Examples with HttpServerCommunicationsSession org.apache.nifi.remote.io.http.HttpServerCommunicationsSession used on opensource projects

Example 21 with HttpServerCommunicationsSession

use of org.apache.nifi.remote.io.http.HttpServerCommunicationsSession in project nifi by apache.

the class DataTransferResource method commitOutputPortTransaction.

@DELETE
@Consumes(MediaType.APPLICATION_OCTET_STREAM)
@Produces(MediaType.APPLICATION_JSON)
@Path("output-ports/{portId}/transactions/{transactionId}")
@ApiOperation(value = "Commit or cancel the specified transaction", response = TransactionResultEntity.class, authorizations = { @Authorization(value = "Write - /data-transfer/output-ports/{uuid}") })
@ApiResponses(value = { @ApiResponse(code = 400, message = "NiFi was unable to complete the request because it was invalid. The request should not be retried without modification."), @ApiResponse(code = 401, message = "Client could not be authenticated."), @ApiResponse(code = 403, message = "Client is not authorized to make this request."), @ApiResponse(code = 404, message = "The specified resource could not be found."), @ApiResponse(code = 409, message = "The request was valid but NiFi was not in the appropriate state to process it. Retrying the same request later may be successful."), @ApiResponse(code = 503, message = "NiFi instance is not ready for serving request, or temporarily overloaded. Retrying the same request later may be successful") })
public Response commitOutputPortTransaction(@ApiParam(value = "The response code. Available values are CONFIRM_TRANSACTION(12) or CANCEL_TRANSACTION(15).", required = true) @QueryParam(RESPONSE_CODE) Integer responseCode, @ApiParam(value = "A checksum calculated at client side using CRC32 to check flow file content integrity. It must match with the value calculated at server side.", required = true) @QueryParam(CHECK_SUM) @DefaultValue(StringUtils.EMPTY) String checksum, @ApiParam(value = "The output port id.", required = true) @PathParam("portId") String portId, @ApiParam(value = "The transaction id.", required = true) @PathParam("transactionId") String transactionId, @Context HttpServletRequest req, @Context ServletContext context, InputStream inputStream) {
    // authorize access
    serviceFacade.authorizeAccess(lookup -> {
        authorizeDataTransfer(lookup, ResourceType.OutputPort, portId);
    });
    final ValidateRequestResult validationResult = validateResult(req, portId, transactionId);
    if (validationResult.errResponse != null) {
        return validationResult.errResponse;
    }
    logger.debug("commitOutputPortTransaction request: portId={}, transactionId={}", portId, transactionId);
    final int transportProtocolVersion = validationResult.transportProtocolVersion;
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    final Peer peer = constructPeer(req, inputStream, out, portId, transactionId);
    final TransactionResultEntity entity = new TransactionResultEntity();
    try {
        HttpFlowFileServerProtocol serverProtocol = initiateServerProtocol(req, peer, transportProtocolVersion);
        String inputErrMessage = null;
        if (responseCode == null) {
            inputErrMessage = "responseCode is required.";
        } else if (ResponseCode.CONFIRM_TRANSACTION.getCode() != responseCode && ResponseCode.CANCEL_TRANSACTION.getCode() != responseCode) {
            inputErrMessage = "responseCode " + responseCode + " is invalid. ";
        }
        if (inputErrMessage != null) {
            entity.setMessage(inputErrMessage);
            entity.setResponseCode(ResponseCode.ABORT.getCode());
            return Response.status(Response.Status.BAD_REQUEST).entity(entity).build();
        }
        if (ResponseCode.CANCEL_TRANSACTION.getCode() == responseCode) {
            return cancelTransaction(transactionId, entity);
        }
        int flowFileSent = serverProtocol.commitTransferTransaction(peer, checksum);
        entity.setResponseCode(ResponseCode.CONFIRM_TRANSACTION.getCode());
        entity.setFlowFileSent(flowFileSent);
    } catch (HandshakeException e) {
        return responseCreator.handshakeExceptionResponse(e);
    } catch (Exception e) {
        HttpServerCommunicationsSession commsSession = (HttpServerCommunicationsSession) peer.getCommunicationsSession();
        logger.error("Failed to process the request", e);
        if (ResponseCode.BAD_CHECKSUM.equals(commsSession.getResponseCode())) {
            entity.setResponseCode(commsSession.getResponseCode().getCode());
            entity.setMessage(e.getMessage());
            Response.ResponseBuilder builder = Response.status(Response.Status.BAD_REQUEST).entity(entity);
            return noCache(builder).build();
        }
        return responseCreator.unexpectedErrorResponse(portId, transactionId, e);
    }
    return noCache(setCommonHeaders(Response.ok(entity), transportProtocolVersion, transactionManager)).build();
}

Example 22 with HttpServerCommunicationsSession

use of org.apache.nifi.remote.io.http.HttpServerCommunicationsSession in project nifi by apache.

the class DataTransferResource method receiveFlowFiles.

@POST
@Consumes(MediaType.APPLICATION_OCTET_STREAM)
@Produces(MediaType.TEXT_PLAIN)
@Path("input-ports/{portId}/transactions/{transactionId}/flow-files")
@ApiOperation(value = "Transfer flow files to the input port", response = String.class, authorizations = { @Authorization(value = "Write - /data-transfer/input-ports/{uuid}") })
@ApiResponses(value = { @ApiResponse(code = 400, message = "NiFi was unable to complete the request because it was invalid. The request should not be retried without modification."), @ApiResponse(code = 401, message = "Client could not be authenticated."), @ApiResponse(code = 403, message = "Client is not authorized to make this request."), @ApiResponse(code = 404, message = "The specified resource could not be found."), @ApiResponse(code = 409, message = "The request was valid but NiFi was not in the appropriate state to process it. Retrying the same request later may be successful."), @ApiResponse(code = 503, message = "NiFi instance is not ready for serving request, or temporarily overloaded. Retrying the same request later may be successful") })
public Response receiveFlowFiles(@ApiParam(value = "The input port id.", required = true) @PathParam("portId") String portId, @PathParam("transactionId") String transactionId, @Context HttpServletRequest req, @Context ServletContext context, InputStream inputStream) {
    // authorize access
    serviceFacade.authorizeAccess(lookup -> {
        authorizeDataTransfer(lookup, ResourceType.InputPort, portId);
    });
    final ValidateRequestResult validationResult = validateResult(req, portId, transactionId);
    if (validationResult.errResponse != null) {
        return validationResult.errResponse;
    }
    logger.debug("receiveFlowFiles request: portId={}", portId);
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    final Peer peer = constructPeer(req, inputStream, out, portId, transactionId);
    final int transportProtocolVersion = validationResult.transportProtocolVersion;
    try {
        HttpFlowFileServerProtocol serverProtocol = initiateServerProtocol(req, peer, transportProtocolVersion);
        int numOfFlowFiles = serverProtocol.getPort().receiveFlowFiles(peer, serverProtocol);
        logger.debug("finished receiving flow files, numOfFlowFiles={}", numOfFlowFiles);
        if (numOfFlowFiles < 1) {
            return Response.status(Response.Status.BAD_REQUEST).entity("Client should send request when there is data to send. There was no flow file sent.").build();
        }
    } catch (HandshakeException e) {
        return responseCreator.handshakeExceptionResponse(e);
    } catch (NotAuthorizedException e) {
        return responseCreator.unauthorizedResponse(e);
    } catch (BadRequestException | RequestExpiredException e) {
        return responseCreator.badRequestResponse(e);
    } catch (Exception e) {
        return responseCreator.unexpectedErrorResponse(portId, e);
    }
    String serverChecksum = ((HttpServerCommunicationsSession) peer.getCommunicationsSession()).getChecksum();
    return responseCreator.acceptedResponse(transactionManager, serverChecksum, transportProtocolVersion);
}

Example 23 with HttpServerCommunicationsSession

use of org.apache.nifi.remote.io.http.HttpServerCommunicationsSession in project nifi by apache.

the class DataTransferResource method commitInputPortTransaction.

@DELETE
@Consumes(MediaType.APPLICATION_OCTET_STREAM)
@Produces(MediaType.APPLICATION_JSON)
@Path("input-ports/{portId}/transactions/{transactionId}")
@ApiOperation(value = "Commit or cancel the specified transaction", response = TransactionResultEntity.class, authorizations = { @Authorization(value = "Write - /data-transfer/input-ports/{uuid}") })
@ApiResponses(value = { @ApiResponse(code = 400, message = "NiFi was unable to complete the request because it was invalid. The request should not be retried without modification."), @ApiResponse(code = 401, message = "Client could not be authenticated."), @ApiResponse(code = 403, message = "Client is not authorized to make this request."), @ApiResponse(code = 404, message = "The specified resource could not be found."), @ApiResponse(code = 409, message = "The request was valid but NiFi was not in the appropriate state to process it. Retrying the same request later may be successful."), @ApiResponse(code = 503, message = "NiFi instance is not ready for serving request, or temporarily overloaded. Retrying the same request later may be successful") })
public Response commitInputPortTransaction(@ApiParam(value = "The response code. Available values are BAD_CHECKSUM(19), CONFIRM_TRANSACTION(12) or CANCEL_TRANSACTION(15).", required = true) @QueryParam(RESPONSE_CODE) Integer responseCode, @ApiParam(value = "The input port id.", required = true) @PathParam("portId") String portId, @ApiParam(value = "The transaction id.", required = true) @PathParam("transactionId") String transactionId, @Context HttpServletRequest req, @Context ServletContext context, InputStream inputStream) {
    // authorize access
    serviceFacade.authorizeAccess(lookup -> {
        authorizeDataTransfer(lookup, ResourceType.InputPort, portId);
    });
    final ValidateRequestResult validationResult = validateResult(req, portId, transactionId);
    if (validationResult.errResponse != null) {
        return validationResult.errResponse;
    }
    logger.debug("commitInputPortTransaction request: portId={}, transactionId={}, responseCode={}", portId, transactionId, responseCode);
    final int transportProtocolVersion = validationResult.transportProtocolVersion;
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    final Peer peer = constructPeer(req, inputStream, out, portId, transactionId);
    final TransactionResultEntity entity = new TransactionResultEntity();
    try {
        HttpFlowFileServerProtocol serverProtocol = initiateServerProtocol(req, peer, transportProtocolVersion);
        HttpServerCommunicationsSession commsSession = (HttpServerCommunicationsSession) peer.getCommunicationsSession();
        // Pass the response code sent from the client.
        String inputErrMessage = null;
        if (responseCode == null) {
            inputErrMessage = "responseCode is required.";
        } else if (ResponseCode.BAD_CHECKSUM.getCode() != responseCode && ResponseCode.CONFIRM_TRANSACTION.getCode() != responseCode && ResponseCode.CANCEL_TRANSACTION.getCode() != responseCode) {
            inputErrMessage = "responseCode " + responseCode + " is invalid. ";
        }
        if (inputErrMessage != null) {
            entity.setMessage(inputErrMessage);
            entity.setResponseCode(ResponseCode.ABORT.getCode());
            return Response.status(Response.Status.BAD_REQUEST).entity(entity).build();
        }
        if (ResponseCode.CANCEL_TRANSACTION.getCode() == responseCode) {
            return cancelTransaction(transactionId, entity);
        }
        commsSession.setResponseCode(ResponseCode.fromCode(responseCode));
        try {
            int flowFileSent = serverProtocol.commitReceiveTransaction(peer);
            entity.setResponseCode(commsSession.getResponseCode().getCode());
            entity.setFlowFileSent(flowFileSent);
        } catch (IOException e) {
            if (ResponseCode.BAD_CHECKSUM.getCode() == responseCode && e.getMessage().contains("Received a BadChecksum response")) {
                // AbstractFlowFileServerProtocol throws IOException after it canceled transaction.
                // This is a known behavior and if we return 500 with this exception,
                // it's not clear if there is an issue at server side, or cancel operation has been accomplished.
                // Above conditions can guarantee this is the latter case, we return 200 OK here.
                entity.setResponseCode(ResponseCode.CANCEL_TRANSACTION.getCode());
                return noCache(Response.ok(entity)).build();
            } else {
                return responseCreator.unexpectedErrorResponse(portId, transactionId, e);
            }
        }
    } catch (HandshakeException e) {
        return responseCreator.handshakeExceptionResponse(e);
    } catch (Exception e) {
        return responseCreator.unexpectedErrorResponse(portId, transactionId, e);
    }
    return noCache(setCommonHeaders(Response.ok(entity), transportProtocolVersion, transactionManager)).build();
}

Example 24 with HttpServerCommunicationsSession

use of org.apache.nifi.remote.io.http.HttpServerCommunicationsSession in project nifi by apache.

the class TestDataTransferResource method testReceiveFlowFiles.

@Test
public void testReceiveFlowFiles() throws Exception {
    final HttpServletRequest req = createCommonHttpServletRequest();
    final DataTransferResource resource = getDataTransferResource();
    final HttpFlowFileServerProtocol serverProtocol = resource.getHttpFlowFileServerProtocol(null);
    final RootGroupPort port = mock(RootGroupPort.class);
    doReturn(port).when(serverProtocol).getPort();
    doAnswer(invocation -> {
        Peer peer = (Peer) invocation.getArguments()[0];
        ((HttpServerCommunicationsSession) peer.getCommunicationsSession()).setChecksum("server-checksum");
        return 7;
    }).when(port).receiveFlowFiles(any(Peer.class), any());
    final ServletContext context = null;
    final InputStream inputStream = null;
    final HttpRemoteSiteListener transactionManager = HttpRemoteSiteListener.getInstance(NiFiProperties.createBasicNiFiProperties(null, null));
    final String transactionId = transactionManager.createTransaction();
    final Response response = resource.receiveFlowFiles("port-id", transactionId, req, context, inputStream);
    transactionManager.cancelTransaction(transactionId);
    final Object entity = response.getEntity();
    assertEquals(202, response.getStatus());
    assertEquals("server-checksum", entity);
}