From 9fd9590aaa1a3256439a889bf7d2bee8149938ba Mon Sep 17 00:00:00 2001 From: Robert Varga Date: Wed, 13 Oct 2021 12:58:13 +0200 Subject: [PATCH] Add ietf-subscribed-notifications RFC8639 defines baseline structures for subscribed notifications. Make sure we package the corresponding model. JIRA: NETCONF-814 Change-Id: I103c8bb64f51f837c85956d3ac091ff74e19573f Signed-off-by: Robert Varga --- artifacts/pom.xml | 5 + .../ietf-subscribed-notifications/pom.xml | 42 + ...f-subscribed-notifications@2019-09-09.yang | 1350 +++++++++++++++++ restconf/restconf-models/pom.xml | 1 + 4 files changed, 1398 insertions(+) create mode 100644 restconf/restconf-models/ietf-subscribed-notifications/pom.xml create mode 100644 restconf/restconf-models/ietf-subscribed-notifications/src/main/yang/ietf-subscribed-notifications@2019-09-09.yang diff --git a/artifacts/pom.xml b/artifacts/pom.xml index 40735ecaa7..063baf2586 100644 --- a/artifacts/pom.xml +++ b/artifacts/pom.xml @@ -469,6 +469,11 @@ ietf-restconf-monitoring ${project.version} + + ${project.groupId} + ietf-subscribed-notifications + ${project.version} + ${project.groupId} restconf-common-models diff --git a/restconf/restconf-models/ietf-subscribed-notifications/pom.xml b/restconf/restconf-models/ietf-subscribed-notifications/pom.xml new file mode 100644 index 0000000000..0bfb2dc70b --- /dev/null +++ b/restconf/restconf-models/ietf-subscribed-notifications/pom.xml @@ -0,0 +1,42 @@ + + + + + 4.0.0 + + + org.opendaylight.netconf + netconf-parent + 4.0.0-SNAPSHOT + ../../../parent + + + ietf-subscribed-notifications + bundle + ${project.artifactId} + + + + org.opendaylight.mdsal.binding.model.ietf + rfc8040 + + + org.opendaylight.mdsal.binding.model.ietf + rfc8343 + + + org.opendaylight.mdsal.binding.model.ietf + rfc8529 + + + org.opendaylight.netconf + ietf-netconf-acm + + + diff --git a/restconf/restconf-models/ietf-subscribed-notifications/src/main/yang/ietf-subscribed-notifications@2019-09-09.yang b/restconf/restconf-models/ietf-subscribed-notifications/src/main/yang/ietf-subscribed-notifications@2019-09-09.yang new file mode 100644 index 0000000000..e04593c3f2 --- /dev/null +++ b/restconf/restconf-models/ietf-subscribed-notifications/src/main/yang/ietf-subscribed-notifications@2019-09-09.yang @@ -0,0 +1,1350 @@ +module ietf-subscribed-notifications { + yang-version 1.1; + namespace "urn:ietf:params:xml:ns:yang:ietf-subscribed-notifications"; + prefix sn; + + import ietf-inet-types { + prefix inet; + reference + "RFC 6991: Common YANG Data Types"; + } + import ietf-interfaces { + prefix if; + reference + "RFC 8343: A YANG Data Model for Interface Management"; + } + import ietf-netconf-acm { + prefix nacm; + reference + "RFC 8341: Network Configuration Access Control Model"; + } + import ietf-network-instance { + prefix ni; + reference + "RFC 8529: YANG Data Model for Network Instances"; + } + import ietf-restconf { + prefix rc; + reference + "RFC 8040: RESTCONF Protocol"; + } + import ietf-yang-types { + prefix yang; + reference + "RFC 6991: Common YANG Data Types"; + } + + organization + "IETF NETCONF (Network Configuration) Working Group"; + contact + "WG Web: + WG List: + + Author: Alexander Clemm + + + Author: Eric Voit + + + Author: Alberto Gonzalez Prieto + + + Author: Einar Nilsen-Nygaard + + + Author: Ambika Prasad Tripathy + "; + description + "This module defines a YANG data model for subscribing to event + records and receiving matching content in notification messages. + + The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL + NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED', + 'MAY', and 'OPTIONAL' in this document are to be interpreted as + described in BCP 14 (RFC 2119) (RFC 8174) when, and only when, + they appear in all capitals, as shown here. + + Copyright (c) 2019 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 8639; see the + RFC itself for full legal notices."; + + revision 2019-09-09 { + description + "Initial version."; + reference + "RFC 8639: A YANG Data Model for Subscriptions to + Event Notifications"; + } + + /* + * FEATURES + */ + + feature configured { + description + "This feature indicates that configuration of subscriptions is + supported."; + } + + feature dscp { + description + "This feature indicates that a publisher supports the ability + to set the Differentiated Services Code Point (DSCP) value in + outgoing packets."; + } + + feature encode-json { + description + "This feature indicates that JSON encoding of notification + messages is supported."; + } + + feature encode-xml { + description + "This feature indicates that XML encoding of notification + messages is supported."; + } + + feature interface-designation { + description + "This feature indicates that a publisher supports sourcing all + receiver interactions for a configured subscription from a + single designated egress interface."; + } + + feature qos { + description + "This feature indicates that a publisher supports absolute + dependencies of one subscription's traffic over another + as well as weighted bandwidth sharing between subscriptions. + Both of these are Quality of Service (QoS) features that allow + differentiated treatment of notification messages between a + publisher and a specific receiver."; + } + + feature replay { + description + "This feature indicates that historical event record replay is + supported. With replay, it is possible for past event records + to be streamed in chronological order."; + } + + feature subtree { + description + "This feature indicates support for YANG subtree filtering."; + reference + "RFC 6241: Network Configuration Protocol (NETCONF), + Section 6"; + } + + feature supports-vrf { + description + "This feature indicates that a publisher supports VRF + configuration for configured subscriptions. VRF support for + dynamic subscriptions does not require this feature."; + reference + "RFC 8529: YANG Data Model for Network Instances, + Section 6"; + } + + feature xpath { + description + "This feature indicates support for XPath filtering."; + reference + "XML Path Language (XPath) Version 1.0 + (https://www.w3.org/TR/1999/REC-xpath-19991116)"; + } + + /* + * EXTENSIONS + */ + + extension subscription-state-notification { + description + "This statement applies only to notifications. It indicates + that the notification is a subscription state change + notification. Therefore, it does not participate in a regular + event stream and does not need to be specifically subscribed + to in order to be received. This statement can only occur as + a substatement of the YANG 'notification' statement. This + statement is not for use outside of this YANG module."; + } + + /* + * IDENTITIES + */ + /* Identities for RPC and notification errors */ + + identity delete-subscription-error { + description + "Base identity for the problem found while attempting to + fulfill either a 'delete-subscription' RPC request or a + 'kill-subscription' RPC request."; + } + + identity establish-subscription-error { + description + "Base identity for the problem found while attempting to + fulfill an 'establish-subscription' RPC request."; + } + + identity modify-subscription-error { + description + "Base identity for the problem found while attempting to + fulfill a 'modify-subscription' RPC request."; + } + + identity subscription-suspended-reason { + description + "Base identity for the problem condition communicated to a + receiver as part of a 'subscription-suspended' + notification."; + } + + identity subscription-terminated-reason { + description + "Base identity for the problem condition communicated to a + receiver as part of a 'subscription-terminated' + notification."; + } + + identity dscp-unavailable { + base establish-subscription-error; + if-feature "dscp"; + description + "The publisher is unable to mark notification messages with + prioritization information in a way that will be respected + during network transit."; + } + + identity encoding-unsupported { + base establish-subscription-error; + description + "Unable to encode notification messages in the desired + format."; + } + + identity filter-unavailable { + base subscription-terminated-reason; + description + "Referenced filter does not exist. This means a receiver is + referencing a filter that doesn't exist or to which it + does not have access permissions."; + } + + identity filter-unsupported { + base establish-subscription-error; + base modify-subscription-error; + description + "Cannot parse syntax in the filter. This failure can be from + a syntax error or a syntax too complex to be processed by the + publisher."; + } + + identity insufficient-resources { + base establish-subscription-error; + base modify-subscription-error; + base subscription-suspended-reason; + description + "The publisher does not have sufficient resources to support + the requested subscription. An example might be that + allocated CPU is too limited to generate the desired set of + notification messages."; + } + + identity no-such-subscription { + base modify-subscription-error; + base delete-subscription-error; + base subscription-terminated-reason; + description + "Referenced subscription doesn't exist. This may be as a + result of a nonexistent subscription ID, an ID that belongs to + another subscriber, or an ID for a configured subscription."; + } + + identity replay-unsupported { + base establish-subscription-error; + if-feature "replay"; + description + "Replay cannot be performed for this subscription. This means + the publisher will not provide the requested historic + information from the event stream via replay to this + receiver."; + } + + identity stream-unavailable { + base subscription-terminated-reason; + description + "Not a subscribable event stream. This means the referenced + event stream is not available for subscription by the + receiver."; + } + + identity suspension-timeout { + base subscription-terminated-reason; + description + "Termination of a previously suspended subscription. The + publisher has eliminated the subscription, as it exceeded a + time limit for suspension."; + } + + identity unsupportable-volume { + base subscription-suspended-reason; + description + "The publisher does not have the network bandwidth needed to + get the volume of generated information intended for a + receiver."; + } + + /* Identities for encodings */ + + identity configurable-encoding { + description + "If a transport identity derives from this identity, it means + that it supports configurable encodings. An example of a + configurable encoding might be a new identity such as + 'encode-cbor'. Such an identity could use + 'configurable-encoding' as its base. This would allow a + dynamic subscription encoded in JSON (RFC 8259) to request + that notification messages be encoded via the Concise Binary + Object Representation (CBOR) (RFC 7049). Further details for + any specific configurable encoding would be explored in a + transport document based on this specification."; + reference + "RFC 8259: The JavaScript Object Notation (JSON) Data + Interchange Format + RFC 7049: Concise Binary Object Representation (CBOR)"; + } + + identity encoding { + description + "Base identity to represent data encodings."; + } + + identity encode-xml { + base encoding; + if-feature "encode-xml"; + description + "Encode data using XML as described in RFC 7950."; + reference + "RFC 7950: The YANG 1.1 Data Modeling Language"; + } + + identity encode-json { + base encoding; + if-feature "encode-json"; + description + "Encode data using JSON as described in RFC 7951."; + reference + "RFC 7951: JSON Encoding of Data Modeled with YANG"; + } + + /* Identities for transports */ + + identity transport { + description + "An identity that represents the underlying mechanism for + passing notification messages."; + } + + /* + * TYPEDEFs + */ + + typedef encoding { + type identityref { + base encoding; + } + description + "Specifies a data encoding, e.g., for a data subscription."; + } + + typedef stream-filter-ref { + type leafref { + path "/sn:filters/sn:stream-filter/sn:name"; + } + description + "This type is used to reference an event stream filter."; + } + + typedef stream-ref { + type leafref { + path "/sn:streams/sn:stream/sn:name"; + } + description + "This type is used to reference a system-provided + event stream."; + } + + typedef subscription-id { + type uint32; + description + "A type for subscription identifiers."; + } + + typedef transport { + type identityref { + base transport; + } + description + "Specifies the transport used to send notification messages + to a receiver."; + } + + /* + * GROUPINGS + */ + + grouping stream-filter-elements { + description + "This grouping defines the base for filters applied to event + streams."; + choice filter-spec { + description + "The content filter specification for this request."; + anydata stream-subtree-filter { + if-feature "subtree"; + description + "Event stream evaluation criteria encoded in the syntax of + a subtree filter as defined in RFC 6241, Section 6. + + The subtree filter is applied to the representation of + individual, delineated event records as contained in the + event stream. + + If the subtree filter returns a non-empty node set, the + filter matches the event record, and the event record is + included in the notification message sent to the + receivers."; + reference + "RFC 6241: Network Configuration Protocol (NETCONF), + Section 6"; + } + leaf stream-xpath-filter { + if-feature "xpath"; + type yang:xpath1.0; + description + "Event stream evaluation criteria encoded in the syntax of + an XPath 1.0 expression. + + The XPath expression is evaluated on the representation of + individual, delineated event records as contained in + the event stream. + + The result of the XPath expression is converted to a + boolean value using the standard XPath 1.0 rules. If the + boolean value is 'true', the filter matches the event + record, and the event record is included in the + notification message sent to the receivers. + + The expression is evaluated in the following XPath + context: + + o The set of namespace declarations is the set of + prefix and namespace pairs for all YANG modules + implemented by the server, where the prefix is the + YANG module name and the namespace is as defined by + the 'namespace' statement in the YANG module. + + If the leaf is encoded in XML, all namespace + declarations in scope on the 'stream-xpath-filter' + leaf element are added to the set of namespace + declarations. If a prefix found in the XML is + already present in the set of namespace + declarations, the namespace in the XML is used. + + o The set of variable bindings is empty. + + o The function library is comprised of the core + function library and the XPath functions defined in + Section 10 in RFC 7950. + + o The context node is the root node."; + reference + "XML Path Language (XPath) Version 1.0 + (https://www.w3.org/TR/1999/REC-xpath-19991116) + RFC 7950: The YANG 1.1 Data Modeling Language, + Section 10"; + } + } + } + + grouping update-qos { + description + "This grouping describes QoS information concerning a + subscription. This information is passed to lower layers + for transport prioritization and treatment."; + leaf dscp { + if-feature "dscp"; + type inet:dscp; + default "0"; + description + "The desired network transport priority level. This is the + priority set on notification messages encapsulating the + results of the subscription. This transport priority is + shared for all receivers of a given subscription."; + } + leaf weighting { + if-feature "qos"; + type uint8 { + range "0 .. 255"; + } + description + "Relative weighting for a subscription. Larger weights get + more resources. Allows an underlying transport layer to + perform informed load-balance allocations between various + subscriptions."; + reference + "RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2), + Section 5.3.2"; + } + leaf dependency { + if-feature "qos"; + type subscription-id; + description + "Provides the 'subscription-id' of a parent subscription. + The parent subscription has absolute precedence should + that parent have push updates ready to egress the publisher. + In other words, there should be no streaming of objects from + the current subscription if the parent has something ready + to push. + + If a dependency is asserted via configuration or via an RPC + but the referenced 'subscription-id' does not exist, the + dependency is silently discarded. If a referenced + subscription is deleted, this dependency is removed."; + reference + "RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2), + Section 5.3.1"; + } + } + + grouping subscription-policy-modifiable { + description + "This grouping describes all objects that may be changed + in a subscription."; + choice target { + mandatory true; + description + "Identifies the source of information against which a + subscription is being applied as well as specifics on the + subset of information desired from that source."; + case stream { + choice stream-filter { + description + "An event stream filter can be applied to a subscription. + That filter will either come referenced from a global + list or be provided in the subscription itself."; + case by-reference { + description + "Apply a filter that has been configured separately."; + leaf stream-filter-name { + type stream-filter-ref; + mandatory true; + description + "References an existing event stream filter that is + to be applied to an event stream for the + subscription."; + } + } + case within-subscription { + description + "A local definition allows a filter to have the same + lifecycle as the subscription."; + uses stream-filter-elements; + } + } + } + } + leaf stop-time { + type yang:date-and-time; + description + "Identifies a time after which notification messages for a + subscription should not be sent. If 'stop-time' is not + present, the notification messages will continue until the + subscription is terminated. If 'replay-start-time' exists, + 'stop-time' must be for a subsequent time. If + 'replay-start-time' doesn't exist, 'stop-time', when + established, must be for a future time."; + } + } + + grouping subscription-policy-dynamic { + description + "This grouping describes the only information concerning a + subscription that can be passed over the RPCs defined in this + data model."; + uses subscription-policy-modifiable { + augment "target/stream" { + description + "Adds additional objects that can be modified by an RPC."; + leaf stream { + type stream-ref { + require-instance false; + } + mandatory true; + description + "Indicates the event stream to be considered for + this subscription."; + } + leaf replay-start-time { + if-feature "replay"; + type yang:date-and-time; + config false; + description + "Used to trigger the 'replay' feature for a dynamic + subscription, where event records that are selected + need to be at or after the specified starting time. If + 'replay-start-time' is not present, this is not a replay + subscription and event record push should start + immediately. It is never valid to specify start times + that are later than or equal to the current time."; + } + } + } + uses update-qos; + } + + grouping subscription-policy { + description + "This grouping describes the full set of policy information + concerning both dynamic and configured subscriptions, with the + exclusion of both receivers and networking information + specific to the publisher, such as what interface should be + used to transmit notification messages."; + uses subscription-policy-dynamic; + leaf transport { + if-feature "configured"; + type transport; + description + "For a configured subscription, this leaf specifies the + transport used to deliver messages destined for all + receivers of that subscription."; + } + leaf encoding { + when 'not(../transport) or derived-from(../transport, + "sn:configurable-encoding")'; + type encoding; + description + "The type of encoding for notification messages. For a + dynamic subscription, if not included as part of an + 'establish-subscription' RPC, the encoding will be populated + with the encoding used by that RPC. For a configured + subscription, if not explicitly configured, the encoding + will be the default encoding for an underlying transport."; + } + leaf purpose { + if-feature "configured"; + type string; + description + "Open text allowing a configuring entity to embed the + originator or other specifics of this subscription."; + } + } + + /* + * RPCs + */ + + rpc establish-subscription { + description + "This RPC allows a subscriber to create (and possibly + negotiate) a subscription on its own behalf. If successful, + the subscription remains in effect for the duration of the + subscriber's association with the publisher or until the + subscription is terminated. If an error occurs or the + publisher cannot meet the terms of a subscription, an RPC + error is returned, and the subscription is not created. + In that case, the RPC reply's 'error-info' MAY include + suggested parameter settings that would have a higher + likelihood of succeeding in a subsequent + 'establish-subscription' request."; + input { + uses subscription-policy-dynamic; + leaf encoding { + type encoding; + description + "The type of encoding for the subscribed data. If not + included as part of the RPC, the encoding MUST be set by + the publisher to be the encoding used by this RPC."; + } + } + output { + leaf id { + type subscription-id; + mandatory true; + description + "Identifier used for this subscription."; + } + leaf replay-start-time-revision { + if-feature "replay"; + type yang:date-and-time; + description + "If a replay has been requested, this object represents + the earliest time covered by the event buffer for the + requested event stream. The value of this object is the + 'replay-log-aged-time' if it exists. Otherwise, it is + the 'replay-log-creation-time'. All buffered event + records after this time will be replayed to a receiver. + This object will only be sent if the starting time has + been revised to be later than the time requested by the + subscriber."; + } + } + } + + rc:yang-data establish-subscription-stream-error-info { + container establish-subscription-stream-error-info { + description + "If any 'establish-subscription' RPC parameters are + unsupportable against the event stream, a subscription + is not created and the RPC error response MUST indicate the + reason why the subscription failed to be created. This + yang-data MAY be inserted as structured data in a + subscription's RPC error response to indicate the reason for + the failure. This yang-data MUST be inserted if hints are + to be provided back to the subscriber."; + leaf reason { + type identityref { + base establish-subscription-error; + } + description + "Indicates the reason why the subscription has failed to + be created to a targeted event stream."; + } + leaf filter-failure-hint { + type string; + description + "Information describing where and/or why a provided + filter was unsupportable for a subscription. The + syntax and semantics of this hint are + implementation specific."; + } + } + } + + rpc modify-subscription { + description + "This RPC allows a subscriber to modify a dynamic + subscription's parameters. If successful, the changed + subscription parameters remain in effect for the duration of + the subscription, until the subscription is again modified, or + until the subscription is terminated. In the case of an error + or an inability to meet the modified parameters, the + subscription is not modified and the original subscription + parameters remain in effect. In that case, the RPC error MAY + include 'error-info' suggested parameter hints that would have + a high likelihood of succeeding in a subsequent + 'modify-subscription' request. A successful + 'modify-subscription' will return a suspended subscription to + the 'active' state."; + input { + leaf id { + type subscription-id; + mandatory true; + description + "Identifier to use for this subscription."; + } + uses subscription-policy-modifiable; + } + } + + rc:yang-data modify-subscription-stream-error-info { + container modify-subscription-stream-error-info { + description + "This yang-data MAY be provided as part of a subscription's + RPC error response when there is a failure of a + 'modify-subscription' RPC that has been made against an + event stream. This yang-data MUST be used if hints are to + be provided back to the subscriber."; + leaf reason { + type identityref { + base modify-subscription-error; + } + description + "Information in a 'modify-subscription' RPC error response + that indicates the reason why the subscription to an event + stream has failed to be modified."; + } + leaf filter-failure-hint { + type string; + description + "Information describing where and/or why a provided + filter was unsupportable for a subscription. The syntax + and semantics of this hint are + implementation specific."; + } + } + } + + rpc delete-subscription { + description + "This RPC allows a subscriber to delete a subscription that + was previously created by that same subscriber using the + 'establish-subscription' RPC. + + If an error occurs, the server replies with an 'rpc-error' + where the 'error-info' field MAY contain a + 'delete-subscription-error-info' structure."; + input { + leaf id { + type subscription-id; + mandatory true; + description + "Identifier of the subscription that is to be deleted. + Only subscriptions that were created using + 'establish-subscription' from the same origin as this RPC + can be deleted via this RPC."; + } + } + } + + rpc kill-subscription { + nacm:default-deny-all; + description + "This RPC allows an operator to delete a dynamic subscription + without restrictions on the originating subscriber or + underlying transport session. + + If an error occurs, the server replies with an 'rpc-error' + where the 'error-info' field MAY contain a + 'delete-subscription-error-info' structure."; + input { + leaf id { + type subscription-id; + mandatory true; + description + "Identifier of the subscription that is to be deleted. + Only subscriptions that were created using + 'establish-subscription' can be deleted via this RPC."; + } + } + } + + rc:yang-data delete-subscription-error-info { + container delete-subscription-error-info { + description + "If a 'delete-subscription' RPC or a 'kill-subscription' RPC + fails, the subscription is not deleted and the RPC error + response MUST indicate the reason for this failure. This + yang-data MAY be inserted as structured data in a + subscription's RPC error response to indicate the reason + for the failure."; + leaf reason { + type identityref { + base delete-subscription-error; + } + mandatory true; + description + "Indicates the reason why the subscription has failed to be + deleted."; + } + } + } + + /* + * NOTIFICATIONS + */ + + notification replay-completed { + sn:subscription-state-notification; + if-feature "replay"; + description + "This notification is sent to indicate that all of the replay + notifications have been sent."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the affected subscription."; + } + } + + notification subscription-completed { + sn:subscription-state-notification; + if-feature "configured"; + description + "This notification is sent to indicate that a subscription has + finished passing event records, as the 'stop-time' has been + reached."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the gracefully completed subscription."; + } + } + + notification subscription-modified { + sn:subscription-state-notification; + description + "This notification indicates that a subscription has been + modified. Notification messages sent from this point on will + conform to the modified terms of the subscription. For + completeness, this subscription state change notification + includes both modified and unmodified aspects of a + subscription."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the affected subscription."; + } + uses subscription-policy { + refine "target/stream/stream-filter/within-subscription" { + description + "Filter applied to the subscription. If the + 'stream-filter-name' is populated, the filter in the + subscription came from the 'filters' container. + Otherwise, it is populated in-line as part of the + subscription."; + } + } + } + + notification subscription-resumed { + sn:subscription-state-notification; + description + "This notification indicates that a subscription that had + previously been suspended has resumed. Notifications will + once again be sent. In addition, a 'subscription-resumed' + indicates that no modification of parameters has occurred + since the last time event records have been sent."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the affected subscription."; + } + } + + notification subscription-started { + sn:subscription-state-notification; + if-feature "configured"; + description + "This notification indicates that a subscription has started + and notifications will now be sent."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the affected subscription."; + } + uses subscription-policy { + refine "target/stream/replay-start-time" { + description + "Indicates the time that a replay is using for the + streaming of buffered event records. This will be + populated with the most recent of the following: + the event time of the previous event record sent to a + receiver, the 'replay-log-creation-time', the + 'replay-log-aged-time', or the most recent publisher + boot time."; + } + refine "target/stream/stream-filter/within-subscription" { + description + "Filter applied to the subscription. If the + 'stream-filter-name' is populated, the filter in the + subscription came from the 'filters' container. + Otherwise, it is populated in-line as part of the + subscription."; + } + augment "target/stream" { + description + "This augmentation adds additional parameters specific to a + 'subscription-started' notification."; + leaf replay-previous-event-time { + when '../replay-start-time'; + if-feature "replay"; + type yang:date-and-time; + description + "If there is at least one event in the replay buffer + prior to 'replay-start-time', this gives the time of + the event generated immediately prior to the + 'replay-start-time'. + + If a receiver previously received event records for + this configured subscription, it can compare this time + to the last event record previously received. If the + two are not the same (perhaps due to a reboot), then a + dynamic replay can be initiated to acquire any missing + event records."; + } + } + } + } + + notification subscription-suspended { + sn:subscription-state-notification; + description + "This notification indicates that a suspension of the + subscription by the publisher has occurred. No further + notifications will be sent until the subscription resumes. + This notification shall only be sent to receivers of a + subscription; it does not constitute a general-purpose + notification."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the affected subscription."; + } + leaf reason { + type identityref { + base subscription-suspended-reason; + } + mandatory true; + description + "Identifies the condition that resulted in the suspension."; + } + } + + notification subscription-terminated { + sn:subscription-state-notification; + description + "This notification indicates that a subscription has been + terminated."; + leaf id { + type subscription-id; + mandatory true; + description + "This references the affected subscription."; + } + leaf reason { + type identityref { + base subscription-terminated-reason; + } + mandatory true; + description + "Identifies the condition that resulted in the termination."; + } + } + + /* + * DATA NODES + */ + + container streams { + config false; + description + "Contains information on the built-in event streams provided by + the publisher."; + list stream { + key "name"; + description + "Identifies the built-in event streams that are supported by + the publisher."; + leaf name { + type string; + description + "A handle for a system-provided event stream made up of a + sequential set of event records, each of which is + characterized by its own domain and semantics."; + } + leaf description { + type string; + description + "A description of the event stream, including such + information as the type of event records that are + available in this event stream."; + } + leaf replay-support { + if-feature "replay"; + type empty; + description + "Indicates that event record replay is available on this + event stream."; + } + leaf replay-log-creation-time { + when '../replay-support'; + if-feature "replay"; + type yang:date-and-time; + mandatory true; + description + "The timestamp of the creation of the log used to support + the replay function on this event stream. This time + might be earlier than the earliest available information + contained in the log. This object is updated if the log + resets for some reason."; + } + leaf replay-log-aged-time { + when '../replay-support'; + if-feature "replay"; + type yang:date-and-time; + description + "The timestamp associated with the last event record that + has been aged out of the log. This timestamp identifies + how far back in history this replay log extends, if it + doesn't extend back to the 'replay-log-creation-time'. + This object MUST be present if replay is supported and any + event records have been aged out of the log."; + } + } + } + container filters { + description + "Contains a list of configurable filters that can be applied to + subscriptions. This facilitates the reuse of complex filters + once defined."; + list stream-filter { + key "name"; + description + "A list of preconfigured filters that can be applied to + subscriptions."; + leaf name { + type string; + description + "A name to differentiate between filters."; + } + uses stream-filter-elements; + } + } + container subscriptions { + description + "Contains the list of currently active subscriptions, i.e., + subscriptions that are currently in effect, used for + subscription management and monitoring purposes. This + includes subscriptions that have been set up via + RPC primitives as well as subscriptions that have been + established via configuration."; + list subscription { + key "id"; + description + "The identity and specific parameters of a subscription. + Subscriptions in this list can be created using a control + channel or RPC or can be established through configuration. + + If the 'kill-subscription' RPC or configuration operations + are used to delete a subscription, a + 'subscription-terminated' message is sent to any active or + suspended receivers."; + leaf id { + type subscription-id; + description + "Identifier of a subscription; unique in a given + publisher."; + } + uses subscription-policy { + refine "target/stream/stream" { + description + "Indicates the event stream to be considered for this + subscription. If an event stream has been removed + and can no longer be referenced by an active + subscription, send a 'subscription-terminated' + notification with 'stream-unavailable' as the reason. + If a configured subscription refers to a nonexistent + event stream, move that subscription to the + 'invalid' state."; + } + refine "transport" { + description + "For a configured subscription, this leaf specifies the + transport used to deliver messages destined for all + receivers of that subscription. This object is + mandatory for subscriptions in the configuration + datastore. This object (1) is not mandatory for dynamic + subscriptions in the operational state datastore and + (2) should not be present for other types of dynamic + subscriptions."; + } + augment "target/stream" { + description + "Enables objects to be added to a configured stream + subscription."; + leaf configured-replay { + if-feature "configured"; + if-feature "replay"; + type empty; + description + "The presence of this leaf indicates that replay for + the configured subscription should start at the + earliest time in the event log or at the publisher + boot time, whichever is later."; + } + } + } + choice notification-message-origin { + if-feature "configured"; + description + "Identifies the egress interface on the publisher + from which notification messages are to be sent."; + case interface-originated { + description + "When notification messages are to egress a specific, + designated interface on the publisher."; + leaf source-interface { + if-feature "interface-designation"; + type if:interface-ref; + description + "References the interface for notification messages."; + } + } + case address-originated { + description + "When notification messages are to depart from a + publisher using a specific originating address and/or + routing context information."; + leaf source-vrf { + if-feature "supports-vrf"; + type leafref { + path "/ni:network-instances/ni:network-instance/ni:name"; + } + description + "VRF from which notification messages should egress a + publisher."; + } + leaf source-address { + type inet:ip-address-no-zone; + description + "The source address for the notification messages. + If a source VRF exists but this object doesn't, a + publisher's default address for that VRF must + be used."; + } + } + } + leaf configured-subscription-state { + if-feature "configured"; + type enumeration { + enum valid { + value 1; + description + "The subscription is supportable with its current + parameters."; + } + enum invalid { + value 2; + description + "The subscription as a whole is unsupportable with its + current parameters."; + } + enum concluded { + value 3; + description + "A subscription is inactive, as it has hit a + stop time. It no longer has receivers in the + 'active' or 'suspended' state, but the subscription + has not yet been removed from configuration."; + } + } + config false; + description + "The presence of this leaf indicates that the subscription + originated from configuration, not through a control + channel or RPC. The value indicates the state of the + subscription as established by the publisher."; + } + container receivers { + description + "Set of receivers in a subscription."; + list receiver { + key "name"; + min-elements 1; + description + "A host intended as a recipient for the notification + messages of a subscription. For configured + subscriptions, transport-specific network parameters + (or a leafref to those parameters) may be augmented to a + specific receiver in this list."; + leaf name { + type string; + description + "Identifies a unique receiver for a subscription."; + } + leaf sent-event-records { + type yang:zero-based-counter64; + config false; + description + "The number of event records sent to the receiver. The + count is initialized when a dynamic subscription is + established or when a configured receiver + transitions to the 'valid' state."; + } + leaf excluded-event-records { + type yang:zero-based-counter64; + config false; + description + "The number of event records explicitly removed via + either an event stream filter or an access control + filter so that they are not passed to a receiver. + This count is set to zero each time + 'sent-event-records' is initialized."; + } + leaf state { + type enumeration { + enum active { + value 1; + description + "The receiver is currently being sent any + applicable notification messages for the + subscription."; + } + enum suspended { + value 2; + description + "The receiver state is 'suspended', so the + publisher is currently unable to provide + notification messages for the subscription."; + } + enum connecting { + value 3; + if-feature "configured"; + description + "A subscription has been configured, but a + 'subscription-started' subscription state change + notification needs to be successfully received + before notification messages are sent. + + If the 'reset' action is invoked for a receiver of + an active configured subscription, the state + must be moved to 'connecting'."; + } + enum disconnected { + value 4; + if-feature "configured"; + description + "A subscription has failed to send a + 'subscription-started' state change to the + receiver. Additional connection attempts are not + currently being made."; + } + } + config false; + mandatory true; + description + "Specifies the state of a subscription from the + perspective of a particular receiver. With this + information, it is possible to determine whether a + publisher is currently generating notification + messages intended for that receiver."; + } + action reset { + if-feature "configured"; + description + "Allows the reset of this configured subscription's + receiver to the 'connecting' state. This enables the + connection process to be reinitiated."; + output { + leaf time { + type yang:date-and-time; + mandatory true; + description + "Time at which a publisher returned the receiver to + the 'connecting' state."; + } + } + } + } + } + } + } +} diff --git a/restconf/restconf-models/pom.xml b/restconf/restconf-models/pom.xml index 899c5f2c2b..1693896615 100644 --- a/restconf/restconf-models/pom.xml +++ b/restconf/restconf-models/pom.xml @@ -24,5 +24,6 @@ ietf-restconf-monitoring + ietf-subscribed-notifications -- 2.36.6