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Merge pull request #5444 from TimeIncOSS/f-aws-logs-metric-filter 

provider/aws: Add support for CloudWatch Log Metric Filter
This commit is contained in:
James Nugent 2016-03-21 16:43:38 +00:00
parent 26f4467966 af93183459
commit f946695187
10 changed files with 633 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
builtin/providers/aws/provider.go
View File

@ -133,6 +133,7 @@ func Provider() terraform.ResourceProvider {
"aws_cloudwatch_event_rule": resourceAwsCloudWatchEventRule(),
"aws_cloudwatch_event_target": resourceAwsCloudWatchEventTarget(),
"aws_cloudwatch_log_group": resourceAwsCloudWatchLogGroup(),
"aws_cloudwatch_log_metric_filter": resourceAwsCloudWatchLogMetricFilter(),
"aws_autoscaling_lifecycle_hook": resourceAwsAutoscalingLifecycleHook(),
"aws_cloudwatch_metric_alarm": resourceAwsCloudWatchMetricAlarm(),
"aws_codedeploy_app": resourceAwsCodeDeployApp(),

7
builtin/providers/aws/resource_aws_cloudwatch_log_group.go
View File

@ -19,9 +19,10 @@ func resourceAwsCloudWatchLogGroup() *schema.Resource {
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
Type: schema.TypeString,
Required: true,
ForceNew: true,
ValidateFunc: validateLogGroupName,
},
"retention_in_days": &schema.Schema{

187
builtin/providers/aws/resource_aws_cloudwatch_log_metric_filter.go Normal file
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@ -0,0 +1,187 @@
package aws
import (
"fmt"
"log"
"strings"
"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 resourceAwsCloudWatchLogMetricFilter() *schema.Resource {
return &schema.Resource{
Create: resourceAwsCloudWatchLogMetricFilterUpdate,
Read: resourceAwsCloudWatchLogMetricFilterRead,
Update: resourceAwsCloudWatchLogMetricFilterUpdate,
Delete: resourceAwsCloudWatchLogMetricFilterDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
ValidateFunc: validateLogMetricFilterName,
},
"pattern": &schema.Schema{
Type: schema.TypeString,
Required: true,
ValidateFunc: validateMaxLength(512),
StateFunc: func(v interface{}) string {
s, ok := v.(string)
if !ok {
return ""
}
return strings.TrimSpace(s)
},
},
"log_group_name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
ValidateFunc: validateLogGroupName,
},
"metric_transformation": &schema.Schema{
Type: schema.TypeList,
Required: true,
MaxItems: 1,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ValidateFunc: validateLogMetricFilterTransformationName,
},
"namespace": &schema.Schema{
Type: schema.TypeString,
Required: true,
ValidateFunc: validateLogMetricFilterTransformationName,
},
"value": &schema.Schema{
Type: schema.TypeString,
Required: true,
ValidateFunc: validateMaxLength(100),
},
},
},
},
},
}
}
func resourceAwsCloudWatchLogMetricFilterUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
input := cloudwatchlogs.PutMetricFilterInput{
FilterName: aws.String(d.Get("name").(string)),
FilterPattern: aws.String(strings.TrimSpace(d.Get("pattern").(string))),
LogGroupName: aws.String(d.Get("log_group_name").(string)),
}
transformations := d.Get("metric_transformation").([]interface{})
o := transformations[0].(map[string]interface{})
input.MetricTransformations = expandCloudWachLogMetricTransformations(o)
log.Printf("[DEBUG] Creating/Updating CloudWatch Log Metric Filter: %s", input)
_, err := conn.PutMetricFilter(&input)
if err != nil {
return fmt.Errorf("Creating/Updating CloudWatch Log Metric Filter failed: %s", err)
}
d.SetId(d.Get("name").(string))
log.Println("[INFO] CloudWatch Log Metric Filter created/updated")
return resourceAwsCloudWatchLogMetricFilterRead(d, meta)
}
func resourceAwsCloudWatchLogMetricFilterRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
mf, err := lookupCloudWatchLogMetricFilter(conn, d.Get("name").(string),
d.Get("log_group_name").(string), nil)
if err != nil {
if _, ok := err.(*resource.NotFoundError); ok {
log.Printf("[WARN] Removing CloudWatch Log Metric Filter as it is gone")
d.SetId("")
return nil
}
return fmt.Errorf("Failed reading CloudWatch Log Metric Filter: %s", err)
}
log.Printf("[DEBUG] Found CloudWatch Log Metric Filter: %s", mf)
d.Set("name", mf.FilterName)
d.Set("pattern", mf.FilterPattern)
d.Set("metric_transformation", flattenCloudWachLogMetricTransformations(mf.MetricTransformations))
return nil
}
func lookupCloudWatchLogMetricFilter(conn *cloudwatchlogs.CloudWatchLogs,
name, logGroupName string, nextToken *string) (*cloudwatchlogs.MetricFilter, error) {
input := cloudwatchlogs.DescribeMetricFiltersInput{
FilterNamePrefix: aws.String(name),
LogGroupName: aws.String(logGroupName),
NextToken: nextToken,
}
log.Printf("[DEBUG] Reading CloudWatch Log Metric Filter: %s", input)
resp, err := conn.DescribeMetricFilters(&input)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "ResourceNotFoundException" {
return nil, &resource.NotFoundError{
Message: fmt.Sprintf("CloudWatch Log Metric Filter %q / %q not found via"+
" initial DescribeMetricFilters call", name, logGroupName),
LastError: err,
LastRequest: input,
}
}
return nil, fmt.Errorf("Failed describing CloudWatch Log Metric Filter: %s", err)
}
for _, mf := range resp.MetricFilters {
if *mf.FilterName == name {
return mf, nil
}
}
if resp.NextToken != nil {
return lookupCloudWatchLogMetricFilter(conn, name, logGroupName, resp.NextToken)
}
return nil, &resource.NotFoundError{
Message: fmt.Sprintf("CloudWatch Log Metric Filter %q / %q not found "+
"in given results from DescribeMetricFilters", name, logGroupName),
LastResponse: resp,
LastRequest: input,
}
}
func resourceAwsCloudWatchLogMetricFilterDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatchlogsconn
input := cloudwatchlogs.DeleteMetricFilterInput{
FilterName: aws.String(d.Get("name").(string)),
LogGroupName: aws.String(d.Get("log_group_name").(string)),
}
log.Printf("[INFO] Deleting CloudWatch Log Metric Filter: %s", d.Id())
_, err := conn.DeleteMetricFilter(&input)
if err != nil {
return fmt.Errorf("Error deleting CloudWatch Log Metric Filter: %s", err)
}
log.Println("[INFO] CloudWatch Log Metric Filter deleted")
d.SetId("")
return nil
}

185
builtin/providers/aws/resource_aws_cloudwatch_log_metric_filter_test.go Normal file
View File

@ -0,0 +1,185 @@
package aws
import (
"fmt"
"testing"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/terraform"
)
func TestAccAWSCloudWatchLogMetricFilter_basic(t *testing.T) {
var mf cloudwatchlogs.MetricFilter
resource.Test(t, resource.TestCase{
PreCheck: func() { testAccPreCheck(t) },
Providers: testAccProviders,
CheckDestroy: testAccCheckAWSCloudWatchLogMetricFilterDestroy,
Steps: []resource.TestStep{
resource.TestStep{
Config: testAccAWSCloudWatchLogMetricFilterConfig,
Check: resource.ComposeTestCheckFunc(
testAccCheckCloudWatchLogMetricFilterExists("aws_cloudwatch_log_metric_filter.foobar", &mf),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "name", "MyAppAccessCount"),
testAccCheckCloudWatchLogMetricFilterName(&mf, "MyAppAccessCount"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "pattern", ""),
testAccCheckCloudWatchLogMetricFilterPattern(&mf, ""),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "log_group_name", "MyApp/access.log"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "metric_transformation.0.name", "EventCount"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "metric_transformation.0.namespace", "YourNamespace"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "metric_transformation.0.value", "1"),
testAccCheckCloudWatchLogMetricFilterTransformation(&mf, &cloudwatchlogs.MetricTransformation{
MetricName: aws.String("EventCount"),
MetricNamespace: aws.String("YourNamespace"),
MetricValue: aws.String("1"),
}),
),
},
resource.TestStep{
Config: testAccAWSCloudWatchLogMetricFilterConfigModified,
Check: resource.ComposeTestCheckFunc(
testAccCheckCloudWatchLogMetricFilterExists("aws_cloudwatch_log_metric_filter.foobar", &mf),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "name", "MyAppAccessCount"),
testAccCheckCloudWatchLogMetricFilterName(&mf, "MyAppAccessCount"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "pattern", "{ $.errorCode = \"AccessDenied\" }"),
testAccCheckCloudWatchLogMetricFilterPattern(&mf, "{ $.errorCode = \"AccessDenied\" }"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "log_group_name", "MyApp/access.log"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "metric_transformation.0.name", "AccessDeniedCount"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "metric_transformation.0.namespace", "MyNamespace"),
resource.TestCheckResourceAttr("aws_cloudwatch_log_metric_filter.foobar", "metric_transformation.0.value", "2"),
testAccCheckCloudWatchLogMetricFilterTransformation(&mf, &cloudwatchlogs.MetricTransformation{
MetricName: aws.String("AccessDeniedCount"),
MetricNamespace: aws.String("MyNamespace"),
MetricValue: aws.String("2"),
}),
),
},
},
})
}
func testAccCheckCloudWatchLogMetricFilterName(mf *cloudwatchlogs.MetricFilter, name string) resource.TestCheckFunc {
return func(s *terraform.State) error {
if name != *mf.FilterName {
return fmt.Errorf("Expected filter name: %q, given: %q", name, *mf.FilterName)
}
return nil
}
}
func testAccCheckCloudWatchLogMetricFilterPattern(mf *cloudwatchlogs.MetricFilter, pattern string) resource.TestCheckFunc {
return func(s *terraform.State) error {
if mf.FilterPattern == nil {
if pattern != "" {
return fmt.Errorf("Received empty filter pattern, expected: %q", pattern)
}
return nil
}
if pattern != *mf.FilterPattern {
return fmt.Errorf("Expected filter pattern: %q, given: %q", pattern, *mf.FilterPattern)
}
return nil
}
}
func testAccCheckCloudWatchLogMetricFilterTransformation(mf *cloudwatchlogs.MetricFilter,
t *cloudwatchlogs.MetricTransformation) resource.TestCheckFunc {
return func(s *terraform.State) error {
given := mf.MetricTransformations[0]
expected := t
if *given.MetricName != *expected.MetricName {
return fmt.Errorf("Expected metric name: %q, received: %q",
*expected.MetricName, *given.MetricName)
}
if *given.MetricNamespace != *expected.MetricNamespace {
return fmt.Errorf("Expected metric namespace: %q, received: %q",
*expected.MetricNamespace, *given.MetricNamespace)
}
if *given.MetricValue != *expected.MetricValue {
return fmt.Errorf("Expected metric value: %q, received: %q",
*expected.MetricValue, *given.MetricValue)
}
return nil
}
}
func testAccCheckCloudWatchLogMetricFilterExists(n string, mf *cloudwatchlogs.MetricFilter) resource.TestCheckFunc {
return func(s *terraform.State) error {
rs, ok := s.RootModule().Resources[n]
if !ok {
return fmt.Errorf("Not found: %s", n)
}
conn := testAccProvider.Meta().(*AWSClient).cloudwatchlogsconn
metricFilter, err := lookupCloudWatchLogMetricFilter(conn, rs.Primary.ID, rs.Primary.Attributes["log_group_name"], nil)
if err != nil {
return err
}
*mf = *metricFilter
return nil
}
}
func testAccCheckAWSCloudWatchLogMetricFilterDestroy(s *terraform.State) error {
conn := testAccProvider.Meta().(*AWSClient).cloudwatchlogsconn
for _, rs := range s.RootModule().Resources {
if rs.Type != "aws_cloudwatch_log_metric_filter" {
continue
}
_, err := lookupCloudWatchLogMetricFilter(conn, rs.Primary.ID, rs.Primary.Attributes["log_group_name"], nil)
if err == nil {
return fmt.Errorf("MetricFilter Still Exists: %s", rs.Primary.ID)
}
}
return nil
}
var testAccAWSCloudWatchLogMetricFilterConfig = `
resource "aws_cloudwatch_log_metric_filter" "foobar" {
name = "MyAppAccessCount"
pattern = ""
log_group_name = "${aws_cloudwatch_log_group.dada.name}"
metric_transformation {
name = "EventCount"
namespace = "YourNamespace"
value = "1"
}
}
resource "aws_cloudwatch_log_group" "dada" {
name = "MyApp/access.log"
}
`
var testAccAWSCloudWatchLogMetricFilterConfigModified = `
resource "aws_cloudwatch_log_metric_filter" "foobar" {
name = "MyAppAccessCount"
pattern = <<PATTERN
{ $.errorCode = "AccessDenied" }
PATTERN
log_group_name = "${aws_cloudwatch_log_group.dada.name}"
metric_transformation {
name = "AccessDeniedCount"
namespace = "MyNamespace"
value = "2"
}
}
resource "aws_cloudwatch_log_group" "dada" {
name = "MyApp/access.log"
}
`

21
builtin/providers/aws/structure.go
View File

@ -11,6 +11,7 @@ import (
"github.com/aws/aws-sdk-go/service/apigateway"
"github.com/aws/aws-sdk-go/service/autoscaling"
"github.com/aws/aws-sdk-go/service/cloudformation"
"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
"github.com/aws/aws-sdk-go/service/directoryservice"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/aws/aws-sdk-go/service/ecs"
@ -924,3 +925,23 @@ func expandApiGatewayStageKeyOperations(d *schema.ResourceData) []*apigateway.Pa
return operations
}
func expandCloudWachLogMetricTransformations(m map[string]interface{}) []*cloudwatchlogs.MetricTransformation {
transformation := cloudwatchlogs.MetricTransformation{
MetricName: aws.String(m["name"].(string)),
MetricNamespace: aws.String(m["namespace"].(string)),
MetricValue: aws.String(m["value"].(string)),
}
return []*cloudwatchlogs.MetricTransformation{&transformation}
}
func flattenCloudWachLogMetricTransformations(ts []*cloudwatchlogs.MetricTransformation) map[string]string {
m := make(map[string]string, 0)
m["name"] = *ts[0].MetricName
m["namespace"] = *ts[0].MetricNamespace
m["value"] = *ts[0].MetricValue
return m
}

59
builtin/providers/aws/validators.go
View File

@ -308,3 +308,62 @@ func validateHTTPMethod(v interface{}, k string) (ws []string, errors []error) {
}
return
}
func validateLogMetricFilterName(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if len(value) > 512 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 512 characters: %q", k, value))
}
// http://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_PutMetricFilter.html
pattern := `^[^:*]+$`
if !regexp.MustCompile(pattern).MatchString(value) {
errors = append(errors, fmt.Errorf(
"%q isn't a valid log metric name (must not contain colon nor asterisk): %q",
k, value))
}
return
}
func validateLogMetricFilterTransformationName(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if len(value) > 255 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 255 characters: %q", k, value))
}
// http://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_MetricTransformation.html
pattern := `^[^:*$]*$`
if !regexp.MustCompile(pattern).MatchString(value) {
errors = append(errors, fmt.Errorf(
"%q isn't a valid log metric transformation name (must not contain"+
" colon, asterisk nor dollar sign): %q",
k, value))
}
return
}
func validateLogGroupName(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if len(value) > 512 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 512 characters: %q", k, value))
}
// http://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_CreateLogGroup.html
pattern := `^[\.\-_/#A-Za-z0-9]+$`
if !regexp.MustCompile(pattern).MatchString(value) {
errors = append(errors, fmt.Errorf(
"%q isn't a valid log group name (alphanumeric characters, underscores,"+
" hyphens, slashes, hash signs and dots are allowed): %q",
k, value))
}
return
}

97
builtin/providers/aws/validators_test.go
View File

@ -285,3 +285,100 @@ func TestValidateHTTPMethod(t *testing.T) {
}
}
}
func TestValidateLogMetricFilterName(t *testing.T) {
validNames := []string{
"YadaHereAndThere",
"Valid-5Metric_Name",
"This . is also %% valid@!)+(",
"1234",
strings.Repeat("W", 512),
}
for _, v := range validNames {
_, errors := validateLogMetricFilterName(v, "name")
if len(errors) != 0 {
t.Fatalf("%q should be a valid Log Metric Filter Name: %q", v, errors)
}
}
invalidNames := []string{
"Here is a name with: colon",
"and here is another * invalid name",
"*",
// length > 512
strings.Repeat("W", 513),
}
for _, v := range invalidNames {
_, errors := validateLogMetricFilterName(v, "name")
if len(errors) == 0 {
t.Fatalf("%q should be an invalid Log Metric Filter Name", v)
}
}
}
func TestValidateLogMetricTransformationName(t *testing.T) {
validNames := []string{
"YadaHereAndThere",
"Valid-5Metric_Name",
"This . is also %% valid@!)+(",
"1234",
"",
strings.Repeat("W", 255),
}
for _, v := range validNames {
_, errors := validateLogMetricFilterTransformationName(v, "name")
if len(errors) != 0 {
t.Fatalf("%q should be a valid Log Metric Filter Transformation Name: %q", v, errors)
}
}
invalidNames := []string{
"Here is a name with: colon",
"and here is another * invalid name",
"also $ invalid",
"*",
// length > 255
strings.Repeat("W", 256),
}
for _, v := range invalidNames {
_, errors := validateLogMetricFilterTransformationName(v, "name")
if len(errors) == 0 {
t.Fatalf("%q should be an invalid Log Metric Filter Transformation Name", v)
}
}
}
func TestValidateLogGroupName(t *testing.T) {
validNames := []string{
"ValidLogGroupName",
"ValidLogGroup.Name",
"valid/Log-group",
"1234",
"YadaValid#0123",
"Also_valid-name",
strings.Repeat("W", 512),
}
for _, v := range validNames {
_, errors := validateLogGroupName(v, "name")
if len(errors) != 0 {
t.Fatalf("%q should be a valid Log Metric Filter Transformation Name: %q", v, errors)
}
}
invalidNames := []string{
"Here is a name with: colon",
"and here is another * invalid name",
"also $ invalid",
"This . is also %% invalid@!)+(",
"*",
"",
// length > 512
strings.Repeat("W", 513),
}
for _, v := range invalidNames {
_, errors := validateLogGroupName(v, "name")
if len(errors) == 0 {
t.Fatalf("%q should be an invalid Log Metric Filter Transformation Name", v)
}
}
}

21
helper/resource/error.go Normal file
View File

@ -0,0 +1,21 @@
package resource
type NotFoundError struct {
LastError error
LastRequest interface{}
LastResponse interface{}
Message string
Retries int
}
func (e *NotFoundError) Error() string {
if e.Message != "" {
return e.Message
}
return "couldn't find resource"
}
func NewNotFoundError(err string) *NotFoundError {
return &NotFoundError{Message: err}
}

54
website/source/docs/providers/aws/r/cloudwatch_log_metric_filter.html.markdown Normal file
View File

@ -0,0 +1,54 @@
---
layout: "aws"
page_title: "AWS: aws_cloudwatch_log_metric_filter"
sidebar_current: "docs-aws-resource-cloudwatch-log-metric-filter"
description: |-
Provides a CloudWatch Log Metric Filter resource.
---
# aws\_cloudwatch\_log\_metric\_filter
Provides a CloudWatch Log Metric Filter resource.
## Example Usage
```
resource "aws_cloudwatch_log_metric_filter" "yada" {
name = "MyAppAccessCount"
pattern = ""
log_group_name = "${aws_cloudwatch_log_group.dada.name}"
metric_transformation {
name = "EventCount"
namespace = "YourNamespace"
value = "1"
}
}
resource "aws_cloudwatch_log_group" "dada" {
name = "MyApp/access.log"
}
```
## Argument Reference
The following arguments are supported:
* `name` - (Required) A name for the metric filter.
* `pattern` - (Required) A valid [CloudWatch Logs filter pattern](https://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/FilterAndPatternSyntax.html)
for extracting metric data out of ingested log events.
* `log_group_name` - (Required) The name of the log group to associate the metric filter with.
* `metric_transformation` - (Required) A block defining collection of information
needed to define how metric data gets emitted. See below.
The `metric_transformation` block supports the following arguments:
* `name` - (Required) The name of the CloudWatch metric to which the monitored log information should be published (e.g. `ErrorCount`)
* `namespace` - (Required) The destination namespace of the CloudWatch metric.
* `value` - (Required) What to publish to the metric. For example, if you're counting the occurrences of a particular term like "Error", the value will be "1" for each occurrence. If you're counting the bytes transferred the published value will be the value in the log event.
## Attributes Reference
The following attributes are exported:
* `id` - The name of the metric filter.

4
website/source/layouts/aws.erb
View File

@ -76,6 +76,10 @@
<a href="/docs/providers/aws/r/cloudwatch_log_group.html">aws_cloudwatch_log_group</a>
</li>
<li<%= sidebar_current("docs-aws-resource-cloudwatch-log-metric-filter") %>>
<a href="/docs/providers/aws/r/cloudwatch_log_metric_filter.html">aws_cloudwatch_log_metric_filter</a>
</li>
<li<%= sidebar_current("docs-aws-resource-cloudwatch-metric-alarm") %>>
<a href="/docs/providers/aws/r/cloudwatch_metric_alarm.html">aws_cloudwatch_metric_alarm</a>
</li>