And*_*rew 6 c# azure azure-functions asp.net-core-2.0
所以我写了一个 azure 函数,它在本地工作得很好。我相信这归结为拥有local.setting.json文件。但是当我将它发布到 azure 时,该功能不起作用,因为它找不到我定义的设置值。来自 Web 应用程序和控制台驱动的方法,我们将拥有与每个环境相关联的不同配置文件。我怎样才能让它工作,这样我就可以有多个settings.json文件,例如一个用于 dev、stag 和 prod 环境?最终的结果是使用 octopus deploy 来部署它,但在这一点上,如果我什至不能让它与发布一起工作,那么就没有机会这样做了。
我很困惑为什么这些信息不容易获得,因为假设这是一件常见的事情?
好的,我现在可以工作了:) 因为我们使用 octopus 部署,所以我们不需要多个配置文件,所以我们只有一个appsettings.Release.json文件,该文件也根据正在部署的环境获取替换值。
下面是主要功能代码。
public static class Function
{
// Format in a CRON Expression e.g. {second} {minute} {hour} {day} {month} {day-of-week}
// https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-timer
// [TimerTrigger("0 59 23 * * *") = 11:59pm
[FunctionName("Function")]
public static void Run([TimerTrigger("0 59 23 * * *")]TimerInfo myTimer, ILogger log)
{
// If running in debug then we dont want to load the appsettings.json file, this has its variables substituted in octopus
// Running locally will use the local.settings.json file instead
#if DEBUG
IConfiguration config = new ConfigurationBuilder()
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
#else
IConfiguration config = Utils.GetSettingsFromReleaseFile();
#endif
// Initialise dependency injections
var serviceProvider = Bootstrap.ConfigureServices(log4Net, config);
var retryCount = Convert.ToInt32(config["RetryCount"]);
int count = 0;
while (count < retryCount)
{
count++;
try
{
var business = serviceProvider.GetService<IBusiness>();
business.UpdateStatusAndLiability();
return;
}
catch (Exception e)
{
// Log your error
}
}
}
}
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Utils.cs文件如下所示
public static class Utils
{
public static string LoadSettingsFromFile(string environmentName)
{
var executableLocation = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
// We need to go back up one level as the appseetings.Release.json file is not put in the bin directory
var actualPathToConfig = Path.Combine(executableLocation, $"..\\appsettings.{environmentName}.json");
using (StreamReader reader = new StreamReader(actualPathToConfig))
{
return reader.ReadToEnd();
}
}
public static IConfiguration GetSettingsFromReleaseFile()
{
var json = Utils.LoadSettingsFromFile("Release");
var memoryFileProvider = new InMemoryFileProvider(json);
var config = new ConfigurationBuilder()
.AddJsonFile(memoryFileProvider, "appsettings.json", false, false)
.Build();
return config;
}
}
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appsettings.Release.json在 Visual Studio 中设置为Content和Copy Always。看起来像这样
{
"RetryCount": "#{WagonStatusAndLiabilityRetryCount}",
"RetryWaitInSeconds": "#{WagonStatusAndLiabilityRetryWaitInSeconds}",
"DefaultConnection": "#{YourConnectionString}"
}
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实际上,我相信您已经有一个 appsettings.config 文件并跳过 appsettings.Release.json 文件,但这正在工作,您现在可以用它做您想做的事情。