module Cisco-IOS-XE-appqoe-events {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XE-appqoe-events";

    prefix appqoe-ios-xe-events;

    import Cisco-IOS-XE-appqoe-types {
      prefix appqoe-types-ios-xe;
    }
    import Cisco-IOS-XE-ios-common-oper {
      prefix ios-common-ios-xe-oper;
    }
    import ietf-inet-types {
      prefix inet;
    }
    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 AppQoE events operational data.
     Copyright (c) 2017-2018, 2020-2021 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2021-07-01" {
      description
        "- Added Service Node Group name field and cause enum.
       - Added VS app mismatch cause";
      reference
        "1.2.0";

    }

    revision "2021-03-01" {
      description
        "- Added clear leaf to alarm notification.";
      reference
        "1.1.0";

    }

    revision "2020-11-01" {
      description "Initial revision";
      reference
        "1.0.0";

    }

    cisco-semver:module-version "1.2.0";
    cisco-semver:module-version "1.1.0";
    cisco-semver:module-version "1.0.0";

    typedef appqoe-alarm-id {
      type enumeration {
        enum "alarm-id-undefined" {
          value 0;
          description
            "An unexpected condition has been detected";
        }
        enum "alarm-id-sn-state-held-down" {
          value 1;
          description
            "Service Node in Held-Down state";
        }
        enum "alarm-id-sn-state-down" {
          value 2;
          description
            "Service Node in Down state";
        }
        enum "alarm-id-sn-state-green" {
          value 3;
          description
            "Service Node in Green state";
        }
        enum "alarm-id-sn-state-yellow" {
          value 4;
          description
            "Service Node in Yellow state";
        }
        enum "alarm-id-sn-state-red" {
          value 5;
          description
            "Service Node in Red state";
        }
        enum "alarm-id-site-id-mismatch" {
          value 6;
          description
            "Service Node Site-ID does not match Service Controller Site-ID";
        }
        enum "alarm-id-system-ip" {
          value 7;
          description
            "There is an issue with the device System-IP";
        }
        enum "alarm-id-unknown-site-id" {
          value 8;
          description
            "Service Node Site-ID is unknown or not defined";
        }
      }
      description "Alarm ID";
    }

    typedef appqoe-event-id {
      type enumeration {
        enum "event-id-undefined" {
          value 0;
          description
            "An unexpected condition has been detected";
        }
        enum "event-id-sn-state-green" {
          value 1;
          description
            "Service Node in Green state";
        }
      }
      description "Event ID";
    }

    typedef appqoe-cause {
      type enumeration {
        enum "cause-undefined" {
          value 0;
          description
            "The cause is undefined";
        }
        enum "cause-bringup" {
          value 1;
          description
            "Service has been started";
        }
        enum "cause-shutdown" {
          value 2;
          description
            "Service has been stopped";
        }
        enum "cause-configuration-error" {
          value 3;
          description
            "Configuration error encountered";
        }
        enum "cause-internal-error" {
          value 4;
          description
            "Internal error encountered";
        }
        enum "cause-resource-error" {
          value 5;
          description
            "Resource error encountered";
        }
        enum "cause-resource-overload" {
          value 6;
          description
            "A resource has been exhausted";
        }
        enum "cause-connection-established" {
          value 7;
          description
            "Connection to peer has been established";
        }
        enum "cause-connection-lost" {
          value 8;
          description
            "Connection to peer has been lost";
        }
        enum "cause-too-many-restarts" {
          value 9;
          description
            "An AppQoE service has been restarted multiple times";
        }
        enum "cause-unknown-system-ip" {
          value 10;
          description
            "System-IP is unknown or not defined";
        }
        enum "cause-unknown-site-id" {
          value 11;
          description
            "Service Node Site-ID is unknown or not defined";
        }
        enum "cause-site-id-mismatch" {
          value 12;
          description
            "Service Node Site-ID does not match Service Controller Site-ID";
        }
        enum "cause-sng-mismatch" {
          value 13;
          description
            "Service Node Group configuration mismatch";
        }
        enum "cause-vs-app-version-mismatch" {
          value 14;
          description
            "Virtual Service application version is not compatible with device image version";
        }
        enum "cause-cps-limit-exceeded" {
          value 15;
          description
            "Connections per second (rate) limit has been exceeded for the platform";
        }
      }
      description
        "AppQoE Notification cause/reason";
    }

    typedef appqoe-action {
      type enumeration {
        enum "action-undefined" {
          value 0;
          description
            "The action is undefined";
        }
        enum "action-na" {
          value 1;
          description
            "No action needs to be taken";
        }
        enum "action-check-network-conn" {
          value 2;
          description
            "Verify network connection to Service Node is UP";
        }
        enum "action-check-appqoe-state" {
          value 3;
          description
            "Verify AppQoE feature is in Operational";
        }
        enum "action-restart-appqoe" {
          value 4;
          description
            "Restart the AppQoE service";
        }
        enum "action-resolve-config-error" {
          value 5;
          description
            "Resolve the Configuration error";
        }
        enum "action-contact-tac" {
          value 6;
          description
            "Please contact TAC for further assistance";
        }
        enum
          "action-install-compatible-version" {
          value 7;
          description
            "Please install a compatible virtual application version";
        }
        enum "action-reduce-cps-rate" {
          value 8;
          description
            "Connections per second (rate) limit has been exceeded for the platform, reduce connection rate to ensure it is below the threshold limit";
        }
      }
      description
        "Recommended action to be taken to resolve the issue";
    }

    notification appqoe-alarm {
      description
        "AppQoE Alarm Notification";
      leaf severity-level {
        type ios-common-ios-xe-oper:notification-severity;
        description
          "Alarm notification severity";
      }

      leaf host-name {
        type string;
        description
          "Service Controller Hostname";
      }

      leaf system-ip {
        type inet:ip-address;
        description
          "Service Controller System-IP";
      }

      leaf alarm-id {
        type appqoe-alarm-id;
        description
          "Uniquely identifies the alarm type";
      }

      leaf device-mode {
        type appqoe-types-ios-xe:appqoe-device-mode;
        description "Device Mode";
      }

      leaf module {
        type string;
        description "AppQoE Module";
      }

      leaf headline {
        type string;
        description
          "Brief description of the alarm";
      }

      leaf cause {
        type appqoe-cause;
        description
          "If known, provides an explanation of why the alarm was generated";
      }

      leaf action {
        type appqoe-action;
        description
          "Any action, including steps that can be taken";
      }

      leaf detail {
        type string;
        description
          "Detailed description of the alarm";
      }

      leaf sn-system-ip {
        type inet:ip-address;
        description "Service Node System-IP";
      }

      leaf clear {
        type boolean;
        description
          "Indicates if alarm is being raised or cleared";
      }

      leaf sng-name {
        type string;
        description
          "Service Node Group Name";
      }
    }  // notification appqoe-alarm

    notification appqoe-event {
      description
        "AppQoE Event Notification";
      leaf severity-level {
        type ios-common-ios-xe-oper:notification-severity;
        description
          "Alarm notification severity";
      }

      leaf host-name {
        type string;
        description
          "Service Controller Hostname";
      }

      leaf system-ip {
        type inet:ip-address;
        description
          "Service Controller System-IP";
      }

      leaf event-id {
        type appqoe-event-id;
        description
          "Uniquely identifies the event type";
      }

      leaf device-mode {
        type appqoe-types-ios-xe:appqoe-device-mode;
        description "Device Mode";
      }

      leaf module {
        type string;
        description "AppQoE Module";
      }

      leaf headline {
        type string;
        description
          "Brief description of the alarm";
      }

      leaf cause {
        type appqoe-cause;
        description
          "If known, provides an explanation of why the alarm was generated";
      }

      leaf action {
        type appqoe-action;
        description
          "Any action, including steps that can be taken";
      }

      leaf detail {
        type string;
        description
          "Detailed description of the alarm";
      }

      leaf sn-system-ip {
        type inet:ip-address;
        description "Service Node System-IP";
      }

      leaf sng-name {
        type string;
        description
          "Service Node Group Name";
      }
    }  // notification appqoe-event
  }  // module Cisco-IOS-XE-appqoe-events