protected async Task CheckConfigurationBlob(ConfigStorageAccess configStorage)
{
var container = new BlobContainerClient(configStorage.ConnectionString, configStorage.ContainerName);
await container.CreateIfNotExistsAsync(PublicAccessType.None);
var blobClient = container.GetBlobClient(ConfigFileName);
if (await blobClient.ExistsAsync())
{
return;
}
string content = JsonConvert.SerializeObject(GetDefaultSettings(), new JsonSerializerSettings()
{
Formatting = Formatting.Indented,
ContractResolver = new CamelCasePropertyNamesContractResolver()
});
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(content)))
{
await blobClient.UploadAsync(stream, new BlobHttpHeaders()
{
ContentType = "application/json"
});
}
}
/// <summary>
/// Конфигурация загружается из переменных окружения
/// И из Azure Storage если заданы переменные окружения
/// ConfigStorageUri
/// ConfigStorageSas
/// ConfigStorageContainer
///
/// или из файла appsettings.local.json если переменные не заданы
/// </summary>
/// <param name="builder"></param>
public override void ConfigureAppConfiguration(IFunctionsConfigurationBuilder builder)
{
FunctionsHostBuilderContext context = builder.GetContext();
//Get enviroment variables for config file access
var configStorage = new ConfigStorageAccess();
if (!configStorage.Configured)
{
builder.ConfigurationBuilder
.AddJsonFile(Path.Combine(context.ApplicationRootPath, ConfigFileNameLocal), false, false)
.AddEnvironmentVariables();
}
else
{
CheckConfigurationBlob(configStorage).Wait();
var azureBlobFileProvider = new AzureBlobFileProvider(new AzureBlobOptions()
{
ConnectionString = configStorage.ConnectionString,
DocumentContainer = configStorage.ContainerName
});
builder.ConfigurationBuilder
.AddJsonFile(azureBlobFileProvider, ConfigFileName, false, false)
.AddEnvironmentVariables();
}
}
