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/* -*- 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_info.h>
#include <fluent-bit/flb_pack.h>
#include <fluent-bit/flb_http_server.h>
#include <fluent-bit/flb_mem.h>
#define FLB_UPTIME_ONEDAY 86400
#define FLB_UPTIME_ONEHOUR 3600
#define FLB_UPTIME_ONEMINUTE 60
/* Append human-readable uptime */
static void uptime_hr(time_t uptime, msgpack_packer *mp_pck)
{
int len;
int days;
int hours;
int minutes;
int seconds;
long int upmind;
long int upminh;
char buf[256];
/* days */
days = uptime / FLB_UPTIME_ONEDAY;
upmind = uptime - (days * FLB_UPTIME_ONEDAY);
/* hours */
hours = upmind / FLB_UPTIME_ONEHOUR;
upminh = upmind - hours * FLB_UPTIME_ONEHOUR;
/* minutes */
minutes = upminh / FLB_UPTIME_ONEMINUTE;
seconds = upminh - minutes * FLB_UPTIME_ONEMINUTE;
len = snprintf(buf, sizeof(buf) - 1,
"Fluent Bit has been running: "
" %i day%s, %i hour%s, %i minute%s and %i second%s",
days, (days > 1) ? "s" : "", hours, \
(hours > 1) ? "s" : "", minutes, \
(minutes > 1) ? "s" : "", seconds, \
(seconds > 1) ? "s" : "");
msgpack_pack_str(mp_pck, 9);
msgpack_pack_str_body(mp_pck, "uptime_hr", 9);
msgpack_pack_str(mp_pck, len);
msgpack_pack_str_body(mp_pck, buf, len);
}
/* API: List all built-in plugins */
static void cb_uptime(mk_request_t *request, void *data)
{
flb_sds_t out_buf;
size_t out_size;
time_t uptime;
msgpack_packer mp_pck;
msgpack_sbuffer mp_sbuf;
struct flb_hs *hs = data;
struct flb_config *config = hs->config;
/* initialize buffers */
msgpack_sbuffer_init(&mp_sbuf);
msgpack_packer_init(&mp_pck, &mp_sbuf, msgpack_sbuffer_write);
msgpack_pack_map(&mp_pck, 2);
msgpack_pack_str(&mp_pck, 10);
msgpack_pack_str_body(&mp_pck, "uptime_sec", 10);
uptime = time(NULL) - config->init_time;
msgpack_pack_uint64(&mp_pck, uptime);
uptime_hr(uptime, &mp_pck);
/* Export to JSON */
out_buf = flb_msgpack_raw_to_json_sds(mp_sbuf.data, mp_sbuf.size);
msgpack_sbuffer_destroy(&mp_sbuf);
if (!out_buf) {
return;
}
out_size = flb_sds_len(out_buf);
mk_http_status(request, 200);
flb_hs_add_content_type_to_req(request, FLB_HS_CONTENT_TYPE_JSON);
mk_http_send(request, out_buf, out_size, NULL);
mk_http_done(request);
flb_sds_destroy(out_buf);
}
/* Perform registration */
int api_v1_uptime(struct flb_hs *hs)
{
mk_vhost_handler(hs->ctx, hs->vid, "/api/v1/uptime", cb_uptime, hs);
return 0;
}
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