Added Junit For VNFResolverDataReader
[appc.git] / appc-provider / appc-provider-model / src / main / yang / appc-provider-lcm.yang
index 6f2d0b4..2e369fa 100644 (file)
@@ -1,3 +1,29 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * ================================================================================
+ * Modifications Copyright (C) 2018 Orange
+ * =============================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
 /*
  * Yang model for the Application Controller (APP-C) component of ECOMP
  *
 module appc-provider-lcm {
 
     yang-version 1;
-    namespace "org:openecomp:appc";
+    namespace "org:onap:appc:lcm";
     prefix appc-provider-lcm;
-    organization "Copyright 2017 AT&T Intellectual Property.";
-
+        
     description
       "Defines the services and request/response requirements for the ECOMP APP-C component.";
 
@@ -43,47 +68,9 @@ module appc-provider-lcm {
      * APP-C controller functions.
      **********************************************************************************/
 
-    /*
-     * Define a common definition of a UUID
-     */
-    typedef UUID {
-        type string {
-            length "1..255";
-        }
-        description "Universally Unique ID";
-    }
-
-    /*
-     * Define the name of the provider region/LCP to connect to
-     */
-    typedef LCP {
-        type string {
-            length "1..255";
-        }
-        description "The local control plane name (OpenStack region name) of the provider";
-    }
-
-    /*
-     * Define a common definition of a time stamp (expressed as a formatted string) as follows
-     *
-     * yyyy-MM-dd HH:mm:ss.SSSSSSSS
-     *
-     * yyyy ...... exactly 4 digit year, e.g., 2015
-     * MM ........ 1 or 2 digit month of year, e.g., 7
-     * dd ........ 1 or 2 digit day of month, e.g., 29
-     * HH ........ 1 or 2 digit hour of day (24-hour clock) in UTC, e.g., 17
-     * mm ........ 1 or 2 digit minute of the hour, e.g. 31
-     * ss ........ 1 or 2 digit seconds of the minute, e.g., 28
-     * SSSSSS .... 1-6 digit microseconds
-     */
-    typedef TIMESTAMP {
-        type string {
-            length "16..28";
-            pattern "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2} [0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}.[0-9]{1,6}";
-        }
-    }
-
     typedef ZULU {
+        description "Define a common definition of a time stamp (expressed as a formatted
+                string) as follows yyyy-MM-ddTHH:mm:ss.SSSSSSSSZ";
         type string {
             length "16..28";
             pattern "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}T[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}.[0-9]{1,6}Z";
@@ -96,59 +83,72 @@ module appc-provider-lcm {
     }
 
     typedef action {
-         type enumeration {
-             enum "Restart";
-             enum "Rebuild";
-             enum "Migrate";
-             enum "Evacuate";
-             enum "Snapshot";
-             enum "Rollback";
-             enum "Sync";
-             enum "Audit";
-             enum "Stop";
-             enum "Terminate";
-             enum "SoftwareUpload";
-             enum "HealthCheck";
-             enum "LiveUpgrade";
-             enum "ModifyConfig";
-             enum "Lock";
-             enum "Unlock";
-             enum "Test";
-             enum "CheckLock";
-         }
-         description "The action to be taken by APP-C, e.g. Restart, Rebuild, Migrate";
+        type enumeration {
+            enum "Restart";
+            enum "Rebuild";
+            enum "Migrate";
+            enum "Evacuate";
+            enum "Snapshot";
+            enum "Rollback";
+            enum "Sync";
+            enum "Audit";
+            enum "Stop";
+            enum "Start";
+            enum "Terminate";
+            enum "SoftwareUpload";
+            enum "HealthCheck";
+            enum "LiveUpgrade";
+            enum "Lock";
+            enum "Unlock";
+            enum "Test";
+            enum "CheckLock";
+            enum "Configure";
+            enum "ConfigModify";
+            enum "ConfigScaleOut";
+            enum "ConfigRestore";
+            enum "ConfigBackup";
+            enum "ConfigBackupDelete";
+            enum "ConfigExport";
+            enum "StopApplication";
+            enum "StartApplication";
+            enum "QuiesceTraffic";
+            enum "ResumeTraffic";
+            enum "UpgradePreCheck";
+            enum "UpgradeSoftware";
+            enum "UpgradePostCheck";
+            enum "UpgradeBackup";
+            enum "UpgradeBackout";
+            enum "ActionStatus";
+            enum "Query";
+            enum "Reboot";
+            enum "AttachVolume";
+            enum "DetachVolume";
+            enum "DistributeTraffic";
+            
+        }
+        description "The action to be taken by APP-C, e.g. Restart, Rebuild, Migrate";
     }
 
-    /**********************************************************************************
-     * All requests will include this standard header
-     *
-     * The standard request header is used to define a correlation identification for
-     * the request that is returned on all responses.  This correlation identifier
-     * (called the service-request-id) is meaningful to the caller and is included on
-     * all responses from the services.
-     **********************************************************************************/
-    grouping common-request-header {
-        description "A common header for all requests";
-        container common-request-header {
-            leaf service-request-id {
-                description "An identifier meaningful to the caller to correlate all responses";
-                type string;
-                mandatory true;
-            }
+    typedef vm-state {
+        description "The state of a VM";
+        type enumeration {
+            enum "active";
+            enum "standby";
+            enum "inactive";
+            enum "unknown";
+        }
+    }
 
-            leaf time-to-live {
-                description "The alloted time to perform the operation, in seconds.  If the
-                    operation cannot be completed in this amount of time, the operation is
-                    aborted.  If set to zero, no timeout exists and the operation will continue
-                    until it completes or fails.  If omitted, the default value of 0 is used.";
-                type uint32 {
-                    range "0..86400";
-                }
-                mandatory false;
-            }
+    typedef vm-status {
+        description "The status of a VM";
+        type enumeration {
+            enum "healthy";
+            enum "unhealthy";
+            enum "unknown";
         }
     }
 
+
     /**********************************************************************************
      * Basic manipulation of a VNF (or VM) will typically include querying the current
      * state, restarting, rebuilding, stopping, starting, etc.  In all of these basic
@@ -157,195 +157,9 @@ module appc-provider-lcm {
      * information is used across all of these services, so it has been defined as a
      * common structure here and is referenced in the appropriate RPC definitions.
      **********************************************************************************/
-    grouping vnf-resource {
-        description "The data that uniquely identifies a virtual network function (or vm)";
-        container vnf-resource {
-            leaf vm-id {
-                description "The UUID of the resource.  For backwards compatibility, this can be
-                    the self-link URL of the VM.";
-                type UUID;
-                mandatory true;
-            }
-            leaf identity-url {
-                description "The identity url used to access the resource";
-                type UUID;
-                mandatory false;
-            }
-            leaf tenant-id {
-                description "The id of the provider tenant that owns the resource";
-                type string;
-                mandatory false;
-            }
-        }
-    }
+    
 
     /**********************************************************************************
-     * All responses will include this standard header
-     *
-     * The standard response header includes the time of completion as well as a
-     * success|failure indication
-     **********************************************************************************/
-    grouping common-response-header {
-        description "A common header for all responses defining success or failure
-            and the time stamp when completed";
-        container common-response-header {
-            leaf service-request-id {
-                description "An identifier meaningful to the caller to correlate all responses";
-                type string;
-            }
-            leaf success {
-                description "True indicates the request was successful";
-                type boolean;
-            }
-            leaf reason {
-                description "If success=false, the failure reason.  Otherwise, undefined.";
-                type string;
-            }
-            leaf completed {
-                description "The formatted time stamp when the operation was completed.";
-                type TIMESTAMP;
-            }
-            leaf duration {
-                description "The amount of time used (in seconds) to process the request";
-                type uint32;
-            }
-        }
-    }
-
-
-       /**********************************************************************************
-         * All requests/response will include this standard header
-         *
-         * The standard common header is used to define a correlation identification for
-         * the request that is returned on all responses.
-         **********************************************************************************/
-        grouping common-header {
-            description "A common header for all APP-C requests";
-            container common-header {
-                description "A common header for all APP-C requests";
-                leaf timestamp {
-                    description "timestamp is in ISO 8601 timestamp format ZULU offset";
-                    type ZULU;
-                    mandatory true;
-                }
-
-                leaf api-ver {
-                    description "api-ver is the API version identifier. A given release of APPC should support all previous versions of APPC API (correlate with general requirements)";
-                    type string {
-                        pattern "[2]\.\d\d"{
-                            error-message "API Version 2.XX is supported at this end point";
-                        }
-                    }
-                    mandatory true;
-                }
-
-                leaf originator-id {
-                    description "originator-id an identifier of the calling system which can be used addressing purposes, i.e. returning asynchronous response to the proper destination over DMaaP (especially in case of multiple consumers of APP-C APIs)";
-                    type string;
-                    mandatory true;
-                }
-
-                leaf request-id {
-                    description "UUID for the request ID. An OSS/BSS identifier for the request that caused the current action. Multiple API calls may be made with the same request-id \vThe request-id shall be recorded throughout the operations on a single request";
-                    type string;
-                    mandatory true;
-                }
-
-                leaf sub-request-id {
-                    description "Uniquely identifies a specific LCM action. It is persistent over the life-cycle of a single request";
-                    type string;
-                    mandatory false;
-                }
-
-
-                /**********************************************************************************
-                 * Flags are generic flags that apply to any and all commands, all are optional
-                 *  force = TRUE/FALSE - Execute command even if target is in unstable (i.e. locked, transiting, etc) state. Specific behaviour of forced commands varies, but implies cancellation of previous command and an override by the new command. The FALSE value is used by default.
-                 *  ttl = <0....N> - The timeout value for command execution, expressed in seconds
-                 *  mode = EXCLUSIVE/NORMAL - defines execution mode as follows:
-                 *        - EXCLUSIVE ? on encountering an exclusive command, the APP-C will:
-                 *          * Cease accepting additional command requests
-                 *          * Complete execution of outstanding commands
-                 *          * Execute the exclusive command to completion
-                 *          * Optionally report the result of the command
-                 *          * Optionally resume command acceptance and processing
-                 *        - NORMAL - Obverse of EXCLUSIVE, the default one.
-                 **********************************************************************************/
-                container flags {
-                    description "Flags are generic flags that apply to any and all commands, all are optional";
-                    leaf mode {
-                        type enumeration {
-                                         enum "EXCLUSIVE";
-                                         enum "NORMAL";
-                                     }
-                        description "EXCLUSIVE (accept no queued requests on this VNF while processing) or NORMAL (queue other requests until complete)";
-                        mandatory false;
-                    }
-                    leaf force {
-                        type enumeration {
-                                    enum "TRUE";
-                                    enum "FALSE";
-                               }
-                        description "TRUE/FALSE - Execute action even if target is in unstable (i.e. locked, transiting, etc.) state";
-                        mandatory false;
-                    }
-                    leaf ttl {
-                        description "<0....N> - The timeout value (expressed in seconds) for action execution, between action being received by APPC and action initiation";
-                        type uint16;
-                        mandatory false;
-                    }
-                }
-            }
-        }
-
-
-     grouping action-identifiers {
-            description "A block containing the action arguments. These are used to specify the object upon which APP-C LCM command is to operate";
-            container action-identifiers {
-                description "A block containing the action arguments. These are used to specify the object upon which APP-C LCM command is to operate";
-                leaf service-instance-id {
-                    description "identifies a specific service the command refers to. When multiple APP-C instances are used and applied to a subset of services, this will become significant . The field is mandatory when the vnf-id is empty";
-                    type string;
-                    mandatory false;
-                }
-                leaf vnf-id {
-                    description "identifies the VNF to which this action is to be applied(vnf-id uniquely identifies the service-instance referred to).  Note that some actions  are applied to multiple VNFs in the same service. When this is the case, vnf-id may be left out, but service-instance-id must appear. The field is mandatory when service-instance-id is empty";
-                    type string;
-                    mandatory false;
-                }
-                leaf vnfc-name {
-                    description "identifies the VNFC to which this action is to be applied. Some actions apply only to a component within a VNF (e.g. RESTART is sometimes applied to on VM only).  In such a case, the name of the VNFC is used to search for the component within the VNF";
-                    type string;
-                    mandatory false;
-                }
-                leaf vserver-id {
-                    description "identifies a specific VM within the given service/vnf to which this action is to be applied";
-                    type string;
-                    mandatory false;
-                }
-            }
-        }
-
-     grouping status {
-            description "The specific response codes are to be aligned with ASDC reference doc (main table removed to avoid duplication and digression from main table). See ASDC and ECOMP Distribution Consumer Interface Agreement";
-            container status {
-                description "The specific response codes are to be aligned with ASDC reference doc (main table removed to avoid duplication and digression from main table). See ASDC and ECOMP Distribution Consumer Interface Agreement";
-                leaf code {
-                    description "Response code";
-                    type uint16;
-                    mandatory true;
-                }
-                leaf message {
-                    description "Response message";
-                    type string;
-                    mandatory true;
-                }
-            }
-      }
-
-
-      /**********************************************************************************
-     * NEW API ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
      * All requests will include this standard header
      *
      * The standard request header is used to define a correlation identification for
@@ -353,311 +167,511 @@ module appc-provider-lcm {
      * (called the service-request-id) is meaningful to the caller and is included on
      * all responses from the services.
      **********************************************************************************/
-    grouping RequestHeader {
-        container RequestHeader {
+
+    /**********************************************************************************
+     * All responses will include this standard header
+     *
+     * The standard response header includes the time of completion as well as a
+     * success|failure indication
+     **********************************************************************************/
+
+    grouping common-header {
+        description "A common header for all APP-C requests";
+        container common-header {
             description "A common header for all APP-C requests";
-            leaf TimeStamp {
-                description "TimeStamp is in ISO 8601 timestamp format ZULU offset";
-                type TIMESTAMP;
+            leaf timestamp {
+                description "timestamp is in ISO 8601 timestamp format ZULU offset";
+                type ZULU;
                 mandatory true;
             }
 
-            leaf APIver {
-                description "APIver is the API version identifier. A given release of APPC should support all previous versions of APPC API (correlate with general requirements)";
-                type string;
+            leaf api-ver {
+                description "api-ver is the API version identifier. A given release of APPC
+                                should support all previous versions of APPC API (correlate with
+                                general requirements)";
+                type string {
+                    pattern "[2]\.\d\d" {
+                        error-message "API Version 2.XX is supported at this end point";
+                    }
+                }
                 mandatory true;
             }
 
-            leaf OriginatorID {
-                description "OriginatorID an identifier of the calling system which can be used addressing purposes, i.e. returning asynchronous response to the proper destination over DMaaP (especially in case of multiple consumers of APP-C APIs)";
+            leaf originator-id {
+                description "originator-id an identifier of the calling system which can be
+                                used addressing purposes, i.e. returning asynchronous response
+                                to the proper destination over DMaaP (especially in case of multiple
+                                consumers of APP-C APIs)";
                 type string;
                 mandatory true;
             }
 
-            leaf TransactionID {
-                description "Identifiers that may be generated when multiple responses or handling passes are needed for a given request, allowing the request itself to be tracked";
+            leaf request-id {
+                description "UUID for the request ID. An OSS/BSS identifier for the request
+                                that caused the current action. Multiple API calls may be made
+                                with the same request-id The request-id shall be recorded throughout
+                                the operations on a single request";
                 type string;
                 mandatory true;
             }
 
-            leaf-list RequestTrack {
-                description "Identifiers that may be generated when multiple responses or handling passes are needed for a given request, allowing the request itself to be tracked";
+            leaf sub-request-id {
+                description "Uniquely identifies a specific LCM action. It is persistent over
+                                the life-cycle of a single request";
                 type string;
+                mandatory false;
             }
 
+
             /**********************************************************************************
              * Flags are generic flags that apply to any and all commands, all are optional
-             *  FORCE = TRUE/FALSE - Execute command even if target is in unstable (i.e. locked, transiting, etc) state. Specific behaviour of forced commands varies, but implies cancellation of previous command and an override by the new command. The FALSE value is used by default.
-             *  TTL = <0....N> - The timeout value for command execution, expressed in seconds
-             *  MODE = EXCLUSIVE/NORMAL - defines execution mode as follows:
-             *        - EXCLUSIVE � on encountering an exclusive command, the APP-C will:
+             *  force = TRUE/FALSE - Execute command even if target is in unstable (i.e. locked, transiting, etc)
+             *                       state. Specific behaviour of forced commands varies, but implies cancellation
+             *                       of previous command and an override by the new command. The FALSE value is
+             *                       used by default.
+             *  ttl = <0....N> - The timeout value for command execution, expressed in seconds
+             *  mode = EXCLUSIVE/NORMAL - defines execution mode as follows:
+             *        - EXCLUSIVE ? on encountering an exclusive command, the APP-C will:
              *          * Cease accepting additional command requests
-
-             * Complete execution of outstanding commands
+             *          * Complete execution of outstanding commands
              *          * Execute the exclusive command to completion
              *          * Optionally report the result of the command
              *          * Optionally resume command acceptance and processing
              *        - NORMAL - Obverse of EXCLUSIVE, the default one.
              **********************************************************************************/
-            container Flags {
+            container flags {
                 description "Flags are generic flags that apply to any and all commands, all are optional";
-                leaf FORCE {
-                    description "TRUE/FALSE - Execute action even if target is in unstable (i.e. locked, transiting, etc) state.";
-                    type string;
+                leaf mode {
+                    type enumeration {
+                        enum "EXCLUSIVE";
+                        enum "NORMAL";
+                    }
+                    description "EXCLUSIVE (accept no queued requests on this VNF while processing)
+                                        or NORMAL (queue other requests until complete)";
                     mandatory false;
                 }
-                leaf TTL {
-                    description "<0....N> - The timeout value for action execution, expressed in seconds";
-                    type string;
+                leaf force {
+                    type enumeration {
+                        enum "TRUE";
+                        enum "FALSE";
+                    }
+                    description "TRUE/FALSE - Execute action even if target is in unstable (i.e.
+                                        locked, transiting, etc.) state";
                     mandatory false;
                 }
-                leaf MODE {
-                    description "EXCLUSIVE/NORMAL - defines execution mode";
-                    type string;
+                leaf ttl {
+                    description "<0....N> - The timeout value (expressed in seconds) for action
+                                        execution, between action being received by APPC and action initiation";
+                    type uint16;
                     mandatory false;
                 }
             }
         }
     }
 
-    grouping RequestParameters {
-        description "The request contains the entry of command-specific and is opaque to the APP-C handler";
-        leaf Action {
-            description "The actual action to be taken";
-            type string;
-            mandatory true;
-        }
-        leaf TargetID {
-            description "The specific VF a component of which is to be affected";
-            type string;
-            mandatory true;
-        }
-        leaf ObjectID {
-            description "The specific VFC within a VF to be affected";
-            type string;
-            mandatory true;
-        }
-        leaf Payload {
-            description "An action-specific value opaque to the APPC handler.
-                         The value can be any valid JSON type (primitive, object, collection of those two).
-                         APPC will pass the value as raw JSON string to the executing LCM action.";
-            type string;
-            mandatory true;
-        }
-    }
 
-    grouping ResponseHeader {
-        description "The response to an APP-C command or control is, likewise, encoded in a JSON object. ";
-        container ResponseHeader {
-            description "The response to an APP-C command or control is, likewise, encoded in a JSON object. ";
-            leaf TimeStamp {
-                description "TimeStamp is in ISO 8601 timestamp format ZULU offset";
-                type TIMESTAMP;
-                mandatory true;
+    grouping action-identifiers {
+        description "A block containing the action arguments. These are used to specify
+                the object upon which APP-C LCM command is to operate";
+        container action-identifiers {
+            description "A block containing the action arguments. These are used to specify
+                        the object upon which APP-C LCM command is to operate";
+            leaf service-instance-id {
+                description "identifies a specific service the command refers to. When multiple
+                                APP-C instances are used and applied to a subset of services,
+                                this will become significant . The field is mandatory when the
+                                vnf-id is empty";
+                type string;
+                mandatory false;
             }
-
-            leaf APIver {
-                description "APIver is the API version identifier. A given release of APPC should support all previous versions of APPC API (correlate with general requirements)";
+            leaf vnf-id {
+                description "identifies the VNF to which this action is to be applied(vnf-id
+                                uniquely identifies the service-instance referred to). Note that
+                                some actions are applied to multiple VNFs in the same service.
+                                When this is the case, vnf-id may be left out, but service-instance-id
+                                must appear. The field is mandatory when service-instance-id is
+                                empty";
                 type string;
-                mandatory true;
+                mandatory false;
             }
-
-            leaf ResponseID {
-                description "ResponseID an identifier of the calling system which can be used addressing purposes, i.e. returning asynchronous response to the proper destination over DMaaP (especially in case of multiple consumers of APP-C APIs)";
+            leaf vf-module-id {
+                description "identifies the VF module to which this action is to be applied.";
                 type string;
-                mandatory true;
+                mandatory false;
             }
-
-            leaf-list SubResponseID {
-                description "Identifiers that may be generated when multiple responses or handling passes are needed for a given request, allowing the request itself to be tracked";
+            leaf vnfc-name {
+                description "identifies the VNFC to which this action is to be applied. Some
+                                actions apply only to a component within a VNF (e.g. RESTART is
+                                sometimes applied to on VM only). In such a case, the name of
+                                the VNFC is used to search for the component within the VNF";
                 type string;
+                mandatory false;
+            }
+            leaf vserver-id {
+                description "identifies a specific VM within the given service/vnf to which
+                                this action is to be applied";
+                type string;
+                mandatory false;
             }
         }
     }
 
-    grouping ResponseAttributes {
-        description "The response contains the status of executed functionality";
-        container Status {
-            description "The specific response codes are to be aligned with ASDC reference doc (main table removed to avoid duplication and digression from main table). See ASDC and ECOMP Distribution Consumer Interface Agreement";
-            leaf Code {
-                description "Response code value";
-                type uint32;
-                mandatory true;
+
+     grouping status {
+            description "The specific response codes are to be aligned with SDC reference doc
+                         (main table removed to avoid duplication and digression from main table).
+                         See SDC and ECOMP Distribution Consumer Interface Agreement";
+            container status {
+                description "The specific response codes are to be aligned with SDC reference doc
+                             (main table removed to avoid duplication and digression from main table).
+                             See SDC and ECOMP Distribution Consumer Interface Agreement";
+                leaf code {
+                    description "Response code";
+                    type uint16;
+                    mandatory true;
+                }
+                leaf message {
+                    description "Response message";
+                    type string;
+                    mandatory true;
+                }
             }
-            leaf Value {
-                description "Response code description";
-                type string;
+      }
+
+     typedef lcm-action-status {
+         type enumeration {
+                 enum "IN_PROGRESS";
+                 enum "SUCCESSFUL";
+                 enum "FAILED";
+                 enum "NOT_FOUND";
+                 enum "ABORTED";
+                 enum "MULTIPLE_REQUESTS_FOUND";
+         }
+         description "The status of the requested LCM action";
+     }
+
+    /**********************************************************************************
+     * Define the restart service
+     **********************************************************************************/
+    rpc restart {
+        description "An operation to restart a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
                 mandatory true;
             }
+            uses action-identifiers;
+                 leaf payload {
+                 type payload;
+                 mandatory false;
+            }
         }
-        leaf Payload {
-            description "Payload - the entry is command-specific and is opaque to the APP-C handler.
-                         The value can be any valid JSON type (primitive, object, collection of those two).
-                         APP-C will pass the value as raw JSON string to appropriate addressee";
-            type string;
-            mandatory false;
+        output {
+            uses common-header;
+            uses status;
         }
     }
 
-
-
-
-
-
     /**********************************************************************************
-             * Define the restart service
-             **********************************************************************************/
-            rpc restart {
-                description "An operation to restart a virtual network function (or VM)";
-                 input {
-                    uses common-header;
-                    leaf action {
-                        type action;
-                        mandatory true;
-                    }
-                    uses action-identifiers;
-                    leaf payload {
-                      type payload;
-                      mandatory false;
-                    }
-                }
-                output {
-                    uses common-header;
-                    uses status;
-                }
+     * Define the rebuild service
+     **********************************************************************************/
+    rpc rebuild {
+        description "An operation to rebuild a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
             }
+            uses action-identifiers;
+            leaf payload {
+            type payload;
+            mandatory false;
+        }
+    }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
 
-            /**********************************************************************************
-             * Define the rebuild service
-             **********************************************************************************/
-            rpc rebuild {
-                description "An operation to rebuild a virtual network function (or VM)";
-                input {
-                    uses common-header;
-                    leaf action {
-                        type action;
-                        mandatory true;
-                    }
-                    uses action-identifiers;
-                    leaf payload {
-                        type payload;
-                        mandatory false;
-                    }
-                }
-                output {
-                    uses common-header;
-                    uses status;
-                }
+    /**********************************************************************************
+     * Define the migrate service
+     **********************************************************************************/
+    rpc migrate {
+        description "An operation to migrate a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
             }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
 
-            /**********************************************************************************
-             * Define the migrate service
-             **********************************************************************************/
-            rpc migrate {
-                description "An operation to migrate a virtual network function (or VM)";
-                input {
-                    uses common-header;
-                    leaf action {
-                        type action;
-                        mandatory true;
-                    }
-                    uses action-identifiers;
-                    leaf payload {
-                        type payload;
-                        mandatory false;
-                    }
-                }
-                output {
-                    uses common-header;
-                    uses status;
-                }
+    /**********************************************************************************
+     * Define the evacuate service
+     **********************************************************************************/
+    rpc evacuate {
+        description "An operation to evacuate a virtual network function (or VM)";
+         input {
+             uses common-header;
+             leaf action {
+                 type action;
+                  mandatory true;
+             }
+             uses action-identifiers;
+             leaf payload {
+                 type payload;
+                 mandatory false;
+             }
+         }
+         output {
+             uses common-header;
+             uses status;
+         }
+    }
+
+    /**********************************************************************************
+     * Define the snapshot service
+     **********************************************************************************/
+    rpc snapshot {
+        description "An operation to create a snapshot of a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+             }
+              uses action-identifiers;
+              leaf payload {
+                  type payload;
+                  mandatory false;
+              }
+              leaf identity-url {
+                  type string;
+                  mandatory true;
+              }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf snapshot-id {
+                type string;
+            }
+        }
+    }
+    /**********************************************************************************
+     * Define the VNF quiesce traffic service
+     **********************************************************************************/
+    rpc quiesce-traffic {
+        description "An operation to stop traffic gracefully on the VF.
+                     It stops traffic gracefully without stopping the application";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
             }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
 
-             /**********************************************************************************
-             * Define the evacuate service
-             **********************************************************************************/
-            rpc evacuate {
-                description "An operation to evacuate a virtual network function (or VM)";
-                input {
-                    uses common-header;
-                    leaf action {
-                        type action;
-                        mandatory true;
-                    }
-                    uses action-identifiers;
-                    leaf payload {
-                        type payload;
-                        mandatory false;
+    /**********************************************************************************
+     * Define the VNF resume traffic service
+     **********************************************************************************/
+    rpc resume-traffic {
+        description "An operation to resume traffic gracefully on the VF.
+                     It resumes traffic gracefully without stopping the application";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+    }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the VNF UpgradePreCheck service
+     **********************************************************************************/
+    rpc upgrade-pre-check {
+        description "An operation to check that the VNF has the correct software version needed for a software upgrade.";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                type payload;
+                mandatory true;
                     }
-                }
-                output {
-                    uses common-header;
-                    uses status;
-                }
+        }
+    }
+
+    /**********************************************************************************
+     * Define the VNF UpgradeSoftware service
+     **********************************************************************************/
+    rpc upgrade-software {
+        description "An operation to upgrade the target VNF to a new version and expected that the VNF is in a quiesced status .";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
             }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
 
+    /**********************************************************************************
+     * Define the VNF UpgradePostCheck service
+     **********************************************************************************/
+    rpc upgrade-post-check {
+        description "An operation to check the VNF upgrade has been successful completed and all processes are running properly.";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                type payload;
+                mandatory true;
+                         }
+        }
+    }
 
-        /**********************************************************************************
-         * Define the snapshot service
-         **********************************************************************************/
-        rpc snapshot {
-            description "An operation to create a snapshot of a virtual network function (or VM)";
-            input {
-                uses common-header;
-                leaf action {
-                  type action;
-                  mandatory true;
-                }
-                uses action-identifiers;
-                leaf payload {
-                  type payload;
-                  mandatory false;
-                }
-                leaf identity-url {
-                    type string;
-                     mandatory true;
-                }
+    /**********************************************************************************
+     * Define the VNF UpgradeBackup service
+     **********************************************************************************/
+    rpc upgrade-backup {
+        description "An operation to do full backup of the VNF data prior to an upgrade.";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
             }
-            output {
-                uses common-header;
-                uses status;
-                leaf snapshot-id {
-                    type string;
-                }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
 
+    /**********************************************************************************
+     * Define the VNF UpgradeBackout service
+     **********************************************************************************/
+    rpc upgrade-backout {
+        description "An operation does a backout after an UpgradeSoftware is completed (either successfully or unsuccessfully).";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
             }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+           }
+        }
+        output {
+            uses common-header;
+            uses status;
         }
+    }
 
-        /**********************************************************************************
-         * Define the rollback service
-         **********************************************************************************/
-        rpc rollback {
-            description "An operation to rollback to particular snapshot of a virtual network function (or VM)";
-            input {
-                uses common-header;
-                leaf action {
-                  type action;
-                  mandatory true;
-                }
-                uses action-identifiers;
-                leaf payload {
-                  type payload;
-                  mandatory false;
-                }
-                leaf identity-url {
-                    type string;
-                     mandatory true;
-                }
-                leaf snapshot-id {
-                    type string;
-                     mandatory true;
-                }
+    /**********************************************************************************
+     * Define the rollback service
+     **********************************************************************************/
+    rpc rollback {
+        description "An operation to rollback to particular snapshot of a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                 mandatory true;
             }
-            output {
-                uses common-header;
-                uses status;
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+            leaf identity-url {
+                type string;
+                mandatory true;
+            }
+            leaf snapshot-id {
+                type string;
+                 mandatory true;
             }
         }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
 
 
     /**********************************************************************************
@@ -665,7 +679,7 @@ module appc-provider-lcm {
      **********************************************************************************/
 
 
-      /**********************************************************************************
+    /**********************************************************************************
      * Define the sync service
      **********************************************************************************/
     rpc sync {
@@ -677,10 +691,18 @@ module appc-provider-lcm {
                        mandatory true;
             }
             uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
         }
         output {
             uses common-header;
             uses status;
+            leaf payload {
+                type payload;
+                mandatory false;
+           }
         }
     }
 
@@ -707,215 +729,328 @@ module appc-provider-lcm {
         }
     }
 
-    /**********************************************************************************
-     * Define the modify-config service
-     **********************************************************************************/
-    rpc modify-config {
-        description "An operation to modify-config the configurations of a virtual network function (or VM)";
+
+    rpc configure {
+        description "An operation to configure the configurations of a virtual network
+                function (or VM)";
         input {
             uses common-header;
             leaf action {
-                       type action;
-                       mandatory true;
+                type action;
+                mandatory true;
             }
             uses action-identifiers;
             leaf payload {
-                        type payload;
-                        mandatory false;
+                type payload;
+                mandatory false;
             }
         }
         output {
             uses common-header;
             uses status;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
         }
     }
 
-    /**********************************************************************************
-         * Define the test service
-         **********************************************************************************/
-    rpc test {
-        description "An operation to test the configurations of a virtual network function (or VM)";
+    rpc config-modify {
+        description "Use the ModifyConfig command when a full configuration cycle is either not required
+                     or is considered too costly. The ModifyConfig LCM action affects only a subset of the
+                     total configuration data of a VNF. The set of configuration parameters to be affected
+                     is a subset of the total configuration data of the target VNF type. The payload Stop
+                     Application must contain the configuration parameters to be modified and their values.
+                     A successful modify returns a success response. A failed modify returns a failure
+                     response and the specific failure messages in the response payload Stop Application";
         input {
             uses common-header;
             leaf action {
-                       type action;
-                       mandatory true;
+                type action;
+                mandatory true;
             }
             uses action-identifiers;
             leaf payload {
-                        type payload;
-                        mandatory false;
+                type payload;
+                mandatory false;
             }
         }
         output {
             uses common-header;
             uses status;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
         }
     }
 
-        /**********************************************************************************
-         * Define the stop service
-         **********************************************************************************/
-        rpc stop {
-            description "An operation to stop the configurations of a virtual network function (or VM)";
+    rpc config-scale-out {
+            description "An operation to Modify the configuration or other action to support
+            a ConfigScaleOut of a VNF.";
             input {
                 uses common-header;
                 leaf action {
-                           type action;
-                           mandatory true;
+                    type action;
+                    mandatory true;
                 }
                 uses action-identifiers;
                 leaf payload {
-                            type payload;
-                            mandatory false;
+                    type payload;
+                    mandatory true;
                 }
             }
             output {
                 uses common-header;
                 uses status;
+                leaf payload {
+                     type payload;
+                     mandatory false;
+                }
             }
         }
 
-       /**********************************************************************************
-        * Define the audit service
-        **********************************************************************************/
-       rpc audit {
-           description "An operation to audit the configurations of a virtual network function (or VM)";
-           input {
-               uses common-header;
-               leaf action {
-                          type action;
-                          mandatory true;
-               }
-               uses action-identifiers;
-           }
-           output {
-               uses common-header;
-               uses status;
-           }
-       }
+    rpc config-restore {
+        description "An operation to restore the configurations of a virtual network
+                function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
+        }
+    }
 
-       /**********************************************************************************
-       * Define the SoftwareUpload vSCP service
-       **********************************************************************************/
-      rpc software-upload {
-          description "An operation to upload a new version of vSCP image to vSCP for updating it";
+    /**********************************************************************************
+     * Define the test service
+     **********************************************************************************/
+    rpc test {
+        description "An operation to test the configurations of a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                       type action;
+                       mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                        type payload;
+                        mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the stop service
+     **********************************************************************************/
+    rpc stop {
+        description "An operation to stop the configurations of a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    rpc start {
+        description "An operation to start a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the audit service
+     **********************************************************************************/
+    rpc audit {
+        description "An operation to audit the configurations of a virtual network function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+    }
+
+    /**********************************************************************************
+     * Define the SoftwareUpload vSCP service
+     **********************************************************************************/
+    rpc software-upload {
+        description "An operation to upload a new version of vSCP image to vSCP for updating it";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the PreHealthCheck vSCP service
+     **********************************************************************************/
+    rpc health-check {
+        description "An operation to perform health check of vSCP prior its upgrading";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                type payload;
+                mandatory true;
+                         }
+
+        }
+    }
+
+
+    /**********************************************************************************
+     * Define the Upgrade vSCP service
+     **********************************************************************************/
+    rpc live-upgrade {
+        description "An operation to perform upgrade of vSCP";
+        input {
+            uses common-header;
+            leaf action {
+                 type action;
+                 mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+
+    /**********************************************************************************
+     * Define the VNF lock service
+     **********************************************************************************/
+    rpc lock {
+         description "An operation to perform VNF lock operation";
           input {
               uses common-header;
-              leaf action {
-                         type action;
-                         mandatory true;
-              }
-              uses action-identifiers;
-              leaf payload {
-                          type payload;
-                          mandatory false;
-              }
+               leaf action {
+                   type action;
+                   mandatory true;
+               }
+               uses action-identifiers;
+               leaf payload {
+                   type payload;
+                   mandatory false;
+               }
           }
           output {
               uses common-header;
               uses status;
           }
-      }
-
-
-
-      /**********************************************************************************
-           * Define the PreHealthCheck vSCP service
-           **********************************************************************************/
-          rpc health-check {
-              description "An operation to perform health check of vSCP prior its upgrading";
-              input {
-                  uses common-header;
-                  leaf action {
-                             type action;
-                             mandatory true;
-                  }
-                  uses action-identifiers;
-                  leaf payload {
-                                                   type payload;
-                                                   mandatory false;
-                                       }
-              }
-              output {
-                  uses common-header;
-                  uses status;
-
-              }
-          }
-
+    }
 
     /**********************************************************************************
-              * Define the Upgrade vSCP service
-              **********************************************************************************/
-             rpc live-upgrade {
-                 description "An operation to perform upgrade of vSCP";
-                 input {
-                     uses common-header;
-                     leaf action {
-                                type action;
-                                mandatory true;
-                     }
-                     uses action-identifiers;
-                     leaf payload {
-                                 type payload;
-                                 mandatory false;
-                     }
-                 }
-                 output {
-                     uses common-header;
-                     uses status;
-                 }
+     * Define the VNF unlock service
+     **********************************************************************************/
+    rpc unlock {
+        description "An operation to perform VNF unlock operation";
+         input {
+             uses common-header;
+             leaf action {
+                 type action;
+                 mandatory true;
              }
+             uses action-identifiers;
+             leaf payload {
+                 type payload;
+                 mandatory false;
+             }
+         }
+         output {
+             uses common-header;
+             uses status;
+         }
+    }
 
-
-     /**********************************************************************************
-                     * Define the VNF lock service
-                     **********************************************************************************/
-                    rpc lock {
-                        description "An operation to perform VNF lock operation";
-                        input {
-                            uses common-header;
-                            leaf action {
-                                       type action;
-                                       mandatory true;
-                            }
-                            uses action-identifiers;
-                            leaf payload {
-                                        type payload;
-                                        mandatory false;
-                            }
-                        }
-                        output {
-                            uses common-header;
-                            uses status;
-                        }
-                    }
-
-        /**********************************************************************************
-                         * Define the VNF unlock service
-                         **********************************************************************************/
-                        rpc unlock {
-                            description "An operation to perform VNF unlock operation";
-                            input {
-                                uses common-header;
-                                leaf action {
-                                           type action;
-                                           mandatory true;
-                                }
-                                uses action-identifiers;
-                                leaf payload {
-                                            type payload;
-                                            mandatory false;
-                                }
-                            }
-                            output {
-                                uses common-header;
-                                uses status;
-                            }
-                        }
-
-     /**********************************************************************************
+    /**********************************************************************************
      * Define the VNF check lock service
      **********************************************************************************/
     rpc check-lock {
@@ -943,7 +1078,271 @@ module appc-provider-lcm {
     }
 
 
+    rpc config-backup {
+        description "An operation to Backup configurations of a virtual network function
+                (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
+        }
+    }
+
+    rpc config-backup-delete {
+        description "An operation to Delete backup configurations of a virtual network
+                function (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+        }
+        output {
+            uses common-header;
+            uses status;
+            leaf payload {
+                 type payload;
+                 mandatory false;
+            }
+        }
+    }
+
+    rpc config-export {
+        description "An operation to Export configurations of a virtual network function
+                (or VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+    rpc stop-application {
+            description "An operation to Stop Application traffic to a virtual network function";
+            input {
+                uses common-header;
+                leaf action {
+                    type action;
+                    mandatory true;
+                }
+                uses action-identifiers;
+                leaf payload {
+                     type payload;
+                     mandatory false;
+                }
+            }
+            output {
+                uses common-header;
+                uses status;
+            }
+        }
+
+    /**********************************************************************************
+     * Define the VNF Start Application service
+     **********************************************************************************/
+    rpc start-application {
+        description "An operation to perform VNF Start Application operation";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                 mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+
     /**********************************************************************************
-     * Additional RPCs added here...
+     * Gets the current state of the previously submitted LCM request
      **********************************************************************************/
+    rpc action-status {
+        description "An operation to get the current state of the previously submitted LCM request";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+        }
+        output {
+           uses common-header;
+           uses status;
+           leaf payload {
+                type payload;
+           }
+        }
+    }
+
+    /**********************************************************************************
+     * Define the VNF Query service
+     **********************************************************************************/
+    rpc query {
+        description "An operation to query the status of a targe VNF.
+                     Returns information on each VM, including state (active or standby)
+                     and status (healthy or unhealthy)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+        }
+        output {
+            uses common-header;
+            uses status;
+            list query-results {
+                leaf vserver-id {
+                    description "Identifier of a VM";
+                    type string;
+                    mandatory true;
+                }
+                leaf vm-state {
+                    description "The state of the VM";
+                    type vm-state;
+                    mandatory true;
+                }
+                leaf vm-status {
+                    description "the status of the VM";
+                    type vm-status;
+                    mandatory true;
+                }
+            }
+        }
+    }
+
+    /**********************************************************************************
+     * Define the Reboot service
+     **********************************************************************************/
+    rpc reboot {
+        description "An operation to reboot a specified virtual machine (VM)";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory false;
+            }
+         }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the VM attach volume service
+     **********************************************************************************/
+    rpc attach-volume {
+        description "An operation to attach a cinder volume to a VM";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                 type payload;
+                 mandatory true;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the VM detach volume service
+     **********************************************************************************/
+    rpc detach-volume {
+        description "An operation to detach a cinder volume from a VM";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                 type payload;
+                 mandatory true;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+    /**********************************************************************************
+     * Define the traffic distribution service
+     **********************************************************************************/
+    rpc distribute-traffic {
+        description "An operation to distribute traffic between VMs";
+        input {
+            uses common-header;
+            leaf action {
+                type action;
+                mandatory true;
+            }
+            uses action-identifiers;
+            leaf payload {
+                type payload;
+                mandatory true;
+            }
+        }
+        output {
+            uses common-header;
+            uses status;
+        }
+    }
+
+
+
+ /**********************************************************************************
+     * Additional RPCs added here...
+ **********************************************************************************/
 }