module an-telemetry-ext {
    // namespace
    namespace "urn:an:yang:an-telemetry-ext";

    prefix "an-telemetry-ext";

    import an-telemetry {
        prefix an-telemetry;
    }

    description "Data model which creates the condition for the telemetry.";

    revision 2020-11-05;

    grouping  telemetry-sensor-path-condition-op-config {
        description
            "Parameters for a filter criterion.";
        
        leaf op-field{
            type string {
                length "1..63";
            }
            description
                "Reference field in the filter criterion. Different paths support different reference fields.";
        }

        leaf op-type{
            type enumeration {
                enum eq {
                    value 0;
                    description
                        "Equal.";
                }
                enum gt {
                    value 1;
                    description
                        "Greater than.";
                }
                enum ge {
                    value 2;
                    description
                        "Greater than or equal.";
                }
                enum lt {
                    value 3;
                    description
                        "Less than.";
                }
                enum le {
                    value 4;
                    description
                        "Less than or equal.";
                }
            }
            description 
                "Reference to the op-type of the filter criterion.";
        }

        leaf op-value{
            type string {
                length "1..63";
            }
            description
                "Comparison value of the filter criterion.For the actual value range, see the definition of op-field in the YANG model.";
        }
            
    }
    
    grouping  telemetry-sensor-path-filter-condition-config {
        description
            "Parameters for filter criteria.";
        
        container conditions {
            description
                "Top level container for filter criteria, including the filter information such as op-field, op-type, and op-value.";

            list condition {
                key "op-field op-type op-value";
                max-elements  "2";
                description
                    "List of filter criteria.";
                
                leaf "op-field" {
                    type leafref {
                        path "../config/op-field";
                    }
                    description
                        "Reference to the op-field of the filter criterion.";
                }
                
                leaf "op-type" {
                    type leafref {
                        path "../config/op-type";
                    }
                    description
                        "Reference to the op-type of the filter criterion.";
                }
                
                leaf "op-value" {
                    type leafref {
                        path "../config/op-value";
                    }
                    description
                        "Comparison value of the filter criterion. Op-value must be an integer and the maximum value range is [0, 4294967295]. For the actual value range, see the definition of op-field in the YANG model.";
                }
                
                container config {
                    description
                        "Configuration parameters for a filter criterion.";
                    uses  telemetry-sensor-path-condition-op-config;
                }
                container state {
                    config false;
                    description
                        "State information for a filter criterion.";
                    uses  telemetry-sensor-path-condition-op-config;
                }
            }
        }
    }
    
    grouping  telemetry-sensor-path-filter-attribute-config {
        description
            "Configuration parameters relating to the configured name of the telemetry sensor path filter.";
        
        leaf name {
            type string {
                length "1..8";
                pattern "[A-Za-z0-9]+";
            }
            description "Filter name for the telemetry sensor path filter.";
        }
        
        leaf condition-relation{
            type enumeration {
                enum and {
                    value 1;
                    description
                        "The relationship between filter criteria in a filter of a sampling path is and.";
                }
                enum or {
                    value 2;
                    description
                        "The relationship between filter criteria in a filter of a sampling path is or.";
                }
            }
            default "and";
            description 
                "Relationship between filter criteria in a filter of a sampling path.";
        }
    }
    
    grouping telemetry-sensor-path-filter-config {
            description
                "Condition-based filtering's parameter of the sampling path. If the conditions are met, the data is reported.";
            
            container filters {
                description
                    "Top level container for filters. If the filter criteria are met, sampled data is sent to a collector. A filter and heartbeat interval or redundancy suppression cannot be configured at the same time.";

                list filter {
                    key "name";
                    max-elements "1";
                    description
                        "Filter list of a sampling path.";
                    
                    leaf name {
                        type leafref {
                            path "../config/name";
                        }
                        description
                            "Filter name of a sampling path.";
                    }
                     
                    container config {
                        description
                            "Configuration parameters for a filter in a sampling path.";
                        uses telemetry-sensor-path-filter-attribute-config;
                    }
                    
                    container state {
                        config false;
                        description
                            "State information for a filter in a sampling path.";
                        uses telemetry-sensor-path-filter-attribute-config;
                    }

                    uses telemetry-sensor-path-filter-condition-config;
                }
            }    
    }

    augment "/an-telemetry:telemetry-system/an-telemetry:sensor-groups/an-telemetry:sensor-group/an-telemetry:sensor-paths/an-telemetry:sensor-path"{
        description
            "List of paths in the model which together comprise a sensor grouping. Filters for each path to exclude items are also provided.";

        uses telemetry-sensor-path-filter-config;
    }
}