Deployment Package

UPGRADE_DIR=<UPGRADE_DIR>
runFromPackage=$(az functionapp config appsettings list --name <APP_NAME> --resource-group <RESOURCE_GROUP> --query "[?name=='WEBSITE_RUN_FROM_PACKAGE'].value | [0]" -o tsv)
if [[ "$runFromPackage" =~ ^https:// ]]; then
    curl --fail --location --silent --show-error --output "$UPGRADE_DIR/source-package.zip" "$runFromPackage"
    echo "Downloaded the remote deployment package without displaying its URL."
elif [[ "$runFromPackage" == "1" ]]; then
    echo "The package is stored in the app content share."
else
    echo "The app is not configured for run-from-package."
fi
unset runFromPackage

$runFromPackage = $null
try {
    $upgradeDir = '<UPGRADE_DIR>'
    $runFromPackage = az functionapp config appsettings list --name <APP_NAME> --resource-group <RESOURCE_GROUP> --query "[?name=='WEBSITE_RUN_FROM_PACKAGE'].value | [0]" -o tsv
    if ($LASTEXITCODE -ne 0) { throw 'Failed to read WEBSITE_RUN_FROM_PACKAGE.' }
    $runFromPackage = ([string]$runFromPackage).Trim()
    if ($runFromPackage -match '^https://') {
        Invoke-WebRequest -Uri $runFromPackage -OutFile (Join-Path $upgradeDir 'source-package.zip') -ErrorAction Stop
        Write-Output 'Downloaded the remote deployment package without displaying its URL.'
    }
    elseif ($runFromPackage -eq '1') {
        Write-Output 'The package is stored in the app content share.'
    }
    else {
        Write-Output 'The app is not configured for run-from-package.'
    }
}
finally {
    $runFromPackage = $null
}

az functionapp config appsettings list --name <APP_NAME> --resource-group <RESOURCE_GROUP> --query "[?name=='WEBSITE_CONTENTSHARE'].value" -o tsv

(
  set -e
  trap 'unset AZURE_STORAGE_CONNECTION_STRING' EXIT
  export AZURE_STORAGE_CONNECTION_STRING=$(az functionapp config appsettings list --name <APP_NAME> --resource-group <RESOURCE_GROUP> --query "[?name=='AzureWebJobsStorage'].value" -o tsv)
  az storage file download --share-name <CONTENT_SHARE> --path data/SitePackages/packagename.txt --dest <UPGRADE_DIR> --no-progress --output none
  PACKAGE_NAME=$(cat <UPGRADE_DIR>/packagename.txt)
  az storage file download --share-name <CONTENT_SHARE> --path "data/SitePackages/$PACKAGE_NAME" --dest <UPGRADE_DIR> --no-progress --output none
  rm <UPGRADE_DIR>/packagename.txt
  printf 'Downloaded package: %s\n' "$PACKAGE_NAME"
)

$previousConnectionString = $env:AZURE_STORAGE_CONNECTION_STRING
try {
    $env:AZURE_STORAGE_CONNECTION_STRING = az functionapp config appsettings list --name <APP_NAME> --resource-group <RESOURCE_GROUP> --query "[?name=='AzureWebJobsStorage'].value" -o tsv
    if ([string]::IsNullOrWhiteSpace($env:AZURE_STORAGE_CONNECTION_STRING)) { throw 'AzureWebJobsStorage was not found.' }
    az storage file download --share-name <CONTENT_SHARE> --path data/SitePackages/packagename.txt --dest <UPGRADE_DIR> --no-progress --output none
    if ($LASTEXITCODE -ne 0) { throw 'Failed to download packagename.txt.' }
    $packageName = (Get-Content <UPGRADE_DIR>/packagename.txt -Raw).Trim()
    az storage file download --share-name <CONTENT_SHARE> --path "data/SitePackages/$packageName" --dest <UPGRADE_DIR> --no-progress --output none
    if ($LASTEXITCODE -ne 0) { throw 'Failed to download the deployment package.' }
    Remove-Item <UPGRADE_DIR>/packagename.txt
    Write-Output "Downloaded package: $packageName"
}
finally {
    $env:AZURE_STORAGE_CONNECTION_STRING = $previousConnectionString
    $previousConnectionString = $null
}