From aa96694c19259de21c0db8ac6f379bfe57ff146c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jan=20Kundr=C3=A1t?= Date: Fri, 28 Jun 2019 14:33:16 +0200 Subject: [PATCH] YANG: import: IETF models for network topologies These will be used by our own topology. I've obtained them from YangModels/yang@5b7ffd4e. Change-Id: I90c8e3566293f4e747865a9739a0e5ce0cafea42 --- .../ext/ietf-network-topology@2018-02-26.yang | 294 ++++++++++++++++++ gnpy/yang/ext/ietf-network@2018-02-26.yang | 192 ++++++++++++ 2 files changed, 486 insertions(+) create mode 100644 gnpy/yang/ext/ietf-network-topology@2018-02-26.yang create mode 100644 gnpy/yang/ext/ietf-network@2018-02-26.yang diff --git a/gnpy/yang/ext/ietf-network-topology@2018-02-26.yang b/gnpy/yang/ext/ietf-network-topology@2018-02-26.yang new file mode 100644 index 00000000..1ec944d7 --- /dev/null +++ b/gnpy/yang/ext/ietf-network-topology@2018-02-26.yang @@ -0,0 +1,294 @@ +module ietf-network-topology { + yang-version 1.1; + namespace "urn:ietf:params:xml:ns:yang:ietf-network-topology"; + prefix nt; + + import ietf-inet-types { + prefix inet; + reference + "RFC 6991: Common YANG Data Types"; + } + import ietf-network { + prefix nw; + reference + "RFC 8345: A YANG Data Model for Network Topologies"; + } + + organization + "IETF I2RS (Interface to the Routing System) Working Group"; + + contact + "WG Web: + WG List: + + Editor: Alexander Clemm + + + Editor: Jan Medved + + + Editor: Robert Varga + + + Editor: Nitin Bahadur + + + Editor: Hariharan Ananthakrishnan + + + Editor: Xufeng Liu + "; + + description + "This module defines a common base model for a network topology, + augmenting the base network data model with links to connect + nodes, as well as termination points to terminate links + on nodes. + + Copyright (c) 2018 IETF Trust 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 Simplified BSD License + set forth in Section 4.c of the IETF Trust's Legal Provisions + Relating to IETF Documents + (https://trustee.ietf.org/license-info). + + This version of this YANG module is part of RFC 8345; + see the RFC itself for full legal notices."; + + revision 2018-02-26 { + description + "Initial revision."; + reference + "RFC 8345: A YANG Data Model for Network Topologies"; + } + + typedef link-id { + type inet:uri; + description + "An identifier for a link in a topology. The precise + structure of the link-id will be up to the implementation. + The identifier SHOULD be chosen such that the same link in a + real network topology will always be identified through the + same identifier, even if the data model is instantiated in + separate datastores. An implementation MAY choose to capture + semantics in the identifier -- for example, to indicate the + type of link and/or the type of topology of which the link is + a part."; + } + + typedef tp-id { + type inet:uri; + description + "An identifier for termination points on a node. The precise + structure of the tp-id will be up to the implementation. + The identifier SHOULD be chosen such that the same termination + point in a real network topology will always be identified + through the same identifier, even if the data model is + instantiated in separate datastores. An implementation MAY + choose to capture semantics in the identifier -- for example, + to indicate the type of termination point and/or the type of + node that contains the termination point."; + } + + grouping link-ref { + description + "This grouping can be used to reference a link in a specific + network. Although it is not used in this module, it is + defined here for the convenience of augmenting modules."; + leaf link-ref { + type leafref { + path "/nw:networks/nw:network[nw:network-id=current()/../"+ + "network-ref]/nt:link/nt:link-id"; + require-instance false; + } + description + "A type for an absolute reference to a link instance. + (This type should not be used for relative references. + In such a case, a relative path should be used instead.)"; + } + uses nw:network-ref; + } + + grouping tp-ref { + description + "This grouping can be used to reference a termination point + in a specific node. Although it is not used in this module, + it is defined here for the convenience of augmenting + modules."; + leaf tp-ref { + type leafref { + path "/nw:networks/nw:network[nw:network-id=current()/../"+ + "network-ref]/nw:node[nw:node-id=current()/../"+ + "node-ref]/nt:termination-point/nt:tp-id"; + require-instance false; + } + description + "A type for an absolute reference to a termination point. + (This type should not be used for relative references. + In such a case, a relative path should be used instead.)"; + } + uses nw:node-ref; + } + + augment "/nw:networks/nw:network" { + description + "Add links to the network data model."; + list link { + key "link-id"; + description + "A network link connects a local (source) node and + a remote (destination) node via a set of the respective + node's termination points. It is possible to have several + links between the same source and destination nodes. + Likewise, a link could potentially be re-homed between + termination points. Therefore, in order to ensure that we + would always know to distinguish between links, every link + is identified by a dedicated link identifier. Note that a + link models a point-to-point link, not a multipoint link."; + leaf link-id { + type link-id; + description + "The identifier of a link in the topology. + A link is specific to a topology to which it belongs."; + } + container source { + description + "This container holds the logical source of a particular + link."; + leaf source-node { + type leafref { + path "../../../nw:node/nw:node-id"; + require-instance false; + } + description + "Source node identifier. Must be in the same topology."; + } + leaf source-tp { + type leafref { + path "../../../nw:node[nw:node-id=current()/../"+ + "source-node]/termination-point/tp-id"; + require-instance false; + } + description + "This termination point is located within the source node + and terminates the link."; + } + } + + container destination { + description + "This container holds the logical destination of a + particular link."; + leaf dest-node { + type leafref { + path "../../../nw:node/nw:node-id"; + require-instance false; + } + description + "Destination node identifier. Must be in the same + network."; + } + leaf dest-tp { + type leafref { + path "../../../nw:node[nw:node-id=current()/../"+ + "dest-node]/termination-point/tp-id"; + require-instance false; + } + description + "This termination point is located within the + destination node and terminates the link."; + } + } + list supporting-link { + key "network-ref link-ref"; + description + "Identifies the link or links on which this link depends."; + leaf network-ref { + type leafref { + path "../../../nw:supporting-network/nw:network-ref"; + require-instance false; + } + description + "This leaf identifies in which underlay topology + the supporting link is present."; + } + + leaf link-ref { + type leafref { + path "/nw:networks/nw:network[nw:network-id=current()/"+ + "../network-ref]/link/link-id"; + require-instance false; + } + description + "This leaf identifies a link that is a part + of this link's underlay. Reference loops in which + a link identifies itself as its underlay, either + directly or transitively, are not allowed."; + } + } + } + } + augment "/nw:networks/nw:network/nw:node" { + description + "Augments termination points that terminate links. + Termination points can ultimately be mapped to interfaces."; + list termination-point { + key "tp-id"; + description + "A termination point can terminate a link. + Depending on the type of topology, a termination point + could, for example, refer to a port or an interface."; + leaf tp-id { + type tp-id; + description + "Termination point identifier."; + } + list supporting-termination-point { + key "network-ref node-ref tp-ref"; + description + "This list identifies any termination points on which a + given termination point depends or onto which it maps. + Those termination points will themselves be contained + in a supporting node. This dependency information can be + inferred from the dependencies between links. Therefore, + this item is not separately configurable. Hence, no + corresponding constraint needs to be articulated. + The corresponding information is simply provided by the + implementing system."; + + leaf network-ref { + type leafref { + path "../../../nw:supporting-node/nw:network-ref"; + require-instance false; + } + description + "This leaf identifies in which topology the + supporting termination point is present."; + } + leaf node-ref { + type leafref { + path "../../../nw:supporting-node/nw:node-ref"; + require-instance false; + } + description + "This leaf identifies in which node the supporting + termination point is present."; + } + leaf tp-ref { + type leafref { + path "/nw:networks/nw:network[nw:network-id=current()/"+ + "../network-ref]/nw:node[nw:node-id=current()/../"+ + "node-ref]/termination-point/tp-id"; + require-instance false; + } + description + "Reference to the underlay node (the underlay node must + be in a different topology)."; + } + } + } + } +} diff --git a/gnpy/yang/ext/ietf-network@2018-02-26.yang b/gnpy/yang/ext/ietf-network@2018-02-26.yang new file mode 100644 index 00000000..6a03d7e4 --- /dev/null +++ b/gnpy/yang/ext/ietf-network@2018-02-26.yang @@ -0,0 +1,192 @@ +module ietf-network { + yang-version 1.1; + namespace "urn:ietf:params:xml:ns:yang:ietf-network"; + prefix nw; + + import ietf-inet-types { + prefix inet; + reference + "RFC 6991: Common YANG Data Types"; + } + + organization + "IETF I2RS (Interface to the Routing System) Working Group"; + + contact + "WG Web: + WG List: + + Editor: Alexander Clemm + + + Editor: Jan Medved + + + Editor: Robert Varga + + + Editor: Nitin Bahadur + + + Editor: Hariharan Ananthakrishnan + + + Editor: Xufeng Liu + "; + description + "This module defines a common base data model for a collection + of nodes in a network. Node definitions are further used + in network topologies and inventories. + + Copyright (c) 2018 IETF Trust 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 Simplified BSD License + set forth in Section 4.c of the IETF Trust's Legal Provisions + Relating to IETF Documents + (https://trustee.ietf.org/license-info). + + This version of this YANG module is part of RFC 8345; + see the RFC itself for full legal notices."; + + revision 2018-02-26 { + description + "Initial revision."; + reference + "RFC 8345: A YANG Data Model for Network Topologies"; + } + + typedef node-id { + type inet:uri; + description + "Identifier for a node. The precise structure of the node-id + will be up to the implementation. For example, some + implementations MAY pick a URI that includes the network-id + as part of the path. The identifier SHOULD be chosen + such that the same node in a real network topology will + always be identified through the same identifier, even if + the data model is instantiated in separate datastores. An + implementation MAY choose to capture semantics in the + identifier -- for example, to indicate the type of node."; + } + + typedef network-id { + type inet:uri; + description + "Identifier for a network. The precise structure of the + network-id will be up to the implementation. The identifier + SHOULD be chosen such that the same network will always be + identified through the same identifier, even if the data model + is instantiated in separate datastores. An implementation MAY + choose to capture semantics in the identifier -- for example, + to indicate the type of network."; + } + + grouping network-ref { + description + "Contains the information necessary to reference a network -- + for example, an underlay network."; + leaf network-ref { + type leafref { + path "/nw:networks/nw:network/nw:network-id"; + require-instance false; + } + description + "Used to reference a network -- for example, an underlay + network."; + } + } + + grouping node-ref { + description + "Contains the information necessary to reference a node."; + leaf node-ref { + type leafref { + path "/nw:networks/nw:network[nw:network-id=current()/../"+ + "network-ref]/nw:node/nw:node-id"; + require-instance false; + } + description + "Used to reference a node. + Nodes are identified relative to the network that + contains them."; + } + uses network-ref; + } + + container networks { + description + "Serves as a top-level container for a list of networks."; + list network { + key "network-id"; + description + "Describes a network. + A network typically contains an inventory of nodes, + topological information (augmented through the + network-topology data model), and layering information."; + leaf network-id { + type network-id; + description + "Identifies a network."; + } + container network-types { + description + "Serves as an augmentation target. + The network type is indicated through corresponding + presence containers augmented into this container."; + } + list supporting-network { + key "network-ref"; + description + "An underlay network, used to represent layered network + topologies."; + leaf network-ref { + type leafref { + path "/nw:networks/nw:network/nw:network-id"; + require-instance false; + } + description + "References the underlay network."; + } + } + + list node { + key "node-id"; + description + "The inventory of nodes of this network."; + leaf node-id { + type node-id; + description + "Uniquely identifies a node within the containing + network."; + } + list supporting-node { + key "network-ref node-ref"; + description + "Represents another node that is in an underlay network + and that supports this node. Used to represent layering + structure."; + leaf network-ref { + type leafref { + path "../../../nw:supporting-network/nw:network-ref"; + require-instance false; + } + description + "References the underlay network of which the + underlay node is a part."; + } + leaf node-ref { + type leafref { + path "/nw:networks/nw:network/nw:node/nw:node-id"; + require-instance false; + } + description + "References the underlay node itself."; + } + } + } + } + } +}