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authorKAPIL SINGAL <ks220y@att.com>2020-10-01 15:08:32 +0000
committerGerrit Code Review <gerrit@onap.org>2020-10-01 15:08:32 +0000
commit2e14fd04164977b0a3af1070b98d2b46d351ff0a (patch)
tree9490f986c2ceaf87ab1cfa47711e6cc3c511bf11 /docs
parent5c900497b4cfcc8efbf004a22f3f63b1e2330b2a (diff)
parent0f29c1c861538c19fd8550610ecb6cd41d16cdbc (diff)
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+.. This work is a derivative of https://wiki.onap.org/display/DW/PNF+Simulator+Day-N+config-assign+and+config-deploy+use+case
+.. This work is licensed under a Creative Commons Attribution 4.0
+.. International License. http://creativecommons.org/licenses/by/4.0
+.. Copyright (C) 2020 Deutsche Telekom AG.
+
+PNF Simulator Day-N config-assign/deploy
+========================================
+
+
+
+Overview
+~~~~~~~~~~
+
+This use case shows in a very simple way how a blueprint model of a PNF is created in CDS and how the day-n configuration is
+assigned and deployed through CDS. A Netconf server (docker image `sysrepo/sysrepo-netopeer2`) is used for simulating the PNF.
+
+This use case (POC) solely requires a running CDS and the PNF Simulator running on a VM (Ubuntu is used by the author).
+No other module of ONAP is needed.
+
+There are different ways to run CDS, to run PNF simulator and to do configuration deployment. This guide will show
+different possible options to allow the greatest possible flexibility.
+
+Run CDS (Blueprint Processor)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+CDS can be run in Kubernetes (Minikube, Microk8s) or in an IDE. You can choose your favorite option.
+Just the blueprint processor of CDS is needed. If you have desktop access it is recommended to run CDS in an IDE since
+it is easy and enables debugging.
+
+* CDS in Microk8s: https://wiki.onap.org/display/DW/Running+CDS+on+Microk8s (RDT link to be added)
+* CDS in Minikube: https://wiki.onap.org/display/DW/Running+CDS+in+minikube (RDT link to be added)
+* CDS in an IDE: https://docs.onap.org/projects/onap-ccsdk-cds/en/latest/userguide/running-bp-processor-in-ide.html
+
+After CDS is running remember the port of blueprint processor, you will need it later on.
+
+Run PNF Simulator and install module
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+There are many different ways to run a Netconf Server to simulate the PNF, in this guide `sysrepo/sysrepo-netopeer2`
+docker image is commonly used. The easiest way is to run the out-of-the-box docker container without any
+other configuration, modules or scripts. In the ONAP community there are other workflows existing for running the
+PNF Simulator. These workflows are also using `sysrepo/sysrepo-netopeer2` docker image. These workflow are also linked
+here but they are not tested by the author of this guide.
+
+.. tabs::
+
+ .. tab:: sysrepo/sysrepo-netopeer2 (latest)
+
+ .. warning::
+ Currently there is an issue for the SSH connection between CDS and the netconf server because of unmatching
+ exchange key algorhithms. Use legacy version until the issue is resolved.
+
+ Download and run docker container with ``docker run -d --name netopeer2 -p 830:830 -p 6513:6513 sysrepo/sysrepo-netopeer2:latest``
+
+ Enter the container with ``docker exec -it netopeer2 bin/bash``
+
+ Browse to the target location where all YANG modules exist: ``cd /etc/sysrepo/yang``
+
+ Create a simple mock YANG model for a packet generator (pg.yang).
+
+ .. code-block:: sh
+ :caption: **pg.yang**
+
+ module sample-plugin {
+
+ yang-version 1;
+ namespace "urn:opendaylight:params:xml:ns:yang:sample-plugin";
+ prefix "sample-plugin";
+
+ description
+ "This YANG module defines the generic configuration and
+ operational data for sample-plugin in VPP";
+
+ revision "2016-09-18" {
+ description "Initial revision of sample-plugin model";
+ }
+
+ container sample-plugin {
+
+ uses sample-plugin-params;
+ description "Configuration data of sample-plugin in Honeycomb";
+
+ // READ
+ // curl -u admin:admin http://localhost:8181/restconf/config/sample-plugin:sample-plugin
+
+ // WRITE
+ // curl http://localhost:8181/restconf/operational/sample-plugin:sample-plugin
+
+ }
+
+ grouping sample-plugin-params {
+ container pg-streams {
+ list pg-stream {
+
+ key id;
+ leaf id {
+ type string;
+ }
+
+ leaf is-enabled {
+ type boolean;
+ }
+ }
+ }
+ }
+ }
+
+ Create the following sample XML data definition for the above model (pg-data.xml).
+ Later on this will initialise one single PG stream.
+
+ .. code-block:: sh
+ :caption: **pg-data.xml**
+
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+
+ Execute the following command within netopeer docker container to install the pg.yang model
+
+ .. code-block:: sh
+
+ sysrepoctl -v3 -i pg.yang
+
+ .. note::
+ This command will just schedule the installation, it will be applied once the server is restarted.
+
+ Stop the container from outside with ``docker stop netopeer2`` and start it again with ``docker start netopeer2``
+
+ Enter the container like it's mentioned above with ``docker exec -it netopeer2 bin/bash``.
+
+ You can check all installed modules with ``sysrepoctl -l``. `sample-plugin` module should appear with ``I`` flag.
+
+ Execute the following the commands to initialise the Yang model with one pg-stream record.
+ We will be using CDS to perform the day-1 configuration and day-2 configuration changes.
+
+ .. code-block:: sh
+
+ netopeer2-cli
+ > connect --host localhost --login root
+ # passwort is root
+ > get --filter-xpath /sample-plugin:*
+ # shows existing pg-stream records (empty)
+ > edit-config --target running --config=/etc/sysrepo/yang/pg-data.xml
+ # initialises Yang model with one pg-stream record
+ > get --filter-xpath /sample-plugin:*
+ # shows initialised pg-stream
+
+ If the output of the last command is like this, everything went successful:
+
+ .. code-block:: sh
+
+ DATA
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+
+
+ .. tab:: sysrepo/sysrepo-netopeer2 (legacy)
+
+ Download and run docker container with ``docker run -d --name netopeer2 -p 830:830 -p 6513:6513 sysrepo/sysrepo-netopeer2:legacy``
+
+ Enter the container with ``docker exec -it netopeer2 bin/bash``
+
+ Browse to the target location where all YANG modules exist: ``cd /opt/dev/sysrepo/yang``
+
+ Create a simple mock YANG model for a packet generator (pg.yang).
+
+ .. code-block:: sh
+ :caption: **pg.yang**
+
+ module sample-plugin {
+
+ yang-version 1;
+ namespace "urn:opendaylight:params:xml:ns:yang:sample-plugin";
+ prefix "sample-plugin";
+
+ description
+ "This YANG module defines the generic configuration and
+ operational data for sample-plugin in VPP";
+
+ revision "2016-09-18" {
+ description "Initial revision of sample-plugin model";
+ }
+
+ container sample-plugin {
+
+ uses sample-plugin-params;
+ description "Configuration data of sample-plugin in Honeycomb";
+
+ // READ
+ // curl -u admin:admin http://localhost:8181/restconf/config/sample-plugin:sample-plugin
+
+ // WRITE
+ // curl http://localhost:8181/restconf/operational/sample-plugin:sample-plugin
+
+ }
+
+ grouping sample-plugin-params {
+ container pg-streams {
+ list pg-stream {
+
+ key id;
+ leaf id {
+ type string;
+ }
+
+ leaf is-enabled {
+ type boolean;
+ }
+ }
+ }
+ }
+ }
+
+ Create the following sample XML data definition for the above model (pg-data.xml).
+ Later on this will initialise one single PG (packet-generator) stream.
+
+ .. code-block:: sh
+ :caption: **pg-data.xml**
+
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+
+ Execute the following command within netopeer docker container to install the pg.yang model
+
+ .. code-block:: sh
+
+ sysrepoctl -i -g pg.yang
+
+ You can check all installed modules with ``sysrepoctl -l``. `sample-plugin` module should appear with ``I`` flag.
+
+ In legacy version of `sysrepo/sysrepo-netopeer2` subscribers of a module are required, otherwise they are not
+ running and configurations changes are not accepted, see https://github.com/sysrepo/sysrepo/issues/1395. There is
+ an predefined application mock up which can be used for that. The usage is described
+ `https://github.com/sysrepo/sysrepo/issues/1395 <https://asciinema.org/a/160247>`_. You need to run the following
+ commands to start the example application for subscribing to sample-plugin Yang module.
+
+ .. code-block:: sh
+
+ cd /opt/dev/sysrepo/build/examples
+ ./application_example sample-plugin
+
+ Following output should appear:
+
+ .. code-block:: sh
+
+ ========== STARTUP CONFIG sample-plugin APPLIED AS RUNNING ==========
+
+ ========== CONFIG HAS CHANGED, CURRENT RUNNING CONFIG sample-plugin: ==========
+
+ /sample-plugin:sample-plugin (container)
+ /sample-plugin:sample-plugin/pg-streams (container)
+ /sample-plugin:sample-plugin/pg-streams/pg-stream[id='1'] (list instance)
+ /sample-plugin:sample-plugin/pg-streams/pg-stream[id='1']/id = 1
+ /sample-plugin:sample-plugin/pg-streams/pg-stream[id='1']/is-enabled = true
+
+ The terminal session needs to be kept open after application has started.
+
+ Open a new terminal and enter the container with ``docker exec -it netopeer2 bin/bash``.
+ Execute the following commands in the container to initialise the Yang model with one pg-stream record.
+ We will be using CDS to perform the day-1 configuration and day-2 configuration changes.
+
+ .. code-block:: sh
+
+ netopeer2-cli
+ > connect --host localhost --login netconf
+ # passwort is netconf
+ > get --filter-xpath /sample-plugin:*
+ # shows existing pg-stream records (empty)
+ > edit-config --target running --config=/opt/dev/sysrepo/yang/pg-data.xml
+ # initialises Yang model with one pg-stream record
+ > get --filter-xpath /sample-plugin:*
+ # shows initialised pg-stream
+
+ If the output of the last command is like this, everything went successful:
+
+ .. code-block:: sh
+
+ DATA
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+
+ .. tab:: PNF simulator integration project
+
+ .. warning::
+ This method of setting up the PNF simulator is not tested by the author of this guide
+
+ You can refer to `PnP PNF Simulator wiki page <https://wiki.onap.org/display/DW/PnP+PNF+Simulator>`_
+ to clone the GIT repo and start the required docker containers. We are interested in the
+ `sysrepo/sysrepo-netopeer2` docker container to load a simple YANG similar to vFW Packet Generator.
+
+ Start PNF simulator docker containers. You can consider changing the netopeer image verion to image:
+ `sysrepo/sysrepo-netopeer2:iop` in docker-compose.yml file If you find any issues with the default image.
+
+ .. code-block:: sh
+
+ cd $HOME
+
+ git clone https://github.com/onap/integration.git
+
+ Start PNF simulator
+
+ cd ~/integration/test/mocks/pnfsimulator
+
+ ./simulator.sh start
+
+ Verify that you have netopeer docker container are up and running. It will be mapped to host port 830.
+
+ .. code-block:: sh
+
+ docker ps -a | grep netopeer
+
+
+Config-assign and config-deploy in CDS
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+In the following steps the CBA is published in CDS, config-assignment is done and the config is deployed to to the
+Netconf server through CDS in the last step. We will use this CBA: :download:`zip <pnf-simulator-demo-cba.zip>`.
+If you want to use scripts instead of Postman the CBA also contains all necessary scripts.
+
+.. tabs::
+
+ .. tab:: Scripts
+
+ **There will be different scripts depending on your CDS installation. For running it in an IDE always use scripts with**
+ **-ide.sh prefix. For running in kubernetes use the scripts with -k8s.sh ending. For IDE scripts host will be localhost**
+ **and port will be 8081. For K8s host ip adress gets automatically detected, port is 8000.**
+
+ **Set up CDS:**
+
+ Unzip the downloaded CBA and go to ``/Scripts/`` directory.
+
+ The below script will call Bootstrap API of CDS which loads the CDS default model artifacts into CDS DB.
+ You should get HTTP status 200 for the below command.
+
+ .. code-block:: sh
+
+ bash -x ./bootstrap-cds-ide.sh
+ # bash -x ./bootstrap-cds-k8s.sh
+
+ Call ``bash -x ./get-cds-blueprint-models-ide.sh`` / ``bash -x ./get-cds-blueprint-models-k8s.sh`` to get all blueprint models in the CDS database.
+ You will see a default model "artifactName": "vFW-CDS" which was loaded by calling bootstrap.
+
+ Push the PNF CDS blueprint model data dictionary to CDS by calling ``bash -x ./dd-microk8s-ide.sh ./dd.json`` /
+ ``bash -x ./dd-microk8s-k8s.sh ./dd.json``.
+ This will call the data dictionary endpoint of CDS.
+
+ Check CDS database for PNF data dictionaries by entering the DB. You should see 6 rows as shown below.
+
+ For IDE:
+
+ .. code-block:: sh
+
+ sudo docker exec -it mariadb_container_id mysql -uroot -psdnctl
+ > USE sdnctl;
+ > select name, data_type from RESOURCE_DICTIONARY where updated_by='Aarna service <vmuthukrishnan@aarnanetworks.com>';
+
+ +---------------------+-----------+
+ | name | data_type |
+ +---------------------+-----------+
+ | netconf-password | string |
+ | netconf-server-port | string |
+ | netconf-username | string |
+ | pnf-id | string |
+ | pnf-ipv4-address | string |
+ | stream-count | integer |
+ +---------------------+-----------+
+
+ For K8s:
+
+ .. code-block:: sh
+
+ ./connect-cds-mariadb-k8s.sh
+
+ select name, data_type from RESOURCE_DICTIONARY where updated_by='Aarna service <vmuthukrishnan@aarnanetworks.com>';
+
+ +---------------------+-----------+
+ | name | data_type |
+ +---------------------+-----------+
+ | netconf-password | string |
+ | netconf-server-port | string |
+ | netconf-username | string |
+ | pnf-id | string |
+ | pnf-ipv4-address | string |
+ | stream-count | integer |
+ +---------------------+-----------+
+
+ quit
+
+ exit
+
+ **Enrichment:**
+
+ Move to the main folder of the CBA with ``cd ..`` and archive all folders with ``zip -r pnf-demo.zip *``.
+
+ .. warning::
+ The provided CBA is already enriched, the following steps anyhow will enrich the CBA again to show the full workflow.
+ For Frankfurt release this causes an issue when the configuration is deployed later on. This happens because some parameters
+ get deleted when enrichment is done a second time. Skip the next steps until Deploy/Save Blueprint if you use
+ Frankfurt release and use the CBA as it is. In future this step should fixed and executed based on an unenriched CBA.
+
+ Enrich the blueprint through calling the following script. Take care to provide the zip file you downloader earlier.
+
+ .. code-block:: sh
+
+ cd Scripts
+ bash -x ./enrich-and-download-cds-blueprint-ide.sh ../pnf-demo.zip
+ # bash -x ./enrich-and-download-cds-blueprint-k8s.sh ../pnf-demo.zip
+
+ Go to the enriched CBA folder with ``cd /tmp/CBA/`` and unzip with ``unzip pnf-demo.zip``.
+
+ **Deploy/Save the Blueprint into CDS database**
+
+ Go to Scripts folder with ``cd Scripts``.
+
+ Run the following script to save/deploy the Blueprint into the CDS database.
+
+ .. code-block:: sh
+
+ bash -x ./save-enriched-blueprint-ide.sh ../pnf-demo.zip
+ # bash -x ./save-enriched-blueprint-k8s.sh ../pnf-demo.zip
+
+ Now you should see the new model "artifactName": "pnf_netconf" by calling ``bash -x ./get-cds-blueprint-models.sh``
+
+ **Config-Assign**
+
+ The assumption is that we are using the same host to run PNF NETCONF simulator as well as CDS. You will need the
+ IP Adress of the Netconf server container which can be found out with
+ ``docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_id_or_name``. In the
+ following examples we will use 172.17.0.2.
+
+ Day-1 configuration:
+
+ .. code-block:: sh
+
+ bash -x ./create-config-assing-data-ide.sh day-1 172.17.0.2 5
+ # bash -x ./create-config-assing-data-k8s.sh day-1 172.17.0.2 5
+
+ You can verify the day-1 NETCONF RPC payload looking into CDS DB. You should see the NETCONF RPC with 5
+ streams (fw_udp_1 TO fw_udp_5). Connect to the DB like mentioned above an run following statement.
+
+ .. code-block:: sh
+
+ MariaDB [sdnctl]> select * from TEMPLATE_RESOLUTION where resolution_key='day-1' AND artifact_name='netconfrpc';
+
+ <rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
+ <edit-config>
+ <target>
+ <running/>
+ </target>
+ <config>
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>fw_udp_1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_2</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_3</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_4</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_5</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+ </config>
+ </edit-config>
+ </rpc>
+
+ Create PNF configuration for resolution-key = day-2 (stream-count = 10).
+ You can verify the CURL command JSON pay load file /tmp/day-n-pnf-config.json
+
+ .. code-block:: sh
+
+ bash -x ./create-config-assing-data-ide.sh day-2 172.17.0.2 10
+ # bash -x ./create-config-assing-data-k8s.sh day-2 172.17.0.2 10
+
+ You can verify the day-2 NETCONF RPC payload looking into CDS DB. You should see the NETCONF RPC with 10
+ streams (fw_udp_1 TO fw_udp_10). Connect to the DB like mentioned above and run following statement.
+
+ .. code-block:: sh
+
+ MariaDB [sdnctl]> select * from TEMPLATE_RESOLUTION where resolution_key='day-2' AND artifact_name='netconfrpc';
+
+ <rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
+ <edit-config>
+ <target>
+ <running/>
+ </target>
+ <config>
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>fw_udp_1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_2</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_3</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_4</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_5</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_6</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_7</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_8</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_9</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_10</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+ </config>
+ </edit-config>
+ </rpc>
+
+ .. note::
+ Till this point CDS did not interact with the PNF simulator or device. We just created the day-1 and day-2
+ configurations and stored in CDS database
+
+ **Config-Deploy:**
+
+ Now we will make the CDS REST API calls to push the day-1 and day-2 configuration changes to the PNF simulator.
+
+ If you run CDS in Kubernetes open a new terminal and keep it running with ``bash -x ./tail-cds-bp-log.sh``,
+ we can use it to review the config-deploy actions. If you run CDS in an IDE you can have a look into the IDE terminal.
+
+ Following command will deploy day-1 configuration.
+ Syntax is ``# bash -x ./process-config-deploy.sh RESOLUTION_KEY PNF_IP_ADDRESS``
+
+ .. code-block:: sh
+
+ bash -x ./process-config-deploy-ide.sh day-1 127.17.0.2
+ # bash -x ./process-config-deploy-k8s.sh day-1 127.17.0.2
+
+ Go back to PNF netopeer cli console and verify if you can see 5 streams fw_udp_1 to fw_udp_5 enabled
+
+ .. code-block:: sh
+
+ > get --filter-xpath /sample-plugin:*
+ DATA
+ <sample-plugin xmlns="urn:opendaylight:params:xml:ns:yang:sample-plugin">
+ <pg-streams>
+ <pg-stream>
+ <id>1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_1</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_2</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_3</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_4</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ <pg-stream>
+ <id>fw_udp_5</id>
+ <is-enabled>true</is-enabled>
+ </pg-stream>
+ </pg-streams>
+ </sample-plugin>
+ >
+
+ The same can be done for day-2 config (follow same steps just with day-2 configuration)
+
+ .. note::
+ Through deployment we did not deploy the PNF, we just modified the PNF. The PNF could also be installed by CDS
+ but this is not targeted in this guide.
+
+ .. tab:: Postman
diff --git a/docs/usecases/use-cases.rst b/docs/usecases/use-cases.rst
index 282f6a600..d1449b70f 100644
--- a/docs/usecases/use-cases.rst
+++ b/docs/usecases/use-cases.rst
@@ -9,4 +9,5 @@ Use Cases
:caption: Table of Contents
:maxdepth: 1
- wordpress-cnf-poc \ No newline at end of file
+ wordpress-cnf-poc
+ pnf-simulator \ No newline at end of file