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authorScott Seabolt <js9808@att.com>2017-10-24 09:12:13 -0400
committerScott Seabolt <js9808@att.com>2017-10-24 09:12:51 -0400
commitd9fbc64e30cfe0079d04089156e58c0f14e48886 (patch)
treec42316e40ba2333f17130201407bf1423946bd7e /docs/APPC User Guide/APPC User Guide.rst
parent78a683eeca705d35f6a3ff1938582a7bc383024a (diff)
Added APPC User Guide
Added the APPC User Guide Identity-Id: APPC-103 Change-Id: I91b24ff47c2d7a670728b4c67147db5d9bf7d1d1 Signed-off-by: Scott Seabolt <js9808@att.com>
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+.. ============LICENSE_START==========================================
+.. ===================================================================
+.. Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+.. ===================================================================
+.. Licensed under the Creative Commons License, Attribution 4.0 Intl. (the "License");
+.. you may not use this documentation except in compliance with the License.
+.. You may obtain a copy of the License at
+..
+.. https://creativecommons.org/licenses/by/4.0/
+..
+.. 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.
+.. ============LICENSE_END============================================
+.. ECOMP is a trademark and service mark of AT&T Intellectual Property.
+
+========================================
+Application Controller (APPC) User Guide
+========================================
+
+APPC Overview and Architecture
+==============================
+The Application Controller (APPC) is one of the components of the ONAP
+platform. It is responsible for handling the Life Cycle Management (LCM)
+of Virtual Network Functions (VNFs).
+
+This document provides an overview of the APPC components that enable
+the LCM operations.
+
+Implementation
+--------------
+The APPC infrastructure is implemented on virtual machines in an
+OpenStack cloud in the Amsterdam release. APPC is created on top of the OpenDaylight (ODL)
+platform
+
+The following diagram represents a non-redundant APP-C deployment.
+
+|image0|
+
+Features
+--------
+The APPC HTTP API supports Life Cycle Management (LCM) commands,
+allowing users to manage virtual applications and their components via
+other ONAP components. Refer to Architecture section for further
+details.
+
+Interface
+---------
+The Application Controller Dashboard interacts with the controller
+using REST APIs and performs actions on VNF/VNFC/VMs, such as snapshot,
+lock, sync, and health-check.
+
+Dashboard
+~~~~~~~~~
+
+To open the Application Controller dashboard, go to:
+
+|image1|
+
+Navigate to the available LCM commands by clicking on
+ **appc-provider-lcm**:
+
+|image2|
+
+Click on the URI of the desired action to open a frame with information
+about the action and an option to try it out. For example, to send the
+action, add the request body as the input parameter value, and click
+**Try it out!**
+
+The following figure shows an example body of a LCM restart request:
+
+|image3|
+
+If the request is accepted, you should see the following response:
+
+|image4|
+
+APPC Architecture
+-----------------
+
+This section discusses the APPC internal components in detail.
+
+**APPC High Level Architecture**
+
+|image5|
+
+Northbound REST Layer
+~~~~~~~~~~~~~~~~~~~~~
+
+This layer is responsible for interfacing with APPC clients, such as SO
+or SDC and others, exposing YANG-based API via REST HTTP and/or DMaaP
+messaging (see the Interfaces Summary section for details). In addition,
+it exposes APPC OAM (Operation Administration Management) APIs, enabling
+ONAP Operations Manager (OOM) or TechOps portal to perform APPC
+lifecycle operations
+
+APPC Provider
+~~~~~~~~~~~~~
+
+The APPC Provider module exposes the endpoints for each action
+supported by APPC. This module uses the YANG model to define the
+YANG Remote Processing Call (RPC) and data model, in other words,
+the input and output parameters for each action. The Provider module
+is responsible for validating the RPC input and for rejecting any
+malformed input. After successful validation, the APPC Provider
+calls the Dispatcher to continue the request processing.
+
+LCM API
+~~~~~~~
+
+The APPC exposes an HTTP API to support the Life Cycle Management
+(LCM) commands sent from ONAP components such as SO, SDC, and the
+Portal. These commands enable the components to request APPC to
+perform actions such as to control, modify, start, or stop virtual
+applications and/or their components. 
+
+A virtual application is composed of the following layers. A Life
+Cycle Management command may affect any number of these layers.
+
+- Virtual Network Function (VNF)
+
+- Virtual Network Function Component (VNFC)
+
+- Virtual Machine (VM)
+
+APP-C supports two types of LCM requests, as described below.
+
+**Note:** For further information about LCM API, including details of
+all the commands currently supported in APP-C and examples of the
+request and response format see the ONAP Application Controller (APPC) API Guide. 
+
+LCM over REST
+^^^^^^^^^^^^^^
+
+LCM command requests over REST are sent to the APPC using an HTTP
+POST request. APPC returns one or more responses for each LCM
+request. 
+
+The APP-C LCM API provides a POST HTTP API endpoint per command. 
+
+An **asynchronous** command, containing an authorized and valid
+request, results in at least two discrete response events:
+
+- an ACCEPT (a synchronous HTTP response) to indicate that the request
+ is accepted and will be processed, and
+
+- a final asynchronous response for the command containing an execution
+ status is sent via DMaaP
+
+An unauthorized or invalid request would result in a single
+ERROR response. 
+
+For commands such as Restart, Start, and Stop, the asynchronous response
+is sent over DMaaP.
+
+A **synchronous** command, for example Lock or Unlock, results in a
+single response, which is either SUCCESS or ERROR. For this type of
+request, the first response is a synchronous HTTP response..
+
+For this release, APPC supports the HTTPS protocol, whereas the plain
+HTTP requests are blocked..
+
+Endpoint format: 
+
+``<http-protocol>://<appc-ip>:<appc-api-port>/restconf/operations/appc-provider-lcm:<command-name>``
+
+LCM over Message Bus (DMaaP)
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+APPC is capable of receiving LCM command requests as messages on the
+DMaaP bus. In this case, APPC returns one or more responses for each LCM
+request, similar to LCM over REST, while both are communicated over
+DMaaP.
+
+Configure the Read/Write topics for the DMaaP as described in APPC
+Deployment, APPC Available Properties.
+
+APPC client library, embedded into APPC client’s (for example, SO) code,
+intends to simplify communication over DMaaP by eliminating topic
+provisioning at the client site. Refer to
+http://onap.readthedocs.io/en/latest/ for more details on the APPC
+Client Library.
+
+For further information about the request and response format, see
+the APPC API Guide at http://onap.readthedocs.io/en/latest/
+
+Dispatcher
+~~~~~~~~~~
+
+The APPC Dispatcher component processes requests received by the Request
+Handler from other ECOMP components. The Dispatcher checks the
+conditions are sufficient for performing the request and selects the
+correct Direct Graph (DG) workflow for execution or rejects the request.
+When the DG execution is complete, the Dispatching function is
+responsible for notifying the initiator of the operation with the
+request execution result (Success/Error) and updates the VNF
+Orchestration state in Active and Available Inventory (A&AI).
+
+The detailed responsibilities of the Dispatcher are as follows:
+
+- Upon receiving the operation request, the Dispatcher performs the
+ synchronous part of the execution:
+
+ - Starts the operation's time-to-live countdown
+
+ - Queries A&AI to get the VNF type and its current orchestration
+ state
+
+ - Checks VNF\_type-specific rules in the LCM State machine for
+ whether to allow or reject the requested command execution
+
+ - Allocates and initiates an appropriate DG workflow by invoking the
+ Service Logic Interpreter (SLI) framework to start the
+ asynchronous part of the execution
+
+ - Returns a response to the initiator: OK or reject (for example, if
+ the State Machine blocks the operation, no DG or time-to-live, or
+ bad parameters)
+
+ - If the operation is rejected, the Dispatcher generates an
+ appropriate Audit log for the Event and Error Logging Framework
+ (EELF) and the Local Event Journal
+
+- Upon workflow completion, the Dispatcher:
+
+ - Receives the execution results from the DG from the SLI framework
+
+ - Publishes the execution result over DMaaP (success or error)
+
+ - Updates VNF status in A&AI
+
+ - Generates an Audit log for EELF and Local Event Journal
+
+Request Handler
+^^^^^^^^^^^^^^^
+
+The Request Handler manages incoming requests and locks APPC for new
+requests, as needed for operations with a specific command execution
+sequences.
+
+Lifecycle Management
+^^^^^^^^^^^^^^^^^^^^
+
+The Lifecycle Management VNF State Machine enables the Dispatching
+function to determine the validity of the requested operation (desired
+state) as a function of the current VNF state, acquired from the A&AI.
+The State Machine maintains its data (states and valid operations)
+in-memory. At the point of APPC initialization, the State Machine
+constructs a matrix based on the metadata of the current operation and
+the valid desired state. 
+
+Command Executor
+^^^^^^^^^^^^^^^^
+
+Manages command execution queue.
+
+State Machine
+~~~~~~~~~~~~~
+
+The VNF State machine enables the Dispatching function to determine
+the validity of the requested operation (desired state) as a
+function of the current VNF state, acquired from the A&AI. The State
+machine maintains its data (states and valid operations) in-memory.
+At the point of APP-C initialization, the State Machine constructs a
+matrix based on the metadata of the current operation and the valid
+desired state. 
+
+The Service Logic Interpreter (SLI) Framework
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The SLI framework is responsible for executing Directed Graphs (DGs).
+The Dispatcher invokes the SLI framework to execute a specific DG, based
+on the input action. The SLI executes the DG and the sub-DG and returns
+a success or failure response to the caller along with the context
+variables used to exchange data with the calling body (for example, the
+Dispatcher). The caller can use the SLI context to specify data required
+for DG execution. The DG returns the same context when execution
+completes.
+
+Currently, there is a combination of input action specific and/or VNF
+type specific DG’s as well as a DGOrchestrator DG which is action and
+VNF type agnostic. The DGOrchestrator approach consists of the
+following:
+
+- DGOrchestrator DG which:
+
+ - Accepts request from the Dispatcher and converts it into DG
+ context format
+
+ - Calls A&AI to retrieve the inventory for the VNF instance
+
+ - Calls a Sequence Generator for start/stop actions which generates
+ a workflow sequence containing a set of start or stop VM requests
+
+ - Auto-generates a workflow for other requests with a single step
+
+ - Executes each step in the workflow by invoking DG’s to interact
+ with the VNF, OpenStack, or Ansible/Chef servers. These DG’s which
+ are specific to the protocol and possibly action. Some DG’s may
+ update A&AI (such as for Configure) or retrieve the VNF running
+ configuration.
+
+ - Returns success/failure status to the Dispatcher.
+
+In the future, all action/VNF type specific DG’s will be migrated to the
+DGOrchestrator approach.
+
+The following diagram shows the Amsterdam Release DGOrchestrator
+architecture
+
+ |image6|
+
+Westbound Layer
+~~~~~~~~~~~~~~~
+
+A&AI
+^^^^
+
+ A&AI is an ONAP component, which maintains information about VNF
+ instances. APPC uses A&AI as a source of the true VNF status,
+ topology and operational data. In addition, at the end of each
+ operation, APPC updates the VNF changes that result from the
+ operation: for example, VNFC record(s) are added after
+ configuration. The VNF orchestration status is not updated for
+ read-only operations such as Sync or Audit. In the case of the VNF
+ Terminate operation, APPC removes the terminated VNF from A&AI by
+ deleting its Virtual Machines (VMs). 
+
+ The Dispatching function and operation-specific DGs manage access to
+ the A&AI using the A&AI Adapter.  
+
+Southbound Layer
+~~~~~~~~~~~~~~~~
+
+Southbound VNF Adapters
+^^^^^^^^^^^^^^^^^^^^^^^
+
+ APPC uses several adapters to communicate with VNFs. The Interface
+ as a Service (IAAS) adapter is part of the OpenDayLight (ODL)
+ platform, while other adapters have been added by the ONAP
+ development.
+
+Restconf Adapter
+^^^^^^^^^^^^^^^^^
+
+ The Adapter is responsible for configuration tasks, using JSON
+ format, for VNFs supporting Restconf API.
+
+Netconf Adapter
+^^^^^^^^^^^^^^^
+
+ The Adapter is responsible for configuration tasks, using XML
+ format, for VNFs supporting Netconf API.
+
+IAAS Adapter 
+^^^^^^^^^^^^^
+
+ The IAAS Adapter connects APPC with the OpenStack controllers to
+ perform various operations on VMs and VNFs such as Restart, Migrate,
+ and Rebuild. The IAAS Adapter integrates as a DG plugin, while the
+ DGs call the services exposed by the adapter.
+
+SSH (XML/CLI) Adapter
+^^^^^^^^^^^^^^^^^^^^^
+
+ A custom adapter that enables connection to a VNF using an SSH
+ session. It is designed to support CLI and XML protocols, including
+ Netconf. It is used to load configurations and retrieve the running
+ configuration.
+
+Chef Adaptor
+^^^^^^^^^^^^
+
+ This adaptor incorporates a client for an external Chef server,
+ which connects to VNF NB APIs. The adaptor enables APPC to operate
+ cookbooks (Chef recipes) to perform various LCM operations over
+ VNFs, connected to the Chef server.
+
+Ansible Adapter
+^^^^^^^^^^^^^^^
+
+ This adaptor incorporates a client for an external Ansible server,
+ which connects to VNF NB APIs. The adaptor enables APPC to operate
+ playbooks to perform various LCM operations over VNFs connected to
+ the Ansible server.
+
+Cross Cutting Components
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+The Cross Cutting Component services operate across all APPC modules.
+
+Configuration
+^^^^^^^^^^^^^
+
+Used to configure operational parameters of APPC modules based on
+function-specific configuration files, for example:
+
+- ``log4j.properties`` for the logging service
+
+- ``appc.properties`` for core APPC-related configuration
+
+- ``dblib.properties`` for managing APPC database-related configuration
+
+- ``aaiclient.properties`` for managing A&AI-related configuration
+
+KPI Service
+^^^^^^^^^^^
+
+This Cross Cutting component manages KPI measurement, storage and
+reporting.
+
+Enable matrix logs to log the number of hits of the configured method of
+APPC, by configuring the following properties in ``appc.properties:``::
+
+ metric.enabled=<true>
+ schedule.policy.metric.start.time=<time value in hhmmss>
+ schedule.policy.metric.period = 60(interval in seconds)
+
+Security Service
+^^^^^^^^^^^^^^^^
+
+This component implements AAF (Authentication and Authorization
+Framework) for APPC API security. The user provides a user name and
+password in the request that will be validated against centralize AAF.
+[Note: For Amsterdam Releasse, AAF is not used]
+
+Logging Service
+^^^^^^^^^^^^^^^
+
+Implements EELF (Event and Error Logging Framework) to manage and
+generate logs (refer to Logging section).
+
+Data Access Service
+^^^^^^^^^^^^^^^^^^^
+
+Provides access to the internal data store.
+
+Transactions store
+~~~~~~~~~~~~~~~~~~
+
+For each operation request procedure that completes or terminates,
+APPC generates and stores an accurate transaction record in its
+internal database, including:
+
+- Timestamp
+
+- Request ID
+
+- Start time
+
+- End time
+
+- VF\_ID
+
+- VF\_type
+
+- Sub-component (optional) e.g. VFC\_ID/VM UUID
+
+- Operation: for example Start, Configure, etc.
+
+- Result: Success/Error code and description, as published to the
+ initiator
+
+Interfaces Summary
+~~~~~~~~~~~~~~~~~~
+
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| **Source** | **Flow** | **Destination** | **Service** | **Port** | **Purpose / Comments** |
++===================+============+=========================+===================+=============+============================================================================================================================================================================+
+| APPC | -> | A&AI | REST | 8443 | APPC retrieves and updates the VNF data in AAI. |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | SLI | Java (internal) | N/A | APPC sends the LCM API request to SLI for DG execution |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | South-bound Adapters | Java (internal) | N/A | APPC interacts  with southbound adapters for VNF Lifecycle Management Actions |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | NETCONF | NETCONF | 830 or 22 | NETCONF Adapter communicates on port 830 (default) or port 22 (SSH – if set up) |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | Chef Server | HTTP/HTTPS | 80/443 | Chef adapter communicate on port 80 (HTTP) or port 443 (HTTPS) |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | Ansible Server | HTTP | 8000 | Port 8000 is used for communication between the APPC Ansible Adaptor and the Ansible Server. |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | MySQL | Java (internal) | 3306 | |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | DG Builder | Java (internal) | 3000 | |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | MD-SAL, Apidoc, Karaf | Java (internal) | 8282 | |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | DMaaP | JMS | 3904 | APPC sends the Asynchronous responses and Failure events to DMaaP Message Bus |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| Portal,SO, DCAE | -> | APPC | REST/DMaaP | 3904 | APPC receives LCM commands from and makes updates to ONAP components such as the Portal, MSO, and DCAE |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| SDC | -> | APPC | DMaaP | 3904 | APPC requests and receives notifications from SDC for VNF License Artifacts and TOSCA dependency models. |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| APPC | -> | DCAE | DMaaP | 3904 | APPC sends intermediate messages to DCAE. Long-running operations such as Start, Restart, Stop, and Terminate generate intermediate success/failure messages per VNFC. |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| OOM | -> | APPC | DMaaP | 3904 | APPC receives operational commands: Start, Graceful Stop. |
+| | | | | | APPC reports: status, KPIs. |
++-------------------+------------+-------------------------+-------------------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+
+APPC Deployment
+================
+
+Refer to the APPC Deployment documentation at
+http://onap.readthedocs.io/en/latest/submodules/appc/deployment.git/docs/index.html
+
+Application Controller VNF Onboarding
+=====================================
+
+LCM Command Execution Overview
+------------------------------
+
+The Application Controller assumes that the A&AI instance it is
+configured with contains all the information it needs about
+VNF/VNFC/VMs, otherwise any request by the user to perform an action
+on a VNF will fail. The Application Controller uses a variety of SQL
+tables in order to perform actions on a VNF, all of which are
+described in Creation of DGs
+
+DGs are created using the Direct Graph Builder - Node Red graphical
+utility for DGs creation. DGs are then stored as XML files and loaded to
+APPC MySQL database. The DGs invoke the execution of Java code from
+different nodes.
+
+DGs are resolved according to LCM Action, API version, VNF Type, and VNF
+Version.
+
+The SLI framework is responsible for executing the DGs.
+
+Data Setup.
+~~~~~~~~~~~~
+
+Initially, Application Controller should have a set of DGs designed
+for the specific VNF type. These DGs are stored in the SVC\_LOGIC
+table.
+
+After a user sends an action request to the controller, the
+Application Controller uses the VNF\_DG\_MAPPING table to map the
+requested action to a specific DG. If the mapping was successful,
+the input body is validated and the user receives a synchronous
+response containing an Accept or a Reject message to indicate
+whether the request was rejected or whether it was accepted and the
+controller initiated the DG flow.
+
+During the execution of a DG, the controller may use one or more SQL
+tables to fetch or store data. For example, in order to perform a
+ConfigModify action, the controller needs to fetch a username and
+password to connect to the VNF and change its configuration.
+
+ALL tables used during DG execution are described below.
+
+Request execution
+-----------------
+
+Following initial request validation, APPC queries the A&AI inventory to
+acquire all the required information regarding topology of VNF/VNFC/VMs,
+operational status and operational data of the requested VNF instance. A
+missing target VF instance or any missing mandatory parameter in A&AI
+generate a rejection.
+
+After acquiring the VNF type from A&AI, APPC uses the VNF\_DG\_MAPPING
+table to map the requested action to a specific DG. No such DG located
+in the table generates a Reject response to the user.
+
+The Dispatcher state machine applies operation policies. A policy
+allowing execution generates an Accept response to the user. Not
+allowing execution generates a Reject response.
+
+If the first two steps were successful, the controller initiates the
+appropriate DG.
+
+During the execution of a DG, the controller may use one or more SQL
+tables to fetch or store data. For example, to perform a ConfigModify
+action, the controller needs to fetch a username and password to connect
+to the VNF and change its configuration.
+
+`Data Setup <#_Data_Setup>`__ describes the tables used during DG
+execution.
+
+If APPC is forced stopped while it is executing an LCM request, it might
+take some time to terminate all the threads that are being executed. In
+addition, the old threads might start to execute again once the APPC is
+restarted. The time when these treads start to execute again even after
+an APPC restart is dependent on the LCM request executed by the threads
+in the LCM queue and the ThreadPool size. To avoid this, it is
+recommended that:
+
+- Start APPC only after a while to ensure that the interrupted threads
+ are not executed again.
+
+- Do not execute the OAM-Forceful Stop command if the system is
+ executing an LCM request. Let the system operate in Maintenance mode.
+
+ 1. .. rubric:: Creation of DGs
+ :name: creation-of-dgs
+
+DGs are created using the Direct Graph Builder - Node Red graphical
+utility for DGs creation. DGs are then stored as XML files and loaded to
+APPC MySQL database. The DGs invoke the execution of Java code from
+different nodes.
+
+At runtime, DGs are resolved according to LCM Action, API version, VNF
+Type, and VNF Version.
+
+The SLI framework is responsible for executing the DGs.
+
+Data Setup
+----------
+
+APPC uses MySQL database as a persistent store. This section describes
+the tables in general and the tables that require data to be set up
+before sending a request.
+
+SVC\_LOGIC Table
+~~~~~~~~~~~~~~~~
+
+SVC\_LOGIC table stores all NodeRed DGs invoked by actions executed by
+APPC. The SLI framework uses this table for running the DG. If the DG
+does not exist in this table, the SLI framework returns a 'DG not found'
+error.
+
+SVC\_LOGIC Parameters
+^^^^^^^^^^^^^^^^^^^^^
+
++----------------------+----------------------+
+| **Parameter Name** | **Example Values** |
++======================+======================+
+| **module** | APPC |
++----------------------+----------------------+
+| **rpc** | Generic\_Audit |
++----------------------+----------------------+
+| **version** | 2.0.0 |
++----------------------+----------------------+
+| **mode** | sync |
++----------------------+----------------------+
+| **active** | N |
++----------------------+----------------------+
+| **graph** | <BLOB> |
++----------------------+----------------------+
+
+**module, rpc, version**
+
+The ``module``, ``rpc``, and ``version`` parameters uniquely identify a Directed
+Graph (DG). The SLI framework uses these three parameters to invoke a DG
+or sub-DG. By convention, for the main DG, rpc is a combination of 'VNF
+type' (the generic type applied to all VNFs) followed by '\_' and
+'action'. This is the default convention; resolution of the DG for
+specific actions is handled individually in the relevant forthcoming
+sections.
+
+**mode**
+
+The DG execution node. This value is set to ‘sync’ for all APPC DGs.
+
+**active**
+
+This flag is the value of either 'Y' or 'N'. This flag is only used if
+specific version of DG is not mentioned while calling DG. If version of
+DG is not mentioned SLI framework will look for DG with active Flag set
+to 'Y' and execute it if found.
+
+**graph**
+
+This is actual graph invoked by SLI framework. The data type is SQL
+BLOB.
+
+VNF\_DG\_MAPPING
+~~~~~~~~~~~~~~~~
+
+The VNF\_DG\_MAPPING table stores the VNF and its corresponding DG. This
+is used by the DG resolver logic of the Dispatcher to map the DG to the
+requested action. Only the mapping is stored; the actual DG is stored in
+the SVC\_LOGIC table.
+
+The DG resolver logic uses a combination of action, api\_version and
+vnf\_type to retrieve the DG details: dg\_name (rpc column of SVC\_LOGIC
+table), dg\_version and dg\_module.
+
+The module, rpc and version uniquely identify the DG.
+
+The following assigned priority resolves the VNF DG:
+
+1. ``action``
+
+2. ``api_version``
+
+3. ``vnf_type``
+
+4. ``vnf_version``
+
+Blank, null or ‘\*’ values in ``api_version``, ``vnf_type`` and ``vnf_version``
+are matched with any values by the DG resolver. For example, a generic
+DG which can be invoked on any type of VNF ``vnf_type`` can be blank /
+null or \*. The DG resolver logic first tries to match a specific DG,
+and if this is not found, then look for a generic match using ‘\*’. For
+example as illustrated in the Example values in below table, an entry
+for the Test action and vnf\_type VSBG is specific, so it is only used
+for VNFs of type VSBG, whereas for the Sync action the same DG is used
+for any type of VNF and any version.
+
+VNF\_DG\_MAPPING Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++----------------------+----------------------+-----------------+
+| **Parameter Name** | **Example Values** |
++======================+======================+=================+
+| **action** | Test | Sync |
++----------------------+----------------------+-----------------+
+| **api\_verson** | 2 | |
++----------------------+----------------------+-----------------+
+| **vnf\_type** | vSBG | |
++----------------------+----------------------+-----------------+
+| **vnf\_version** | | |
++----------------------+----------------------+-----------------+
+| **dg\_name** | vSBG\_Test | Generic\_Sync |
++----------------------+----------------------+-----------------+
+| **dg\_version** | 2.0.0.1 | 2.0.0 |
++----------------------+----------------------+-----------------+
+| **dg\_module** | APPC | APPC |
++----------------------+----------------------+-----------------+
+
+VNFC\_DG\_MAPPING
+~~~~~~~~~~~~~~~~~
+
+VNFC\_DG\_MAPPING stores the VNFC and its corresponding DG. The DG
+resolver logic of the Dispatcher uses this to map the DG to the
+requested action. Only the mapping is stored; the actual DG is stored in
+the SVC\_LOGIC table.
+
+The DG resolver logic uses a combination of ``action``, ``api_version``,
+``vnf_type``, and ``vnfc_type`` to retrieve the DG details: ``dg_name`` (rpc
+column of SVC\_LOGIC table), ``dg_version``, and ``dg_module``.
+
+The module, rpc and version uniquely identify the DG.
+
+The following assigned priority resolves the VNF DG:
+
+1. ``action``
+
+2. ``api_version``
+
+3. ``vnf_type``
+
+4. ``vnfc_type``
+
+The DG resolver matches blank, null or ‘\*’ values in ``api_version`` ,
+``vnf_type`` and ``vnfc_type`` with any values. For example, a generic DG
+which can be invoked on any type of VNFC 'vnfc\_type' can be blank /
+null or \*. The DG resolver logic first tries to match a specific DG. If
+this is not found, the DG resolver looks for a generic match using ‘\*’.
+
+VNFC\_DG\_MAPPING parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++----------------------+---------------------+
+| **Parameter Name** | **Example Value** |
++======================+=====================+
+| **action** | |
++----------------------+---------------------+
+| **api\_version** | |
++----------------------+---------------------+
+| **vnf\_type** | |
++----------------------+---------------------+
+| **vnfc\_type** | |
++----------------------+---------------------+
+| **dg\_name** | |
++----------------------+---------------------+
+| **dg\_version** | |
++----------------------+---------------------+
+| **dg\_module** | |
++----------------------+---------------------+
+
+DEVICE\_AUTHENTICATION
+~~~~~~~~~~~~~~~~~~~~~~
+
+The DEVICE\_AUTHENTICATION table stores device authentication
+details. It is used by actions such as Audit and Sync which connect
+with VNFs. This table stores a record that corresponds to each VNF
+type, so ``vnf_type`` is unique.
+
+Username, password and port\_number are fields corresponding to
+``vnf_type``.
+
+DEVICE\_AUTHENTICATION Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++----------------------------------+---------------------+
+| **Parameter Name** | **Example Value** |
++==================================+=====================+
+| **device\_authentication\_id** | 41 |
++----------------------------------+---------------------+
+| **vnf\_type** | vDBE-V |
++----------------------------------+---------------------+
+| **user\_name** | root |
++----------------------------------+---------------------+
+| **password** | <password> |
++----------------------------------+---------------------+
+| **port\_number** | 22 |
++----------------------------------+---------------------+
+
+VNF\_LOCK\_MANAGEMENT
+~~~~~~~~~~~~~~~~~~~~~
+
+The VNF\_LOCK\_MANAGEMENT table is used to persist data for vnf
+locking. APPC locks the vnf id when actions start executing on that
+vnf id. This table stores vnf\_id i.e. resource\_id  along with
+owner , expiration\_time or timeout. Before execution of request,
+the dispatcher checks if VNF\_ID is already locked by another action
+in execution. If VNF\_ID is not locked, the dispatcher will locks it
+or else returns a VNF locked error to caller.
+
+VNF\_LOCK\_MANAGEMENT Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++----------------------+---------------------+
+| **Parameter Name** | **Example Value** |
++======================+=====================+
+| **resource\_id** | AUDIT\_1652 |
++----------------------+---------------------+
+| **owner\_id** | vDBE-V |
++----------------------+---------------------+
+| **updated** | 1474457140000 |
++----------------------+---------------------+
+| **timeout** | 0 |
++----------------------+---------------------+
+| **ver** | 22 |
++----------------------+---------------------+
+
+This table do not require any initial setup.
+
+VNF\_STATE\_MANAGEMENT
+~~~~~~~~~~~~~~~~~~~~~~
+
+The VNF\_STATE\_MANAGEMENT table is used to store the operational state
+of VNF\_ID, whether it is stable or unstable. It stores state, owner and
+updated time (in milliseconds). This table does not require any initial
+setup.
+
+VNF\_STATE\_MANAGEMENT Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++----------------------+-------------------------------------+
+| **Parameter Name** | **Example Value** |
++======================+=====================================+
+| **vnf\_if** | ASHISH\_VSBG\_VNFS\_1787 |
++----------------------+-------------------------------------+
+| **state** | STABLE |
++----------------------+-------------------------------------+
+| **owner\_id** | ORIG\_1787@REQ\_1787@SUBREQ\_1787 |
++----------------------+-------------------------------------+
+| **updated** | 1474457140000 |
++----------------------+-------------------------------------+
+| **timeout** | 0 |
++----------------------+-------------------------------------+
+| **ver** | 22 |
++----------------------+-------------------------------------+
+
+UPLOAD\_CONFIG
+~~~~~~~~~~~~~~
+
+The UPLOAD\_CONFIG table is used by configuration management actions
+such as Audit, Sync, ConfigModify, Terminate, and similar. It stores
+device configuration: one row or record corresponds to one VNFC, so
+therefore a VNF that has multiple VNFCs has multiple rows in the
+table.
+
+The UPLOAD\_CONFIG table stores configuration as the following
+types:
+
+- ``Current``
+
+- ``Running``
+
+- ``Historic``
+
+The ``config_indicator`` column denotes the type of configuration,
+where a null value denotes ``Historic`` configuration. For a single VNFC
+there should only be one ``Current`` and one ``Running`` configuration , but
+there can be multiple Historic configurations. This table does not
+require any initial setup.
+
+UPLOAD\_CONFIG Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
++----------------------------+-------------------------+-------------------------+
+| **Parameter Name** | **Example Values** |
++============================+=========================+=========================+
+| **upload\_config\_id** | 63 | 67 |
++----------------------------+-------------------------+-------------------------+
+| **request\_id** | 3 | REQ\_1690 |
++----------------------------+-------------------------+-------------------------+
+| **originator\_id** | 12345 | ORIG\_1690 |
++----------------------------+-------------------------+-------------------------+
+| **service\_description** | abcde | abcde |
++----------------------------+-------------------------+-------------------------+
+| **action** | ConfigModify | Sync |
++----------------------------+-------------------------+-------------------------+
+| **upload\_date** | 2016-08-01 14:30:40 | 2016-09-22 12:30:40 |
++----------------------------+-------------------------+-------------------------+
+| **vnf\_id** | AUDIT\_1767 | AUDIT\_1690 |
++----------------------------+-------------------------+-------------------------+
+| **vnf\_name** | GET\_RUN\_CONFIG\_VNF | GET\_RUN\_CONFIG\_VNF |
++----------------------------+-------------------------+-------------------------+
+| **vm\_name** | GET\_RUN\_CONFIG\_VNF | GET\_RUN\_CONFIG\_VNF |
++----------------------------+-------------------------+-------------------------+
+| **vnf\_type** | vDBE-V | vDBE-V |
++----------------------------+-------------------------+-------------------------+
+| **vnfc\_type** | vDBE-V2 | vDBE-V1 |
++----------------------------+-------------------------+-------------------------+
+| **host\_ip\_address** | 135.25.69.37 | |
++----------------------------+-------------------------+-------------------------+
+| **config\_indicator** | Current | Running |
++----------------------------+-------------------------+-------------------------+
+| **pending\_delete** | | |
++----------------------------+-------------------------+-------------------------+
+| **content** | Dummy\_current | <Configuration> |
++----------------------------+-------------------------+-------------------------+
+
+DEVICE\_INTERFACE\_PROTOCOL
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The DEVICE\_INTERFACE\_PROTOCOL table stores the VNF type and
+corresponding sub-DG used to get the running configuration of a device.
+The 'getRunningConfig' DG, which is a sub-DG called by Audit and Sync
+DG, uses this table. It stores the VNF type and corresponding sub-DG,
+which are used to get the running configuration of a device. The ``module``
+and ``DG_RPC`` are used to identify the DG from the SVC\_LOGIC table. The
+``protocol`` is used to store the protocol defined for retrieving
+configuration. If a mapping between the VNF type and the DG does not
+exist in this table, then actions such as Audit and Sync fail with the
+error message 'Device Interfacing DG not available'.
+
+DEVICE\_INTERFACE\_PROTOCOL Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++---------------------------------------+--------------------------+
+| **Parameter Name** | **Example Value** |
++=======================================+==========================+
+| **device\_interface\_protocol\_id** | 4 |
++---------------------------------------+--------------------------+
+| **vnf\_type** | vDBE-V |
++---------------------------------------+--------------------------+
+| **protocol** | NETCONF-XML |
++---------------------------------------+--------------------------+
+| **module** | APPC |
++---------------------------------------+--------------------------+
+| **dg\_rpc** | getDeviceRunningConfig |
++---------------------------------------+--------------------------+
+
+CONFIG FILES
+~~~~~~~~~~~~
+
+The CONFIG\_FILES table is used by the several configuration DGs, using
+a legacy configuration API, to store artifacts from SDC, configuration
+data from requests, and configurations to be downloaded to VNFs.
+
+CONFIG\_FILES Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^
+
++-----------------------------+----------------------------+
+| **Parameter Name** | **Example Value** |
++=============================+============================+
+| **config\_file\_id** | 24 |
++-----------------------------+----------------------------+
+| **external\_version** | |
++-----------------------------+----------------------------+
+| **data\_source** | Configurator |
++-----------------------------+----------------------------+
+| **creation\_date** | 6/9/2016 11:16:57 AM |
++-----------------------------+----------------------------+
+| **service\_instance\_id** | ibcx0001vm001 |
++-----------------------------+----------------------------+
+| **vnf\_type** | ISBC |
++-----------------------------+----------------------------+
+| **vnfc\_type** | vISBC - mmc |
++-----------------------------+----------------------------+
+| **file\_category** | device\_configuration |
++-----------------------------+----------------------------+
+| **file\_name** | orch\_config.json |
++-----------------------------+----------------------------+
+| **file\_content** | (contains configuration) |
++-----------------------------+----------------------------+
+
+GET\_CONFIG\_TEMPLATE
+~~~~~~~~~~~~~~~~~~~~~
+
+The GET\_CONFIG\_TEMPLATE table is used by the 'getDeviceRunningConfig'
+DG, which is used as a sub-DG for the Audit and Sync actions. It stores
+template data corresponding to the VNF type. Template data is only used
+when the protocol in DEVICE\_INTERFACING\_PROTOCOL table is set to
+'CLI'. Other protocols do not use this table. If Data does not exist in
+this table and protocol is set to 'CLI' then DG results in 'Error
+getting Template Data'.
+
+GET\_CONFIG\_TEMPLATE Parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++---------------------------------------+-----------------------------------------+
+| **Parameter Name** | **Example Value** |
++=======================================+=========================================+
+| **get\_config\_template\_id** | 1 |
++---------------------------------------+-----------------------------------------+
+| **vnf\_type** | Generic |
++---------------------------------------+-----------------------------------------+
+| **device\_interface\_protocol\_id** | 3 |
++---------------------------------------+-----------------------------------------+
+| **xml\_processing** | |
++---------------------------------------+-----------------------------------------+
+| **xml\_protocol** | |
++---------------------------------------+-----------------------------------------+
+| **template** | Login\_Prompt: Matches "Login as:"... |
++---------------------------------------+-----------------------------------------+
+
+ASDC\_ARTIFACTS
+~~~~~~~~~~~~~~~
+
+The ASDC\_ARTIFACTS table contains the model received from the SDC in
+YAML format. APP-C reads this model and identifies the order of the
+VNFCs and their resilience types.
+
+ASDC\_ARTIFACTS parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
++--------------------------------+------------------------+
+| **Parameter Name** | **Example Value** |
++================================+========================+
+| **asdc\_artifacts\_id** | 1 |
++--------------------------------+------------------------+
+| **service\_uuid** | Service-uuid |
++--------------------------------+------------------------+
+| **distribution\_id** | Distribution-ID |
++--------------------------------+------------------------+
+| **service\_name** | Test |
++--------------------------------+------------------------+
+| **service\_description** | Test |
++--------------------------------+------------------------+
+| **resource\_uuid** | Resource-uuid |
++--------------------------------+------------------------+
+| **resource\_instance\_name** | vSCP |
++--------------------------------+------------------------+
+| **resource\_name** | vSCP |
++--------------------------------+------------------------+
+| **resource\_version** | 1.0 |
++--------------------------------+------------------------+
+| **resource\_type** | VF |
++--------------------------------+------------------------+
+| **artifact\_uuid** | Artifact-uuid |
++--------------------------------+------------------------+
+| **artifact\_type** | TOPOLOGY |
++--------------------------------+------------------------+
+| **artifact\_version** | 1 |
++--------------------------------+------------------------+
+| **artifact\_description** | VNF Dependency Model |
++--------------------------------+------------------------+
+| **internal\_version** | 0 |
++--------------------------------+------------------------+
+| **creation\_date** | 2016-11-17 10:10:18 |
++--------------------------------+------------------------+
+| **artifact\_name** | Scp-template.yml |
++--------------------------------+------------------------+
+| **artifact\_content** | <Content> |
++--------------------------------+------------------------+
+
+Sequence Generator API
+======================
+
+The Sequence Generator API generates the steps of execution for LCM
+operations at minute-level. This API is exposed using the following
+two endpoints:
+
+- DG plug-in
+
+- REST API
+
+The Sequence Generator API takes an input file in JSON format and,
+based on the parameters defined in the input file, generates an
+output file.
+
+This chapter comprises the following topics:
+
+- Sample input file
+
+- Sample output file
+
+- Supported actions
+
+ The input file comprises:
+
+- Request information
+
+- Inventory information
+
+All these sections of the input file and the parameters used are
+explained in the subsequent sections.
+
+Sample Input File
+-----------------
+
+::
+
+ {
+ "request-info": {
+ "action": "Stop",
+ "action-level": "vm",
+ "action-identifier": {
+ "vnf-id": "abc"
+ },
+ "payload": " {\"vnf-host-ip-address\": \"10.147.124.163\" }"
+ },
+ "inventory-info": {
+ "vnf-info": {
+ "vnf-id" : "abc",
+ "vnf-name": "vSCP",
+ "vnf-type": "vSCP",
+ "vnf-version" : "1.0",
+ "vm": [
+ {
+ "vserver-id" : "be_vserverid1",
+ "vnfc":
+ {
+ "vnfc-type": "BE",
+ "vnfc-name": "BE - Name"
+ }
+ },
+ {
+ "vserver-id" : "fe_vserverid1",
+ "vnfc":
+ {
+ "vnfc-type": "FE",
+ "vnfc-name": "FE - Name"
+ }
+ },
+ {
+ "vserver-id" : "smp_vserverid1",
+ "vnfc":
+ {
+ "vnfc-type": "SMP",
+ "vnfc-name": "SMP - Name"
+ }
+ }
+ ]
+ }
+ }
+ }
+
+
+Parameters
+~~~~~~~~~~
+
+This section explains the parameters used in the Sequence Generator
+API input file.
+
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| **Parameter name** | **Description** | **Possible values** | **Required?** |
++=============================+===============================================================================================================================================================================+=======================================+=================+
+| **Request Information** |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| action | The action to be executed by Sequence Generator API. | Start,Stop | Y |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| action-level | Represents the level for the action such as, vm, vnfc. | Vnf,vnfc,vm,vf-module | Y |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| action-identifier | A block containing the action arguments. These are used to specify the object upon which Sequence Generator API operates. At least one action-identifier must be specified. | Vnf-id | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnf-id | Identifies the VNF instance to which this action is to be applied. vnf-id uniquely identifies the service-instance. | String | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| payload | An action-specific open-format field. The payload can be any valid JSON string value. | AICIdentity and vnf-host-ip-address | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| **Inventory Information** |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnfInfo | Represents the VNF information to which this action is to be applied. | String | Y |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnf-id | Identifies the VNF instance to which this action is to be applied. vnf-id uniquely identifies the service-instance. | String | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnf-name | Identifies the VNF instance to which this action is to be applied. | vSCP | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnf-type | Represents the type of the VNF instance. | vSCP | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnf-version | Represents the version of the VNF instance. | Alphanumeric | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vm | Represents the VM information to which this action is to be applied. | List of VMs | Y |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vserver-id | Identifies a specific VM instance to which this action is to be applied. | Alpha-numeric unique ID | Y |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnfc | Represents the VNFC information to which this action is to be applied. | vnfc-type, vnfc-name | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnfc-type | Represents the type of the VNFC instance. | FE,BE,SMP | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+| vnfc-name | Identifies the VNFC instance to which this action is to be applied. | FE-Name, BE-Name, SMP-Name | N |
++-----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------+-----------------+
+
+Sample Output file
+------------------
+
+::
+
+ [{
+ "transactionId": 1,
+ "action": "Stop",
+ "action-level": "vm",
+ "action-identifier": {
+ "vserver-id": "be_vserverid1"
+ },
+ "payload": " {\"vnf-host-ip-address\": \"10.147.124.163\" }",
+ "responses": [{
+ "response-message": "failure",
+ "response-action": {
+ "ignore": "true"
+ }
+ }]
+ },
+ {
+ "transactionId": 2,
+ "action": "Stop",
+ "action-level": "vm",
+ "action-identifier": {
+ "vserver-id": "fe_vserverid1"
+ },
+ "payload": " {\"vnf-host-ip-address\": \"10.147.124.163\" }",
+ "responses": [{
+ "response-message": "failure",
+ "response-action": {
+ "ignore": "true"
+ }
+ }]
+ },
+ {
+ "transactionId": 3,
+ "action": "Stop",
+ "action-level": "vm",
+ "action-identifier": {
+ "vserver-id": "smp_vserverid1"
+ },
+ "payload": " {\"vnf-host-ip-address\": \"10.147.124.163\" }",
+ "responses": [{
+ "response-message": "failure",
+ "response-action": {
+ "ignore": "true"
+ }
+ }]
+ }
+ ]
+
+
+Supported Actions
+-----------------
+
+The following actions are supported for the Sequence Generator API
+for this release:
+
+- Generate Runtime Sequence Flow for Start Action with no dependency
+ model
+
+- Generate Runtime Sequence Flow for Stop Action with no dependency
+ model
+
+.. |image0| image:: media/AppCDeployment.png
+ :width: 6.50000in
+ :height: 2.55903in
+.. |image1| image:: media/AppCApidoxExplorer.png
+ :width: 6.50000in
+ :height: 4.83611in
+.. |image2| image:: media/AppCApidoxExplorer2.png
+ :width: 6.50000in
+ :height: 5.50139in
+.. |image3| image:: media/AppCApidoxExplorer3.png
+ :width: 6.50000in
+ :height: 5.65347in
+.. |image4| image:: media/AppCApidoxExplorer4.png
+ :width: 6.50000in
+ :height: 6.62292in
+.. |image5| image:: media/AppCArchitectureDiagram.png
+ :width: 6.50000in
+ :height: 3.40347in
+.. |image6| image:: media/AppCDGOrchestratorArchitecture.png
+ :width: 6.36597in
+ :height: 3.72903in