create_env_files.erb.tmpl

mkdir -p /var/vcap/jobs/{{.Name}}/config/env

<%
  # vim: ft=eruby

  def env_file_perms(fn)
    <<~EOS
      if [[ "${ENV_FILE_OWNER:-}" != "" ]] ; then
        chown ${ENV_FILE_OWNER}:${ENV_FILE_OWNER} #{fn}
      fi
      chmod 0600 #{fn}
    EOS
  end

  def env_file_content(v)
    case v
    when Array
      v.collect(&:chomp).join("\n").chomp + "\n"
    when String
      v.chomp + "\n"
    else
      v.to_json + "\n"
    end
  end

  def env_file_writer(v, env)
    path = "/var/vcap/jobs/{{.Name}}/config/env/#{env}"

    case v
    when Hash
      v.collect do |k, v|
        fn = "#{path}_#{k}"
        "cat > #{fn} <<\"ENVGEN_EOF\"\n#{env_file_content(v)}ENVGEN_EOF\n#{env_file_perms(fn)}"
      end.join("\n\n")
    else
      "cat > #{path} <<\"ENVGEN_EOF\"\n#{env_file_content(v)}ENVGEN_EOF\n#{env_file_perms(path)}"
    end
  end
-%>

{{ range $prop := .EnvProperties -}}
{{- if $prop.EnvFile -}}
<% if_p("{{$prop.Name}}") do |v| -%>
<%= env_file_writer(v, "{{$prop.EnvFile}}") %>
<% end -%>
{{ end -}}
{{- end -}}