1 files changed, 111 insertions, 0 deletions
diff --git a/fluent-bit/src/http_server/api/v1/uptime.c b/fluent-bit/src/http_server/api/v1/uptime.c
new file mode 100644
index 000000000..37f971871
--- /dev/null
+++ b/fluent-bit/src/http_server/api/v1/uptime.c
@@ -0,0 +1,111 @@
+/* -*- 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;
+}