module Cisco-IOS-XE-environment-oper {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XE-environment-oper";

    prefix environment-ios-xe-oper;

    import cisco-semver {
      prefix cisco-semver;
    }

    organization "Cisco Systems, Inc.";

    contact
      "Cisco Systems, Inc.
     Customer Service

     Postal: 170 W Tasman Drive
     San Jose, CA 95134

     Tel: +1 1800 553-NETS

     E-mail: cs-yang@cisco.com";

    description
      "This module contains a collection of YANG definitions
     for monitoring Environment of a Network Element.
     Copyright (c) 2016-2019 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2019-05-01" {
      description "Added semantic version";
      reference
        "2.2.0";

    }

    revision "2018-10-29" {
      description
        "- A new field sensor type is added
       - Cleaned up spelling errors in descriptions.";
      reference
        "2.1.0";

    }

    revision "2017-11-27" {
      description
        "Sensor thresholds. RPMs as units. Changed enumeration names to be lowercase and hyphenated";
      reference
        "2.0.0";

    }

    revision "2017-02-07" {
      description "Initial revision";
      reference
        "1.0.0";

    }

    cisco-semver:module-version "2.2.0";
    cisco-semver:module-version "2.1.0";
    cisco-semver:module-version "2.0.0";
    cisco-semver:module-version "1.0.0";

    typedef sensor-type {
      type enumeration {
        enum "temperature" {
          value 0;
        }
        enum "voltage" {
          value 1;
        }
        enum "current" {
          value 2;
        }
        enum "power" {
          value 3;
        }
        enum "fan" {
          value 4;
        }
        enum "unknown-sensor" {
          value 5;
        }
      }
      description "Type of the Sensor";
    }

    typedef sensor-units-type {
      type enumeration {
        enum "watts" {
          value 0;
        }
        enum "celsius" {
          value 1;
        }
        enum "millivolts" {
          value 2;
        }
        enum "amperes" {
          value 3;
        }
        enum "volts-dc" {
          value 4;
        }
        enum "volts-ac" {
          value 5;
        }
        enum "milliamperes" {
          value 6;
        }
        enum "unknown" {
          value 7;
        }
        enum "revolutions-per-minute" {
          value 8;
        }
      }
      description
        "Units used by various sensors";
    }

    grouping sensor-name-loc-key {
      description
        "Each sensor representing a data node is
       uniquely identified by a name and a location based key";
      leaf name {
        type string;
        description
          "Name of the sensor component.
         This includes all physical components of the chassis -
         both fixed and pluggable";
      }

      leaf location {
        type string;
        description "Sensor location";
      }
    }  // grouping sensor-name-loc-key

    grouping sensor-params {
      description "Sensor parameters";
      leaf state {
        type string;
        description
          "A description of the current state of the sensor";
      }

      leaf current-reading {
        type uint32;
        description
          "Numerical value of the current sensor reading in sensor-units";
      }

      leaf sensor-units {
        type sensor-units-type;
        description
          "Units corresponding to the current-reading value";
      }

      leaf low-critical-threshold {
        type int32;
        description
          "Alarm threshold under which a critical
         alarm will be signalled";
      }

      leaf low-normal-threshold {
        type int32;
        description
          "No alarm above this threshold";
      }

      leaf high-normal-threshold {
        type int32;
        description
          "No alarm below this threshold";
      }

      leaf high-critical-threshold {
        type int32;
        description
          "Alarm threshold over which a critical
         alarm will be signalled";
      }

      leaf sensor-name {
        type sensor-type;
        description "Name of the Sensor";
      }
    }  // grouping sensor-params

    container environment-sensors {
      config false;
      description
        "Data nodes for Environmental Monitoring";
      list environment-sensor {
        key "name location";
        description
          "The list of components on the device chassis";
        uses environment-ios-xe-oper:sensor-params;

        uses environment-ios-xe-oper:sensor-name-loc-key;
      }  // list environment-sensor
    }  // container environment-sensors
  }  // module Cisco-IOS-XE-environment-oper