invalid JSON with nomad inspect <job>

[ygersie]

I use hashi-ui a lot and of it's awesome features is to up/down-scale taskgroups. This functionality however got broken with the 0.6 release if you don't have an update {} stanza specified in the job.

Reproduce:

job "example" {
  datacenters = ["zone1"]
  group "cache" {
    count = 1
    task "redis" {
      driver = "docker"
      config {
        image = "redis:3.2"
        port_map {
          db = 6379
        }
      }

      resources {
        cpu    = 500
        memory = 256
        network {
          mbits = 1
          port "db" {}
        }
      }

      service {
        name = "global-redis-check"
        tags = ["global", "cache"]
        port = "db"
        check {
          name     = "alive"
          type     = "tcp"
          interval = "10s"
          timeout  = "2s"
        }
      }
    }
  }
}

now nomad inspect example shows:

        "Update": {
            "AutoRevert": false,
            "Canary": 0,
            "HealthCheck": "",
            "HealthyDeadline": 0,
            "MaxParallel": 0,
            "MinHealthyTime": 0,
            "Stagger": 0
        }

Because hashiui fetches this from the API and re-posts the JSON job with an updated count I get the following validation errors from the API:

2017/08/30 11:24:34.306754 [ERR] http: Request /v1/jobs?region=ams1&wait=60000ms, error: 1 error(s) occurred:

* Task group cache validation failed: 1 error(s) occurred:

* 5 error(s) occurred:

* Invalid health check given: ""
* Max parallel can not be less than one: 0 < 1
* Healthy deadline must be greater than zero: 0s
* Minimum healthy time must be less than healthy deadline: 0s > 0s
* Stagger must be greater than zero: 0s

Issue also posted here jippi/hashi-ui#302

[ygersie]

Thanks for the quick fix Alex!

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