private void ErrorExtension_ConnectionError(
object sender,
string e)
{
// authentication failure
if (string.Equals(e, "403::Handshake denied", StringComparison.OrdinalIgnoreCase) ||
string.Equals(e, "403:denied_by_security_policy:create_denied", StringComparison.OrdinalIgnoreCase) ||
string.Equals(e, "403::unknown client", StringComparison.OrdinalIgnoreCase))
{
_logger.LogWarning("Handled CometD Exception: {message}", e);
// 1. Disconnect existing client.
Disconnect();
// 2. Invalidate the access token.
_tokenResponse.Invalidate();
_logger.LogDebug("Invalidate token for {name} ...", nameof(BayeuxClient));
// 3. Recreate BayeuxClient and populate it with a new transport with new security headers.
CreateBayeuxClient();
// 4. Invoke the Reconnect Event
Reconnect?.Invoke(this, true);
}
else
{
_logger.LogError("{name} failed with the following message: {message}", nameof(ResilientStreamingClient), e);
}
}
public async Task End2End()
{
var testInstance = new AsyncExpiringLazy <TokenResponse>(async metadata =>
{
await Task.Delay(1000);
return(new ExpirationMetadata <TokenResponse>
{
Result = new TokenResponse
{
AccessToken = Guid.NewGuid().ToString()
}, ValidUntil = DateTimeOffset.UtcNow.AddSeconds(2)
});
});
// 1. check if value is created - shouldn't
Assert.False(await testInstance.IsValueCreated());
// 2. fetch lazy expiring value
var token = await testInstance.Value();
// 3a. verify it is created now
Assert.True(await testInstance.IsValueCreated());
// 3b. verify it is not null
Assert.NotNull(token.AccessToken);
// 4. fetch the value again. Since it's lifetime is 2 seconds, it should be still the same
var token2 = await testInstance.Value();
Assert.Same(token, token2);
// 5. sleep for 2 seconds to let the value expire
await Task.Delay(2000);
// 6a. verify the value expired
Assert.False(await testInstance.IsValueCreated());
// 6b. fetch again
var token3 = await testInstance.Value();
// 7. verify we now have a new (recreated) value - as the previous one expired
Assert.NotSame(token2, token3);
// 8. invalidate the value manually before it has a chance to expire
await testInstance.Invalidate();
// 9. check if value is created - shouldn't anymore
Assert.False(await testInstance.IsValueCreated());
}
protected virtual void ErrorExtension_ConnectionError(
object sender,
string e)
{
// authentication failure
if (string.Equals(e, "403::Handshake denied", StringComparison.OrdinalIgnoreCase) ||
string.Equals(e, "403:denied_by_security_policy:create_denied", StringComparison.OrdinalIgnoreCase) ||
string.Equals(e, "403::unknown client", StringComparison.OrdinalIgnoreCase) ||
string.Equals(e, "401::Authentication invalid", StringComparison.OrdinalIgnoreCase))
{
_logger.LogWarning("Handled CometD Exception: {message}", e);
// 1. Disconnect existing client.
Disconnect();
// 2. Invalidate the access token.
_tokenResponse.Invalidate();
_logger.LogDebug("Invalidate token for {name} ...", nameof(BayeuxClient));
// 3. Recreate BayeuxClient and populate it with a new transport with new security headers.
CreateBayeuxClient();
// 4. Invoke the Reconnect Event
Reconnect?.Invoke(this, true);
}
else if (e.Contains("you provided was invalid"))
{
var start = e.IndexOf('{');
var end = e.IndexOf('}');
var replayIdString = e.Substring(start + 1, end - (start + 1));
if (int.TryParse(replayIdString, out var replayId))
{
InvalidReplayIdStrategy(replayId);
}
}
else
{
_logger.LogError("{name} failed with the following message: {message}", nameof(ResilientStreamingClient), e);
}
}
private IAsyncPolicy GetAuthenticationRetryPolicy()
{
return(Policy
.Handle <ForceApiException>(x => x.Message.Contains("ErrorCode INVALID_SESSION_ID"))
.RetryAsync(
retryCount: _options.Retry,
onRetry: (ex, count, context) =>
{
var methodName = context[PolicyContextMethod] ?? "MethodNotSpecified";
_logger.LogWarning(
"{Method} attempting to re-authenticate Retry {Count} of {Total} for named policy {PolicyKey}, due to {Message}.",
methodName,
count,
_options.Retry,
context.PolicyKey,
ex.Message);
_forceClient.Invalidate();
})
.WithPolicyKey($"{nameof(ResilientForceClient)}RetryAsync"));
}
