[25.12] prometheus-node-exporter-lua: sync with master

net/mwan3/test-version.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exit 0

utils/prometheus-node-exporter-lua/Makefile

@@ -4,7 +4,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=prometheus-node-exporter-lua
-PKG_VERSION:=2025.11.22
+PKG_VERSION:=2026.06.05
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=Etienne CHAMPETIER <champetier.etienne@gmail.com>
@@ -54,7 +54,7 @@ endef
 define Package/prometheus-node-exporter-lua/description
   Provides node metrics as Prometheus scraping endpoint.
 
-  This service is a lightweight rewrite in LUA of the offical Prometheus node_exporter.
+  This service is a lightweight rewrite in LUA of the official Prometheus node_exporter.
 endef
 
 # Additional optional exporters:
@@ -81,6 +81,17 @@ define Package/prometheus-node-exporter-lua-dawn/install
 	$(INSTALL_DATA) ./files/usr/lib/lua/prometheus-collectors/dawn.lua $(1)/usr/lib/lua/prometheus-collectors/
 endef
 
+define Package/prometheus-node-exporter-lua-filesystem
+  $(call Package/prometheus-node-exporter-lua/Default)
+  TITLE+= (filesystem collector)
+  DEPENDS:=prometheus-node-exporter-lua +luci-lib-nixio
+endef
+
+define Package/prometheus-node-exporter-lua-filesystem/install
+	$(INSTALL_DIR) $(1)/usr/lib/lua/prometheus-collectors
+	$(INSTALL_BIN) ./files/usr/lib/lua/prometheus-collectors/filesystem.lua $(1)/usr/lib/lua/prometheus-collectors/
+endef
+
 define Package/prometheus-node-exporter-lua-hostapd_stations
   $(call Package/prometheus-node-exporter-lua/Default)
   TITLE+= (hostapd_stations collector) - Requires a full hostapd / wpad build
@@ -279,9 +290,37 @@ define Package/prometheus-node-exporter-lua-nft-counters/install
 	$(INSTALL_DATA) ./files/usr/lib/lua/prometheus-collectors/nft_counters.lua $(1)/usr/lib/lua/prometheus-collectors/
 endef
 
+define Package/prometheus-node-exporter-lua-modemmanager
+  $(call Package/prometheus-node-exporter-lua/Default)
+  TITLE+= (modemmanager collector)
+  DEPENDS:=prometheus-node-exporter-lua +modemmanager +lua-cjson
+endef
+
+define Package/prometheus-node-exporter-lua-modemmanager/install
+	$(INSTALL_DIR) $(1)/usr/lib/lua/prometheus-collectors
+	$(INSTALL_DATA) ./files/usr/lib/lua/prometheus-collectors/modemmanager.lua $(1)/usr/lib/lua/prometheus-collectors/
+endef
+
+define Package/prometheus-node-exporter-lua-unbound
+  $(call Package/prometheus-node-exporter-lua/Default)
+  TITLE+= (unbound stats collector)
+  DEPENDS:=prometheus-node-exporter-lua +unbound-daemon
+endef
+
+define Package/prometheus-node-exporter-lua-unbound/description
+  Adds a Unbound stats collector to the Prometheus node exporter.
+  Refer to https://github.com/marinierb/prometheus-node-exporter-lua-unbound for configuration details.
+endef
+
+define Package/prometheus-node-exporter-lua-unbound/install
+	$(INSTALL_DIR) $(1)/usr/lib/lua/prometheus-collectors
+	$(INSTALL_DATA) ./files/usr/lib/lua/prometheus-collectors/unbound.lua $(1)/usr/lib/lua/prometheus-collectors/
+endef
+
 $(eval $(call BuildPackage,prometheus-node-exporter-lua))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-bmx7))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-dawn))
+$(eval $(call BuildPackage,prometheus-node-exporter-lua-filesystem))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-hostapd_stations))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-hostapd_ubus_stations))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-hwmon))
@@ -300,3 +339,5 @@ $(eval $(call BuildPackage,prometheus-node-exporter-lua-realtek-poe))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-mwan3))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-ethtool))
 $(eval $(call BuildPackage,prometheus-node-exporter-lua-nft-counters))
+$(eval $(call BuildPackage,prometheus-node-exporter-lua-modemmanager))
+$(eval $(call BuildPackage,prometheus-node-exporter-lua-unbound))

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/filesystem.lua

@@ -0,0 +1,85 @@
+-- depends on luci-lib-nixio
+local nix = require "nixio"
+
+local function scrape()
+  -- node exporter description - Filesystem size in bytes
+  local metric_size_bytes = metric("node_filesystem_size_bytes", "gauge")
+  -- node exporter description - Filesystem free space in bytes
+  local metric_free_bytes = metric("node_filesystem_free_bytes", "gauge")
+  -- node exporter description - Filesystem space available to non-root users in bytes
+  local metric_avail_bytes = metric("node_filesystem_avail_bytes", "gauge")
+  -- node exporter description - Filesystem total file nodes
+  local metric_files = metric("node_filesystem_files", "gauge")
+  -- node exporter description - Filesystem total free file nodes
+  local metric_files_free = metric("node_filesystem_files_free", "gauge")
+  -- node exporter description - Filesystem read-only status
+  local metric_readonly = metric("node_filesystem_readonly", "gauge")
+
+  for e in io.lines("/proc/self/mounts") do
+    local fields = space_split(e)
+
+    local device = fields[1]
+    local mount_point = fields[2]
+    local fs_type = fields[3]
+
+    -- Filter list from node exporter:
+    -- https://github.com/prometheus/node_exporter/blob/b9d0932179a0c5b3a8863f3d6cdafe8584cedc8e/collector/filesystem_linux.go#L36-L37
+    if mount_point:find("/dev/?", 1) ~= 1
+        and mount_point:find("/proc/?", 1) ~= 1
+        and mount_point:find("/run/credentials/?", 1) ~= 1
+        and mount_point:find("/sys/?", 1) ~= 1
+        and mount_point:find("/var/lib/docker/?", 1) ~= 1
+        and mount_point:find("/var/lib/containers/storage/?", 1) ~= 1
+        and fs_type ~= "autofs"
+        and fs_type ~= "binfmt_misc"
+        and fs_type ~= "bpf"
+        and fs_type ~= "cgroup"
+        and fs_type ~= "cgroup2"
+        and fs_type ~= "configfs"
+        and fs_type ~= "debugfs"
+        and fs_type ~= "devpts"
+        and fs_type ~= "devtmpfs"
+        and fs_type ~= "fusectl"
+        and fs_type ~= "hugetlbfs"
+        and fs_type ~= "iso9660"
+        and fs_type ~= "mqueue"
+        and fs_type ~= "nsfs"
+        and fs_type ~= "overlay"
+        and fs_type ~= "proc"
+        and fs_type ~= "procfs"
+        and fs_type ~= "pstore"
+        and fs_type ~= "rpc_pipefs"
+        and fs_type ~= "securityfs"
+        and fs_type ~= "selinuxfs"
+        and fs_type ~= "squashfs"
+        and fs_type ~= "sysfs"
+        and fs_type ~= "tracefs" then
+      -- note that this excludes / as it's an overlay filesystem
+
+      local stat = nix.fs.statvfs(mount_point)
+
+      -- https://github.com/torvalds/linux/blob/e5fa841af679cb830da6c609c740a37bdc0b8b35/include/linux/statfs.h#L31
+      local ST_RDONLY = 0x001
+
+      local labels = {
+        device = device,
+        fstype = fs_type,
+        mountpoint = mount_point,
+      }
+
+      local ro = 0
+      if (nix.bit.band(stat.flag, ST_RDONLY)) == 1 then
+        ro = 1
+      end
+
+      metric_size_bytes(labels, stat.blocks * stat.bsize)
+      metric_free_bytes(labels, stat.bfree * stat.bsize)
+      metric_avail_bytes(labels, stat.bavail * stat.bsize)
+      metric_files(labels, stat.files)
+      metric_files_free(labels, stat.ffree)
+      metric_readonly(labels, ro)
+    end
+  end
+end
+
+return { scrape = scrape }

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/modemmanager.lua

@@ -0,0 +1,48 @@
+local cjson = require "cjson"
+
+local function scrape()
+  local file, output, data
+
+  file = io.popen("mmcli -L -J", 'r')
+  if not file then return end
+  output = file:read('*all')
+  file:close()
+
+  local ok, modem_list = pcall(cjson.decode, output)
+  if not ok or not modem_list["modem-list"] then return end
+
+  for _, modem in ipairs(modem_list["modem-list"]) do
+
+    file = io.popen("mmcli -m " .. modem .. " -J", 'r')
+    if file then
+      output = file:read('*all')
+      file:close()
+
+      ok, data = pcall(cjson.decode, output)
+      if ok and data["modem"] then
+        local quality = data["modem"]["generic"]["signal-quality"]["value"]
+        metric("modemmanager_signal_quality", "gauge", {modem=modem}, tonumber(quality))
+      end
+    end
+
+    file = io.popen("mmcli -m " .. modem .. " --signal-get -J", 'r')
+    if file then
+      output = file:read('*all')
+      file:close()
+
+      ok, data = pcall(cjson.decode, output)
+      if ok and data["modem"] and data["modem"]["signal"] then
+        for tech, values in pairs(data["modem"]["signal"]) do
+          for metric_name, value in pairs(values) do
+            local num = tonumber(value)
+            if num then
+              metric("modemmanager_signal_" .. tech .. "_" .. metric_name, "gauge", {modem=modem}, num)
+            end
+          end
+        end
+      end
+    end
+  end
+end
+
+return { scrape = scrape }

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/openwrt.lua

@@ -12,13 +12,22 @@ local labels = {
     target = b.release.target
 }
 
+local os_info = {
+    id = string.lower(b.release.distribution),
+    name = b.release.distribution,
+    pretty_name = b.release.distribution .. " " .. b.release.version,
+    version = b.release.version,
+    version_id = b.release.version,
+    build_id = b.release.revision,
+}
+
 local b = nil
 local u = nil
 local ubus = nil
 
 local function scrape()
     metric("node_openwrt_info", "gauge", labels, 1)
+    metric("node_os_info", "gauge", os_info, 1)
 end
 
 return { scrape = scrape }
-

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/uci_dhcp_host.lua

@@ -5,8 +5,16 @@ local function scrape()
   local metric_uci_host = metric("uci_dhcp_host", "gauge")
 
   curs:foreach("dhcp", "host", function(s)
-    if s[".type"] == "host" then
-      labels = {name=s["name"], mac=string.upper(s["mac"]), dns=s["dns"], ip=s["ip"]}
+    local labels = {name=s["name"], dns=s["dns"], ip=s["ip"], duid=s["duid"]}
+
+    if s["mac"] == nil then
+      metric_uci_host(labels, 1)
+      return
+    end
+
+    local macs = type(s["mac"]) == "table" and s["mac"] or {s["mac"]}
+    for _, mac in ipairs(macs) do
+      labels["mac"] = string.upper(mac)
       metric_uci_host(labels, 1)
     end
   end)

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/unbound.lua

@@ -0,0 +1,56 @@
+-- Unbound stats exporter
+
+local socket = require("socket")
+local unix = require("socket.unix")
+
+local function scrape()
+    local metrics = {
+        ["total.num.queries"                ] = metric("unbound_num_queries_total",                "counter"),
+        ["total.num.queries_ip_ratelimited" ] = metric("unbound_num_queries_ip_ratelimited_total", "counter"),
+        ["total.num.queries_cookie_valid"   ] = metric("unbound_num_queries_cookie_valid_total",   "counter"),
+        ["total.num.queries_cookie_client"  ] = metric("unbound_num_queries_cookie_client_total",  "counter"),
+        ["total.num.queries_cookie_invalid" ] = metric("unbound_num_queries_cookie_invalid_total", "counter"),
+        ["total.num.queries_discard_timeout"] = metric("unbound_num_queries_discard_timeout_total","counter"),
+        ["total.num.queries_wait_limit"     ] = metric("unbound_num_queries_wait_limit_total",     "counter"),
+        ["total.num.cachehits"              ] = metric("unbound_cachehits_total",                  "counter"),
+        ["total.num.cachemiss"              ] = metric("unbound_cachemiss_total",                  "counter"),
+        ["total.num.prefetch"               ] = metric("unbound_prefetch_total",                   "counter"),
+        ["total.num.queries_timed_out"      ] = metric("unbound_num_queries_timed_out_total",      "counter"),
+        ["total.query.queue_time_us.max"    ] = metric("unbound_query_queue_time_us_max",          "gauge"),
+        ["total.num.expired"                ] = metric("unbound_num_expired_total",                "counter"),
+        ["total.num.recursivereplies"       ] = metric("unbound_num_recursivereplies_total",       "counter"),
+        ["total.num.dns_error_reports"      ] = metric("unbound_num_dns_error_reports_total",      "counter"),
+        ["total.requestlist.avg"            ] = metric("unbound_requestlist_avg",                  "gauge"),
+        ["total.requestlist.max"            ] = metric("unbound_requestlist_max",                  "gauge"),
+        ["total.requestlist.overwritten"    ] = metric("unbound_requestlist_overwritten_total",    "counter"),
+        ["total.requestlist.exceeded"       ] = metric("unbound_requestlist_exceeded_total",       "counter"),
+        ["total.requestlist.current.all"    ] = metric("unbound_requestlist_current_all",          "gauge"),
+        ["total.requestlist.current.user"   ] = metric("unbound_requestlist_current_user",         "gauge"),
+        ["total.recursion.time.avg"         ] = metric("unbound_recursion_time_avg",               "gauge"),
+        ["total.recursion.time.median"      ] = metric("unbound_recursion_time_median",            "gauge"),
+    }
+
+    local sock = unix()
+    local ok, err = sock:connect("/run/unbound.ctl")
+    if not ok then
+        return nil, "failed to connect to unbound socket: " .. (err or "unknown")
+    end
+
+    sock:settimeout(1)
+    sock:send("UBCT1 stats_noreset\n")
+    local out = sock:receive("*a")
+
+    sock:close()
+
+    for line in out:gmatch("[^\r\n]+") do
+        local key, val = line:match("^([^=]+)=(.+)$")
+        if key and val then
+            local n = tonumber(val)
+            if metrics[key] then
+                metrics[key]({}, n)
+            end
+        end
+    end
+end
+
+return { scrape = scrape }

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/wifi.lua

@@ -10,6 +10,10 @@ local function scrape()
   local u = ubus.connect()
   local status = u:call("network.wireless", "status", {})
 
+  if not status then
+    return
+  end
+
   for dev, dev_table in pairs(status) do
     for _, intf in ipairs(dev_table['interfaces']) do
       local ifname = intf['ifname']

utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/wifi_stations.lua

@@ -23,6 +23,10 @@ local function scrape()
   local u = ubus.connect()
   local status = u:call("network.wireless", "status", {})
 
+  if not status then
+    return
+  end
+
   for dev, dev_table in pairs(status) do
     for _, intf in ipairs(dev_table['interfaces']) do
       local ifname = intf['ifname']

utils/prometheus-node-exporter-lua/test-version.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exit 0

utils/prometheus-node-exporter-lua/test.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# shellcheck shell=busybox
+
+case "$PKG_NAME" in
+prometheus-node-exporter-lua-openwrt)
+	# call ubus outside scape, so skip the check
+	exit 0
+	;;
+
+*)
+	prometheus-node-exporter-lua | grep node_scrape_collector_success
+	;;
+esac