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node-exporter: copy from upstream
Copy variant from PR: openwrt/packages#28016 Signed-off-by: Vladimir Ermakov <vooon341@gmail.com>
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‎prometheus-node-exporter-ucode/Makefile‎

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# Copyright (C) 2013-2017 OpenWrt.org
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include $(TOPDIR)/rules.mk
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PKG_NAME:=prometheus-node-exporter-ucode
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<<<<<<< Updated upstream
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PKG_VERSION:=2024.02.07
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PKG_RELEASE:=2
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=======
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PKG_VERSION:=2025.12.04
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PKG_RELEASE:=1
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>>>>>>> Stashed changes
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PKG_MAINTAINER:=Andre Heider <a.heider@gmail.com>
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PKG_LICENSE:=Apache-2.0
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include $(INCLUDE_DIR)/package.mk
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Build/Compile=
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define Package/$(PKG_NAME)/Default
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SECTION:=utils
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CATEGORY:=Utilities
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TITLE:=Prometheus node exporter
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PKGARCH:=all
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endef
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define Package/$(PKG_NAME)
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$(call Package/$(PKG_NAME)/Default)
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DEPENDS:=+uhttpd +uhttpd-mod-ucode +rpcd +ucode-mod-fs +ucode-mod-ubus
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endef
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define Package/$(PKG_NAME)/install
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$(INSTALL_DIR) $(1)/etc/config
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$(INSTALL_CONF) ./files/config $(1)/etc/config/$(PKG_NAME)
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$(INSTALL_DIR) $(1)/etc/init.d
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$(INSTALL_BIN) ./files/init $(1)/etc/init.d/$(PKG_NAME)
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$(INSTALL_DIR) $(1)/usr/share/ucode/node-exporter/lib
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$(INSTALL_DATA) ./files/metrics.uc $(1)/usr/share/ucode/node-exporter/
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$(INSTALL_DATA) ./files/base/*.uc $(1)/usr/share/ucode/node-exporter/lib/
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$(INSTALL_DIR) $(1)/usr/bin
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$(INSTALL_BIN) ./files/run.sh $(1)/usr/bin/$(PKG_NAME)
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endef
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define Package/$(PKG_NAME)/conffiles
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/etc/config/$(PKG_NAME)
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endef
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define Package/$(PKG_NAME)/description
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Provides node metrics as Prometheus scraping endpoint.
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This service is a lightweight rewrite in ucode of the official Prometheus node_exporter.
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endef
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$(eval $(call BuildPackage,prometheus-node-exporter-ucode))
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define Collector
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define Package/$(PKG_NAME)-$(1)
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$$(call Package/$(PKG_NAME)/Default)
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TITLE+= ($(2))
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DEPENDS:=$(PKG_NAME) $(3)
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endef
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define Package/$(PKG_NAME)-$(1)/install
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$$(INSTALL_DIR) $$(1)/usr/share/ucode/node-exporter/lib
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$$(INSTALL_DATA) ./files/extra/$(1).uc $$(1)/usr/share/ucode/node-exporter/lib/
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endef
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$$(eval $$(call BuildPackage,$(PKG_NAME)-$(1)))
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endef
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$(eval $(call Collector,dnsmasq,Dnsmasq collector,@dnsmasq))
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$(eval $(call Collector,hwmon,hwmon collector,))
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$(eval $(call Collector,ltq-dsl,Lantiq/Intel/MaxLinear DSL collector,@ltq-dsl-app))
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$(eval $(call Collector,netstat,netstat collector,))
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$(eval $(call Collector,odhcp6c,odhcp6c statistics collector,@odhcp6c))
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$(eval $(call Collector,openwrt,OpenWrt collector,))
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$(eval $(call Collector,realtek-poe,RealTek PoE collector,@realtek-poe))
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$(eval $(call Collector,snmp6,snmp6 collector,))
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$(eval $(call Collector,thermal,thermal collector,))
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$(eval $(call Collector,uci_dhcp_host,UCI DHCP host collector,))
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$(eval $(call Collector,wifi,Wi-Fi collector,+ucode-mod-nl80211))
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$(eval $(call Collector,wireguard,Wireguard collector,+rpcd-mod-wireguard))

‎prometheus-node-exporter-ucode/files/base/conntrack.uc‎

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gauge("node_nf_conntrack_entries")
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(null, oneline("/proc/sys/net/netfilter/nf_conntrack_count"));
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gauge("node_nf_conntrack_entries_limit")
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(null, oneline("/proc/sys/net/netfilter/nf_conntrack_max"));

‎prometheus-node-exporter-ucode/files/base/cpu.uc‎

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let f = fs.open("/proc/stat");
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if (!f)
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return false;
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const desc = [
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null,
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"user",
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"nice",
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"system",
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"idle",
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"iowait",
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"irq",
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"softirq",
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"steal",
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"guest",
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"guest_nice",
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];
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const m_cpu = counter("node_cpu_seconds_total");
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let line;
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while (line = nextline(f)) {
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const x = wsplit(line);
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if (length(x) < 2)
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continue;
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if (match(x[0], /^cpu\d+/)) {
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const count = min(length(x), length(desc));
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for (let i = 1; i < count; i++)
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m_cpu({ cpu: x[0], mode: desc[i] }, x[i] / 100.0);
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} else if (x[0] == "intr")
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counter("node_intr_total")(null, x[1]);
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else if (x[0] == "ctxt")
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counter("node_context_switches_total")(null, x[1]);
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else if (x[0] == "btime")
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gauge("node_boot_time_seconds")(null, x[1]);
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else if (x[0] == "processes")
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counter("node_forks_total")(null, x[1]);
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else if (x[0] == "procs_running")
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gauge("node_procs_running_total")(null, x[1]);
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else if (x[0] == "procs_blocked")
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gauge("node_procs_blocked_total")(null, x[1]);
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}

‎prometheus-node-exporter-ucode/files/base/entropy.uc‎

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gauge("node_entropy_available_bits", "Bits of available entropy.")
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(null, oneline("/proc/sys/kernel/random/entropy_avail"));
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gauge("node_entropy_pool_size_bits", "Bits of entropy pool.")
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(null, oneline("/proc/sys/kernel/random/poolsize"));

‎prometheus-node-exporter-ucode/files/base/filefd.uc‎

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const x = wsplit(oneline("/proc/sys/fs/file-nr"));
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if (length(x) < 3)
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return false;
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gauge("node_filefd_allocated")(null, x[0]);
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gauge("node_filefd_maximum")(null, x[2]);

‎prometheus-node-exporter-ucode/files/base/loadavg.uc‎

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const x = wsplit(oneline("/proc/loadavg"));
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if (length(x) < 3)
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return false;
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gauge("node_load1")(null, x[0]);
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gauge("node_load5")(null, x[1]);
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gauge("node_load15")(null, x[2]);

‎prometheus-node-exporter-ucode/files/base/meminfo.uc‎

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let f = fs.open("/proc/meminfo");
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if (!f)
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return false;
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let line;
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while (line = nextline(f)) {
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const x = wsplit(line);
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if (length(x) < 2)
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continue;
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if (substr(x[0], -1) != ":")
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continue;
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let name;
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if (substr(x[0], -2) == "):")
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name = replace(substr(x[0], 0, -2), "(", "_");
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else
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name = substr(x[0], 0, -1);
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gauge(`node_memory_${name}_bytes`)
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(null, x[2] == "kB" ? x[1] * 1024 : x[1]);
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}

‎prometheus-node-exporter-ucode/files/base/netclass.uc‎

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const root = "/sys/class/net/";
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const devices = fs.lsdir(root);
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const dev_length = length(devices);
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if (dev_length < 1)
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return false;
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const m_info = gauge("node_network_info");
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const m_speed = gauge("node_network_speed_bytes");
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const metrics = {
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addr_assign_type: gauge("node_network_address_assign_type"),
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carrier: gauge("node_network_carrier"),
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carrier_changes: counter("node_network_carrier_changes_total"),
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carrier_down_count: counter("node_network_carrier_down_changes_total"),
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carrier_up_count: counter("node_network_carrier_up_changes_total"),
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dev_id: gauge("node_network_device_id"),
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dormant: gauge("node_network_dormant"),
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flags: gauge("node_network_flags"),
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ifindex: gauge("node_network_iface_id"),
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iflink: gauge("node_network_iface_link"),
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link_mode: gauge("node_network_iface_link_mode"),
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mtu: gauge("node_network_mtu_bytes"),
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name_assign_type: gauge("node_network_name_assign_type"),
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netdev_group: gauge("node_network_net_dev_group"),
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type: gauge("node_network_protocol_type"),
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tx_queue_len: gauge("node_network_transmit_queue_length"),
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};
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for (let i = 0; i < dev_length; i++) {
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const devroot = root + devices[i] + "/";
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m_info({
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device: devices[i],
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address: oneline(devroot + "address"),
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broadcast: oneline(devroot + "broadcast"),
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duplex: oneline(devroot + "duplex"),
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operstate: oneline(devroot + "operstate"),
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ifalias: oneline(devroot + "ifalias"),
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}, 1);
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}
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for (let m in metrics) {
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for (let i = 0; i < dev_length; i++) {
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metrics[m]({ device: devices[i] }, oneline(root + devices[i] + "/" + m));
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}
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}
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for (let i = 0; i < dev_length; i++) {
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const speed = int(oneline(root + devices[i] + "/" + "speed"));
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if (speed > 0)
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m_speed({ device: devices[i] }, speed * 1000 * 1000 / 8);
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}

‎prometheus-node-exporter-ucode/files/base/netdev.uc‎

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const f = fs.open("/proc/net/dev");
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if (!f)
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return false;
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const metrics = [
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null,
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counter("node_network_receive_bytes_total"),
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counter("node_network_receive_packets_total"),
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counter("node_network_receive_errs_total"),
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counter("node_network_receive_drop_total"),
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counter("node_network_receive_fifo_total"),
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counter("node_network_receive_frame_total"),
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counter("node_network_receive_compressed_total"),
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counter("node_network_receive_multicast_total"),
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counter("node_network_transmit_bytes_total"),
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counter("node_network_transmit_packets_total"),
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counter("node_network_transmit_errs_total"),
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counter("node_network_transmit_drop_total"),
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counter("node_network_transmit_fifo_total"),
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counter("node_network_transmit_colls_total"),
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counter("node_network_transmit_carrier_total"),
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counter("node_network_transmit_compressed_total"),
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];
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// Per-counter results array
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/* results[i] = { dev1: value, dev2: value, ... } */
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let results = [];
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for (let i = 0; i < length(metrics); i++)
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results[i] = {};
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// Parse file first
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let line;
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for (let k = 0; line = nextline(f); k++) {
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if (k < 2)
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continue; // skip the header lines
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const x = wsplit(ltrim(line), " ");
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const dev = substr(x[0], 0, -1);
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for (let i = 1; i < length(x); i++) {
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results[i][dev] = x[i];
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}
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}
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// Build label objects
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let label_cache = {};
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for (let i = 1; i < length(results); i++) {
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for (let dev in results[i]) {
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if (!(dev in label_cache))
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label_cache[dev] = { device: dev };
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}
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}
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// Emit metrics grouped by counter
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for (let i = 1; i < length(metrics); i++) {
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const metric = metrics[i];
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if (!metric)
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continue;
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for (let dev in results[i]) {
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metric(label_cache[dev], results[i][dev]);
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}
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}
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return true;

‎prometheus-node-exporter-ucode/files/base/selinux.uc‎

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const mode = oneline("/sys/fs/selinux/enforce");
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const enabled = gauge("node_selinux_enabled");
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if (mode == null) {
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enabled(null, 0);
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return;
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}
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enabled(null, 1);
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gauge("node_selinux_current_mode")(null, mode);

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