layouts/shortcodes/maven-download-links.html

{{- $downloadVersion := (.Site.Params.currentProjectVersion) -}}
{{- $primaryDownloadUrl := (.Site.Params.mavenCentralDownloadPathUrl) -}}

{{- if eq (.Get "version") "previous" -}}
  {{- $downloadVersion = (.Site.Params.previousProjectVersion) -}}
{{- end -}}

{{- $project := "nifi" -}}
{{- with .Get "project" -}}
  {{- $project = . -}}
{{- end -}}

{{- $qualifier := "" -}}
{{- with .Get "qualifier" -}}
  {{- $qualifier = . -}}
{{- end -}}

{{- $extension := "" -}}
{{- with .Get "extension" -}}
  {{- $extension = . -}}
{{- end -}}

{{- $module := (print $project "-" $qualifier) -}}

{{- $downloadFilePath := (print $module "/" $downloadVersion "/" $module "-" $downloadVersion "." $extension) -}}

<a href="{{ $primaryDownloadUrl }}/{{ $downloadFilePath }}">{{ .Get "label" }} {{ $downloadVersion }}</a>
[<a href="{{ $primaryDownloadUrl }}/{{ $downloadFilePath }}.asc">OpenPGP</a>]
[<a href="{{ $primaryDownloadUrl }}/{{ $downloadFilePath }}.sha1">SHA-1</a>]