sysutils/nut_exporter: new port

Add a port for https://github.com/DRuggeri/nut_exporter which is a
Prometheus (net-mgmt/prometheus2) exporter for the "Network UPS tools"
(sysutils/nut).

PR:	267485
Approved by: pkubaj (mentor)
Differential Revision: https://reviews.freebsd.org/D37883

sysutils/Makefile

@@ -829,6 +829,7 @@
     SUBDIR += ntpstat
     SUBDIR += nut
     SUBDIR += nut-devel
+    SUBDIR += nut_exporter
     SUBDIR += nvclock
     SUBDIR += nvimpager
     SUBDIR += nvme-cli

sysutils/nut_exporter/Makefile

@@ -0,0 +1,38 @@
+PORTNAME=       nut_exporter
+DISTVERSIONPREFIX=      v
+DISTVERSION=    2.5.0
+CATEGORIES=     sysutils
+
+MAINTAINER=     bsd@j-star.org
+COMMENT=        Prometheus exporter for the Network UPS Tools server
+WWW=            https://github.com/DRuggeri/nut_exporter
+
+LICENSE=        APACHE20
+LICENSE_FILE=   ${WRKSRC}/LICENSE
+
+USES=           go:modules
+USE_GITHUB=     yes
+GH_ACCOUNT=     DRuggeri
+GH_TUPLE=       \
+		alecthomas:kingpin:v2.2.6:alecthomas_kingpin/vendor/gopkg.in/alecthomas/kingpin.v2 \
+		alecthomas:template:fb15b899a751:alecthomas_template/vendor/github.com/alecthomas/template \
+		alecthomas:units:f65c72e2690d:alecthomas_units/vendor/github.com/alecthomas/units \
+		beorn7:perks:v1.0.1:beorn7_perks/vendor/github.com/beorn7/perks \
+		cespare:xxhash:v2.1.1:cespare_xxhash_v2/vendor/github.com/cespare/xxhash/v2 \
+		go-kit:log:v0.2.0:go_kit_log/vendor/github.com/go-kit/log \
+		go-logfmt:logfmt:v0.5.1:go_logfmt_logfmt/vendor/github.com/go-logfmt/logfmt \
+		golang:protobuf:v1.4.3:golang_protobuf/vendor/github.com/golang/protobuf \
+		golang:sys:ebe580a85c40:golang_sys/vendor/golang.org/x/sys \
+		matttproud:golang_protobuf_extensions:v1.0.1:matttproud_golang_protobuf_extensions/vendor/github.com/matttproud/golang_protobuf_extensions \
+		pkg:errors:v0.9.1:pkg_errors/vendor/github.com/pkg/errors \
+		prometheus:client_golang:v1.11.0:prometheus_client_golang/vendor/github.com/prometheus/client_golang \
+		prometheus:client_model:v0.2.0:prometheus_client_model/vendor/github.com/prometheus/client_model \
+		prometheus:common:v0.32.1:prometheus_common/vendor/github.com/prometheus/common \
+		prometheus:procfs:v0.6.0:prometheus_procfs/vendor/github.com/prometheus/procfs \
+		protocolbuffers:protobuf-go:v1.26.0-rc.1:protocolbuffers_protobuf_go/vendor/google.golang.org/protobuf \
+		robbiet480:go.nut:bd8f121e1fa1:robbiet480_go_nut/vendor/github.com/robbiet480/go.nut
+
+USE_RC_SUBR=    nut_exporter
+PLIST_FILES=    bin/nut_exporter
+
+.include <bsd.port.mk>

sysutils/nut_exporter/distinfo

@@ -0,0 +1,37 @@
+TIMESTAMP = 1671310398
+SHA256 (DRuggeri-nut_exporter-v2.5.0_GH0.tar.gz) = 676591c3ea30dd716aac9697ced083d49f9bc6350cdeeb1e8e03819bebacd8a2
+SIZE (DRuggeri-nut_exporter-v2.5.0_GH0.tar.gz) = 200768
+SHA256 (alecthomas-kingpin-v2.2.6_GH0.tar.gz) = 4624eae43489de8a71ea60efaf6744c581b6bd62909f7514c484c1ea0efaba5a
+SIZE (alecthomas-kingpin-v2.2.6_GH0.tar.gz) = 44383
+SHA256 (alecthomas-template-fb15b899a751_GH0.tar.gz) = 2e2a44375eca48ce941182504b5d13aa98182b9a3f64ace33bfda52208bd0f5e
+SIZE (alecthomas-template-fb15b899a751_GH0.tar.gz) = 55339
+SHA256 (alecthomas-units-f65c72e2690d_GH0.tar.gz) = ece06024b01821e013bd7158dfe8ec8cc697f586ce8d3cfaa22edde8c2f022c3
+SIZE (alecthomas-units-f65c72e2690d_GH0.tar.gz) = 4925
+SHA256 (beorn7-perks-v1.0.1_GH0.tar.gz) = 98db84bb0224a26094e6adba91b7ee7a1a7ace28cb648d818f8e779e6a19f825
+SIZE (beorn7-perks-v1.0.1_GH0.tar.gz) = 10867
+SHA256 (cespare-xxhash-v2.1.1_GH0.tar.gz) = 0ee31178d2c5a1249be4e26294a2f428008dc4e1ecbbfbe47f74e41026df1148
+SIZE (cespare-xxhash-v2.1.1_GH0.tar.gz) = 9292
+SHA256 (go-kit-log-v0.2.0_GH0.tar.gz) = 5dfaf2a831debe95b84ce6e9c889a9cff162720a73fd0ab61cb151d2cc649b5c
+SIZE (go-kit-log-v0.2.0_GH0.tar.gz) = 29069
+SHA256 (go-logfmt-logfmt-v0.5.1_GH0.tar.gz) = a9a93f7cbb92a53a587fda196bc040264a625e76064495e95cb3e907f9a93499
+SIZE (go-logfmt-logfmt-v0.5.1_GH0.tar.gz) = 12115
+SHA256 (golang-protobuf-v1.4.3_GH0.tar.gz) = 5736f943f8647362f5559689df6154f3c85d261fb088867c8a68494e2a767610
+SIZE (golang-protobuf-v1.4.3_GH0.tar.gz) = 171969
+SHA256 (golang-sys-ebe580a85c40_GH0.tar.gz) = b70e2301ad08c3ae255b004b8160f866798b95c0c1f88f12641343ed81ce523b
+SIZE (golang-sys-ebe580a85c40_GH0.tar.gz) = 1197502
+SHA256 (matttproud-golang_protobuf_extensions-v1.0.1_GH0.tar.gz) = 2def0ee6f6b12b1efc0e3007d89f598608a072610e805c3655ea9d13c3ead49b
+SIZE (matttproud-golang_protobuf_extensions-v1.0.1_GH0.tar.gz) = 37184
+SHA256 (pkg-errors-v0.9.1_GH0.tar.gz) = 56bfd893023daa498508bfe161de1be83299fcf15376035e7df79cbd7d6fa608
+SIZE (pkg-errors-v0.9.1_GH0.tar.gz) = 13415
+SHA256 (prometheus-client_golang-v1.11.0_GH0.tar.gz) = a3bc3312bde4182e507042ca0e7ca88aac6656bbf8d516d732e34c3f14bb612a
+SIZE (prometheus-client_golang-v1.11.0_GH0.tar.gz) = 168706
+SHA256 (prometheus-client_model-v0.2.0_GH0.tar.gz) = 4ab1be9cdfa702d7f49beeb09a256bcc6a2aad55e8a0a37e7732a46934264e12
+SIZE (prometheus-client_model-v0.2.0_GH0.tar.gz) = 10986
+SHA256 (prometheus-common-v0.32.1_GH0.tar.gz) = de06f354e24dec3bfeba9a3bd43bd3170b4231dfff3cd338b688a6e8c8050af6
+SIZE (prometheus-common-v0.32.1_GH0.tar.gz) = 146585
+SHA256 (prometheus-procfs-v0.6.0_GH0.tar.gz) = 6ad7a23cf4db9fa5dbf2c5d8fbd0fbf5ffe48e3ddb7bf15f9359813d764ce73c
+SIZE (prometheus-procfs-v0.6.0_GH0.tar.gz) = 169898
+SHA256 (protocolbuffers-protobuf-go-v1.26.0-rc.1_GH0.tar.gz) = a2b3581fb291ffdfe080cc16eb7b0b13295105a441fc0554a105368b7e208e66
+SIZE (protocolbuffers-protobuf-go-v1.26.0-rc.1_GH0.tar.gz) = 1270311
+SHA256 (robbiet480-go.nut-bd8f121e1fa1_GH0.tar.gz) = 1f8427de879e5d5804292b54d97ffce5c8c5eb94669a4447380cb90a7539a64d
+SIZE (robbiet480-go.nut-bd8f121e1fa1_GH0.tar.gz) = 6790

sysutils/nut_exporter/files/nut_exporter.in

@@ -0,0 +1,73 @@
+#!/bin/sh
+
+# PROVIDE: nut_exporter
+# REQUIRE: LOGIN
+# KEYWORD: shutdown
+
+# Add the following lines to /etc/rc.conf to enable nut_exporter:
+# nut_exporter_enable="YES"
+#
+# nut_exporter_enable (bool):
+#     Set it to YES to enable nut_exporter.
+#     Set to NO by default.
+# nut_exporter_listen_address (string):
+#     IP address and port to listen on.
+#     Default is ":9199".
+# nut_exporter_user (string):
+#     User to run as.
+#     Default is "www".
+# nut_exporter_metrics_namespace (string):
+#     Metrics namespace.
+#     Default is "network_ups_tools".
+# nut_exporter_tls_cert_file (string):
+#     Path to a file that contains the TLS certificate (PEM format).
+#     Default is "".
+# nut_exporter_tls_key_file (string):
+#     Path to a file that contains the TLS private key (PEM format).
+#     Default is "".
+
+. /etc/rc.subr
+
+name=nut_exporter
+rcvar=nut_exporter_enable
+
+load_rc_config $name
+
+nut_exporter_enable=${nut_exporter_enable:-"NO"}
+nut_exporter_listen_address=${nut_exporter_listen_address:-":9199"}
+nut_exporter_user=${nut_exporter_user:-"www"}
+nut_exporter_metrics_namespace=${nut_exporter_metrics_namespace:-"network_ups_tools"}
+nut_exporter_tls_cert_file=${nut_exporter_tls_cert_file:-""}
+nut_exporter_tls_key_file=${nut_exporter_tls_key_file:-""}
+
+pidfile="/var/run/${name}/${name}.pid"
+
+if [ -z ${nut_exporter_tls_cert_file} ] ; then
+        cert_arg=""
+else
+        cert_arg="--web.tls.cert_file=${nut_exporter_tls_cert_file}"
+fi
+if [ -z ${nut_exporter_tls_key_file} ] ; then
+        key_arg=""
+else
+        key_arg="--web.tls.key_file=${nut_exporter_tls_key_file}"
+fi
+
+procname=%%PREFIX%%/bin/nut_exporter
+command=/usr/sbin/daemon
+command_args="-p ${pidfile} -t ${name} -T ${name} ${procname} \
+        --web.listen-address=${nut_exporter_listen_address} \
+        --metrics.namespace=${nut_exporter_metrics_namespace} \
+        ${cert_arg} ${key_arg}"
+
+start_precmd=start_precmd
+start_precmd()
+{
+        if [ ! -e "/var/run/${name}" ] ; then
+		# Note that ownership of the pidfile determines the user daemon runs under.
+                install -d -o ${nut_exporter_user} /var/run/${name};
+        fi
+}
+
+load_rc_config $name
+run_rc_command "$1"

sysutils/nut_exporter/pkg-descr

@@ -0,0 +1,4 @@
+A Prometheus exporter for the Network UPS Tools server.
+The exporter is written in a way to permit an administrator to scrape one or
+many UPS devices visible to a NUT client as well as one or all NUT variables.
+A single instance of this exporter can scrape one or many NUT servers.