This page describes how to get the Istanbul release version of A1-Policy functions up and running locally with two separate near-RT-RIC A1 simulator docker containers providing OSC_2.1.0 version of A1 interface.

All four components of these Non-RT RIC function run as docker containers and communicate via a private docker network. Details of the architecture can be found from Istanbul Release page.

Project Requirements

• Java 11 (make sure that JAVA_HOME environment variable points to correct Java version)

• Maven 3.6

• Docker and docker-compose (latest)

Build Code

• Note 1: While instructions to build the artifacts are included below, pre-built versions are available as Docker Images in http://nexus3.onap.org
• Note 2: Before attempting to retrieve or build any ONAP component please follow the instructions for Setting Up Your Development Environment 

Build A1 Policy Management Service container

• Download the ccsdk/oran repo, Istanbul branch: 

  $ git clone "https://gerrit.onap.org/r/ccsdk/oran" -b istanbul

Configure the A1 Policy Management Service

To support local test with two separate near-RT-RIC simulator instances:  

• Copy the file oran/a1-policy-management/config/application_configuration.json  to the current directory and update it with the configuration below.
  (Note the configuration below is just a sample, and should be updated to match particular deployments.  The deployment below assumes 4 near-RT-RICs exist - addressable at the urls given.)

• The controller hostname and port values come from and must match those defined in in the sdnc/oam repo oam/installation/src/main/yaml/docker-compose.yml (see the step "Build A1 Controller" further below). The port for http is 8181.
  (Note the configuration below is just a sample, and should be updated to match particular deployments.  The deployment below assumes anA1 Conrolelr fucntion (SDNC) existd - addressable at the url given, using the authentication credentials given.)

• Any defined ric host names (in the name and baseUrl for each ric) must match the given docker container names in near-RT-RIC simulator startup - port is always the simulator's internal port 8085 for http or 8185 for https (see the step "Build A1 Controller" further below).

• It is optional to access the near-RT-RIC through a controller. The "controller" property is optional in the "ric" objects. If no controller is used, the whole "controller" object can be omitted.
  There is no functional gain in accessing the near-RT-RIC through a controller.

{
  "description": "Application configuration",
  "config": {    
    "controller": [
      {
        "name": "controller1",
        "baseUrl": "http://sdnc_controller:8181",
        "userName": "admin",
        "password": "Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U"
      }
    ],
    "ric": [
      {
        "name": "ric1",
        "baseUrl": "http://ric1:8085/", 
        "managedElementIds": [
        ]
      },
      {
        "name": "ric2",
        "baseUrl": "http://ric2:8085/",       
        "managedElementIds": [
          "kista_3",
          "kista_4"
        ]
      },
       {
        "name": "ric3",
        "baseUrl": "http://ric3:8085/",
        "controller": "controller1", 
        "managedElementIds": [
          "kista_5",
          "kista_6"
        ]
      },
       {
        "name": "ric4",
        "baseUrl": "http://ric4:8085/",
        "controller": "controller1", 
        "managedElementIds": [
          "kista_7",
          "kista_8",
          "kista_9",
          "kista_10",
          "kista_11"
         ]
      }
    ]
  }
}

JSON Schema for the application configuration

The configuration must comply to the following JSON schema. There are several tools on internet where it is possible to validate JSON against a schema. 

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "config": {
      "type": "object",
      "properties": {
        "//description": {
          "type": "string"
        },
        "description": {
          "type": "string"
        },
        "controller": {
          "type": "array",
          "items": [
            {
              "type": "object",
              "properties": {
                "name": {
                  "type": "string"
                },
                "baseUrl": {
                  "type": "string"
                },
                "userName": {
                  "type": "string"
                },
                "password": {
                  "type": "string"
                }
              },
              "required": [
                "name",
                "baseUrl",
                "userName",
                "password"
              ],
              "additionalProperties": false
            }
          ]
        },
        "ric": {
          "type": "array",
          "items": [
            {
              "type": "object",
              "properties": {
                "name": {
                  "type": "string"
                },
                "baseUrl": {
                  "type": "string"
                },
                "controller": {
                  "type": "string"
                },
                "managedElementIds": {
                  "type": "array",
                  "items": [
                    {
                      "type": "string"
                    },
                    {
                      "type": "string"
                    }
                  ]
                }
              },
              "required": [
                "name",
                "baseUrl",
                "managedElementIds"
              ],
              "additionalProperties": false
            }
          ]
        },
        "streams_publishes": {
          "type": "object",
          "properties": {
            "dmaap_publisher": {
              "type": "object",
              "properties": {
                "type": {
                  "type": "string"
                },
                "dmaap_info": {
                  "type": "object",
                  "properties": {
                    "topic_url": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "topic_url"
                  ]
                }
              },
              "required": [
                "type",
                "dmaap_info"
              ]
            }
          },
          "required": [
            "dmaap_publisher"
          ]
        },
        "streams_subscribes": {
          "type": "object",
          "properties": {
            "dmaap_subscriber": {
              "type": "object",
              "properties": {
                "type": {
                  "type": "string"
                },
                "dmaap_info": {
                  "type": "object",
                  "properties": {
                    "topic_url": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "topic_url"
                  ]
                }
              },
              "required": [
                "type",
                "dmaap_info"
              ]
            }
          },
          "required": [
            "dmaap_subscriber"
          ]
        }
      },
      "required": [
        "ric"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "config"
  ]
}

For more information on configuring the A1-Policy Management Service please see Istanbul - Component configuration

Build the code and create docker image

To build docker image of the policy management service:

$ cd oran/a1-policy-management/
$ mvn clean install -Dmaven.test.skip=true

If the build is successful an image with following name and tag shall be built, use the command 'docker images' to view the newly built image in the local docker registry.

$ docker images
onap/ccsdk-oran-a1policymanagementservice 1.2.2-SNAPSHOT

Build A1 Adapter for Controller

Build the code and create docker images

A1 Adapter is a feature developed within CCSDK which can then be installed in SDNC Karaf Server. To build & run the A1-enabled SDNC Controller, you need to build the ccsdk & sdnc repo's.

The Controller provides a Northbound Interface, to be used only by the A1 Policy Management Service, allowing it to pass messages over the A1 interface to near-RT-RICs in the RAN.

Use the downloaded repo 'ccsdk/oran' as in the previous step, "Build A1 Policy Management Service container"

$ cd a1-adapter
$ mvn clean install -Dmaven.test.skip=true

After you build the A1 adapter artifacts, download below CCSDK/SDNC repos and build them in the following order.

If the builds are successful, images with following name and tag shall exist, use the command 'docker images' to view the newly built images in the local docker registry.

$ docker images | grep onap
onap/sdnc-image latest
onap/sdnc-ansible-server-image latest
onap/admportal-sdnc-image latest
onap/ccsdk-dgbuilder-image latest
onap/sdnc-ueb-listener-image latest
onap/sdnc-dmaap-listener-image:latest

Proxy support for A1 adapter

There is the possibility to use a proxy when CCSDK SLI node function to perform REST calls southbound to near-RT-RICs. 

In order to configure proxy:

• Add proxy URL to properties file odlsli/src/main/properties/a1-adapter-api-dg.properties variable a1Mediator.proxy.url
  • This file is part of CCSDK/distribution project
  • After adding this information in the file, the distribution repo from CCSDK must be rebuild, follow by the SDNC/oam repo.
  • URL format must be protocol://host:port for example http://proxy:8443 

Running the functions

Run A1-enabled Controller

To view the A1 policy operations, you need to run the SDNC docker image. This image has few other docker image dependencies but not all are important for A1 policy testing. To bring up the sdnc container for A1 Policy Management testing a number of the not needed services can be removed from the docker compose file.

Edit the docker compose file, oam/installation/src/main/yaml/docker-compose.yaml and keep only sdnc, maria db and ansible images. The rest of the images are not necessary for A1 Policy testing. However if you want to change the DG and run your own DG, you may need to keep the Directed Graph image.

$ export MTU=1500
$ docker network create nonrtric-docker-net
$ cd oam/installation/src/main/yaml
$ docker-compose up 
$ docker network connect nonrtric-docker-net sdnc_controller (use another shell)

The SDNC image will take a while to install all the features into Karaf Server. You can check the logs of the server at /opt/opendaylight/data/log/karaf.log

Other logs that can be check is /opt/opendaylight/data/log/A1-Adapter.log to see entries coming from DG.

The A1 Policy in ODL GUI can be accessed by this URL (it may take several minutes before the URL works)

(Note these instructions create an A1 Controller deployment scenario aligned towards the sample A1 Policy configuration given above)

Run OSC Near-RT-RIC/A1 Simulator Docker Containers

• Start docker containers for each near-RT-RIC defined in oran/a1-policy-management/config/application_configuration.json in the step for "Configuration Policy Management Service" (in this example for ric1 and ric2) and providing A1 interface version OSC_2.1.0 with the following commands (use separate shells):

  $ docker run -p 8085:8085 -p 8185:8185 -e A1_VERSION=OSC_2.1.0 -e ALLOW_HTTP=true --network=nonrtric-docker-net --name=ric1 nexus3.o-ran-sc.org:10002/o-ran-sc/a1-simulator:2.1.0
  $ docker run -p 8086:8085 -p 8186:8185 -e A1_VERSION=OSC_2.1.0 -e ALLOW_HTTP=true --network=nonrtric-docker-net --name=ric2 nexus3.o-ran-sc.org:10002/o-ran-sc/a1-simulator:2.1.0
  $ docker run -p 8087:8085 -p 8187:8185 -e A1_VERSION=STD_2.0.0 -e ALLOW_HTTP=true --network=nonrtric-docker-net --name=ric3 nexus3.o-ran-sc.org:10002/o-ran-sc/a1-simulator:2.1.0
  $ docker run -p 8088:8085 -p 8188:8185 -e A1_VERSION=STD_2.0.0 -e ALLOW_HTTP=true --network=nonrtric-docker-net --name=ric4 nexus3.o-ran-sc.org:10002/o-ran-sc/a1-simulator:2.1.0

  (Note these commands create a deployment scenario aligned towards the sample A1 Policy configuration given above)
  
  

• Create a policy type json to load into the A1 simulators (running version OSC.2.1.0)

  pt1.json

  {
    "name": "pt1",
    "description": "pt1 policy type",
    "policy_type_id": 1,
    "create_schema": {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "title": "OSC_Type1_1.0.0",
      "description": "Type 1 policy type",
      "type": "object",
      "properties": {
        "scope": {
          "type": "object",
          "properties": {
            "ueId": {
              "type": "string"
            },
            "qosId": {
              "type": "string"
            }
          },
          "additionalProperties": false,
          "required": [
            "ueId",
            "qosId"
          ]
        },
        "qosObjectives": {
          "type": "object",
          "properties": {
            "priorityLevel": {
              "type": "number"
            }
          },
          "additionalProperties": false,
          "required": [
            "priorityLevel"
          ]
        }
      },
      "additionalProperties": false,
      "required": [
        "scope", "qosObjectives"
      ]
    }
  }

• Put the example policy type into the started A1 simulator instances by running these curl commands (in this example to ric1 exposed to port 8085 and ric2 exposed to port 8086):

  $ curl -X PUT -v "http://localhost:8085/a1-p/policytypes/1" -H "accept: application/json" \
   -H "Content-Type: application/json" --data-binary @pt1.json
  $ curl -X PUT -v "http://localhost:8086/a1-p/policytypes/1" -H "accept: application/json" \
   -H "Content-Type: application/json" --data-binary @pt1.json

• Create a policy type json to load into the A1 simulators (running version STD.2.0.0)

  std_qos2_0.0.1.json

  {
      "policySchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "title": "STD_QOS2_0.1.0",
        "description": "STD QOS2 policy type",
        "type": "object",
        "properties": {
          "scope": {
            "type": "object",
            "properties": {
              "ueId": {
                "type": "string"
              },
              "qosId": {
                "type": "string"
              }
            },
            "additionalProperties": false,
            "required": [
              "ueId",
              "qosId"
            ]
          },
          "qosObjectives": {
            "type": "object",
            "properties": {
              "priorityLevel": {
                "type": "number"
              }
            },
            "additionalProperties": false,
            "required": [
              "priorityLevel"
            ]
          }
        }
      },
      "statusSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "title": "STD_QOS_0.2.0",
        "description": "STD QOS policy type status",
        "type": "object",
        "properties": {
          "enforceStatus": {
            "type": "string"
          },
          "enforceReason": {
            "type": "string"
          },
          "additionalProperties": false,
          "required": [
            "enforceStatus"
          ]
        }
      }
    }

• Put the example policy type into the started A1 simulator instances by running these curl commands (in this example to ric3 exposed to port 8087 and ric4 exposed to port 8088):

  $ curl -X PUT -v "http://localhost:8087/policytype?id=STD_QOS2_0.1.0" -H "accept: application/json" \
   -H "Content-Type: application/json" --data-binary @std_qos2_0.0.1.json
  $ curl -X PUT -v "http://localhost:8088/policytype?id=STD_QOS2_0.1.0" -H "accept: application/json" \
   -H "Content-Type: application/json" --data-binary @std_qos2_0.0.1.json

For more details about running the OSC A1 Simulator see the related OSC NONRTRIC Wiki page (Release D)  

Run ONAP A1 Policy Management Service Docker Container

• Run docker container using this command once the A1-enabled Controller and simulators have been fully started and optionally set the logging level to trace (the curl command will not work until the container is fully up and running).
  The configuration, application_configuration.json, of the controller and near-RT-RICs must be mounted as a volume to the container.

  $ docker run -p 8081:8081 --network=nonrtric-docker-net --name=policy-agent-container --volume <Absolute path to application_configuration.json created above>:/opt/app/policy-agent/data/application_configuration.json onap/ccsdk-oran-a1policymanagementservice:1.2.2-SNAPSHOT

  $ curl -X POST  http://localhost:8081/actuator/loggers/org.onap.ccsdk.oran.a1policymanagementservice -H "Content-Type:application/json" -d {\"configuredLevel\":\"trace\"}

• Once the Policy Management Service is up and running, it establishes connections to all configured near-RT-RICs (ric1 and ric2) via the A1 Controller.

• If the policy-agent-container is configured to log at trace level, the following logs entries should appear indicating that connection to the configured RICs has been established successfully via A1 Controller.

$ docker logs policy-agent-container | grep "checked" 
2021-03-16 14:15:03.805 DEBUG 1 --- [or-http-epoll-5] o.o.c.o.a.tasks.RicSupervision           : Ric: ric1 checked OK
2021-03-16 14:15:03.816 DEBUG 1 --- [or-http-epoll-6] o.o.c.o.a.tasks.RicSupervision           : Ric: ric3 checked OK
2021-03-16 14:15:03.835 DEBUG 1 --- [or-http-epoll-1] o.o.c.o.a.tasks.RicSupervision           : Ric: ric2 checked OK
2021-03-16 14:15:03.851 DEBUG 1 --- [or-http-epoll-2] o.o.c.o.a.tasks.RicSupervision           : Ric: ric4 checked OK

A1 Policy Management Service Swagger API

For troubleshooting/verification purposes you can view/access the policy-agent swagger API from url: http://localhost:8081/swagger-ui.html

Run OSC Non-RT RIC Control Panel Docker Container

Control panel use two docker images, one is the Control Panel API Gateway and the NonRTRIC Control Panel.

In order to start the Control Panel API gateway, an application file is needed to specify the routes and paths accepted by the gateway and where those request are going to be redirect, so the following example can be used:

server:
  port: 9090
spring:
  cloud:
    gateway:
      httpclient:
        ssl:
          useInsecureTrustManager: true
        wiretap: true
      httpserver:
        wiretap: true
      routes:
      - id: A1-Policy
        uri: http://policy-agent-container:8081
        predicates:
        - Path=/a1-policy/**
management:
  endpoint:
    gateway:
      enabled: true
  endpoints:
    web:
      exposure:
        include: "gateway,loggers,logfile,health,info,metrics,threaddump,heapdump"
logging:
  level:
    ROOT: ERROR
    org.springframework: ERROR
    org.springframework.cloud.gateway: INFO
    reactor.netty: INFO
  file:
    name: /var/log/nonrtric-gateway/application.log

The configuration, application_nonrtricgateway.yaml must be mounted as a volume to the container.

Run docker container using this command:

$ docker run -p 9090:9090 --network=nonrtric-docker-net --name=nonrtric-gateway --volume <Absolute path to application_nonrtricgateway.yaml created above>:/opt/app/nonrtric-gateway/config/application.yaml:ro nexus3.o-ran-sc.org:10004/o-ran-sc/nonrtric-gateway:1.0.0

In order to run docker container for control panel use the following command: 

$ docker run -p 8080:8080 --network=nonrtric-docker-net nexus3.o-ran-sc.org:10002/o-ran-sc/nonrtric-controlpanel:2.2.0

Open NONRTRIC / A1 Policy Control Panel UI

The Control Panel UI can be accessed by pointing the web-browser to this URL: 

http://localhost:8080/

The A1 policy type pre-configured in the simulator should be visible (read-only) in the Control Panel display. Instances of the policy type can now be created, updated and deleted.
(Note A1 policy types can only be created or deleted directly in the near-RT-RIC (or simulators), which will then be synchronized in the A1 Policy Management Service, and can seen in the Control Panel display when refreshed. )