module openconfig-extensions {
    yang-version "1";
    namespace "http://openconfig.net/yang/openconfig-ext";
    prefix "oc-ext";

    organization "OpenConfig working group";

    contact
        "OpenConfig working group
        www.openconfig.net";

    description
        "This module provides extensions to the YANG language to allow
        OpenConfig specific functionality and meta-data to be defined.";

    revision "2017-01-29" {
        description
            "Added extension for annotating encrypted values.";
        reference "TBD";
    }

    revision "2015-10-09" {
        description
            "Initial OpenConfig public release";
        reference "TBD";
    }

    revision "2015-10-05" {
        description
            "Initial revision";
        reference "TBD";
    }

    oc-ext:openconfig-version "0.0.1";

    extension openconfig-version {
        argument "semver" {
            yin-element false;
        }
        description
            "The OpenConfig version number for the module. This is
            expressed as a semantic version number of the form:
              x.y.z
            where:
              * x corresponds to the major version,
              * y corresponds to a minor version,
              * z corresponds to a patch version.
            This version corresponds to the model file within which it is
            defined, and does not cover the whole set of OpenConfig models.
            Where several modules are used to build up a single block of
            functionality, the same module version is specified across each
            file that makes up the module.

            A major version number of 0 indicates that this model is still
            in development (whether within OpenConfig or with industry
            partners), and is potentially subject to change.

            Following a release of major version 1, all modules will
            increment major revision number where backwards incompatible
            changes to the model are made.

            The minor version is changed when features are added to the
            model that do not impact current clients use of the model.

            The patch-level version is incremented when non-feature changes
            (such as bugfixes or clarifications to human-readable
            descriptions that do not impact model functionality) are made
            that maintain backwards compatibility.

            The version number is stored in the module meta-data.";
    }

    extension openconfig-encrypted-value {
        description
            "This extension provides an annotation on schema nodes to
            indicate that the corresponding value should be stored and
            reported in encrypted form.
            Clients reading the configuration or applied configuration
            for the node should expect to receive only the encrypted value.
            This annotation may be used on nodes such as secure passwords
            in which the device never reports a cleartext value, even
            if the input is provided as cleartext.";
    }
}