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fix(cloudwatch-actions): LambdaAction fails if added to multiple action types #29515

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merged 7 commits into from
Apr 2, 2024
Merged

fix(cloudwatch-actions): LambdaAction fails if added to multiple action types #29515

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e58904a
fix(cloudwatch-actions): LambdaAction fails if added to multiple acti…
morrijm4 Mar 16, 2024
0f18813
integ test updates
morrijm4 Mar 16, 2024
c3a5a0a
add arn comparison & rm feature flag interference
morrijm4 Mar 16, 2024
71104db
add comment & test case
morrijm4 Mar 19, 2024
a5951b2
Merge branch 'main' into morrijm4/lambda-action-fails-with-multiple-a…
morrijm4 Mar 19, 2024
80c8f51
Merge branch 'main' into morrijm4/lambda-action-fails-with-multiple-a…
morrijm4 Mar 31, 2024
3b222f3
Merge branch 'main' into morrijm4/lambda-action-fails-with-multiple-a…
GavinZZ Apr 2, 2024
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4 changes: 2 additions & 2 deletions ...t/integ.lambda-alarm-action.js.snapshot/LambdaAlarmActionIntegrationTestStack.assets.json
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56 changes: 56 additions & 0 deletions ...integ.lambda-alarm-action.js.snapshot/LambdaAlarmActionIntegrationTestStack.template.json
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Original file line number Diff line number Diff line change
Expand Up @@ -79,8 +79,36 @@
}
],
"EvaluationPeriods": 1,
"InsufficientDataActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"MetricName": "Errors",
"Namespace": "AWS/Lambda",
"OKActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"Period": 60,
"Statistic": "Sum",
"Threshold": 1,
Expand Down Expand Up @@ -309,8 +337,36 @@
}
],
"EvaluationPeriods": 1,
"InsufficientDataActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"MetricName": "Errors",
"Namespace": "AWS/Lambda",
"OKActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"Period": 60,
"Statistic": "Sum",
"Threshold": 1,
Expand Down
4 changes: 2 additions & 2 deletions ...alarm-action.js.snapshot/LambdaAlarmActionIntegrationTestStackWithFeatureFlag.assets.json
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56 changes: 56 additions & 0 deletions ...arm-action.js.snapshot/LambdaAlarmActionIntegrationTestStackWithFeatureFlag.template.json
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Original file line number Diff line number Diff line change
Expand Up @@ -79,8 +79,36 @@
}
],
"EvaluationPeriods": 1,
"InsufficientDataActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"MetricName": "Errors",
"Namespace": "AWS/Lambda",
"OKActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"Period": 60,
"Statistic": "Sum",
"Threshold": 1,
Expand Down Expand Up @@ -309,8 +337,36 @@
}
],
"EvaluationPeriods": 1,
"InsufficientDataActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"MetricName": "Errors",
"Namespace": "AWS/Lambda",
"OKActions": [
{
"Ref": "alarmLambdaFeatureCurrentVersionCF39751979501d2f67eaf906b2ef0c378303873b"
},
{
"Ref": "alarmLambdaFeatureAliasaliasName16F91D34"
},
{
"Fn::GetAtt": [
"alarmLambdaFeatureD560800F",
"Arn"
]
}
],
"Period": 60,
"Statistic": "Sum",
"Threshold": 1,
Expand Down
2 changes: 1 addition & 1 deletion ...nteg/test/aws-cloudwatch-actions/test/integ.lambda-alarm-action.js.snapshot/manifest.json
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56 changes: 56 additions & 0 deletions ...rk-integ/test/aws-cloudwatch-actions/test/integ.lambda-alarm-action.js.snapshot/tree.json
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12 changes: 12 additions & 0 deletions ...cdk-testing/framework-integ/test/aws-cloudwatch-actions/test/integ.lambda-alarm-action.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,12 @@ class LambdaAlarmActionIntegrationTestStack extends Stack {
alarm.addAlarmAction(new cloudwatchActions.LambdaAction(version));
alarm.addAlarmAction(new cloudwatchActions.LambdaAction(aliasName));
alarm.addAlarmAction(new cloudwatchActions.LambdaAction(alarmLambda));
alarm.addOkAction(new cloudwatchActions.LambdaAction(version));
alarm.addOkAction(new cloudwatchActions.LambdaAction(aliasName));
alarm.addOkAction(new cloudwatchActions.LambdaAction(alarmLambda));
alarm.addInsufficientDataAction(new cloudwatchActions.LambdaAction(version));
alarm.addInsufficientDataAction(new cloudwatchActions.LambdaAction(aliasName));
alarm.addInsufficientDataAction(new cloudwatchActions.LambdaAction(alarmLambda));

if (isFeature) {
const alarm2 = new cloudwatch.Alarm(this, `Alarm${lambdaIdSuffix}`, {
Expand All @@ -53,6 +59,12 @@ class LambdaAlarmActionIntegrationTestStack extends Stack {
alarm2.addAlarmAction(new cloudwatchActions.LambdaAction(version));
alarm2.addAlarmAction(new cloudwatchActions.LambdaAction(aliasName));
alarm2.addAlarmAction(new cloudwatchActions.LambdaAction(alarmLambda));
alarm2.addOkAction(new cloudwatchActions.LambdaAction(version));
alarm2.addOkAction(new cloudwatchActions.LambdaAction(aliasName));
alarm2.addOkAction(new cloudwatchActions.LambdaAction(alarmLambda));
alarm2.addInsufficientDataAction(new cloudwatchActions.LambdaAction(version));
alarm2.addInsufficientDataAction(new cloudwatchActions.LambdaAction(aliasName));
alarm2.addInsufficientDataAction(new cloudwatchActions.LambdaAction(alarmLambda));
}
}
}
Expand Down
20 changes: 14 additions & 6 deletions packages/aws-cdk-lib/aws-cloudwatch-actions/lib/lambda.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -23,12 +23,20 @@ export class LambdaAction implements cloudwatch.IAlarmAction {
*/
bind(scope: Construct, alarm: cloudwatch.IAlarm): cloudwatch.AlarmActionConfig {
const idPrefix = FeatureFlags.of(scope).isEnabled(LAMBDA_PERMISSION_LOGICAL_ID_FOR_LAMBDA_ACTION) ? alarm.node.id : '';
this.lambdaFunction.addPermission(`${idPrefix}AlarmPermission`, {
sourceAccount: Stack.of(scope).account,
action: 'lambda:InvokeFunction',
sourceArn: alarm.alarmArn,
principal: new iam.ServicePrincipal('lambda.alarms.cloudwatch.amazonaws.com'),
});
const permissionId = `${idPrefix}AlarmPermission`;
const permissionNode = this.lambdaFunction.permissionsNode.tryFindChild(permissionId) as lambda.CfnPermission | undefined;

// If the Lambda permission has already been added to this function
// we skip adding it to avoid an exception being thrown
// see https://github.com/aws/aws-cdk/issues/29514
if (permissionNode?.sourceArn !== alarm.alarmArn) {
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this.lambdaFunction.addPermission(permissionId, {
sourceAccount: Stack.of(scope).account,
action: 'lambda:InvokeFunction',
sourceArn: alarm.alarmArn,
principal: new iam.ServicePrincipal('lambda.alarms.cloudwatch.amazonaws.com'),
});
}

return {
alarmActionArn: this.lambdaFunction.functionArn,
Expand Down
45 changes: 44 additions & 1 deletion packages/aws-cdk-lib/aws-cloudwatch-actions/test/lambda.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -139,7 +139,12 @@ def handler(event, context):
handler: 'index.handler',
});
alarm1.addAlarmAction(new actions.LambdaAction(alarmLambda));
alarm1.addOkAction(new actions.LambdaAction(alarmLambda));
alarm1.addInsufficientDataAction(new actions.LambdaAction(alarmLambda));

alarm2.addAlarmAction(new actions.LambdaAction(alarmLambda));
alarm2.addOkAction(new actions.LambdaAction(alarmLambda));
alarm2.addInsufficientDataAction(new actions.LambdaAction(alarmLambda));

// THEN
Template.fromStack(stack).resourceCountIs('AWS::CloudWatch::Alarm', 2);
Expand Down Expand Up @@ -173,9 +178,47 @@ def handler(event, context):
handler: 'index.handler',
});
alarm1.addAlarmAction(new actions.LambdaAction(alarmLambda));
alarm1.addOkAction(new actions.LambdaAction(alarmLambda));
alarm1.addInsufficientDataAction(new actions.LambdaAction(alarmLambda));
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// THEN
expect(() => {
alarm2.addAlarmAction(new actions.LambdaAction(alarmLambda));
}).toThrow(/There is already a Construct with name 'AlarmPermission' in Function \[alarmLambda\]/);
});
});

test('can use same lambda for same action multiple time', () => {
const stack = new Stack();
const alarm = new cloudwatch.Alarm(stack, 'Alarm', {
metric: new cloudwatch.Metric({ namespace: 'AWS', metricName: 'Test' }),
evaluationPeriods: 3,
threshold: 100,
});

// WHEN
const alarmLambda = new lambda.Function(stack, 'alarmLambda', {
runtime: lambda.Runtime.PYTHON_3_12,
functionName: 'alarmLambda',
code: lambda.Code.fromInline(`
def handler(event, context):
print('event:', event)
print('.............................................')
print('context:', context)`),
handler: 'index.handler',
});
alarm.addAlarmAction(new actions.LambdaAction(alarmLambda));
alarm.addAlarmAction(new actions.LambdaAction(alarmLambda));

// THEN
Template.fromStack(stack).resourceCountIs('AWS::Lambda::Permission', 1);
Template.fromStack(stack).hasResourceProperties('AWS::CloudWatch::Alarm', {
AlarmActions: [
{
'Fn::GetAtt': ['alarmLambda131DB691', 'Arn'],
},
{
'Fn::GetAtt': ['alarmLambda131DB691', 'Arn'],
},
],
});
});