2ef0af5fe8
[Matthias Schiffer: rebase]
262 lines
7.9 KiB
C
262 lines
7.9 KiB
C
/*
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Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <respondd.h>
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#include <json-c/json.h>
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#include <libgluonutil.h>
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#include <libplatforminfo.h>
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#include <uci.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/vfs.h>
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static struct json_object * gluon_version(void) {
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char *version = gluonutil_read_line("/lib/gluon/gluon-version");
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if (!version)
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return NULL;
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char full_version[6 + strlen(version) + 1];
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snprintf(full_version, sizeof(full_version), "gluon-%s", version);
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free(version);
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return json_object_new_string(full_version);
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}
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static struct json_object * get_site_code(void) {
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struct json_object *site = gluonutil_load_site_config();
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if (!site)
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return NULL;
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struct json_object *ret = NULL;
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json_object_object_get_ex(site, "site_code", &ret);
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if (ret)
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json_object_get(ret);
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json_object_put(site);
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return ret;
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}
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static struct json_object * get_domain_code(void) {
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return gluonutil_wrap_and_free_string(gluonutil_get_domain());
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}
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static struct json_object * get_hostname(void) {
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struct json_object *ret = NULL;
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struct uci_context *ctx = uci_alloc_context();
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if (!ctx)
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return NULL;
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ctx->flags &= ~UCI_FLAG_STRICT;
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char section[] = "system.@system[0]";
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struct uci_ptr ptr;
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if (uci_lookup_ptr(ctx, &ptr, section, true))
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goto error;
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struct uci_section *s = ptr.s;
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const char *hostname = uci_lookup_option_string(ctx, s, "pretty_hostname");
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if (!hostname)
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hostname = uci_lookup_option_string(ctx, s, "hostname");
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ret = gluonutil_wrap_string(hostname);
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error:
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uci_free_context(ctx);
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return ret;
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}
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static struct json_object * respondd_provider_nodeinfo(void) {
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struct json_object *ret = json_object_new_object();
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json_object_object_add(ret, "node_id", gluonutil_wrap_and_free_string(gluonutil_get_node_id()));
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json_object_object_add(ret, "hostname", get_hostname());
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struct json_object *hardware = json_object_new_object();
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const char *model = platforminfo_get_model();
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if (model)
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json_object_object_add(hardware, "model", json_object_new_string(model));
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json_object_object_add(hardware, "nproc", json_object_new_int(sysconf(_SC_NPROCESSORS_ONLN)));
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json_object_object_add(ret, "hardware", hardware);
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struct json_object *network = json_object_new_object();
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json_object_object_add(network, "mac", gluonutil_wrap_and_free_string(gluonutil_get_sysconfig("primary_mac")));
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json_object_object_add(ret, "network", network);
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struct json_object *software = json_object_new_object();
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struct json_object *software_firmware = json_object_new_object();
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json_object_object_add(software_firmware, "base", gluon_version());
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json_object_object_add(software_firmware, "release", gluonutil_wrap_and_free_string(gluonutil_read_line("/lib/gluon/release")));
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json_object_object_add(software, "firmware", software_firmware);
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json_object_object_add(ret, "software", software);
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struct json_object *system = json_object_new_object();
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json_object_object_add(system, "site_code", get_site_code());
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if (gluonutil_has_domains())
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json_object_object_add(system, "domain_code", get_domain_code());
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json_object_object_add(ret, "system", system);
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return ret;
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}
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static void add_uptime(struct json_object *obj) {
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FILE *f = fopen("/proc/uptime", "r");
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struct json_object* jso;
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if (!f)
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return;
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double uptime, idletime;
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if (fscanf(f, "%lf %lf", &uptime, &idletime) == 2) {
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jso = json_object_new_double(uptime);
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json_object_set_serializer(jso, json_object_double_to_json_string, "%.2f", NULL);
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json_object_object_add(obj, "uptime", jso);
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jso = json_object_new_double(idletime);
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json_object_set_serializer(jso, json_object_double_to_json_string, "%.2f", NULL);
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json_object_object_add(obj, "idletime", jso);
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}
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fclose(f);
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}
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static void add_loadavg(struct json_object *obj) {
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FILE *f = fopen("/proc/loadavg", "r");
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if (!f)
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return;
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double loadavg;
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unsigned proc_running, proc_total;
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if (fscanf(f, "%lf %*f %*f %u/%u", &loadavg, &proc_running, &proc_total) == 3) {
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struct json_object *jso = json_object_new_double(loadavg);
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json_object_set_serializer(jso, json_object_double_to_json_string, "%.2f", NULL);
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json_object_object_add(obj, "loadavg", jso);
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struct json_object *processes = json_object_new_object();
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json_object_object_add(processes, "running", json_object_new_int(proc_running));
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json_object_object_add(processes, "total", json_object_new_int(proc_total));
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json_object_object_add(obj, "processes", processes);
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}
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fclose(f);
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}
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static struct json_object * get_memory(void) {
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FILE *f = fopen("/proc/meminfo", "r");
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if (!f)
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return NULL;
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struct json_object *ret = json_object_new_object();
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char *line = NULL;
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size_t len = 0;
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while (getline(&line, &len, f) >= 0) {
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char label[32];
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unsigned value;
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if (sscanf(line, "%31[^:]: %u", label, &value) != 2)
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continue;
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if (!strcmp(label, "MemTotal"))
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json_object_object_add(ret, "total", json_object_new_int(value));
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else if (!strcmp(label, "MemFree"))
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json_object_object_add(ret, "free", json_object_new_int(value));
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else if (!strcmp(label, "Buffers"))
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json_object_object_add(ret, "buffers", json_object_new_int(value));
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else if (!strcmp(label, "Cached"))
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json_object_object_add(ret, "cached", json_object_new_int(value));
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}
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free(line);
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fclose(f);
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return ret;
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}
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static struct json_object * get_rootfs_usage(void) {
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struct statfs s;
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if (statfs("/", &s))
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return NULL;
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struct json_object *jso = json_object_new_double(1 - (double)s.f_bfree / s.f_blocks);
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json_object_set_serializer(jso, json_object_double_to_json_string, "%.4f", NULL);
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return jso;
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}
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static struct json_object * get_time(void) {
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struct timespec now;
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if (clock_gettime(CLOCK_REALTIME, &now) != 0)
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return NULL;
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return json_object_new_int64(now.tv_sec);
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}
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static struct json_object * respondd_provider_statistics(void) {
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struct json_object *ret = json_object_new_object();
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json_object_object_add(ret, "node_id", gluonutil_wrap_and_free_string(gluonutil_get_node_id()));
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json_object *time = get_time();
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if (time != NULL)
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json_object_object_add(ret, "time", time);
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json_object_object_add(ret, "rootfs_usage", get_rootfs_usage());
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json_object_object_add(ret, "memory", get_memory());
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add_uptime(ret);
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add_loadavg(ret);
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return ret;
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}
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static struct json_object * respondd_provider_neighbours(void) {
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struct json_object *ret = json_object_new_object();
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json_object_object_add(ret, "node_id", gluonutil_wrap_and_free_string(gluonutil_get_node_id()));
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return ret;
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}
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const struct respondd_provider_info respondd_providers[] = {
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{"nodeinfo", respondd_provider_nodeinfo},
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{"statistics", respondd_provider_statistics},
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{"neighbours", respondd_provider_neighbours},
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{}
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};
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