module yuma-netconf {

    yang-version 1;

    namespace
      "urn:ietf:params:xml:ns:netconf:base:1.0";

    prefix nc;

    import ietf-inet-types {
      prefix inet;
    }
    import ietf-yang-types {
      prefix yang;
    }
    import ietf-netconf-acm {
      prefix nacm;
    }
    import yuma-ncx {
      prefix ncx;
    }

    contact
      "Translated by Andy Bierman.
      Send comments to <support@yumaworks.com>.";

    description
      "NETCONF Protocol 
        * Data Types
        * Abstract object for PDU components
        * RPCs
       Translated from RFC 4741 and RFC 6241.

     Copyright (c) 2008 - 2015 Andy Bierman and the persons
     identified as authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or
     without modification, is permitted pursuant to, and subject
     to the license terms contained in, the BSD 3-Clause License
     http://opensource.org/licenses/BSD-3-Clause";

    revision "2015-04-30" {
      description
        "Added last-modified and etag to some operations";
    }

    revision "2013-09-28" {
      description
        "Added nacm:default-deny-all to some operations.";
    }

    revision "2013-09-23" {
      description
        "Added ncx:last-modifed and ncx:etag support to
          <load-config> operation and <config> node";
    }

    revision "2013-07-07" {
      description
        "Added support for trace-id attribute in <rpc> element";
    }

    revision "2012-10-05" {
      description
        "Updated typedefs to RFC versions where they overlapped.
          Remove nacm extension usage; not needed due to
          server code which not not allow any client session
          to invoke this operation, even superuser.";
    }

    revision "2011-05-30" {
      description
        "Update for NETCONF base:1.1 version";
    }

    revision "2010-05-24" {
      description
        "Align rpc statements with ietf-netconf.yang";
    }

    revision "2010-05-06" {
      description
        "Remove nacm:secure on delete-config;
        Fix bugs in parameters that did not match ietf-netconf.yang.";
    }

    revision "2009-04-10" {
      description
        "Remove rpc-type extension usage.";
    }

    revision "2009-02-24" {
      description
        "Change yang:uri to inet:uri (import moved).";
    }

    revision "2008-08-30" {
      description
        "Add some NCX extensions to automate some server processing.";
    }

    revision "2008-04-26" {
      description
        "Change get-config and get output from 'config' to 'data'.";
    }

    revision "2008-04-16" {
      description
        "Initial conversion from netconf.ncx version 0.6.";
    }


    extension get-filter-element-attributes {
      description
        "If this extension is present within the
       an 'anyxml' statement named 'filter', which must be
       conceptually defined within the RPC input section
       for the 'get' and 'get-config' RPC operations,
       then the following unqualified XML attribute is
       supported within the 'filter' element, within
       a 'get' or 'get-config' protocol operation:

         type : optional attribute with allowed
                value strings 'subtree' and 'xpath'.
                If missing, the default value is 'subtree'.

       If the 'xpath' feature is supported, then the
       following unqualified XML attribute is
       also supported:

         select: optional attribute containing a
                 string representing an XPath expression.
                 The 'type' attribute must be equal to 'xpath'
                 if this attribute is present.";
    }

    feature writable-running {
      description
        "NETCONF :writable-running capability;
        If the server advertises the :writable-running
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.2.";

    }

    feature candidate {
      description
        "NETCONF :candidate capability;
        If the server advertises the :candidate
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.3.";

    }

    feature confirmed-commit {
      if-feature candidate;
      description
        "NETCONF :confirmed-commit:1.1 capability;
        If the server advertises the :confirmed-commit:1.1
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.4.";

    }

    feature rollback-on-error {
      description
        "NETCONF :rollback-on-error capability;
        If the server advertises the :rollback-on-error
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.5.";

    }

    feature validate {
      description
        "NETCONF :validate:1.1 capability;
        If the server advertises the :validate:1.1
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.6.";

    }

    feature startup {
      description
        "NETCONF :startup capability;
        If the server advertises the :startup
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.7.";

    }

    feature url {
      description
        "NETCONF :url capability;
        If the server advertises the :url
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.8.";

    }

    feature xpath {
      description
        "NETCONF :xpath capability;
        If the server advertises the :xpath
        capability for a session, then this feature must
        also be enabled for that session.  Otherwise,
        this feature must not be enabled.";
      reference
        "RFC 6241, section 8.9.";

    }

    typedef Language {
      type string {
        pattern
          '[a-zA-Z]{1,8}(-[a-zA-Z0-9]{1,8})*';
      }
      description
        "XML language type for LangString";
    }

    typedef session-id-type {
      type uint32 {
        range "1..max";
      }
      description "NETCONF Session Id";
    }

    typedef session-id-or-zero-type {
      type uint32;
      description
        "NETCONF Session Id or Zero to indicate none";
    }

    typedef ConfigURIType {
      type inet:uri;
    }

    typedef LangString {
      type string {
        ncx:metadata "Language lang";
      }
      description
        "XML string with a language attribute.";
    }

    typedef MessageId {
      type string {
        length "1..4095";
      }
      description
        "NETCONF message-id attribute";
    }

    typedef ErrorType {
      type enumeration {
        enum "transport" {
          value 0;
        }
        enum "rpc" {
          value 1;
        }
        enum "protocol" {
          value 2;
        }
        enum "application" {
          value 3;
        }
      }
      description "NETCONF Error Type";
    }

    typedef error-tag-type {
      type enumeration {
        enum "in-use" {
          value 0;
          description
            "The request requires a resource that
             already is in use.";
        }
        enum "invalid-value" {
          value 1;
          description
            "The request specifies an unacceptable value for one
             or more parameters.";
        }
        enum "too-big" {
          value 2;
          description
            "The request or response (that would be generated) is
             too large for the implementation to handle.";
        }
        enum "missing-attribute" {
          value 3;
          description
            "An expected attribute is missing.";
        }
        enum "bad-attribute" {
          value 4;
          description
            "An attribute value is not correct; e.g., wrong type,
             out of range, pattern mismatch.";
        }
        enum "unknown-attribute" {
          value 5;
          description
            "An unexpected attribute is present.";
        }
        enum "missing-element" {
          value 6;
          description
            "An expected element is missing.";
        }
        enum "bad-element" {
          value 7;
          description
            "An element value is not correct; e.g., wrong type,
             out of range, pattern mismatch.";
        }
        enum "unknown-element" {
          value 8;
          description
            "An unexpected element is present.";
        }
        enum "unknown-namespace" {
          value 9;
          description
            "An unexpected namespace is present.";
        }
        enum "access-denied" {
          value 10;
          description
            "Access to the requested protocol operation, or
             data model is denied because authorization failed.";
        }
        enum "lock-denied" {
          value 11;
          description
            "Access to the requested lock is denied because the
             lock is currently held by another entity.";
        }
        enum "resource-denied" {
          value 12;
          description
            "Request could not be completed because of
             insufficient resources.";
        }
        enum "rollback-failed" {
          value 13;
          description
            "Request to rollback some configuration change (via
             rollback-on-error or discard-changes operations) was
             not completed for some reason.";
        }
        enum "data-exists" {
          value 14;
          description
            "Request could not be completed because the relevant
             data model content already exists. For example,
             a 'create' operation was attempted on data that
             already exists.";
        }
        enum "data-missing" {
          value 15;
          description
            "Request could not be completed because the relevant
             data model content does not exist.  For example,
             a 'delete' operation was attempted on
             data that does not exist.";
        }
        enum "operation-not-supported" {
          value 16;
          description
            "Request could not be completed because the requested
             operation is not supported by this implementation.";
        }
        enum "operation-failed" {
          value 17;
          description
            "Request could not be completed because the requested
             operation failed for some reason not covered by
             any other error condition.";
        }
        enum "partial-operation" {
          value 18;
          description
            "This error-tag is obsolete, and SHOULD NOT be sent
             by servers conforming to this document.";
        }
        enum "malformed-message" {
          value 19;
          description
            "A message could not be handled because it failed to
             be parsed correctly. For example, the message is not
             well-formed XML or it uses an invalid character set.";
        }
      }
      description "NETCONF Error Tag";
      reference
        "RFC 6241, Appendix A.";

    }

    typedef error-severity-type {
      type enumeration {
        enum "error" {
          value 0;
          description "Error severity";
        }
        enum "warning" {
          value 1;
          description "Warning severity";
        }
      }
      description "NETCONF Error Severity";
      reference
        "RFC XXXX, section 4.3.";

    }

    typedef TestOptionType {
      type enumeration {
        enum "test-then-set" {
          value 0;
        }
        enum "set" {
          value 1;
        }
        enum "test-only" {
          value 2;
        }
      }
      description
        "NETCONF 'test-option' Element Content.";
    }

    typedef ErrorOptionType {
      type enumeration {
        enum "stop-on-error" {
          value 0;
        }
        enum "continue-on-error" {
          value 1;
        }
        enum "rollback-on-error" {
          value 2;
        }
      }
      default "stop-on-error";
      description
        "NETCONF 'error-option' Element Content";
    }

    typedef FilterType {
      type enumeration {
        enum "subtree" {
          value 0;
        }
        enum "xpath" {
          value 1;
        }
      }
      default "subtree";
      description
        "NETCONF 'filter' Attribute Content";
    }

    typedef SelectString {
      type string {
        ncx:xpath;
      }
      description
        "XPath string used in the select attribute.";
    }

    typedef edit-operation-type {
      type enumeration {
        enum "merge" {
          value 0;
          description
            "The configuration data identified by the
            element containing this attribute is merged
            with the configuration at the corresponding
            level in the configuration datastore identified
            by the target parameter.";
        }
        enum "replace" {
          value 1;
          description
            "The configuration data identified by the element
            containing this attribute replaces any related
            configuration in the configuration datastore
            identified by the target parameter.  If no such
            configuration data exists in the configuration
            datastore, it is created. Unlike a
            <copy-config> operation, which replaces the
            entire target configuration, only the configuration
            actually present in the config parameter is affected.";
        }
        enum "create" {
          value 2;
          description
            "The configuration data identified by the element
            containing this attribute is added to the
            configuration if and only if the configuration
            data does not already exist in the configuration
            datastore.  If the configuration data exists, an
            <rpc-error> element is returned with an
            <error-tag> value of 'data-exists'.";
        }
        enum "delete" {
          value 3;
          description
            "The configuration data identified by the element
            containing this attribute is deleted from the
            configuration if and only if the configuration
            data currently exists in the configuration
            datastore.  If the configuration data does not
            exist, an <rpc-error> element is returned with
            an <error-tag> value of 'data-missing'.";
        }
        enum "delete-all" {
          value 4;
          description
            "Delete all instances of a the data node.
            If at least one instance of the configuration
            data does not exist, an <rpc-error> element
             is returned with an <error-tag> value of
             'data-missing'. YumaPro Server ONLY!";
        }
        enum "remove" {
          value 5;
          description
            "The configuration data identified by the element
            containing this attribute is deleted from the
            configuration if the configuration
            data currently exists in the configuration
            datastore.  If the configuration data does not
            exist, the 'remove' operation is silently ignored
            by the server.";
        }
        enum "remove-all" {
          value 6;
          description
            "Remove all instances of a the data node.
            YumaPro Server ONLY!";
        }
      }
      default "merge";
      description
        "NETCONF 'operation' attribute values";
      reference
        "RFC XXXX, section 7.2.";

    }

    typedef DefaultOperationType {
      type enumeration {
        enum "merge" {
          value 0;
        }
        enum "replace" {
          value 1;
        }
        enum "none" {
          value 2;
        }
      }
      default "merge";
      description
        "NETCONF 'default-operation' Element Content";
    }

    typedef ConfirmTimeoutType {
      type uint32 {
        range "1..max";
      }
      units "seconds";
      default "600";
      description
        "NETCONF 'confirm-timeout' Element Content";
    }

    grouping NcCapabilities {
      description
        "Generic Capabilities List.";
      container capabilities {
        config false;
        leaf-list capability {
          type inet:uri;
          description
            "One Generic Capability URI.";
        }
      }  // container capabilities
    }  // grouping NcCapabilities

    container server-hello {
      ncx:hidden;
      ncx:abstract;
      description
        "Generic Server Hello Message Parameters.";
      uses NcCapabilities;

      leaf session-id {
        type session-id-type;
        config false;
      }
    }  // container server-hello

    container client-hello {
      ncx:hidden;
      ncx:abstract;
      description
        "Generic Client Hello Message Parameters.";
      uses NcCapabilities;
    }  // container client-hello

    grouping ErrorInfoContent {
      description
        "NETCONF standard 'error-info' Element Content;";
      leaf-list bad-attribute {
        type string;
        config false;
        description
          "Name of the missing or invalid XSD attribute.
          Used with missing-attribute, bad-attribute, and
          unknown-attribute error-tag values.";
      }

      leaf-list bad-element {
        type string;
        config false;
        description
          "Name of the element that contains (or should contain)
          an invalid XSD attribute when used with missing-attribute,
          bad-attribute, unknown-attribute, error-tag values.
          Name of an invalid or missing element when used with
          then missing-element, bad-element, unknown-element,
          and unknown-namespace error-tag values.";
      }

      leaf-list ok-element {
        type string;
        config false;
        description
          "Identifies an element in the data model
          for which the requested operation has been completed
          for that node and all its child nodes.  This element
          can appear zero or more times in the 'error-info'
          container.  Used with the partial-operation error-tag
          value.";
      }

      leaf-list err-element {
        type string;
        config false;
        description
          "Identifies an element in the data model
          for which the requested operation has failed for that
          node and all its child nodes.  This element
          can appear zero or more times in the 'error-info'
          container.   Used with the partial-operation error-tag
          value.";
      }

      leaf-list noop-element {
        type string;
        config false;
        description
          "Identifies an element in the data model
           for which the requested operation was not attempted for
           that node and all its child nodes.  This element
           can appear zero or more times in the <error-info>
           container.   Used with the partial-operation error-tag
           value.";
      }

      leaf session-id {
        type session-id-or-zero-type;
        config false;
        description
          "Session ID of session holding the
          requested lock, or zero to indicate a non-NETCONF
          entity holds the lock.";
      }
    }  // grouping ErrorInfoContent

    grouping RpcErrorType {
      description
        "NETCONF 'rpc-error' Element Content";
      leaf error-type {
        type ErrorType;
        mandatory true;
        description
          "Defines the conceptual layer that the error occurred.";
      }

      leaf error-tag {
        type error-tag-type;
        mandatory true;
        description
          "Contains a string identifying the error condition.";
      }

      leaf error-severity {
        type error-severity-type;
        mandatory true;
        description
          "Contains a string identifying the error severity, as
           determined by the device.";
      }

      leaf error-app-tag {
        type string;
        description
          "Contains a string identifying the data-model-specific
           or implementation-specific error condition, if one exists.
           This element will not be present if no appropriate 
           application error tag can be associated with a particular
           error condition.";
      }

      leaf error-path {
        type yang:xpath1.0;
        description
          "Contains the absolute XPath [2] expression identifying
          the element path to the node that is associated with the error
          being reported in a particular rpc-error element.  This element
         will not be present if no appropriate payload element can be
         associated with a particular error condition, or if the
         'bad-element' QString returned in the 'error-info' container is
         sufficient to identify the node associated with the error.  When
         the XPath expression is interpreted, the set of namespace
         declarations are those in scope on the rpc-error element,
         including the default namespace.";
      }

      leaf error-message {
        type LangString;
        description
          "Contains a string suitable for human display that
          describes the error condition.  This element will not be present
          if no appropriate message is provided for a particular error
          condition.  This element SHOULD include an xml:lang attribute.";
      }

      anyxml error-info {
        description
          "Contains protocol- or data-model-specific error content.
           This element will not be present if no such error content is
           provided for a particular error condition.  The list in 
           RFC 4741, Appendix A, defines any mandatory error-info content 
           for each error.  After any protocol-mandated content, a 
           data model definition may mandate that certain application-layer
           error information be included in the error-info container. 
           An implementation may include additional elements to 
           provide extended and/or implementation-specific debugging 
           information.";
      }
    }  // grouping RpcErrorType

    grouping RpcDataReplyType {
      description
        "NETCONF 'rpc-reply' Error and/or Data Content";
      list rpc-error {
        config false;
        uses RpcErrorType;
      }  // list rpc-error
    }  // grouping RpcDataReplyType

    grouping RpcOkReplyType {
      description
        "NETCONF 'rpc-reply' OK Content.";
      choice ok-or-error {
        leaf ok {
          type empty;
          config false;
          description
            "Sent in 'rpc-reply' messages if no errors or
             warnings occurred during the processing of an 'rpc' request.";
        }
        list rpc-error {
          config false;
          uses RpcErrorType;
        }  // list rpc-error
      }  // choice ok-or-error
    }  // grouping RpcOkReplyType

    grouping RpcReplyType {
      description
        "Generic NETCONF 'rpc-reply' content. ";
      choice ok-or-data-error {
        mandatory true;
        leaf ok {
          type empty;
          description
            "Sent in 'rpc-reply' messages if no errors or
             warnings occurred during the processing of an 'rpc' request.";
        }

        case data-error {
          uses RpcDataReplyType;
        }  // case data-error
      }  // choice ok-or-data-error
    }  // grouping RpcReplyType

    leaf operation {
      ncx:abstract;
      ncx:hidden;
      type edit-operation-type;
      description
        "Internal object for the nc:operation attribute.";
    }

    container rpc {
      ncx:metadata "MessageId message-id";
      ncx:abstract;
      description
        "Remote Procedure Call request message";
      reference
        "RFC 4741, section 4.1";

    }  // container rpc

    container rpc-reply {
      ncx:metadata "MessageId message-id";
      ncx:metadata "string trace-id";
      ncx:abstract;
      description
        "Remote Procedure Call response message";
      reference
        "RFC 4741, section 4.2";

      uses RpcReplyType;
    }  // container rpc-reply

    rpc get-config {
      description
        "Retrieve all or part of a specified configuration.";
      reference
        "RFC 4741, section 7.2";

      input {
        container source {
          description
            "Particular configuration to retrieve.";
          choice config-source {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              type empty;
            }
            leaf startup {
              if-feature startup;
              type empty;
              description
                "This is optional-to-implement on the server because
                 not all servers will support filtering for this
                 database.";
            }
          }  // choice config-source
        }  // container source

        anyxml filter {
          nc:get-filter-element-attributes;
          ncx:metadata "FilterType type";
          ncx:metadata "SelectString select";
          description
            "Subtree or Xpath filter to use.";
        }
      }

      output {
        container data {
          ncx:root;
          presence
            "An empty data container indicates that the
             request did not produce any results.";
          description
            "Copy of the source database subset which matched
             the filter criteria (if any).";
        }  // container data
      }
    }  // rpc get-config

    rpc edit-config {
      description
        "The 'edit-config' operation loads all or part of a specified
         configuration to the specified target configuration.  This
         operation allows the new configuration to be expressed in several
         ways, such as using a local file, a remote file, or inline.  If
         the target configuration does not exist, it will be created.  If a
         NETCONF peer supports the :url capability (Section 8.8), the <url>
         element can appear instead of the <config> parameter and should
         identify a local configuration file.

         The device analyzes the source and target configurations and
         performs the requested changes.  The target configuration is not
         necessarily replaced, as with the <copy-config> message.  Instead,
         the target configuration is changed in accordance with the
         source's data and requested operations.";
      reference
        "RFC 4741, section 7.2";

      input {
        container target {
          description
            "Particular configuration to edit.";
          choice config-target {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              if-feature writable-running;
              type empty;
            }
          }  // choice config-target
        }  // container target

        leaf default-operation {
          type DefaultOperationType;
          default "merge";
          description
            "Default operation to apply if not explicitly set.";
        }

        leaf test-option {
          if-feature validate;
          type TestOptionType;
          default "test-then-set";
          description
            "Test option if validate capability supported.
             The 'validate' capability must be present to set
             this object to 'test-then-set'.";
        }

        leaf error-option {
          type ErrorOptionType;
          default "stop-on-error";
          description
            "Error recovery option.";
        }

        choice edit-content {
          mandatory true;
          container config {
            ncx:root;
            ncx:metadata "string last-modified";
            ncx:metadata "string etag";
            description
              "Inline Config content: 'config' element.";
          }  // container config
          leaf url {
            if-feature url;
            type inet:uri;
            description
              "Pointer to Config content: 'url' element.";
          }
        }  // choice edit-content
      }
    }  // rpc edit-config

    rpc copy-config {
      description
        "Create or replace an entire configuration datastore with the
         contents of another complete configuration datastore.  If the
         target datastore exists, it is overwritten.  Otherwise, a new one
         is created, if allowed.

         If a NETCONF peer supports the :url capability (Section 8.8), the
         'url' element can appear as the <source> or <target> parameter.

         Even if it advertises the :writable-running capability, a device
         may choose not to support the <running/> configuration datastore
         as the <target> parameter of a <copy-config> operation.  A device
         may choose not to support remote-to-remote copy operations, where
         both the <source> and <target> parameters use the <url> element.

        If the source and target parameters identify the same URL or
        configuration datastore, an error MUST be returned with an error-
        tag containing invalid-value.";
      reference
        "RFC 4741, section 7.3";

      input {
        container target {
          description
            "Particular configuration to copy to.";
          choice config-target {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              if-feature writable-running;
              type empty;
              description
                "This is optional-to-implement on the server.";
            }
            leaf startup {
              if-feature startup;
              type empty;
            }
            leaf url {
              if-feature url;
              type inet:uri;
            }
          }  // choice config-target
        }  // container target

        container source {
          description
            "Particular configuration to copy from.";
          choice config-source {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              type empty;
            }
            leaf startup {
              if-feature startup;
              type empty;
            }
            leaf url {
              if-feature url;
              type inet:uri;
            }
            container config {
              ncx:root;
              ncx:metadata "string last-modified";
              ncx:metadata "string etag";
              description
                "Inline Config content: 'config' element.
                 Represents an entire 'stand-alone' 
                 configuration database, not a subset of 
                 the running database.";
            }  // container config
          }  // choice config-source
        }  // container source
      }
    }  // rpc copy-config

    rpc delete-config {
      nacm:default-deny-all;
      description
        "Delete a configuration datastore.  The 'running' configuration
         datastore cannot be deleted.

         If a NETCONF peer supports the :url capability (Section 8.8), the
         'url' element can appear as the <target> parameter.";
      reference
        "RFC 4741, section 7.4";

      input {
        container target {
          description
            "Particular configuration to delete.";
          choice config-target {
            mandatory true;
            leaf startup {
              if-feature startup;
              type empty;
            }
            leaf url {
              if-feature url;
              type inet:uri;
            }
          }  // choice config-target
        }  // container target
      }
    }  // rpc delete-config

    rpc lock {
      description
        "The lock operation allows the client to lock the configuration
         system of a device.  Such locks are intended to be short-lived and
         allow a client to make a change without fear of interaction with
         other NETCONF clients, non-NETCONF clients (e.g., SNMP and command
         line interface (CLI) scripts), and human users. ...";
      reference
        "RFC 4741, section 7.5";

      input {
        container target {
          description
            "Particular configuration to lock";
          choice config-target {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              type empty;
            }
            leaf startup {
              if-feature startup;
              type empty;
            }
          }  // choice config-target
        }  // container target
      }
    }  // rpc lock

    rpc unlock {
      description
        "The unlock operation is used to release a configuration lock,
         previously obtained with the 'lock' operation.

         An unlock operation will not succeed if any of the following
         conditions are true:

         *  the specified lock is not currently active

         *  the session issuing the <unlock> operation is not the same
            session that obtained the lock

         The server MUST respond with either an <ok> element or an
         'rpc-error'.";
      reference
        "RFC 4741, section 7.6";

      input {
        container target {
          description
            "Particular configuration to unlock.";
          choice config-target {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              type empty;
            }
            leaf startup {
              if-feature startup;
              type empty;
            }
          }  // choice config-target
        }  // container target
      }
    }  // rpc unlock

    rpc get {
      description
        "Retrieve running configuration and device state information.";
      reference
        "RFC 4741, section 7.7";

      input {
        anyxml filter {
          nc:get-filter-element-attributes;
          ncx:metadata "FilterType type";
          ncx:metadata "string select";
          description
            "This parameter specifies the portion of the system
             configuration and state data to retrieve.  If this parameter is
             empty, all the device configuration and state information is
             returned.

             The filter element may optionally contain a 'type' attribute.
             This attribute indicates the type of filtering syntax used
             within the filter element.  The default filtering mechanism in
             NETCONF is referred to as subtree filtering and is described in
             Section 6.  The value 'subtree' explicitly identifies this type
             of filtering.

             If the NETCONF peer supports the :xpath capability
             (Section 8.9), the value 'xpath' may be used to indicate that
             the select attribute of the filter element contains an XPath
             expression.";
        }
      }

      output {
        container data {
          ncx:root;
          presence
            "An empty data container indicates that the filter
             request did not match any results.";
          description
            "Copy of the 'running' database subset and/or state 
             data which matched the filter criteria (if any).";
        }  // container data
      }
    }  // rpc get

    rpc close-session {
      description
        "Request graceful termination of a NETCONF session.

         When a NETCONF server receives a <close-session> request, it will
         gracefully close the session.  The server will release any locks
         and resources associated with the session and gracefully close any
         associated connections.  Any NETCONF requests received after a
         'close-session' request will be ignored.";
      reference
        "RFC 4741, section 7.8";

    }  // rpc close-session

    rpc kill-session {
      nacm:default-deny-all;
      description
        "Force the termination of a NETCONF session.

         When a NETCONF entity receives a <kill-session> request for an
         open session, it will abort any operations currently in process,
         release any locks and resources associated with the session, and
         close any associated connections.

         If a NETCONF server receives a <kill-session> request while
         processing a confirmed commit (Section 8.4), it must restore the
         configuration to its state before the confirmed commit was issued.

         Otherwise, the <kill-session> operation does not roll back
         configuration or other device state modifications made by the
         entity holding the lock.";
      reference
        "RFC 4741, section 7.9";

      input {
        leaf session-id {
          type session-id-type;
          mandatory true;
          description
            "Particular session to kill.";
        }
      }
    }  // rpc kill-session

    rpc commit {
      if-feature candidate;
      description
        "When a candidate configuration's content is complete, the
         configuration data can be committed, publishing the data set to
         the rest of the device and requesting the device to conform to
         the behavior described in the new configuration.

         To commit the candidate configuration as the device's new
         current configuration, use the <commit> operation.

         The 'commit' operation instructs the device to implement the
         configuration data contained in the candidate configuration.
         If the device is unable to commit all of the changes in the
         candidate configuration datastore, then the running
         configuration MUST remain unchanged.  If the device does
         succeed in committing, the running configuration MUST be
         updated with the contents of the candidate configuration.

         If the system does not have the :candidate capability, the
         'commit' operation is not available.";
      reference
        "RFC 4741, section 8.3.4.1";

      input {
        leaf confirmed {
          if-feature confirmed-commit;
          type empty;
          description
            "Request a confirmed commit.";
          reference
            "RFC 4741, section 8.4.5.1";

        }

        leaf confirm-timeout {
          if-feature confirmed-commit;
          type ConfirmTimeoutType;
          description
            "Request a specific timeout period for a confirmed commit
             if 'confirmed-commit' capability supported.";
          reference
            "RFC 4741, section 8.4.5.1";

        }

        leaf persist {
          if-feature confirmed-commit;
          type string;
          description
            "This parameter is used to make a confirmed commit
            persistent.  A persistent confirmed commit is not aborted
            if the NETCONF session terminates.  The only way to abort a
            persistent confirmed commit it to let the timer expire, or
            to use the cancel-commit operation.

            The value of this parameter is a token that must be given
            in the 'persist-id' parameter of commit or cancel-commit in
            order to confirm or cancel the persistent confirmed commit.

            The token should be a random string.";
          reference
            "RFC 6241, section 8.3.4.1.";

        }

        leaf persist-id {
          if-feature confirmed-commit;
          type string;
          description
            "This parameter is given in order to commit a persistent
            confirmed commit.  The value must be equal to the value
            given in the 'persist' parameter to the commit operation.
            If it does not match, the operation fails with an
           'invalid-value' error.";
          reference
            "RFC 6241, section 8.3.4.1.";

        }
      }
    }  // rpc commit

    rpc discard-changes {
      if-feature candidate;
      description
        "If the client decides that the candidate configuration should
         not be committed, the 'discard-changes' operation can be used
         to revert the candidate configuration to the current running 
         configuration.

         This operation discards any uncommitted changes by resetting
         the candidate configuration with the content of the running
         configuration.";
      reference
        "RFC 4741, section 8.3.4.2";

    }  // rpc discard-changes

    rpc cancel-commit {
      if-feature confirmed-commit;
      description
        "This operation is used to cancel an ongoing confirmed commit.
        If the confirmed commit is persistent, the parameter
        'persist-id' must be given, and it must match the value of the
        'persist' parameter.";
      reference
        "RFC 6241, section 8.4.4.1.";

      input {
        leaf persist-id {
          type string;
          description
            "This parameter is given in order to cancel a persistent
            confirmed commit.  The value must be equal to the value
            given in the 'persist' parameter to the commit operation.
            If it does not match, the operation fails with an
           'invalid-value' error.";
        }
      }
    }  // rpc cancel-commit

    rpc validate {
      if-feature validate;
      description
        "Validates the contents of the specified configuration.";
      reference
        "RFC 4741, section 8.6.4.1";

      input {
        container source {
          description
            "Particular configuration to validate.";
          choice config-source {
            mandatory true;
            leaf candidate {
              if-feature candidate;
              type empty;
            }
            leaf running {
              type empty;
            }
            leaf startup {
              if-feature startup;
              type empty;
            }
            leaf url {
              if-feature url;
              type inet:uri;
            }
            container config {
              ncx:root;
              ncx:metadata "string last-modified";
              ncx:metadata "string etag";
              description
                "Inline Config content: 'config' element.
                 Represents an entire 'stand-alone' 
                 configuration database, not a subset of 
                 the running database.";
            }  // container config
          }  // choice config-source
        }  // container source
      }
    }  // rpc validate

    rpc load-config {
      ncx:hidden;
      ncx:abstract;
      description
        "NCX internal load-config operation.
         The config database can be loaded dynamically
         only if the startup config phase was skipped
         via the 'no-startup' option.

         An operation-failed error will be returned and
         any startup config file was loaded (even partially)
         successfully.";
      input {
        container config {
          ncx:root;
          ncx:metadata "string last-modified";
          ncx:metadata "string etag";
          description "XML Config contents.";
        }  // container config
      }
    }  // rpc load-config

    container config {
      ncx:root;
      ncx:abstract;
      ncx:metadata "string last-modified";
      ncx:metadata "string etag";
      description
        "Used as the container for NETCONF object definitions.";
    }  // container config
  }  // module yuma-netconf