# Maintainer: George Rawlinson <george@rawlinson.net.nz>

pkgname=prometheus-bind-exporter
_pkgname=bind_exporter
pkgver=0.4.0
pkgrel=1
pkgdesc="Prometheus exporter for BIND metrics"
arch=('x86_64')
url="https://github.com/prometheus-community/bind_exporter"
license=('Apache')
depends=('glibc')
makedepends=('go')
optdepends=('bind: for monitoring a local BIND server')
source=(
  "$pkgname-$pkgver.tar.gz::$url/archive/v$pkgver.tar.gz"
  'systemd.service'
  'sysusers.conf'
)
b2sums=('ec391fa2db90d02f3f468d8db5b6ada47f84853401d4f00fdfd9be7a142cc4305de0fdedd3aa553ab08d78ddd55ce948f098eb4f7a6e9412f5327d2499eb65c1'
        '83ac2fb9b39f10f9eb130fc566887a5dc70447265d9d567221ceccf83a9fe7ad8035dfa751ecefe9681c64fd8ddb260b3e370f956350b9cab699eed507d9affc'
        '739b1e4e7ab277096d0875ed14d61f223e7b990e7081721e4638aebad9c3beccc270ce9944384784af8eab035dbb34a86badae687c065291bfb384abfb42573a')

prepare() {
  cd "$_pkgname-$pkgver"

  # create folder for build output
  mkdir build

  # download dependencies
  go mod vendor
}

build() {
  cd "$_pkgname-$pkgver"
  go build -v \
    -buildmode=pie \
    -trimpath \
    -mod=vendor \
    -modcacherw \
    -ldflags "-linkmode external -extldflags ${LDFLAGS} \
    -X github.com/prometheus/common/version.Version=$pkgver \
    -X github.com/prometheus/common/version.Revision=$pkgver \
    -X github.com/prometheus/common/version.Branch=tarball \
    -X github.com/prometheus/common/version.BuildUser=someone@builder \
    -X github.com/prometheus/common/version.BuildDate=$(date -d@"$SOURCE_DATE_EPOCH" +%Y%m%d-%H:%M:%S)" \
    -o build .
}

check() {
  cd "$_pkgname-$pkgver"
  go test ./...
}

package() {
  # systemd integration
  install -Dm644 systemd.service "$pkgdir/usr/lib/systemd/system/$pkgname.service"
  install -Dm644 sysusers.conf "$pkgdir/usr/lib/sysusers.d/$pkgname.conf"

  # binary
  install -Dm755 -t "$pkgdir/usr/bin" "$_pkgname-$pkgver/build/$_pkgname"
}