diff options
Diffstat (limited to 'src/fluent-bit/plugins/in_udp/udp.c')
| -rw-r--r-- | src/fluent-bit/plugins/in_udp/udp.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/in_udp/udp.c b/src/fluent-bit/plugins/in_udp/udp.c new file mode 100644 index 000000000..ad5a28497 --- /dev/null +++ b/src/fluent-bit/plugins/in_udp/udp.c @@ -0,0 +1,197 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ + +/* Fluent Bit + * ========== + * Copyright (C) 2015-2022 The Fluent Bit Authors + * + * Licensed 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 <fluent-bit/flb_input_plugin.h> +#include <fluent-bit/flb_network.h> +#include <msgpack.h> + +#include "udp.h" +#include "udp_conn.h" +#include "udp_config.h" + +static int in_udp_collect(struct flb_input_instance *in, + struct flb_config *config, + void *in_context) +{ + struct flb_connection *connection; + struct flb_in_udp_config *ctx; + + ctx = in_context; + + connection = flb_downstream_conn_get(ctx->downstream); + + if (connection == NULL) { + flb_plg_error(ctx->ins, "could get UDP server dummy connection"); + + return -1; + } + + return udp_conn_event(connection); +} + +/* Initialize plugin */ +static int in_udp_init(struct flb_input_instance *in, + struct flb_config *config, void *data) +{ + struct flb_connection *connection; + unsigned short int port; + int ret; + struct flb_in_udp_config *ctx; + + (void) data; + + /* Allocate space for the configuration */ + ctx = udp_config_init(in); + + if (ctx == NULL) { + return -1; + } + + ctx->collector_id = -1; + ctx->ins = in; + + /* Set the context */ + flb_input_set_context(in, ctx); + + port = (unsigned short int) strtoul(ctx->port, NULL, 10); + + ctx->downstream = flb_downstream_create(FLB_TRANSPORT_UDP, + in->flags, + ctx->listen, + port, + in->tls, + config, + &in->net_setup); + + if (ctx->downstream == NULL) { + flb_plg_error(ctx->ins, + "could not initialize downstream on %s:%s. Aborting", + ctx->listen, ctx->port); + + udp_config_destroy(ctx); + + return -1; + } + + flb_input_downstream_set(ctx->downstream, ctx->ins); + + connection = flb_downstream_conn_get(ctx->downstream); + + if (connection == NULL) { + flb_plg_error(ctx->ins, "could not get UDP server dummy connection"); + + udp_config_destroy(ctx); + + return -1; + } + + ctx->dummy_conn = udp_conn_add(connection, ctx); + + if (ctx->dummy_conn == NULL) { + flb_plg_error(ctx->ins, "could not track UDP server dummy connection"); + + udp_config_destroy(ctx); + + return -1; + } + + /* Collect upon data available on the standard input */ + ret = flb_input_set_collector_socket(in, + in_udp_collect, + ctx->downstream->server_fd, + config); + if (ret == -1) { + flb_plg_error(ctx->ins, "Could not set collector for IN_UDP input plugin"); + udp_config_destroy(ctx); + + return -1; + } + + ctx->collector_id = ret; + ctx->collector_event = flb_input_collector_get_event(ret, in); + + if (ret == -1) { + flb_plg_error(ctx->ins, "Could not get collector event"); + udp_config_destroy(ctx); + + return -1; + } + + return 0; +} + +static int in_udp_exit(void *data, struct flb_config *config) +{ + struct flb_in_udp_config *ctx; + + (void) *config; + + ctx = data; + + if (ctx->dummy_conn != NULL) { + udp_conn_del(ctx->dummy_conn); + } + + udp_config_destroy(ctx); + + return 0; +} + +static struct flb_config_map config_map[] = { + { + FLB_CONFIG_MAP_STR, "format", (char *)NULL, + 0, FLB_TRUE, offsetof(struct flb_in_udp_config, format_name), + "Set the format: json or none" + }, + { + FLB_CONFIG_MAP_STR, "separator", (char *)NULL, + 0, FLB_TRUE, offsetof(struct flb_in_udp_config, raw_separator), + "Set separator" + }, + { + FLB_CONFIG_MAP_STR, "chunk_size", (char *)NULL, + 0, FLB_TRUE, offsetof(struct flb_in_udp_config, chunk_size_str), + "Set the chunk size" + }, + { + FLB_CONFIG_MAP_STR, "buffer_size", (char *)NULL, + 0, FLB_TRUE, offsetof(struct flb_in_udp_config, buffer_size_str), + "Set the buffer size" + }, + { + FLB_CONFIG_MAP_STR, "source_address_key", (char *) NULL, + 0, FLB_TRUE, offsetof(struct flb_in_udp_config, source_address_key), + "Key where the source address will be injected" + }, + /* EOF */ + {0} +}; + +/* Plugin reference */ +struct flb_input_plugin in_udp_plugin = { + .name = "udp", + .description = "UDP", + .cb_init = in_udp_init, + .cb_pre_run = NULL, + .cb_collect = in_udp_collect, + .cb_flush_buf = NULL, + .cb_exit = in_udp_exit, + .config_map = config_map, + .flags = FLB_INPUT_NET_SERVER, +}; |