arpadboda commented on a change in pull request #3647: NIFI-6530 - HTTP
SiteToSite server returns 201 in case no data is ava…
URL: https://github.com/apache/nifi/pull/3647#discussion_r321224543
##########
File path:
nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-api/src/main/java/org/apache/nifi/web/api/DataTransferResource.java
##########
@@ -205,9 +208,20 @@ public Response createPortTransaction(
final int transportProtocolVersion =
validationResult.transportProtocolVersion;
try {
- // Execute handshake.
- initiateServerProtocol(req, peer, transportProtocolVersion);
+ HttpFlowFileServerProtocol serverProtocol =
initiateServerProtocol(req, peer, transportProtocolVersion);
+
+ int protocolVersion =
Integer.parseUnsignedInt(req.getHeader(PROTOCOL_VERSION));
+ if ((protocolVersion >= 2) && PORT_TYPE_OUTPUT.equals(portType)) {
+ List<Connection> connectionList =
serverProtocol.getPort().getIncomingConnections();
+ if (connectionList.stream().allMatch(c ->
c.getFlowFileQueue().isEmpty())) {
+ // Transaction could be created, but there is nothing to
transfer. Just return 200.
+ logger.debug("Output port has no flowfiles to transfer,
returning 200");
+ return
noCache(Response.status(Response.Status.NO_CONTENT)).type(MediaType.TEXT_PLAIN).entity("No
flowfiles available").build();
Review comment:
Good spot, thank you, fixed!
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