#if !defined(monitoring_statistics_included)
#define monitoring_statistics_included

#include "monitoring_annotations.idl"  

@autoid @default_nested(TRUE) @observable_name("")
module monitoring {
        /* --------- Support for statistical metrics  ----------- */
    @appendable
    @observable_unit
    @observable_view(level=0, select="mean")
    @observable_view(level=1, select="min;max")
    @observable_view(level=2, select="%")
    struct Int32Stat {
        uint32 period_ms;
        uint32 count;
        int32 mean;
        int32 min;
        int32 max;
    };
    
    @appendable
    @observable_unit
    @observable_view(level=0, select="mean")
    @observable_view(level=1, select="min;max")
    @observable_view(level=2, select="%")
    struct PercentStat {
        uint32 period_ms;
        uint32 count;
        uint8 mean;
        uint8 min;
        uint8 max;
    };
    
    @appendable
    @observable_unit
    @observable_view(level=0, select="mean")
    @observable_view(level=1, select="min;max")
    @observable_view(level=2, select="%")
    struct FloatStat {
        uint32 period_ms;
        uint32 count;
        float mean;
        float min;
        float max;
    };

    @appendable
    struct SendStat { 
        @observable(distribution=PERIODIC) @unit("#/s") FloatStat samples_per_s;
        @observable(distribution=PERIODIC) @unit("B/s") FloatStat bytes_per_s;
    };

    @appendable
    struct ReceiveStat { 
        @observable(distribution=PERIODIC) @unit("#/s") FloatStat samples_per_s;
        @observable(distribution=PERIODIC) @unit("B/s") FloatStat bytes_per_s;
        @observable(distribution=PERIODIC) @unit("ms")  FloatStat latency_ms;
    };

    @appendable
    struct NetworkUtilization {
        @observable(distribution=PERIODIC) @unit("#/s") FloatStat in_net_pkts;
        @observable(distribution=PERIODIC) @unit("B/s") FloatStat in_net_bytes;
        @observable(distribution=PERIODIC) @unit("#/s") FloatStat out_net_pkts;
        @observable(distribution=PERIODIC) @unit("B/s") FloatStat out_net_bytes;
    };
    
    @appendable
    @observable_unit(distribution=PERIODIC)
    struct ProcessMemoryUtilization {
        @unit("B") uint64 resident_memory_bytes;
        @unit("B") uint64 virtual_memory_bytes;
    };

    @appendable
    @observable_unit(distribution=ON_CHANGE)
    struct HostPlatformResources {
        @unit("#")   uint32       cpu_cores;
        @unit("B")   uint64       memory_bytes;
    };

    @appendable
    struct HostPlatformUtilization {
        @observable_name("cpu_usage_percent")
        @observable(distribution=PERIODIC) @unit("%")   PercentStat              cpu_percent;
        @observable(distribution=PERIODIC) @unit("%")   uint8                    used_memory_percent;
        @observable                                     NetworkUtilization       network_usage;           
        @observable(distribution=PERIODIC) @unit("sec") uint32                   uptime_sec;
    };

    @appendable
    struct ProcessPlatformUtilization {
        @observable_name("cpu_usage_percent")
        @observable(distribution=PERIODIC) @unit("%")   PercentStat              cpu_percent;
        @observable                                     ProcessMemoryUtilization memory_usage;
        @observable                                     NetworkUtilization       network_usage;           
        @observable(distribution=PERIODIC) @unit("sec") uint32                   uptime_sec;
    };

}; // End of module monitoring
#endif  /* monitoring_statistics_included */