public Func <string> GetToken(
string username,
string password,
string authorityUrl,
string clientName,
string apiName,
string apiSecret)
{
return(() =>
{
if (null != _response)
{
var jwttoken = _jwthandler.ReadToken(_response.AccessToken);
if (jwttoken.ValidTo > DateTime.Now)
{
return _response.AccessToken;
}
}
var client = new HttpClient();
var request = new DiscoveryDocumentRequest()
{
Policy =
{
RequireHttps = false,
RequireKeySet = false,
ValidateEndpoints = false,
ValidateIssuerName = false
},
Address = authorityUrl
};
return RetryPolicies.WaitAndRetryForever <Exception, string>(
attemptDelay: TimeSpan.FromMilliseconds(10000),
onRetry: (ex, timespan) => this.LogError($"Failed to reach auth server {authorityUrl} - [{ex}]- [{ex.InnerException}]"),
doTry: () =>
{
var disco = client.GetDiscoveryDocumentAsync(request).Result;
if (disco.IsError)
{
throw new Exception(disco.Error);
}
_response = client.RequestPasswordTokenAsync(new PasswordTokenRequest
{
Address = disco.TokenEndpoint,
ClientId = clientName,
ClientSecret = apiSecret,
Scope = apiName,
UserName = username,
Password = password
}).Result;
if (_response.IsError)
{
throw new Exception("Failed to acquire token", _response.Exception);
}
return _response.AccessToken;
}
);
});
}
public Task StartAsync(CancellationToken cancellationToken)
{
_cancellationTokens = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
var address = _server.Features.Get <IServerAddressesFeature>().Addresses.First();
var uri = new Uri(address);
Uri hostUri = null;
#if DEBUG
//if run on dev machine, use provided hosturl
hostUri = uri;
#elif COMPOSE
//if run via docker-compose, use the container id, resolved by docker cluster dns
hostUri = new Uri($"{uri.Scheme}://{_serviceConfiguration.Id}:{uri.Port}");
#else
//if run on kubernetes, use service name which is resolved by the cluster dns
hostUri = new Uri($"{uri.Scheme}://{_serviceConfiguration.Name}:{uri.Port}");
#endif
_registrationID = $"{_serviceConfiguration.Id}-{hostUri.Port}";
var registration = new AgentServiceRegistration()
{
ID = _registrationID,
Name = _serviceConfiguration.Name,
Address = hostUri.Host,
Port = hostUri.Port,
Checks = new[] {
new AgentCheckRegistration()
{
HTTP = $"{hostUri.Scheme}://{hostUri.Host}:{hostUri.Port}{ConsulRegistrationConstants.HealthCheckUrl}",
Notes = $"Checks {ConsulRegistrationConstants.HealthCheckUrl} on host",
Timeout = TimeSpan.FromSeconds(3),
TLSSkipVerify = true,
Interval = TimeSpan.FromSeconds(10)
}
}
};
RetryPolicies.WaitAndRetryForever <Exception>(
attemptDelay: TimeSpan.FromMilliseconds(_retryTimeout),
onRetry: (ex, timespan) => this.LogError($"Failed to register {_serviceConfiguration.Id} [{hostUri}] in Consul [{_serviceConfiguration.Consul}] - [{ex.Message}]"),
doTry: () =>
{
this.LogInformation($"Try registering {_serviceConfiguration.Id} [{hostUri}] in Consul [{_serviceConfiguration.Consul}]");
_consulClient.Agent.ServiceDeregister(registration.ID, _cancellationTokens.Token).Wait();
_consulClient.Agent.ServiceRegister(registration, _cancellationTokens.Token).Wait();
}
);
this.LogInformation($"Registered {_serviceConfiguration.Id} [{hostUri}] in Consul [{_serviceConfiguration.Consul}]");
_lifetime.ApplicationStopping.Register(() =>
{
_consulClient.Agent.ServiceDeregister(registration.ID).Wait();
});
return(Task.CompletedTask);
}
