private async Task <bool> IsRunning(EcsDeployContext context, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var service = await DescribeService(context, cancellationToken);
return(service.RunningCount > 0);
}
private async Task UpdateService(EcsDeployContext context, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var request = new UpdateServiceRequest
{
Cluster = context.ClusterName,
Service = context.ServiceName,
DesiredCount = 1,
};
await ecs.UpdateServiceAsync(request, cancellationToken);
}
/// <summary>
/// Deploys an ECS service so that at least one container is running.
/// </summary>
/// <param name="context">Details about the service to deploy.</param>
/// <param name="cancellationToken">Token used to cancel the operation.</param>
/// <returns>The resulting task.</returns>
public async Task Deploy(EcsDeployContext context, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
if (await IsRunning(context, cancellationToken))
{
Console.WriteLine($"The {context.ServiceName} service is already running.");
return;
}
Console.WriteLine($"Deploying {context.ServiceName}...");
await UpdateService(context, cancellationToken);
await WaitForServiceToDeploy(context, cancellationToken);
Console.WriteLine($"Successfully deployed {context.ServiceName}");
}
private async Task WaitForServiceToDeploy(EcsDeployContext context, CancellationToken cancellationToken)
{
int tries = 0;
int maxTries = 60;
while (!await IsRunning(context, cancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
if (tries++ > maxTries)
{
throw new Exception("Deployment timed out.");
}
Console.WriteLine("Waiting for deployment to complete...");
await Task.Delay(5000, cancellationToken);
}
}
private async Task <Service> DescribeService(EcsDeployContext context, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var request = new DescribeServicesRequest
{
Cluster = context.ClusterName,
Services = new List <string> {
context.ServiceName
},
};
var response = await ecs.DescribeServicesAsync(request, cancellationToken);
var service = response.Services.First();
return(service);
}