diff options
Diffstat (limited to 'src/fluent-bit/plugins/in_opentelemetry/opentelemetry.c')
| -rw-r--r-- | src/fluent-bit/plugins/in_opentelemetry/opentelemetry.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/in_opentelemetry/opentelemetry.c b/src/fluent-bit/plugins/in_opentelemetry/opentelemetry.c new file mode 100644 index 000000000..5cd26f8e6 --- /dev/null +++ b/src/fluent-bit/plugins/in_opentelemetry/opentelemetry.c @@ -0,0 +1,200 @@ +/* -*- 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_downstream.h> +#include <fluent-bit/flb_network.h> +#include <fluent-bit/flb_config.h> + +#include "http_conn.h" +#include "opentelemetry.h" +#include "opentelemetry_config.h" + +/* + * For a server event, the collection event means a new client have arrived, we + * accept the connection and create a new TCP instance which will wait for + * JSON map messages. + */ +static int in_opentelemetry_collect(struct flb_input_instance *ins, + struct flb_config *config, void *in_context) +{ + struct flb_connection *connection; + struct http_conn *conn; + struct flb_opentelemetry *ctx; + + ctx = in_context; + + connection = flb_downstream_conn_get(ctx->downstream); + + if (connection == NULL) { + flb_plg_error(ctx->ins, "could not accept new connection"); + + return -1; + } + + flb_plg_trace(ctx->ins, "new TCP connection arrived FD=%i", connection->fd); + + conn = opentelemetry_conn_add(connection, ctx); + + if (conn == NULL) { + return -1; + } + + return 0; +} + +static int in_opentelemetry_init(struct flb_input_instance *ins, + struct flb_config *config, void *data) +{ + unsigned short int port; + int ret; + struct flb_opentelemetry *ctx; + + (void) data; + + /* Create context and basic conf */ + ctx = opentelemetry_config_create(ins); + if (!ctx) { + return -1; + } + ctx->collector_id = -1; + + /* Populate context with config map defaults and incoming properties */ + ret = flb_input_config_map_set(ins, (void *) ctx); + if (ret == -1) { + flb_plg_error(ctx->ins, "configuration error"); + opentelemetry_config_destroy(ctx); + return -1; + } + + /* Set the context */ + flb_input_set_context(ins, ctx); + + port = (unsigned short int) strtoul(ctx->tcp_port, NULL, 10); + + ctx->downstream = flb_downstream_create(FLB_TRANSPORT_TCP, + ins->flags, + ctx->listen, + port, + ins->tls, + config, + &ins->net_setup); + + if (ctx->downstream == NULL) { + flb_plg_error(ctx->ins, + "could not initialize downstream on %s:%s. Aborting", + ctx->listen, ctx->tcp_port); + + opentelemetry_config_destroy(ctx); + + return -1; + } + + flb_input_downstream_set(ctx->downstream, ctx->ins); + + flb_plg_info(ctx->ins, "listening on %s:%s", ctx->listen, ctx->tcp_port); + + if (ctx->successful_response_code != 200 && + ctx->successful_response_code != 201 && + ctx->successful_response_code != 204) { + flb_plg_error(ctx->ins, "%d is not supported response code. Use default 201", + ctx->successful_response_code); + ctx->successful_response_code = 201; + } + + /* Collect upon data available on the standard input */ + ret = flb_input_set_collector_socket(ins, + in_opentelemetry_collect, + ctx->downstream->server_fd, + config); + if (ret == -1) { + flb_plg_error(ctx->ins, "Could not set collector for IN_TCP input plugin"); + opentelemetry_config_destroy(ctx); + return -1; + } + + ctx->collector_id = ret; + + return 0; +} + +static int in_opentelemetry_exit(void *data, struct flb_config *config) +{ + struct flb_opentelemetry *ctx; + + (void) config; + + ctx = data; + + if (ctx != NULL) { + opentelemetry_config_destroy(ctx); + } + + return 0; +} + +/* Configuration properties map */ +static struct flb_config_map config_map[] = { + { + FLB_CONFIG_MAP_SIZE, "buffer_max_size", HTTP_BUFFER_MAX_SIZE, + 0, FLB_TRUE, offsetof(struct flb_opentelemetry, buffer_max_size), + "" + }, + + { + FLB_CONFIG_MAP_SIZE, "buffer_chunk_size", HTTP_BUFFER_CHUNK_SIZE, + 0, FLB_TRUE, offsetof(struct flb_opentelemetry, buffer_chunk_size), + "" + }, + + { + FLB_CONFIG_MAP_STR, "tag_key", NULL, + 0, FLB_TRUE, offsetof(struct flb_opentelemetry, tag_key), + "" + }, + { + FLB_CONFIG_MAP_INT, "successful_response_code", "201", + 0, FLB_TRUE, offsetof(struct flb_opentelemetry, successful_response_code), + "Set successful response code. 200, 201 and 204 are supported." + }, + { + FLB_CONFIG_MAP_BOOL, "raw_traces", "false", + 0, FLB_TRUE, offsetof(struct flb_opentelemetry, raw_traces), + "Forward traces without processing" + }, + + /* EOF */ + {0} +}; + +/* Plugin reference */ +struct flb_input_plugin in_opentelemetry_plugin = { + .name = "opentelemetry", + .description = "OpenTelemetry", + .cb_init = in_opentelemetry_init, + .cb_pre_run = NULL, + .cb_collect = in_opentelemetry_collect, + .cb_flush_buf = NULL, + .cb_pause = NULL, + .cb_resume = NULL, + .cb_exit = in_opentelemetry_exit, + .config_map = config_map, + .flags = FLB_INPUT_NET_SERVER | FLB_IO_OPT_TLS +}; |