{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "title": "Instance Status",
    "description": "Status and Statistics for a MATLAB Production
                    Server Instance",
    "type": "object",
    "properties": {
        "instancePath": {
            "description": "Filesystem path for the server 
                            instance",
            "type": "string"
        },
        "started": {
            "type": "boolean"
        },
        "license": {
            "type": "object",
            "properties": {
                "status": {
                    "enum": [ "CHECKED_OUT", "IN_GRACE_PERIOD",
                              "GRACE_PERIOD_EXPIRED" ]
                },
                "type": {
                    "enum": [ "INVALID", "UNKNOWN", "COMPILED", 
                              "TRIAL", "EDU", "COMM" ]
                },
                "number": {"type": "string"}
            },
            "required": ["status"]
        },
        "statistics": {
            "type": "object",
            "properties": {
                "sampleIntervalMS": {
                    "description": "The difference in upTime 
                                    between the two samples, 0 if
                                    only a single sample was
                                    taken",
                    "type": "number"
                },
                "localTime": {
                    "description": "Local Time at server in format 
                                    YYYY.MM.DD HH.MM.SS.SSSSSS",
                    "type": "string"
                },
                "upTime": {
                    "description": "Time since server start in
                                    fractional seconds",
                    "type": "number"
                },
                "cpuTime": {
                    "description": "CPU time consumed by all server
                                    processes in fractional 
                                    seconds",
                    "type": "number"
                },
                "cpuPercentage": {
                    "description": "CPU utilzation, computed using
                                    change in cpuTime and upTime
                                    between two samples",
                    "type": "number"
                },
                "totalRequestsReceived": {
                    "description": "The number of valid requests
                                    received",
                    "type": "integer"
                },
                "totalRequestsStarted": {"type": "integer"},
                "totalRequestsFailedToStart": {
                    "description": "The number of requests that
                                    could not be started",
                    "type": "integer"
                },
                "totalRequestsFinishedHttpSuccess": {
                    "type": "integer"
                },
                "totalRequestsFinishedHttpError": {
                    "description": "Note: does not includes
                                    requests that failed to start",
                    "type": "integer"
                },
                "memoryWorkingSet": {
                    "description": "Amount of memory resident in
                                    physical memory for all
                                    processes (KiB)",
                    "type": "number"
                },
                "throughput": {
                    "description": "Requests retired per second,
                                    computed using the number of
                                    requests finished or failed to
                                    start over two samples",
                    "type": "number"
                },
                "totalQueueTimeMS": {
                    "description": "Sum of the wait times for
                                    currently queued requests",
                    "type": "number"
                }
            }
        }
    },
    "required": ["instancePath", "started"]
}