Failed to write Azure Bicep templates: Could not find file with AzurePublishingContext #13967
Description
Using an AzureBicepResource with a template file and using AzurePublishingContext to publish all the bicep files, results in an exception:
12:59:32 (publish-custom) ✗ Failed to write Azure Bicep templates: Could not find file
'C:\Users\eerhardt\AppData\Local\Temp\aspire-bicepwqooyya3.vit\front-door-appservice.bicep'. (0.0s)
12:59:32 (publish-custom) ✗ [ERR] Failed to write Azure Bicep templates to
C:\Users\eerhardt\source\repos\AspireApp4\AspireApp4.AppHost\aspire-output\root\templates
12:59:32 (publish-custom) ✗ [ERR] Step 'publish-custom' failed.
12:59:32 (publish-custom) ✗ Step 'publish-custom' failed: Could not find file
'C:\Users\eerhardt\AppData\Local\Temp\aspire-bicepwqooyya3.vit\front-door-appservice.bicep'.
12:59:32 (pipeline-execution) ✗ [ERR] Step 'publish-custom' failed: Could not find file
'C:\Users\eerhardt\AppData\Local\Temp\aspire-bicepwqooyya3.vit\front-door-appservice.bicep'.
12:59:32 (pipeline-execution) ✗ Failed
Repo steps
aspire do pubilsh-custom the following AppHost:
#pragma warning disable ASPIREPIPELINES001
#pragma warning disable ASPIREPIPELINES004
#pragma warning disable ASPIREAZURE001
using Aspire.Hosting.Azure;
using Aspire.Hosting.Pipelines;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
var builder = DistributedApplication.CreateBuilder(args);
var apiService = builder.AddProject<Projects.AspireApp4_ApiService>("apiservice")
.WithHttpHealthCheck("/health");
var frontend = builder.AddProject<Projects.AspireApp4_Web>("webfrontend")
.WithExternalHttpEndpoints()
.WithHttpHealthCheck("/health")
.WithReference(apiService)
.WaitFor(apiService);
builder.AddAzureFrontDoor("afd", frontend);
builder.Pipeline.AddStep("publish-custom", async context =>
{
var outputPath = Path.Combine(context.Services.GetRequiredService<IPipelineOutputService>().GetOutputDirectory(), "root");
var outputDirectory = new DirectoryInfo(outputPath);
outputDirectory.Create();
var templates = new DirectoryInfo(Path.Join(outputDirectory.FullName, "templates"));
templates.Create();
var azureProvisioningOptions = context.Services.GetRequiredService<IOptions<AzureProvisioningOptions>>().Value;
var azPublishContext = new AzurePublishingContext(templates.FullName, azureProvisioningOptions, context.Services, context.Logger, context.ReportingStep);
var azureEnvironmentResource = context.Model.Resources.OfType<AzureEnvironmentResource>().FirstOrDefault() ?? throw new InvalidOperationException("AzureEnvironmentResource not found in the model.");
await azPublishContext.WriteModelAsync(context.Model, azureEnvironmentResource, context.CancellationToken).ConfigureAwait(false);
});
builder.Build().Run();
internal static class DeploymentExtensions
{
public static IResourceBuilder<AzureBicepResource> AddAzureFrontDoor(
this IDistributedApplicationBuilder builder,
[ResourceName] string name,
IResourceBuilder<ProjectResource> appServiceWebsite)
{
builder.AddAzureProvisioning();
var frontDoorName = $"{name}-afd";
var frontdoor = new AzureBicepResource(frontDoorName, "front-door-appservice.bicep");
return builder.AddResource(frontdoor)
.WithParameter("frontDoorName", frontDoorName)
.WithParameter("appServiceHostName", appServiceWebsite.Resource.Name);
}
}with front-door-appservice.bicep:
param frontDoorName string
param appServiceHostName string
@description('Location for all resources, needed because Aspire always injects a location parameter')
param location string = resourceGroup().location
resource frontDoorProfile 'Microsoft.Cdn/profiles@2024-02-01' = {
name: take('${frontDoorName}${uniqueString(resourceGroup().id)}', 50)
location: 'Global'
sku: {
name: 'Premium_AzureFrontDoor'
}
}
resource frontDoorEndpoint 'Microsoft.Cdn/profiles/afdEndpoints@2025-06-01' = {
parent: frontDoorProfile
name: take('${frontDoorName}-endp-${uniqueString(resourceGroup().id)}', 50)
location: 'Global'
properties: {
enabledState: 'Enabled'
}
}
resource originGroup 'Microsoft.Cdn/profiles/originGroups@2025-06-01' = {
parent: frontDoorProfile
name: take('appservice-origin-group-${uniqueString(resourceGroup().id)}', 50)
properties: {
loadBalancingSettings: {
sampleSize: 4
successfulSamplesRequired: 3
additionalLatencyInMilliseconds: 50
}
healthProbeSettings: {
probePath: '/'
probeRequestType: 'HEAD'
probeProtocol: 'Https'
probeIntervalInSeconds: 240
}
sessionAffinityState: 'Disabled'
}
}
resource origin 'Microsoft.Cdn/profiles/originGroups/origins@2025-06-01' = {
parent: originGroup
name: take('appservice-origin-${uniqueString(resourceGroup().id)}', 50)
properties: {
hostName: take('${appServiceHostName}-${uniqueString(resourceGroup().id)}.azurewebsites.net', 50)
httpPort: 80
httpsPort: 443
originHostHeader: take('${appServiceHostName}-${uniqueString(resourceGroup().id)}.azurewebsites.net', 50)
priority: 1
weight: 1000
enabledState: 'Enabled'
enforceCertificateNameCheck: true
}
}
resource route 'Microsoft.Cdn/profiles/afdEndpoints/routes@2025-06-01' = {
parent: frontDoorEndpoint
name: take('default-route-${uniqueString(resourceGroup().id)}', 50)
dependsOn: [
origin
]
properties: {
cacheConfiguration: {
compressionSettings: {
isCompressionEnabled: true
contentTypesToCompress: [
'text/plain'
'text/html'
'text/css'
'application/javascript'
'application/json'
'image/svg+xml'
]
}
queryStringCachingBehavior: 'IgnoreQueryString'
}
originGroup: {
id: originGroup.id
}
supportedProtocols: [
'Http'
'Https'
]
patternsToMatch: [
'/*'
]
forwardingProtocol: 'HttpsOnly'
linkToDefaultDomain: 'Enabled'
httpsRedirect: 'Enabled'
enabledState: 'Enabled'
originPath: '/'
ruleSets: []
}
}
output endpointUrl string = 'https://${frontDoorEndpoint.properties.hostName}'This should pass successfully. It worked before Aspire 13.1. I believe the change that caused this issue was: 5b92c02#diff-86b4ae887912c3dbe34b3c97beb99e9b12272fd077b7b57e675818b0a83205b5