New resource: aws_lambda_invocation

aws/provider.go

@@ -781,6 +781,7 @@ func Provider() *schema.Provider {
 			"aws_lambda_event_source_mapping":                         resourceAwsLambdaEventSourceMapping(),
 			"aws_lambda_function_event_invoke_config":                 resourceAwsLambdaFunctionEventInvokeConfig(),
 			"aws_lambda_function":                                     resourceAwsLambdaFunction(),
+			"aws_lambda_invocation":                                   resourceAwsLambdaInvocation(),
 			"aws_lambda_layer_version":                                resourceAwsLambdaLayerVersion(),
 			"aws_lambda_permission":                                   resourceAwsLambdaPermission(),
 			"aws_lambda_provisioned_concurrency_config":               resourceAwsLambdaProvisionedConcurrencyConfig(),

aws/resource_aws_lambda_invocation.go

@@ -0,0 +1,100 @@
+package aws
+
+import (
+	"crypto/md5"
+	"fmt"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/lambda"
+
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/validation"
+)
+
+func resourceAwsLambdaInvocation() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceAwsLambdaInvocationCreate,
+		Read:   resourceAwsLambdaInvocationRead,
+		Update: resourceAwsLambdaInvocationUpdate,
+		Delete: resourceAwsLambdaInvocationDelete,
+
+		Schema: map[string]*schema.Schema{
+			"function_name": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+
+			"qualifier": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Default:  "$LATEST",
+			},
+
+			"input": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ValidateFunc: validation.StringIsJSON,
+			},
+
+			"invoke_on_update": {
+				Type:     schema.TypeBool,
+				Optional: true,
+				Default:  true,
+			},
+
+			"result": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func resourceAwsLambdaInvocationCreate(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).lambdaconn
+
+	functionName := d.Get("function_name").(string)
+	qualifier := d.Get("qualifier").(string)
+	input := []byte(d.Get("input").(string))
+
+	res, err := conn.Invoke(&lambda.InvokeInput{
+		FunctionName:   aws.String(functionName),
+		InvocationType: aws.String(lambda.InvocationTypeRequestResponse),
+		Payload:        input,
+		Qualifier:      aws.String(qualifier),
+	})
+
+	if err != nil {
+		return err
+	}
+
+	if res.FunctionError != nil {
+		return fmt.Errorf("Lambda function (%s) returned error: (%s)", functionName, string(res.Payload))
+	}
+
+	if err = d.Set("result", string(res.Payload)); err != nil {
+		return err
+	}
+
+	d.SetId(fmt.Sprintf("%s_%s_%x", functionName, qualifier, md5.Sum(input)))
+
+	return nil
+}
+
+func resourceAwsLambdaInvocationRead(d *schema.ResourceData, meta interface{}) error {
+	return nil
+}
+
+func resourceAwsLambdaInvocationUpdate(d *schema.ResourceData, meta interface{}) error {
+	if d.Get("invoke_on_update").(bool) {
+		return resourceAwsLambdaInvocationCreate(d, meta)
+	} else {
+		return nil
+	}
+}
+
+func resourceAwsLambdaInvocationDelete(d *schema.ResourceData, meta interface{}) error {
+	d.SetId("")
+	d.Set("result", nil)
+	return nil
+}

aws/resource_aws_lambda_invocation_test.go

@@ -0,0 +1,195 @@
+package aws
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/helper/acctest"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
+)
+
+func TestAccResourceAwsLambdaInvocation_basic(t *testing.T) {
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	testData := "value3"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckLambdaInvocationDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccResourceAwsLambdaInvocation_basic_config(rName, testData),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckLambdaInvocationResult("aws_lambda_invocation.invocation_test", `{"key1":"value1","key2":"value2","key3":"`+testData+`"}`),
+				),
+			},
+		},
+	})
+}
+
+func TestAccResourceAwsLambdaInvocation_qualifier(t *testing.T) {
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	testData := "value3"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckLambdaInvocationDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccResourceAwsLambdaInvocation_qualifier_config(rName, testData),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckLambdaInvocationResult("aws_lambda_invocation.invocation_test", `{"key1":"value1","key2":"value2","key3":"`+testData+`"}`),
+				),
+			},
+		},
+	})
+}
+
+func TestAccResourceAwsLambdaInvocation_complex(t *testing.T) {
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	testData := "value3"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckLambdaInvocationDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccResourceAwsLambdaInvocation_complex_config(rName, testData),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckLambdaInvocationResult("aws_lambda_invocation.invocation_test", `{"key1":{"subkey1":"subvalue1"},"key2":{"subkey2":"subvalue2","subkey3":{"a": "b"}},"key3":"`+testData+`"}`),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckLambdaInvocationDestroy(s *terraform.State) error {
+	// Nothing to check on destroy
+	return nil
+
+}
+
+func testAccResourceAwsLambdaInvocation_base_config(roleName string) string {
+	return fmt.Sprintf(`
+data "aws_iam_policy_document" "lambda_assume_role_policy" {
+  statement {
+    effect  = "Allow"
+    actions = ["sts:AssumeRole"]
+
+    principals {
+      type        = "Service"
+      identifiers = ["lambda.amazonaws.com"]
+    }
+  }
+}
+
+resource "aws_iam_role" "lambda_role" {
+  name               = "%s"
+  assume_role_policy = data.aws_iam_policy_document.lambda_assume_role_policy.json
+}
+
+resource "aws_iam_role_policy_attachment" "lambda_role_policy" {
+  policy_arn = "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
+  role       = aws_iam_role.lambda_role.name
+}
+`, roleName)
+}
+
+func testAccResourceAwsLambdaInvocation_basic_config(rName, testData string) string {
+	return fmt.Sprintf(testAccResourceAwsLambdaInvocation_base_config(rName)+`
+resource "aws_lambda_function" "lambda" {
+  depends_on = ["aws_iam_role_policy_attachment.lambda_role_policy"]
+
+  filename      = "test-fixtures/lambda_invocation.zip"
+  function_name = "%s"
+  role          = aws_iam_role.lambda_role.arn
+  handler       = "lambda_invocation.handler"
+  runtime       = "nodejs12.x"
+
+  environment {
+    variables = {
+      TEST_DATA = "%s"
+    }
+  }
+}
+
+resource "aws_lambda_invocation" "invocation_test" {
+  function_name = aws_lambda_function.lambda.function_name
+
+  input = <<JSON
+{
+  "key1": "value1",
+  "key2": "value2"
+}
+JSON
+}
+`, rName, testData)
+}
+
+func testAccResourceAwsLambdaInvocation_qualifier_config(rName, testData string) string {
+	return fmt.Sprintf(testAccResourceAwsLambdaInvocation_base_config(rName)+`
+resource "aws_lambda_function" "lambda" {
+  depends_on = ["aws_iam_role_policy_attachment.lambda_role_policy"]
+
+  filename      = "test-fixtures/lambda_invocation.zip"
+  function_name = "%s"
+  role          = aws_iam_role.lambda_role.arn
+  handler       = "lambda_invocation.handler"
+  runtime       = "nodejs12.x"
+  publish       = true
+
+  environment {
+    variables = {
+      TEST_DATA = "%s"
+    }
+  }
+}
+
+resource "aws_lambda_invocation" "invocation_test" {
+  function_name = aws_lambda_function.lambda.function_name
+  qualifier     = aws_lambda_function.lambda.version
+
+  input = <<JSON
+{
+  "key1": "value1",
+  "key2": "value2"
+}
+JSON
+}
+`, rName, testData)
+}
+
+func testAccResourceAwsLambdaInvocation_complex_config(rName, testData string) string {
+	return fmt.Sprintf(testAccResourceAwsLambdaInvocation_base_config(rName)+`
+resource "aws_lambda_function" "lambda" {
+  depends_on = ["aws_iam_role_policy_attachment.lambda_role_policy"]
+
+  filename      = "test-fixtures/lambda_invocation.zip"
+  function_name = "%s"
+  role          = aws_iam_role.lambda_role.arn
+  handler       = "lambda_invocation.handler"
+  runtime       = "nodejs12.x"
+  publish       = true
+
+  environment {
+    variables = {
+      TEST_DATA = "%s"
+    }
+  }
+}
+
+resource "aws_lambda_invocation" "invocation_test" {
+  function_name = aws_lambda_function.lambda.function_name
+
+  input = <<JSON
+{
+  "key1": {"subkey1": "subvalue1"},
+  "key2": {"subkey2": "subvalue2", "subkey3": {"a": "b"}}
+}
+JSON
+}
+`, rName, testData)
+}

website/docs/r/lambda_invocation.html.markdown

@@ -0,0 +1,44 @@
+---
+subcategory: "Lambda"
+layout: "aws"
+page_title: "AWS: aws_lambda_invocation"
+description: |-
+  Provide AWS Lambda Function result.
+---
+
+# Resource: aws_lambda_invocation
+
+Use this resource to invoke custom lambda functions.
+The lambda function is invoked with [RequestResponse](https://docs.aws.amazon.com/lambda/latest/dg/API_Invoke.html#API_Invoke_RequestSyntax)
+invocation type.
+
+## Example Usage
+
+```hcl
+resource "aws_lambda_invocation" "example" {
+  function_name = "${aws_lambda_function.lambda_function_test.function_name}"
+
+  input = <<JSON
+{
+  "key1": "value1",
+  "key2": "value2"
+}
+JSON
+}
+
+output "result_entry" {
+  value = jsondecode(aws_lambda_invocation.example.result)["key1"]
+}
+```
+
+## Argument Reference
+
+* `function_name` - (Required) The name of the lambda function.
+* `input` - (Required) A string in JSON format that is passed as payload to the lambda function.
+* `qualifier` - (Optional) The qualifier (a.k.a version) of the lambda function. Defaults
+ to `$LATEST`.
+* `invoke_on_update` - (Optional) Whether to run the lambda function on argument changes. Default is `true`.
+
+## Attributes Reference
+
+* `result` - String result of the lambda function invocation.