# for a simple setup, cadence-server.nomad.hcl does it all.
# use cadence-web.nomad.hcl for web ui service.

# see files 3 to 6 to run each server service component individually.
# comes handy when you must allocate resources and/or measure metrics 
# more precisely.
#
# individual service jobs can be mixed with cadence-server.nomad.hcl
# on the same cluster without conflict.

# currently requires you to run cassandra schema migrations manually
# (run 1 job with 0.11.0-auto-setup image)

job cadence-server {
  datacenters = ["dc1"]
  type        = "service"
  priority    = 75

  # constraint {
  #   attribute = "${meta.tags}"
  #   operator  = "set_contains"
  #   value     = "cadence-services"
  # }

  group cadence-server {
    count = 3

    constraint {
      distinct_hosts = true
    }

    task cadence-server {
      driver       = "docker"
      kill_timeout = "30s"

      config {
        image        = "ubercadence/server:0.11.0"
        network_mode = "host"
        volumes      = [
          "local/dynamicconfig.yml:/etc/cadence/config/dynamicconfig/dynamicconfig.yml"
        ]
      }

      service {
        name = "cadence-frontend"
        port = "frontend"

        check {
          type           = "tcp"
          interval       = "5s"
          timeout        = "15s"
          initial_status = "passing"
        }
      }

      service {
        name = "cadence-history"
        port = "history"

        check {
          type           = "tcp"
          interval       = "5s"
          timeout        = "15s"
          initial_status = "passing"
        }
      }

      service {
        name = "cadence-matching"
        port = "matching"

        check {
          type           = "tcp"
          interval       = "5s"
          timeout        = "15s"
          initial_status = "passing"
        }
      }

      service {
        name = "cadence-worker"
        port = "worker"

        check {
          type           = "tcp"
          interval       = "5s"
          timeout        = "15s"
          initial_status = "passing"
        }
      }

      service {
        name = "cadence-server"
        tags = ["metrics", "metrics-port=${NOMAD_PORT_prometheus}"]
      }

      env {
        # change requires db reset
        NUM_HISTORY_SHARDS = 4

        LOG_LEVEL                = "info"
        SERVICES                 = "frontend,history,matching,worker"
        BIND_ON_IP               = "${NOMAD_IP_frontend}"
        CASSANDRA_SEEDS          = "cassandra-cluster1-node1.node.consul,cassandra-cluster1-node2.node.consul,cassandra-cluster1-node3.node.consul"
        DB                       = "cassandra"
        RF                       = 3
        KEYSPACE                 = "cadence"
        VISIBILITY_KEYSPACE      = "cadence_visibility"
        SKIP_SCHEMA_SETUP        = true
        DYNAMIC_CONFIG_FILE_PATH = "/etc/cadence/config/dynamicconfig/dynamicconfig.yml"
        RINGPOP_BOOTSTRAP_MODE   = "dns"
        RINGPOP_SEEDS            = "cadence-frontend.service.consul:7933,cadence-history.service.consul:7934,cadence-matching.service.consul:7935,cadence-worker.service.consul:7939"
        PROMETHEUS_ENDPOINT      = "${NOMAD_ADDR_prometheus}"
      }

      template {
        change_mode = "noop"
        destination = "local/dynamicconfig.yml"
        data        = <<EOH
---
system.minRetentionDays:
- value: 0
  constraints: {}
system.historyArchivalStatus:
- value: "disabled"
  constraints: {}
system.visibilityArchivalStatus:
- value: "disabled"
  constraints: {}
frontend.enableClientVersionCheck:
- value: true
  constraints: {}
frontend.visibilityListMaxQPS:
- value: 100
  constraints: {}
history.EnableConsistentQueryByDomain:
- value: true
  constraints: {}
EOH
      }

      resources {
        cpu    = 2999
        memory = 2048

        network {
          mbits = 100

          port frontend {
            static = 7933
          }
          port history {
            static = 7934
          }
          port matching {
            static = 7935
          }
          port worker {
            static = 7939
          }
          port prometheus {}
        }
      }

      meta {
        last_run_at = "Tue Apr 14 23:16:50 IST 2020"
      }
    }

    restart {
      attempts = 5
      delay    = "5s"
      mode     = "delay"
      interval = "1m"
    }
  }

  migrate {
    max_parallel     = 1
    health_check     = "checks"
    min_healthy_time = "15s"
    healthy_deadline = "60s"
  }

  update {
    max_parallel      = 1
    min_healthy_time  = "15s"
    healthy_deadline  = "1m"
    progress_deadline = "2m"
    auto_revert       = true
    auto_promote      = true
    canary            = 1
    stagger           = "5s"
  }
}