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Add support for ALB alarms and dashboard
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,8 @@ | ||
| { | ||
| "packages": [ | ||
| "serverless-plugin", | ||
| "serverless-test-project" | ||
| "serverless-test-project", | ||
| "serverless-test-project-alb" | ||
| ], | ||
| "version": "1.3.0" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,306 @@ | ||
| 'use strict' | ||
|
|
||
| const { makeResourceName, getStatisticName } = require('./util') | ||
| /** | ||
| * Given CloudFormation syntax for an Target Group, derive CloudFormation syntax for | ||
| * the LoadBalancer LogicalId name | ||
| * | ||
| * @param loadBalancerResources syntax for an Load Balancer Application | ||
| * @returns CloudFormation syntax for the Load Balancer Resources | ||
| */ | ||
| function resolveLoadBalancerLogicalIdName (loadBalancerResources) { | ||
| for (const key in loadBalancerResources) { | ||
| if (loadBalancerResources[key].Type === 'AWS::ElasticLoadBalancingV2::LoadBalancer') { | ||
| return key | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @param {object} albAlarmConfig The fully resolved alarm configuration | ||
| */ | ||
| module.exports = function ALBlarms (albAlarmConfig, context) { | ||
| return { | ||
| createALBAlarms | ||
| } | ||
|
|
||
| /** | ||
| * Add all required Application Load Balancer alarms to the provided CloudFormation template | ||
| * based on the resources found within | ||
| * | ||
| * @param {CloudFormationTemplate} cfTemplate A CloudFormation template object | ||
| */ | ||
| function createALBAlarms (cfTemplate) { | ||
| const loadBalancerResources = cfTemplate.getResourcesByType( | ||
| 'AWS::ElasticLoadBalancingV2::LoadBalancer' | ||
| ) | ||
|
|
||
| for (const [loadBalancerResourceName, loadBalancerResource] of Object.entries(loadBalancerResources)) { | ||
| if (albAlarmConfig.HTTPCode_ELB_5XX_Count.enabled) { | ||
| const httpCodeELB5XXCount = createHTTPCodeELB5XXCountAlarm( | ||
| loadBalancerResourceName, | ||
| loadBalancerResource, | ||
| albAlarmConfig.HTTPCode_ELB_5XX_Count | ||
| ) | ||
| cfTemplate.addResource(httpCodeELB5XXCount.resourceName, httpCodeELB5XXCount.resource) | ||
| } | ||
|
|
||
| if (albAlarmConfig.RejectedConnectionCount.enabled) { | ||
| const rejectedConnectionCount = createRejectedConnectionCountAlarm( | ||
| loadBalancerResourceName, | ||
| loadBalancerResource, | ||
| albAlarmConfig.RejectedConnectionCount | ||
| ) | ||
| cfTemplate.addResource(rejectedConnectionCount.resourceName, rejectedConnectionCount.resource) | ||
| } | ||
| } | ||
|
|
||
| const targetGroupResources = cfTemplate.getResourcesByType( | ||
| 'AWS::ElasticLoadBalancingV2::TargetGroup' | ||
| ) | ||
| for (const [targetGroupResourceName, targetGroupResource] of Object.entries(targetGroupResources)) { | ||
| const loadBalancerName = resolveLoadBalancerLogicalIdName(loadBalancerResources) | ||
|
|
||
| if (albAlarmConfig.HTTPCode_Target_5XX_Count.enabled) { | ||
| const httpCodeTarget5XXCount = createHTTPCodeTarget5XXCountAlarm( | ||
| targetGroupResourceName, | ||
| targetGroupResource, | ||
| loadBalancerName, | ||
| albAlarmConfig.HTTPCode_Target_5XX_Count | ||
| ) | ||
| cfTemplate.addResource(httpCodeTarget5XXCount.resourceName, httpCodeTarget5XXCount.resource) | ||
| } | ||
| if (albAlarmConfig.UnHealthyHostCount.enabled) { | ||
| const unHealthyHostCount = createUnHealthyHostCountAlarm( | ||
| targetGroupResourceName, | ||
| targetGroupResource, | ||
| loadBalancerName, | ||
| albAlarmConfig.UnHealthyHostCount | ||
| ) | ||
| cfTemplate.addResource(unHealthyHostCount.resourceName, unHealthyHostCount.resource) | ||
| } | ||
| if (albAlarmConfig.LambdaInternalError.enabled) { | ||
| const lambdaInternalError = createLambdaInternalErrorAlarm( | ||
| targetGroupResourceName, | ||
| targetGroupResource, | ||
| loadBalancerName, | ||
| albAlarmConfig.LambdaInternalError | ||
| ) | ||
| cfTemplate.addResource(lambdaInternalError.resourceName, lambdaInternalError.resource) | ||
| } | ||
| if (albAlarmConfig.LambdaUserError.enabled) { | ||
| const lambdaUserError = createLambdaUserErrorAlarm( | ||
| targetGroupResourceName, | ||
| targetGroupResource, | ||
| loadBalancerName, | ||
| albAlarmConfig.LambdaUserError | ||
| ) | ||
| cfTemplate.addResource(lambdaUserError.resourceName, lambdaUserError.resource) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| function createLoadBalancerAlarm ( | ||
| alarmName, | ||
| alarmDescription, | ||
| loadBalancerResourceName, // Logical ID of the CloudFormation Load Balancer Resource | ||
| comparisonOperator, | ||
| threshold, | ||
| metricName, | ||
| statistic, | ||
| period, | ||
| extendedStatistic, | ||
| evaluationPeriods, | ||
| treatMissingData | ||
| ) { | ||
| const loadBalancerFullName = { 'Fn::GetAtt': [loadBalancerResourceName, 'LoadBalancerFullName'] } | ||
| const metricProperties = { | ||
| Dimensions: [{ Name: 'LoadBalancer', Value: loadBalancerFullName }], | ||
| MetricName: metricName, | ||
| Namespace: 'AWS/ApplicationELB', | ||
| Period: period, | ||
| Statistic: statistic, | ||
| ExtendedStatistic: extendedStatistic | ||
| } | ||
|
|
||
| return { | ||
| Type: 'AWS::CloudWatch::Alarm', | ||
| Properties: { | ||
| ActionsEnabled: true, | ||
| AlarmActions: context.alarmActions, | ||
| AlarmName: alarmName, | ||
| AlarmDescription: alarmDescription, | ||
| EvaluationPeriods: evaluationPeriods, | ||
| ComparisonOperator: comparisonOperator, | ||
| Threshold: threshold, | ||
| TreatMissingData: treatMissingData, | ||
| ...metricProperties | ||
| } | ||
| } | ||
| } | ||
|
|
||
| function createLoadBalancerTargetAlarm ( | ||
| alarmName, | ||
| alarmDescription, | ||
| targetGroupResourceName, // Logical ID of the CloudFormation Target Group Resource | ||
| loadBalancerName, | ||
| comparisonOperator, | ||
| threshold, | ||
| metricName, | ||
| statistic, | ||
| period, | ||
| extendedStatistic, | ||
| evaluationPeriods, | ||
| treatMissingData | ||
| ) { | ||
| const targetGroupFullName = { 'Fn::GetAtt': [targetGroupResourceName, 'TargetGroupFullName'] } | ||
| const loadBalancerFullName = { 'Fn::GetAtt': [loadBalancerName, 'LoadBalancerFullName'] } | ||
| const metricProperties = { | ||
| Dimensions: [{ Name: 'TargetGroup', Value: targetGroupFullName }, { Name: 'LoadBalancer', Value: loadBalancerFullName }], | ||
| MetricName: metricName, | ||
| Namespace: 'AWS/ApplicationELB', | ||
| Period: period, | ||
| Statistic: statistic, | ||
| ExtendedStatistic: extendedStatistic | ||
| } | ||
|
|
||
| return { | ||
| Type: 'AWS::CloudWatch::Alarm', | ||
| Properties: { | ||
| ActionsEnabled: true, | ||
| AlarmActions: context.alarmActions, | ||
| AlarmName: alarmName, | ||
| AlarmDescription: alarmDescription, | ||
| EvaluationPeriods: evaluationPeriods, | ||
| ComparisonOperator: comparisonOperator, | ||
| Threshold: threshold, | ||
| TreatMissingData: treatMissingData, | ||
| ...metricProperties | ||
| } | ||
| } | ||
| } | ||
|
|
||
| function createHTTPCodeELB5XXCountAlarm (loadBalancerResourceName, loadBalancerResource, config) { | ||
| const threshold = config.Threshold | ||
| return { | ||
| resourceName: makeResourceName('LoadBalancer', loadBalancerResourceName, 'HTTPCodeELB5XXCount'), | ||
| resource: createLoadBalancerAlarm( | ||
| `LoadBalancerHTTPCodeELB5XXCountAlarm_${loadBalancerResourceName}`, | ||
| `LoadBalancer HTTP Code ELB 5XX Count ${getStatisticName(config)} for ${loadBalancerResourceName} breaches ${threshold}`, | ||
| loadBalancerResourceName, | ||
| config.ComparisonOperator, | ||
| threshold, | ||
| 'HTTPCode_ELB_5XX_Count', // metricName | ||
| config.Statistic, | ||
| config.Period, | ||
| config.ExtendedStatistic, | ||
| config.EvaluationPeriods, | ||
| config.TreatMissingData | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| function createRejectedConnectionCountAlarm (loadBalancerResourceName, loadBalancerResource, config) { | ||
| const threshold = config.Threshold | ||
| return { | ||
| resourceName: makeResourceName('LoadBalancer', loadBalancerResourceName, 'RejectedConnectionCount'), | ||
| resource: createLoadBalancerAlarm( | ||
| `LoadBalancerRejectedConnectionCountAlarm_${loadBalancerResourceName}`, | ||
| `LoadBalancer Rejected Connection Count ${getStatisticName(config)} for ${loadBalancerResourceName} breaches ${threshold}`, | ||
| loadBalancerResourceName, | ||
| config.ComparisonOperator, | ||
| threshold, | ||
| 'RejectedConnectionCount', // metricName | ||
| config.Statistic, | ||
| config.Period, | ||
| config.ExtendedStatistic, | ||
| config.EvaluationPeriods, | ||
| config.TreatMissingData | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| function createHTTPCodeTarget5XXCountAlarm (targetGroupResourceName, targetGroupResource, loadBalancerName, config) { | ||
| const threshold = config.Threshold | ||
| return { | ||
| resourceName: makeResourceName('LoadBalancer', targetGroupResourceName, 'HTTPCodeTarget5XXCount'), | ||
| resource: createLoadBalancerTargetAlarm( | ||
| `LoadBalancerHTTPCodeTarget5XXCountAlarm_${targetGroupResourceName}`, | ||
| `LoadBalancer HTTP Code Target 5XX Count ${getStatisticName(config)} for ${targetGroupResourceName} breaches ${threshold}`, | ||
| targetGroupResourceName, | ||
| loadBalancerName, | ||
| config.ComparisonOperator, | ||
| threshold, | ||
| 'HTTPCode_Target_5XX_Count', | ||
| config.Statistic, | ||
| config.Period, | ||
| config.ExtendedStatistic, | ||
| config.EvaluationPeriods, | ||
| config.TreatMissingData | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| function createUnHealthyHostCountAlarm (targetGroupResourceName, targetGroupResource, loadBalancerName, config) { | ||
| const threshold = config.Threshold | ||
| return { | ||
| resourceName: makeResourceName('LoadBalancer', targetGroupResourceName, 'UnHealthyHostCount'), | ||
| resource: createLoadBalancerTargetAlarm( | ||
| `LoadBalancerUnHealthyHostCountAlarm_${targetGroupResourceName}`, | ||
| `LoadBalancer UnHealthy Host Count ${getStatisticName(config)} for ${targetGroupResourceName} breaches ${threshold}`, | ||
| targetGroupResourceName, | ||
| loadBalancerName, | ||
| config.ComparisonOperator, | ||
| threshold, | ||
| 'UnHealthyHostCount', | ||
| config.Statistic, | ||
| config.Period, | ||
| config.ExtendedStatistic, | ||
| config.EvaluationPeriods, | ||
| config.TreatMissingData | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| function createLambdaInternalErrorAlarm (targetGroupResourceName, targetGroupResource, loadBalancerName, config) { | ||
| const threshold = config.Threshold | ||
| return { | ||
| resourceName: makeResourceName('LoadBalancer', targetGroupResourceName, 'LambdaInternalError'), | ||
| resource: createLoadBalancerTargetAlarm( | ||
| `LoadBalancerLambdaInternalErrorAlarm_${targetGroupResourceName}`, | ||
| `LoadBalancer Lambda Internal Error ${getStatisticName(config)} for ${targetGroupResourceName} breaches ${threshold}`, | ||
| targetGroupResourceName, | ||
| loadBalancerName, | ||
| config.ComparisonOperator, | ||
| threshold, | ||
| 'LambdaInternalError', | ||
| config.Statistic, | ||
| config.Period, | ||
| config.ExtendedStatistic, | ||
| config.EvaluationPeriods, | ||
| config.TreatMissingData | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| function createLambdaUserErrorAlarm (targetGroupResourceName, targetGroupResource, loadBalancerName, config) { | ||
| const threshold = config.Threshold | ||
| return { | ||
| resourceName: makeResourceName('LoadBalancer', targetGroupResourceName, 'LambdaUserError'), | ||
| resource: createLoadBalancerTargetAlarm( | ||
| `LoadBalancerLambdaUserErrorAlarm_${targetGroupResourceName}`, | ||
| `LoadBalancer Lambda User Error ${getStatisticName(config)} for ${targetGroupResourceName} breaches ${threshold}`, | ||
| targetGroupResourceName, | ||
| loadBalancerName, | ||
| config.ComparisonOperator, | ||
| threshold, | ||
| 'LambdaUserError', | ||
| config.Statistic, | ||
| config.Period, | ||
| config.ExtendedStatistic, | ||
| config.EvaluationPeriods, | ||
| config.TreatMissingData | ||
| ) | ||
| } | ||
| } | ||
| } |
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