type: schema.TypeString},
+			},
+			"name_regex": {
+				Type:         schema.TypeString,
+				Optional:     true,
+				ValidateFunc: validation.StringIsValidRegExp,
+			},
+			"names": {
+				Type:     schema.TypeSet,
+				Computed: true,
+				Elem:     &schema.Schema{Type: schema.TypeString},
+			},
+			"path_prefix": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+		},
+	}
+}
+
+func dataSourceAwsIAMRolesRead(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).iamconn
+
+	input := &iam.ListRolesInput{}
+
+	if v, ok := d.GetOk("path_prefix"); ok {
+		input.PathPrefix = aws.String(v.(string))
+	}
+
+	var results []*iam.Role
+
+	err := conn.ListRolesPages(input, func(page *iam.ListRolesOutput, lastPage bool) bool {
+		if page == nil {
+			return !lastPage
+		}
+
+		for _, role := range page.Roles {
+			if role == nil {
+				continue
+			}
+
+			if v, ok := d.GetOk("name_regex"); ok && !regexp.MustCompile(v.(string)).MatchString(aws.StringValue(role.RoleName)) {
+				continue
+			}
+
+			results = append(results, role)
+		}
+
+		return !lastPage
+	})
+
+	if err != nil {
+		return fmt.Errorf("error reading IAM roles: %w", err)
+	}
+
+	d.SetId(meta.(*AWSClient).region)
+
+	var arns, names []string
+
+	for _, r := range results {
+		arns = append(arns, aws.StringValue(r.Arn))
+		names = append(names, aws.StringValue(r.RoleName))
+	}
+
+	if err := d.Set("arns", arns); err != nil {
+		return fmt.Errorf("error setting arns: %w", err)
+	}
+
+	if err := d.Set("names", names); err != nil {
+		return fmt.Errorf("error setting names: %w", err)
+	}
+
+	return nil
+}

aws/data_source_aws_iam_roles_test.go

@@ -0,0 +1,228 @@
+package aws
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"testing"
+
+	"github.com/aws/aws-sdk-go/service/iam"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/acctest"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func TestAccAWSIAMRolesDataSource_basic(t *testing.T) {
+	dataSourceName := "data.aws_iam_roles.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:   func() { testAccPreCheck(t) },
+		ErrorCheck: testAccErrorCheck(t, iam.EndpointsID),
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSIAMRolesConfigDataSource_basic,
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestMatchResourceAttr(dataSourceName, "names.#", regexp.MustCompile("[^0].*$")),
+				),
+			},
+		},
+	})
+}
+
+func TestAccAWSIAMRolesDataSource_nameRegex(t *testing.T) {
+	rCount := strconv.Itoa(acctest.RandIntRange(1, 4))
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	dataSourceName := "data.aws_iam_roles.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:   func() { testAccPreCheck(t) },
+		ErrorCheck: testAccErrorCheck(t, iam.EndpointsID),
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSIAMRolesConfigDataSource_nameRegex(rCount, rName),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr(dataSourceName, "names.#", rCount),
+					resource.TestCheckResourceAttr(dataSourceName, "arns.#", rCount),
+				),
+			},
+		},
+	})
+}
+
+func TestAccAWSIAMRolesDataSource_pathPrefix(t *testing.T) {
+	rCount := strconv.Itoa(acctest.RandIntRange(1, 4))
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	rPathPrefix := acctest.RandomWithPrefix("tf-acc-path")
+	dataSourceName := "data.aws_iam_roles.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:   func() { testAccPreCheck(t) },
+		ErrorCheck: testAccErrorCheck(t, iam.EndpointsID),
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSIAMRolesConfigDataSource_pathPrefix(rCount, rName, rPathPrefix),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr(dataSourceName, "names.#", rCount),
+					resource.TestCheckResourceAttr(dataSourceName, "arns.#", rCount),
+				),
+			},
+		},
+	})
+}
+
+func TestAccAWSIAMRolesDataSource_nonExistentPathPrefix(t *testing.T) {
+	dataSourceName := "data.aws_iam_roles.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:   func() { testAccPreCheck(t) },
+		ErrorCheck: testAccErrorCheck(t, iam.EndpointsID),
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSIAMRolesConfigDataSource_nonExistentPathPrefix,
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr(dataSourceName, "arns.#", "0"),
+					resource.TestCheckResourceAttr(dataSourceName, "names.#", "0"),
+				),
+			},
+		},
+	})
+}
+
+func TestAccAWSIAMRolesDataSource_nameRegexAndPathPrefix(t *testing.T) {
+	rCount := strconv.Itoa(acctest.RandIntRange(1, 4))
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	rPathPrefix := acctest.RandomWithPrefix("tf-acc-path")
+	dataSourceName := "data.aws_iam_roles.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:   func() { testAccPreCheck(t) },
+		ErrorCheck: testAccErrorCheck(t, iam.EndpointsID),
+		Providers:  testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSIAMRolesConfigDataSource_nameRegexAndPathPrefix(rCount, rName, rPathPrefix, "0"),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr(dataSourceName, "names.#", "1"),
+					resource.TestCheckResourceAttr(dataSourceName, "arns.#", "1"),
+				),
+			},
+		},
+	})
+}
+
+const testAccAWSIAMRolesConfigDataSource_basic = `
+data "aws_iam_roles" "test" {}
+`
+
+func testAccAWSIAMRolesConfigDataSource_nameRegex(rCount, rName string) string {
+	return fmt.Sprintf(`
+data "aws_partition" "current" {}
+
+resource "aws_iam_role" "test" {
+  count = %[1]s
+  name  = "%[2]s-${count.index}-role"
+
+  assume_role_policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Action": "sts:AssumeRole",
+      "Principal": {
+        "Service": "ec2.${data.aws_partition.current.dns_suffix}"
+      },
+      "Effect": "Allow",
+      "Sid": ""
+    }
+  ]
+}
+EOF
+  tags = {
+    Seed = %[2]q
+  }
+}
+
+data "aws_iam_roles" "test" {
+  name_regex = "${aws_iam_role.test[0].tags["Seed"]}-.*-role"
+}
+`, rCount, rName)
+}
+
+func testAccAWSIAMRolesConfigDataSource_pathPrefix(rCount, rName, rPathPrefix string) string {
+	return fmt.Sprintf(`
+data "aws_partition" "current" {}
+
+resource "aws_iam_role" "test" {
+  count = %[1]s
+  name  = "%[2]s-${count.index}-role"
+
+  assume_role_policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Action": "sts:AssumeRole",
+      "Principal": {
+        "Service": "ec2.${data.aws_partition.current.dns_suffix}"
+      },
+      "Effect": "Allow",
+      "Sid": ""
+    }
+  ]
+}
+EOF
+
+  path = "/%[3]s/"
+}
+
+data "aws_iam_roles" "test" {
+  path_prefix = aws_iam_role.test[0].path
+}
+`, rCount, rName, rPathPrefix)
+}
+
+const testAccAWSIAMRolesConfigDataSource_nonExistentPathPrefix = `
+data "aws_iam_roles" "test" {
+  path_prefix = "/dne/path"
+}
+`
+
+func testAccAWSIAMRolesConfigDataSource_nameRegexAndPathPrefix(rCount, rName, rPathPrefix, rIndex string) string {
+	return fmt.Sprintf(`
+data "aws_partition" "current" {}
+
+resource "aws_iam_role" "test" {
+  count = %[1]s
+  name  = "%[2]s-${count.index}-role"
+
+  assume_role_policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Action": "sts:AssumeRole",
+      "Principal": {
+        "Service": "ec2.${data.aws_partition.current.dns_suffix}"
+      },
+      "Effect": "Allow",
+      "Sid": ""
+    }
+  ]
+}
+EOF
+
+  path = "/%[3]s/"
+  tags = {
+    Seed = %[2]q
+  }
+}
+
+data "aws_iam_roles" "test" {
+  name_regex  = "${aws_iam_role.test[0].tags["Seed"]}-%[4]s-role"
+  path_prefix = aws_iam_role.test[0].path
+}
+`, rCount, rName, rPathPrefix, rIndex)
+}

aws/provider.go

@@ -304,6 +304,7 @@ func Provider() *schema.Provider {
 			"aws_iam_policy":                                 dataSourceAwsIAMPolicy(),
 			"aws_iam_policy_document":                        dataSourceAwsIamPolicyDocument(),
 			"aws_iam_role":                                   dataSourceAwsIAMRole(),
+			"aws_iam_roles":                                  dataSourceAwsIAMRoles(),
 			"aws_iam_server_certificate":                     dataSourceAwsIAMServerCertificate(),
 			"aws_iam_session_context":                        dataSourceAwsIAMSessionContext(),
 			"aws_iam_user":                                   dataSourceAwsIAMUser(),