84 lines
2.6 KiB
Ruby
84 lines
2.6 KiB
Ruby
class NodeExporter < Formula
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desc "Prometheus exporter for machine metrics"
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homepage "https://prometheus.io/"
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url "https://github.com/prometheus/node_exporter/archive/v0.18.1.tar.gz"
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sha256 "9ddf187c462f2681ab4516410ada0e6f0f03097db6986686795559ea71a07694"
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revision 1
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bottle do
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cellar :any_skip_relocation
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sha256 "174b28c6400abf9a2c566ea67d0928ad3e49b5a1cf3c1a1b9a813dc19f103094" => :catalina
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sha256 "2cd46fee60f0551f948e81ac31f60184374cba3370a7e1c9dd01b7c55cbd25d3" => :mojave
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sha256 "e5ff3e073b7da6ae318b18b5952525706ac70426f01fd2aea3b4bb53b56ea23d" => :high_sierra
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end
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depends_on "go" => :build
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def install
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ENV["GOPATH"] = buildpath
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(buildpath/"src/github.com/prometheus/node_exporter").install buildpath.children
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cd "src/github.com/prometheus/node_exporter" do
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ldflags = %W[
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-X github.com/prometheus/common/version.Version=#{version}
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-X github.com/prometheus/common/version.BuildUser=Homebrew
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]
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system "go", "build", "-o", bin/"node_exporter",
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"-ldflags", ldflags.join(" "),
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"github.com/prometheus/node_exporter"
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prefix.install_metafiles
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end
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end
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def caveats; <<~EOS
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When used with `brew services`, node_exporter's configuration is stored as command line flags in
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#{etc}/node_exporter.args
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Example configuration:
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echo --web.listen-address :9101 > #{etc}/node_exporter.args
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For the full list of options, execute
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node_exporter -h
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EOS
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end
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plist_options :manual => "node_exporter"
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def plist; <<~EOS
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>Label</key>
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<string>#{plist_name}</string>
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<key>ProgramArguments</key>
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<array>
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<string>sh</string>
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<string>-c</string>
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<string>#{opt_bin}/node_exporter $(< #{etc}/node_exporter.args)</string>
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</array>
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<key>RunAtLoad</key>
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<true/>
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<key>KeepAlive</key>
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<false/>
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<key>StandardErrorPath</key>
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<string>#{var}/log/node_exporter.err.log</string>
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<key>StandardOutPath</key>
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<string>#{var}/log/node_exporter.log</string>
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</dict>
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</plist>
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EOS
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end
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test do
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assert_match /node_exporter/, shell_output("#{bin}/node_exporter --version 2>&1")
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begin
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pid = fork { exec bin/"node_exporter" }
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sleep 2
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assert_match "# HELP", shell_output("curl -s localhost:9100/metrics")
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ensure
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Process.kill("SIGINT", pid)
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Process.wait(pid)
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end
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end
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end
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