[DEVOPS-242] add clear redis caches workflow

.github/workflows/clear-azure-redis-cache.yaml

@@ -0,0 +1,70 @@
+name: Clear Azure Redis Cache
+
+on:
+ workflow_call:
+ inputs:
+ environment:
+ required: true
+ type: string
+ description: "Environment to clear caches for."
+ resourceGroupName:
+ default: "AMU_DevOps_RG"
+ type: string
+ description: "Name of Resource Group that the Azure Redis Instance is in."
+ secrets:
+ azureCredentials:
+ required: true
+
+jobs:
+ clear-redis-cache:
+ name: Clear Azure Redis Cache
+ runs-on: ubuntu-latest
+ steps:
+ - name: Checkout
+ uses: actions/checkout@v3
+
+ - name: Login to Azure
+ uses: Andrews-McMeel-Universal/cache-azure-login@v1
+ with:
+ azureCredentials: "${{ secrets.azureCredentials }}"
+
+ - name: Install Dependencies
+ uses: awalsh128/cache-apt-pkgs-action@v1
+ with:
+ packages: redis-tools
+ version: 1.0
+
+ # Script is adapted from https://github.com/Andrews-McMeel-Universal/azure-content-management_tool/blob/main/Scripts/rundeck/Flush-RedisCache.ps1
+ - name: Clear Redis Cache
+ uses: azure/powershell@v1
+ with:
+ inlineScript: |
+ # Check to see if Azure Redis Cache PowerShell Module is installed
+ Install-Module -Name Az.RedisCache -Confirm:$false -Force
+
+ # Get list of Redis instances using tags
+ $Redis = Get-AzRedisCache -ResourceGroupName "${{ inputs.resourceGroupName }}" | Where-Object { $_.Tag.Values -eq "${{ inputs.environment }}" }
+
+ # Loop through Redis instances
+ $Redis | ForEach-Object {
+ $RedisHostname = $_.HostName
+ $RedisPort = $_.Port
+ $RedisName = $_.Name
+ $RedisKey = (Get-AzRedisCacheKey -Name $RedisName -ResourceGroupName "${{ inputs.resourceGroupName }}").PrimaryKey
+
+ # Authenticate using Redis key and flush cache database
+ $RedisCommands = "AUTH $RedisKey
+ SELECT 0
+ FLUSHDB"
+ $RedisResult = $RedisCommands | redis-cli -h "$RedisHostname" -p "$RedisPort"
+
+ # Check if output from cache clearing command has correct status message
+ if ($RedisResult -match 'OK') {
+ Write-Host "Successfully flushed cache for $RedisHostname" -ForegroundColor Green
+ }
+ else {
+ Write-Error "Failed to clear cache for $RedisHostname"
+ }
+ }
+ azPSVersion: "latest"
+