Forwarding fluentd internal tag to loggly automatically

td-agent.conf

#
# install https://github.com/tagomoris/fluent-plugin-forest
#

# test
<source>
  type tail
  format /^(?<log>.*)$/
  tag test
  path /tmp/test.log
</source>

# loggly
<match **>
  type forest
  subtype loggly
  <template>
    loggly_url https://logs-01.loggly.com/inputs/TOKEN/tag/${tag}
  </template>
</match>