bakaid commented on a change in pull request #590: MINIFICPP-621 Nanofi Tailfile example URL: https://github.com/apache/nifi-minifi-cpp/pull/590#discussion_r294879206
########## File path: nanofi/ecu/tail_file.c ########## @@ -0,0 +1,214 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include "api/nanofi.h" +#include "core/string_utils.h" +#include "core/cstructs.h" +#include "core/file_utils.h" +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <limits.h> +#include <signal.h> +#include <sys/stat.h> + +struct flow_file_records * flowfiles = NULL; +nifi_instance * instance = NULL; +standalone_processor * proc = NULL; +int file_offset = 0; +int stopped = 0; +flow_file_list ff_list; +token_list tks; + +void signal_handler(int signum) { + if (signum == SIGINT || signum == SIGTERM) { + stopped = 1; + } +} + +void transmit_flow_files(nifi_instance * instance) { + flow_file_list_node * head = ff_list.head; + while (head) { + transmit_flowfile(head->ff_record, instance); + head = head->next; + } +} + +void set_offset(int offset) { + file_offset = offset; +} + +int get_offset() { + return file_offset; +} + +void on_trigger_callback(processor_session * ps, processor_context * ctx) { + + char file_path[4096]; + char delimiter[2]; + + if (get_property(ctx, "file_path", file_path, 50) != 0) { + return; + } + + if (get_property(ctx, "delimiter", delimiter, 2) != 0) { + return; + } + + if (strlen(delimiter) == 0) { + printf("Delimiter not specified or it is empty\n"); + return; + } + char delim = '\0'; + if (strlen(delimiter) > 0) { + delim = delimiter[0]; + } + + if (delim == '\0') { + printf("Invalid delimiter \n"); + return; + } + + if (delim == '\\') { + if (strlen(delimiter) > 1) { + switch (delimiter[1]) { + case 'r': + delim = '\r'; + break; + case 't': + delim = '\t'; + break; + case 'n': + delim = '\n'; + break; + case '\\': + delim = '\\'; + break; + default: Review comment: Returning an error here instead of silently using \ as the delimiter would be better, but I can live with it. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
