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-rw-r--r--fluent-bit/plugins/in_netif/CMakeLists.txt4
-rw-r--r--fluent-bit/plugins/in_netif/in_netif.c392
-rw-r--r--fluent-bit/plugins/in_netif/in_netif.h70
3 files changed, 466 insertions, 0 deletions
diff --git a/fluent-bit/plugins/in_netif/CMakeLists.txt b/fluent-bit/plugins/in_netif/CMakeLists.txt
new file mode 100644
index 00000000..952e7b3c
--- /dev/null
+++ b/fluent-bit/plugins/in_netif/CMakeLists.txt
@@ -0,0 +1,4 @@
+set(src
+ in_netif.c)
+
+FLB_PLUGIN(in_netif "${src}" "")
diff --git a/fluent-bit/plugins/in_netif/in_netif.c b/fluent-bit/plugins/in_netif/in_netif.c
new file mode 100644
index 00000000..f82c685a
--- /dev/null
+++ b/fluent-bit/plugins/in_netif/in_netif.c
@@ -0,0 +1,392 @@
+/* -*- 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_config.h>
+#include <fluent-bit/flb_utils.h>
+#include <fluent-bit/flb_pack.h>
+
+#include <stdio.h>
+#include "in_netif.h"
+
+struct entry_define entry_name_linux[] = {
+ {"rx.bytes", FLB_TRUE},
+ {"rx.packets", FLB_TRUE},
+ {"rx.errors", FLB_TRUE},
+ {"rx.drop", FLB_FALSE},
+ {"rx.fifo", FLB_FALSE},
+ {"rx.frame", FLB_FALSE},
+ {"rx.compressed", FLB_FALSE},
+ {"rx.multicast", FLB_FALSE},
+ {"tx.bytes", FLB_TRUE},
+ {"tx.packets", FLB_TRUE},
+ {"tx.errors", FLB_TRUE},
+ {"tx.drop", FLB_FALSE},
+ {"tx.fifo", FLB_FALSE},
+ {"tx.collisions", FLB_FALSE},
+ {"tx.carrier", FLB_FALSE},
+ {"tx.compressepd", FLB_FALSE}
+};
+
+static int config_destroy(struct flb_in_netif_config *ctx)
+{
+ if (ctx->log_encoder != NULL) {
+ flb_log_event_encoder_destroy(ctx->log_encoder);
+ }
+
+ flb_free(ctx->entry);
+ flb_free(ctx);
+ return 0;
+}
+
+
+static int in_netif_exit(void *data, struct flb_config *config)
+{
+ (void) *config;
+ struct flb_in_netif_config *ctx = data;
+
+ /* Destroy context */
+ config_destroy(ctx);
+
+ return 0;
+}
+
+static int init_entry_linux(struct flb_in_netif_config *ctx)
+{
+ int i;
+
+ ctx->entry_len = sizeof(entry_name_linux) / sizeof(struct entry_define);
+ ctx->entry = flb_malloc(sizeof(struct netif_entry) * ctx->entry_len);
+ if (!ctx->entry) {
+ flb_errno();
+ return -1;
+ }
+
+ for(i = 0; i < ctx->entry_len; i++) {
+ ctx->entry[i].name = entry_name_linux[i].name;
+ ctx->entry[i].name_len = strlen(entry_name_linux[i].name);
+ ctx->entry[i].prev = 0;
+ ctx->entry[i].now = 0;
+ if (ctx->verbose){
+ ctx->entry[i].checked = FLB_TRUE;
+ }
+ else {
+ ctx->entry[i].checked = entry_name_linux[i].checked;
+ }
+ if (ctx->entry[i].checked) {
+ ctx->map_num++;
+ }
+ }
+ return 0;
+}
+
+static int configure(struct flb_in_netif_config *ctx,
+ struct flb_input_instance *in)
+{
+ int ret;
+ ctx->map_num = 0;
+
+ /* Load the config map */
+ ret = flb_input_config_map_set(in, (void *)ctx);
+ if (ret == -1) {
+ flb_plg_error(in, "unable to load configuration");
+ return -1;
+ }
+
+ if (ctx->interval_sec <= 0 && ctx->interval_nsec <= 0) {
+ /* Illegal settings. Override them. */
+ ctx->interval_sec = atoi(DEFAULT_INTERVAL_SEC);
+ ctx->interval_nsec = atoi(DEFAULT_INTERVAL_NSEC);
+ }
+
+ if (ctx->interface == NULL) {
+ flb_plg_error(ctx->ins, "'interface' is not set");
+ return -1;
+ }
+ ctx->interface_len = strlen(ctx->interface);
+
+ ctx->first_snapshot = FLB_TRUE; /* assign first_snapshot with FLB_TRUE */
+
+ return init_entry_linux(ctx);
+}
+
+static inline int is_specific_interface(struct flb_in_netif_config *ctx,
+ char* interface)
+{
+ if (ctx->interface != NULL &&
+ !strncmp(ctx->interface, interface, ctx->interface_len)) {
+ return FLB_TRUE;
+ }
+ return FLB_FALSE;
+}
+
+static int parse_proc_line(char *line,
+ struct flb_in_netif_config *ctx)
+{
+ struct mk_list *head = NULL;
+ struct mk_list *split = NULL;
+ struct flb_split_entry *sentry = NULL;
+
+ int i = 0;
+ int entry_num;
+
+ split = flb_utils_split(line, ' ', 256);
+ entry_num = mk_list_size(split);
+ if (entry_num != ctx->entry_len + 1) {
+ flb_utils_split_free(split);
+ return -1;
+ }
+
+ mk_list_foreach(head, split) {
+ sentry = mk_list_entry(head, struct flb_split_entry ,_head);
+ if (i==0) {
+ /* interface name */
+ if( is_specific_interface(ctx, sentry->value)){
+ i++;
+ continue;
+ }
+ else {
+ /* skip this line */
+ flb_utils_split_free(split);
+ return -1;
+ }
+ }
+ ctx->entry[i-1].now = strtoul(sentry->value ,NULL ,10);
+ i++;
+ }
+
+ flb_utils_split_free(split);
+
+ return 0;
+}
+
+static inline uint64_t calc_diff(struct netif_entry *entry)
+{
+ if (entry->prev <= entry->now) {
+ return entry->now - entry->prev;
+ }
+ else {
+ return entry->now + (UINT64_MAX - entry->prev);
+ }
+}
+
+#define LINE_LEN 256
+static int read_proc_file_linux(struct flb_in_netif_config *ctx)
+{
+ FILE *fp = NULL;
+ char line[LINE_LEN] = {0};
+ int interface_found = FLB_FALSE;
+
+ fp = fopen("/proc/net/dev", "r");
+ if (fp == NULL) {
+ flb_errno();
+ flb_plg_error(ctx->ins, "cannot open /proc/net/dev");
+ return -1;
+ }
+ while(fgets(line, LINE_LEN-1, fp) != NULL){
+ if(parse_proc_line(line, ctx) == 0) {
+ interface_found = FLB_TRUE;
+ }
+ }
+ fclose(fp);
+ if (interface_found != FLB_TRUE) {
+ return -1;
+ }
+ return 0;
+}
+
+static int in_netif_collect_linux(struct flb_input_instance *i_ins,
+ struct flb_config *config, void *in_context)
+{
+ struct flb_in_netif_config *ctx = in_context;
+ char key_name[LINE_LEN] = {0};
+ int key_len;
+ int i;
+ int entry_len = ctx->entry_len;
+ int ret;
+
+ ret = 0;
+
+ read_proc_file_linux(ctx);
+
+ if (ctx->first_snapshot == FLB_TRUE) {
+ /* if in_netif are called for the first time, assign prev with now */
+ for (i = 0; i < entry_len; i++) {
+ ctx->entry[i].prev = ctx->entry[i].now;
+ }
+
+ /* assign first_snapshot with FLB_FALSE */
+ ctx->first_snapshot = FLB_FALSE;
+ }
+ else {
+ ret = flb_log_event_encoder_begin_record(ctx->log_encoder);
+
+ if (ret == FLB_EVENT_ENCODER_SUCCESS) {
+ ret = flb_log_event_encoder_set_current_timestamp(ctx->log_encoder);
+ }
+
+ for (i = 0 ;
+ i < entry_len &&
+ ret == FLB_EVENT_ENCODER_SUCCESS ;
+ i++) {
+ if (ctx->entry[i].checked) {
+ key_len = ctx->interface_len + ctx->entry[i].name_len + 1/* '.' */;
+
+ snprintf(key_name, key_len + 1 /* add null character */,
+ "%s.%s", ctx->interface, ctx->entry[i].name);
+
+ ret = flb_log_event_encoder_append_body_values(
+ ctx->log_encoder,
+ FLB_LOG_EVENT_CSTRING_VALUE(key_name),
+ FLB_LOG_EVENT_UINT64_VALUE(calc_diff(&ctx->entry[i])));
+
+ ctx->entry[i].prev = ctx->entry[i].now;
+ }
+ }
+
+ if (ret == FLB_EVENT_ENCODER_SUCCESS) {
+ ret = flb_log_event_encoder_commit_record(ctx->log_encoder);
+ }
+
+ if (ret == FLB_EVENT_ENCODER_SUCCESS) {
+ flb_input_log_append(i_ins, NULL, 0,
+ ctx->log_encoder->output_buffer,
+ ctx->log_encoder->output_length);
+ ret = 0;
+ }
+ else {
+ flb_plg_error(i_ins, "log event encoding error : %d", ret);
+
+ ret = -1;
+ }
+
+ flb_log_event_encoder_reset(ctx->log_encoder);
+ }
+
+ return ret;
+}
+
+static int in_netif_collect(struct flb_input_instance *i_ins,
+ struct flb_config *config, void *in_context)
+{
+ return in_netif_collect_linux(i_ins, config, in_context);
+}
+
+static int in_netif_init(struct flb_input_instance *in,
+ struct flb_config *config, void *data)
+{
+ int ret;
+
+ struct flb_in_netif_config *ctx = NULL;
+ (void) data;
+
+ /* Allocate space for the configuration */
+ ctx = flb_calloc(1, sizeof(struct flb_in_netif_config));
+ if (!ctx) {
+ flb_errno();
+ return -1;
+ }
+ ctx->ins = in;
+
+ ctx->log_encoder = flb_log_event_encoder_create(FLB_LOG_EVENT_FORMAT_DEFAULT);
+
+ if (ctx->log_encoder == NULL) {
+ flb_plg_error(in, "could not initialize event encoder");
+ config_destroy(ctx);
+
+ return -1;
+ }
+
+ if (configure(ctx, in) < 0) {
+ config_destroy(ctx);
+ return -1;
+ }
+
+ /* Testing interface */
+ if (ctx->test_at_init == FLB_TRUE) {
+ /* Try to read procfs */
+ ret = read_proc_file_linux(ctx);
+ if (ret < 0) {
+ flb_plg_error(in, "%s: init test failed", ctx->interface);
+ config_destroy(ctx);
+ return -1;
+ }
+ flb_plg_info(in, "%s: init test passed", ctx->interface);
+ }
+
+ /* Set the context */
+ flb_input_set_context(in, ctx);
+
+ /* Set our collector based on time */
+ ret = flb_input_set_collector_time(in,
+ in_netif_collect,
+ ctx->interval_sec,
+ ctx->interval_nsec,
+ config);
+ if (ret == -1) {
+ flb_plg_error(ctx->ins, "Could not set collector for Proc input plugin");
+ config_destroy(ctx);
+ return -1;
+ }
+
+ return 0;
+}
+
+static struct flb_config_map config_map[] = {
+ {
+ FLB_CONFIG_MAP_STR, "interface", (char *)NULL,
+ 0, FLB_TRUE, offsetof(struct flb_in_netif_config, interface),
+ "Set the interface, eg: eth0 or enp1s0"
+ },
+ {
+ FLB_CONFIG_MAP_INT, "interval_sec", DEFAULT_INTERVAL_SEC,
+ 0, FLB_TRUE, offsetof(struct flb_in_netif_config, interval_sec),
+ "Set the collector interval"
+ },
+ {
+ FLB_CONFIG_MAP_INT, "interval_nsec", DEFAULT_INTERVAL_NSEC,
+ 0, FLB_TRUE, offsetof(struct flb_in_netif_config, interval_nsec),
+ "Set the collector interval (nanoseconds)"
+ },
+ {
+ FLB_CONFIG_MAP_BOOL, "verbose", "false",
+ 0, FLB_TRUE, offsetof(struct flb_in_netif_config, verbose),
+ "Enable verbosity"
+ },
+ {
+ FLB_CONFIG_MAP_BOOL, "test_at_init", "false",
+ 0, FLB_TRUE, offsetof(struct flb_in_netif_config, test_at_init),
+ "Testing interface at initialization"
+ },
+ /* EOF */
+ {0}
+};
+
+/* Plugin reference */
+struct flb_input_plugin in_netif_plugin = {
+ .name = "netif",
+ .description = "Network Interface Usage",
+ .cb_init = in_netif_init,
+ .cb_pre_run = NULL,
+ .cb_collect = in_netif_collect,
+ .cb_flush_buf = NULL,
+ .cb_exit = in_netif_exit,
+ .config_map = config_map,
+ .flags = 0,
+};
diff --git a/fluent-bit/plugins/in_netif/in_netif.h b/fluent-bit/plugins/in_netif/in_netif.h
new file mode 100644
index 00000000..e571ec1f
--- /dev/null
+++ b/fluent-bit/plugins/in_netif/in_netif.h
@@ -0,0 +1,70 @@
+/* -*- 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.
+ */
+
+#ifndef FLB_IN_NETIF_H
+#define FLB_IN_NETIF_H
+
+#include <stdint.h>
+#include <unistd.h>
+
+#include <fluent-bit/flb_input.h>
+#include <fluent-bit/flb_log_event_encoder.h>
+#include <msgpack.h>
+
+#define DEFAULT_INTERVAL_SEC "1"
+#define DEFAULT_INTERVAL_NSEC "0"
+
+#define FLB_IN_NETIF_NAME "in_netif"
+
+struct entry_define
+{
+ char *name;
+ int checked;
+};
+
+struct netif_entry {
+ int checked;
+
+ char *name;
+ int name_len;
+
+ uint64_t prev;
+ uint64_t now;
+};
+
+struct flb_in_netif_config {
+ int interval_sec;
+ int interval_nsec;
+
+ flb_sds_t interface;
+ int interface_len;
+ int test_at_init;
+
+ int verbose;
+ int first_snapshot; /* a feild to indicate whethor or not this is the first collect */
+
+ struct netif_entry *entry;
+ int entry_len;
+
+ int map_num;
+ struct flb_input_instance *ins;
+ struct flb_log_event_encoder *log_encoder;
+};
+
+#endif /*FLB_IN_NETIF_H*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 11:47:42 +0000