protected override void ProcessRecord()
{
base.ProcessRecord();
try
{
client?.Dispose();
int timeout = GetPreferredTimeout();
WriteDebug($"Cmdlet Timeout : {timeout} milliseconds.");
client = new StreamAdminClient(AuthProvider, new Oci.Common.ClientConfiguration
{
RetryConfiguration = retryConfig,
TimeoutMillis = timeout,
ClientUserAgent = PSUserAgent
});
string region = GetPreferredRegion();
if (region != null)
{
WriteDebug("Choosing Region:" + region);
client.SetRegion(region);
}
if (Endpoint != null)
{
WriteDebug("Choosing Endpoint:" + Endpoint);
client.SetEndpoint(Endpoint);
}
}
catch (Exception ex)
{
TerminatingErrorDuringExecution(ex);
}
}
private static async Task <Stream> GetStream(StreamAdminClient adminClient, string streamId)
{
GetStreamRequest getStreamRequest = new GetStreamRequest
{
StreamId = streamId
};
GetStreamResponse getStreamResponse = await adminClient.GetStream(getStreamRequest);
return(getStreamResponse.Stream);
}
public static async Task MainNonRegionalClient()
{
logger.Info("Starting example");
var provider = new ConfigFileAuthenticationDetailsProvider("DEFAULT");
string compartmentId = Environment.GetEnvironmentVariable("OCI_COMPARTMENT_ID");
StreamAdminClient streamAdminClient = new StreamAdminClient(provider);
StreamClient streamClient = new StreamClient(provider);
string streamId = null;
try
{
Stream stream = await GetOrCreateStream(streamAdminClient, compartmentId, STREAM_NAME, PARTITIONS);
streamId = stream.Id;
// Streams are assigned a specific endpoint url based on where they are provisioned.
// Create a stream client using the provided message endpoint.
streamClient.SetEndpoint(stream.MessagesEndpoint);
// publish some messages to the stream
await PublishExampleMessages(streamClient, streamId);
// give the streaming service a second to propagate messages
await Task.Delay(1000);
// Use a cursor for getting messages
// A cursor can be created at a given partition/offset.
// This gives explicit offset management control to the consumer.
logger.Info("Starting a simple message loop with a partition cursor");
string partitionCursor = await GetCursorByPartition(streamClient, streamId, "0");
await SimpleMessageLoop(streamClient, streamId, partitionCursor);
}
catch (Exception e)
{
logger.Error($"NonRegional client example failed: {e}");
}
finally
{
// Cleanup; remember to delete streams which are not in use.
await DeleteStream(streamAdminClient, streamId);
// Stream deletion is an asynchronous operation, give it some time to complete.
GetStreamRequest getStreamRequest = new GetStreamRequest
{
StreamId = streamId
};
streamAdminClient.Waiters.ForStream(getStreamRequest, Stream.LifecycleStateEnum.Deleted).Execute();
streamAdminClient.Dispose();
logger.Info("End example");
}
}
private static async Task <Stream> CreateStream(StreamAdminClient client, string compartmentId, string streamName, int partitions)
{
logger.Info($"Creating stream {streamName} with {partitions} partitions");
CreateStreamDetails createStreamDetails = new CreateStreamDetails
{
CompartmentId = compartmentId,
Name = streamName,
Partitions = partitions
};
CreateStreamRequest createStreamRequest = new CreateStreamRequest
{
CreateStreamDetails = createStreamDetails
};
CreateStreamResponse createStreamResponse = await client.CreateStream(createStreamRequest);
return(createStreamResponse.Stream);
}
private static async Task DeleteStream(StreamAdminClient adminClient, String streamId)
{
logger.Info($"Deleting stream {streamId}");
DeleteStreamRequest deleteStreamRequest = new DeleteStreamRequest
{
StreamId = streamId
};
await adminClient.DeleteStream(deleteStreamRequest);
WaiterConfiguration waiterConfiguration = new WaiterConfiguration
{
MaxAttempts = 20,
GetNextDelayInSeconds = DelayStrategy.GetExponentialDelayInSeconds
};
GetStreamRequest getStreamRequest = new GetStreamRequest
{
StreamId = streamId
};
adminClient.Waiters.ForStream(getStreamRequest, waiterConfiguration, Stream.LifecycleStateEnum.Deleted).Execute();
}
private static async Task <Stream> GetOrCreateStream(StreamAdminClient client, string compartmentId, string streamName, int partitions)
{
ListStreamsRequest listRequest = new ListStreamsRequest
{
CompartmentId = compartmentId,
LifecycleState = Stream.LifecycleStateEnum.Active,
Name = streamName
};
ListStreamsResponse listStreamsResponse = await client.ListStreams(listRequest);
if (listStreamsResponse.Items.Count != 0)
{
// if we find an active stream with the correct name, we'll use it.
logger.Info($"An active stream named {streamName} was found");
string streamId = listStreamsResponse.Items[0].Id;
return(await GetStream(client, streamId));
}
logger.Info($"No active stream named {streamName} was found; creating it now");
Stream createdStream = await CreateStream(client, compartmentId, streamName, partitions);
// GetStream provides details about a specific stream.
// Since stream creation is asynchronous; we need to wait for the stream to become active.
WaiterConfiguration waiterConfiguration = new WaiterConfiguration
{
MaxAttempts = 20,
GetNextDelayInSeconds = DelayStrategy.GetExponentialDelayInSeconds
};
GetStreamRequest streamRequest = new GetStreamRequest
{
StreamId = createdStream.Id
};
Stream activeStream = client.Waiters.ForStream(streamRequest, waiterConfiguration, Stream.LifecycleStateEnum.Active).Execute().Stream;
// Give a little time for the stream to be ready.
await Task.Delay(1000);
return(activeStream);
}
