layouts/shortcodes/download-links.html

{{- $downloadVersion := (.Site.Params.currentProjectVersion) -}}
{{- $primaryDownloadUrl := (.Site.Params.dynamicDownloadPathUrl) -}}
{{- $secondaryDownloadUrl := (.Site.Params.downloadPathUrl) -}}

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

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

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

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

{{- $downloadFilePath := (print $downloadVersion "/" $project "-" $qualifier $downloadVersion "-" $extension) -}}

<a href="{{ $primaryDownloadUrl }}/{{ $downloadFilePath }}">{{ .Get "label" }} {{ $downloadVersion }}</a>
[<a href="{{ $secondaryDownloadUrl }}/{{ $downloadFilePath }}.asc">OpenPGP</a>]
[<a href="{{ $secondaryDownloadUrl }}/{{ $downloadFilePath }}.sha256">SHA-256</a>]
[<a href="{{ $secondaryDownloadUrl }}/{{ $downloadFilePath }}.sha512">SHA-512</a>]