---
# Copyright 2018--present Open Networking Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Values file for SEBA log aggregation infra
# NOTE: must start this chart with the name "logging":
#   helm install -n logging logging
# ortherwise the elasticsearch hostname won't work properly in the other containers

# elasticstack config
# ref: https://github.com/helm/charts/tree/master/incubator/elasticsearch
elasticsearch:
  client:
    serviceType: "NodePort"
  master:
    persistence:
      storageClass: "local-ssd"
      size: "5Gi"
  data:
    persistence:
      storageClass: "local-hdd"
      size: "10Gi"

# kibana config
# ref: https://github.com/helm/charts/tree/master/stable/kibana
kibana:
  enabled: true
#  dashboardImport:
#    dashboards: |-
#
  service:
    type: "NodePort"
    nodePort: 30601
  env:
    ELASTICSEARCH_URL: "http://logging-elasticsearch-client:9200"

# logstash config
# ref: https://github.com/helm/charts/tree/master/incubator/logstash
logstash:
  enabled: true
  elasticsearch:
    host: "logging-elasticsearch-client"

  # we have kafka, so persistence isn't needed
  # ref: https://www.elastic.co/guide/en/logstash/current/persistent-queues.html
  persistence:
    enabled: false

  # Probe default delays are too short, which puts logstash into a reboot loop
  livenessProbe:
    initialDelaySeconds: 120

  readinessProbe:
    initialDelaySeconds: 120

  # 'config' k/v are turned into env vars for logstash container
  # ref: https://www.elastic.co/guide/en/logstash/current/docker-config.html#docker-env-config
  # config:
  #   LOG_LEVEL: trace

  # Kafka input plugin
  # ref: https://www.elastic.co/guide/en/logstash/current/plugins-inputs-kafka.html
  inputs:
    main: |-
      input {
        kafka {
          bootstrap_servers => "cord-kafka:9092"
          client_id => "logstash_ck"
          codec => json { charset => "UTF-8" }
          consumer_threads => 1
          decorate_events => true
          metadata_max_age_ms => 60000 # recheck for new topics every minute
          topics_pattern => 'authentication.*|dhcp.*|onos.*|onu.*|voltha.*|xos.*'
          type => "cord-kafka"
        }
      }

  filters:
    main: |-
      filter {
        mutate {
          add_field => {
            "kafka_topic" => "%{[@metadata][kafka][topic]}"
            "kafka_key" => "%{[@metadata][kafka][key]}"
            "kafka_timestamp" => "%{[@metadata][kafka][timestamp]}"
          }
        }

        date {
          match => [ "ts", "UNIX" ]
          target => "voltha_ts"
          tag_on_failure => []
        }

        json {
          source => "data"
          target => "data"
          skip_on_invalid_json => true
        }
      }

  outputs:
    main: |-
      output {
        elasticsearch {
          hosts => ["${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}"]
        }
      }

# fluentd-elasticsearch config
# ref: https://github.com/helm/charts/tree/master/stable/fluentd-elasticsearch
# forwards k8s logs from nodes to elasticsearch
fluentd-elasticsearch:
  enabled: false
  elasticsearch:
    host: "logging-elasticsearch-client"