app-metrics/postfix_exporter: Add ebuild with systemd unit file.

Package-Manager: Portage-2.3.76, Repoman-2.3.16

app-metrics/postfix_exporter/files/postfix_exporter.confd

@@ -0,0 +1,9 @@
+#  -postfix.logfile_path string
+#        Path where Postfix writes log entries. This file will be truncated by this exporter. (default "/var/log/postfix_exporter_input.log")
+#  -postfix.showq_path string
+#        Path at which Postfix places its showq socket. (default "/var/spool/postfix/public/showq")
+#  -web.listen-address string
+#        Address to listen on for web interface and telemetry. (default ":9154")
+#  -web.telemetry-path string
+#        Path under which to expose metrics. (default "/metrics")
+command_args=""

app-metrics/postfix_exporter/files/postfix_exporter.initd

@@ -0,0 +1,19 @@
+#!/sbin/openrc-run
+# Copyright 2016-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+description="Prometheus Exporter for Postfix Metrics"
+pidfile=${pidfile:-"/run/${RC_SVCNAME}.pid"}
+user=${user:-${RC_SVCNAME}}
+group=${group:-${RC_SVCNAME}}
+
+command="/usr/bin/postfix_exporter"
+command_args="${command_args:-}"
+command_background="true"
+start_stop_daemon_args="--user ${user} --group ${group} \
+	--stdout /var/log/${RC_SVCNAME}/${RC_SVCNAME}.log \
+	--stderr /var/log/${RC_SVCNAME}/${RC_SVCNAME}.log"
+
+depend() {
+	after net
+}

app-metrics/postfix_exporter/files/postfix_exporter.logrotated

@@ -0,0 +1,7 @@
+/var/log/postfix_exporter/postfix_exporter.log {
+	missingok
+	size 5M
+	rotate 3
+	compress
+	copytruncate
+}

app-metrics/postfix_exporter/files/postfix_exporter.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Postfix Exporter
+
+[Service]
+User=postfix_exporter
+EnvironmentFile=/etc/conf.d/postfix_exporter
+ExecStart=/usr/bin/postfix_exporter $command_args
+
+[Install]
+WantedBy=multi-user.target