summaryrefslogtreecommitdiffstats
path: root/fluent-bit/plugins/out_slack
diff options
context:
space:
mode:
Diffstat (limited to 'fluent-bit/plugins/out_slack')
-rw-r--r--fluent-bit/plugins/out_slack/CMakeLists.txt5
-rw-r--r--fluent-bit/plugins/out_slack/slack.c336
-rw-r--r--fluent-bit/plugins/out_slack/slack.h43
3 files changed, 384 insertions, 0 deletions
diff --git a/fluent-bit/plugins/out_slack/CMakeLists.txt b/fluent-bit/plugins/out_slack/CMakeLists.txt
new file mode 100644
index 000000000..b62a70472
--- /dev/null
+++ b/fluent-bit/plugins/out_slack/CMakeLists.txt
@@ -0,0 +1,5 @@
+set(src
+ slack.c
+ )
+
+FLB_PLUGIN(out_slack "${src}" "")
diff --git a/fluent-bit/plugins/out_slack/slack.c b/fluent-bit/plugins/out_slack/slack.c
new file mode 100644
index 000000000..f014228e9
--- /dev/null
+++ b/fluent-bit/plugins/out_slack/slack.c
@@ -0,0 +1,336 @@
+/* -*- 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_output_plugin.h>
+#include <fluent-bit/flb_pack.h>
+#include <fluent-bit/flb_utils.h>
+#include <fluent-bit/flb_http_client.h>
+#include <fluent-bit/flb_log_event_decoder.h>
+
+#include "slack.h"
+
+#define FLB_HTTP_CONTENT_TYPE "Content-Type"
+#define FLB_HTTP_MIME_JSON "application/json"
+
+static int cb_slack_init(struct flb_output_instance *ins,
+ struct flb_config *config, void *data)
+{
+ int ret;
+ char *protocol = NULL;
+ char *host = NULL;
+ char *port = NULL;
+ char *uri = NULL;
+ struct flb_slack *ctx;
+ (void) config;
+ (void) data;
+
+ /* Allocate context */
+ ctx = flb_calloc(1, sizeof(struct flb_slack));
+ if (!ctx) {
+ flb_errno();
+ return -1;
+ }
+ ctx->ins = ins;
+
+ /* Set the plugin context */
+ flb_output_set_context(ins, ctx);
+
+ /* Create config map and validate expected parameters */
+ ret = flb_output_config_map_set(ins, (void *) ctx);
+ if (ret == -1) {
+ flb_free(ctx);
+ return -1;
+ }
+
+ /* Validate if the slack webhook is defined */
+ if (!ctx->webhook) {
+ flb_plg_error(ctx->ins, "the 'webhook' address has not been defined");
+ return -1;
+ }
+
+ /* Split the address */
+ ret = flb_utils_url_split(ctx->webhook, &protocol, &host, &port, &uri);
+ if (ret == -1) {
+ flb_plg_error(ctx->ins, "could not process 'webhook' address");
+ return -1;
+ }
+
+ if (strcasecmp(protocol, "https") != 0) {
+ flb_plg_error(ctx->ins, "invalid protocol '%s', we expected 'https'",
+ protocol);
+ goto error;
+ }
+
+ if (!host) {
+ flb_plg_error(ctx->ins, "invalid slack host");
+ goto error;
+ }
+
+ if (!uri) {
+ flb_plg_error(ctx->ins, "slack webhook uri has not been defined");
+ goto error;
+ }
+
+ ctx->host = flb_sds_create(host);
+ ctx->uri = flb_sds_create(uri);
+
+ if (port) {
+ ctx->port = atoi(port);
+ }
+ else {
+ ctx->port = 443;
+ }
+
+ /* Create upstream context */
+ ctx->u = flb_upstream_create(config,
+ ctx->host,
+ ctx->port,
+ FLB_IO_TLS, ins->tls);
+ if (!ctx->u) {
+ flb_plg_error(ctx->ins, "error creating upstream context");
+ goto error;
+ }
+
+ /* Set instance flags into upstream */
+ flb_output_upstream_set(ctx->u, ins);
+
+ /* Cleanup */
+ if (protocol) {
+ flb_free(protocol);
+ }
+ if (host) {
+ flb_free(host);
+ }
+ if (port) {
+ flb_free(port);
+ }
+ if (uri) {
+ flb_free(uri);
+ }
+
+ return 0;
+
+error:
+ if (protocol) {
+ flb_free(protocol);
+ }
+ if (host) {
+ flb_free(host);
+ }
+ if (port) {
+ flb_free(port);
+ }
+ if (uri) {
+ flb_free(uri);
+ }
+
+ return -1;
+}
+
+static void cb_slack_flush(struct flb_event_chunk *event_chunk,
+ struct flb_output_flush *out_flush,
+ struct flb_input_instance *i_ins,
+ void *out_context,
+ struct flb_config *config)
+{
+ int len;
+ int ret;
+ int out_ret = FLB_OK;
+ size_t size;
+ size_t printed = 0;
+ size_t b_sent;
+ flb_sds_t json;
+ flb_sds_t out_buf;
+ msgpack_sbuffer mp_sbuf;
+ msgpack_packer mp_pck;
+ struct flb_http_client *c;
+ struct flb_connection *u_conn;
+ struct flb_slack *ctx = out_context;
+ struct flb_log_event_decoder log_decoder;
+ struct flb_log_event log_event;
+
+ size = event_chunk->size * 4;
+ json = flb_sds_create_size(size);
+ if (!json) {
+ FLB_OUTPUT_RETURN(FLB_RETRY);
+ }
+ memset(json, '\0', size);
+
+ ret = flb_log_event_decoder_init(&log_decoder,
+ (char *) event_chunk->data,
+ event_chunk->size);
+
+ if (ret != FLB_EVENT_DECODER_SUCCESS) {
+ flb_plg_error(ctx->ins,
+ "Log event decoder initialization error : %d", ret);
+
+ flb_sds_destroy(json);
+
+ FLB_OUTPUT_RETURN(FLB_RETRY);
+ }
+
+ while ((ret = flb_log_event_decoder_next(
+ &log_decoder,
+ &log_event)) == FLB_EVENT_DECODER_SUCCESS) {
+
+ ret = snprintf(json + printed, size - printed,
+ "[\"timestamp\": %" PRIu32 ".%09lu, ",
+ (uint32_t) log_event.timestamp.tm.tv_sec,
+ log_event.timestamp.tm.tv_nsec);
+ printed += ret;
+
+ ret = msgpack_object_print_buffer(json + printed,
+ size - printed,
+ *log_event.body);
+ if (ret < 0) {
+ flb_plg_error(ctx->ins, "error formatting payload");
+ flb_sds_destroy(json);
+ flb_log_event_decoder_destroy(&log_decoder);
+
+ FLB_OUTPUT_RETURN(FLB_RETRY);
+ }
+
+ /* the previous call returns the remaining available space in the buffer */
+ printed += ret;
+ json[printed++] = ']';
+ json[printed++] = '\n';
+ }
+
+ flb_log_event_decoder_destroy(&log_decoder);
+
+ /* Take formatted message and convert it to msgpack */
+ msgpack_sbuffer_init(&mp_sbuf);
+ msgpack_packer_init(&mp_pck, &mp_sbuf, msgpack_sbuffer_write);
+
+ len = strlen(json);
+
+ msgpack_pack_map(&mp_pck, 1);
+ msgpack_pack_str(&mp_pck, 4);
+ msgpack_pack_str_body(&mp_pck, "text", 4);
+ msgpack_pack_str(&mp_pck, len);
+ msgpack_pack_str_body(&mp_pck, json, len);
+
+ /* Release buffer */
+ flb_sds_destroy(json);
+
+ /* Re-format mspgack as JSON */
+ out_buf = flb_msgpack_raw_to_json_sds(mp_sbuf.data, mp_sbuf.size);
+ if (!out_buf) {
+ msgpack_sbuffer_destroy(&mp_sbuf);
+ FLB_OUTPUT_RETURN(FLB_RETRY);
+ }
+ msgpack_sbuffer_destroy(&mp_sbuf);
+
+ /* Create upstream connection */
+ u_conn = flb_upstream_conn_get(ctx->u);
+ if (!u_conn) {
+ flb_sds_destroy(out_buf);
+ FLB_OUTPUT_RETURN(FLB_RETRY);
+ }
+
+ /* Create HTTP client context */
+ c = flb_http_client(u_conn, FLB_HTTP_POST, ctx->uri,
+ out_buf, flb_sds_len(out_buf),
+ ctx->host, ctx->port,
+ NULL, 0);
+ flb_http_add_header(c,
+ FLB_HTTP_CONTENT_TYPE,
+ sizeof(FLB_HTTP_CONTENT_TYPE) - 1,
+ FLB_HTTP_MIME_JSON,
+ sizeof(FLB_HTTP_MIME_JSON) - 1);
+ flb_http_add_header(c, "User-Agent", 10, "Fluent-Bit", 10);
+
+ ret = flb_http_do(c, &b_sent);
+ if (ret == 0) {
+ if (c->resp.status < 200 || c->resp.status > 205) {
+ flb_plg_error(ctx->ins, "%s:%i, HTTP status=%i",
+ ctx->host, ctx->port, c->resp.status);
+ out_ret = FLB_RETRY;
+ }
+ else {
+ if (c->resp.payload) {
+ flb_plg_info(ctx->ins, "%s:%i, HTTP status=%i\n%s",
+ ctx->host, ctx->port,
+ c->resp.status, c->resp.payload);
+ }
+ else {
+ flb_plg_info(ctx->ins, "%s:%i, HTTP status=%i",
+ ctx->host, ctx->port,
+ c->resp.status);
+ }
+ }
+ }
+ else {
+ flb_plg_error(ctx->ins, "could not flush records to %s:%i (http_do=%i)",
+ ctx->host, ctx->port, ret);
+ out_ret = FLB_RETRY;
+ }
+
+ flb_upstream_conn_release(u_conn);
+ flb_http_client_destroy(c);
+ flb_sds_destroy(out_buf);
+ FLB_OUTPUT_RETURN(out_ret);
+}
+
+static int cb_slack_exit(void *data, struct flb_config *config)
+{
+ struct flb_slack *ctx;
+
+ ctx = (struct flb_slack *) data;
+ if (!ctx) {
+ return 0;
+ }
+
+ if (ctx->host) {
+ flb_sds_destroy(ctx->host);
+ }
+ if (ctx->uri) {
+ flb_sds_destroy(ctx->uri);
+ }
+
+ if (ctx->u) {
+ flb_upstream_destroy(ctx->u);
+ }
+
+ flb_free(ctx);
+
+ return 0;
+}
+
+/* Configuration properties map */
+static struct flb_config_map config_map[] = {
+ {
+ FLB_CONFIG_MAP_STR, "webhook", NULL,
+ 0, FLB_TRUE, offsetof(struct flb_slack, webhook),
+ NULL
+ },
+
+ /* EOF */
+ {0}
+};
+
+struct flb_output_plugin out_slack_plugin = {
+ .name = "slack",
+ .description = "Send events to a Slack channel",
+ .cb_init = cb_slack_init,
+ .cb_flush = cb_slack_flush,
+ .cb_exit = cb_slack_exit,
+ .flags = FLB_OUTPUT_NET | FLB_IO_TLS,
+ .config_map = config_map
+};
diff --git a/fluent-bit/plugins/out_slack/slack.h b/fluent-bit/plugins/out_slack/slack.h
new file mode 100644
index 000000000..e7babc263
--- /dev/null
+++ b/fluent-bit/plugins/out_slack/slack.h
@@ -0,0 +1,43 @@
+/* -*- 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_OUT_SLACK_H
+#define FLB_OUT_SLACK_H
+
+#include <fluent-bit/flb_info.h>
+#include <fluent-bit/flb_sds.h>
+#include <fluent-bit/flb_upstream.h>
+
+struct flb_slack {
+ /* full webhook address */
+ flb_sds_t webhook;
+
+ /* processed webhook */
+ flb_sds_t host;
+ int port;
+ flb_sds_t uri;
+
+ /* upstream context */
+ struct flb_upstream *u;
+
+ /* Plugin instance */
+ struct flb_output_instance *ins;
+};
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-02 16:41:39 +0000