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@@ -1,79 +1,57 @@ -# OpenECOMP APP-C +# ONAP APPC --- --- # Introduction -The Application Controller (APP-C) is one of the components in the OpenECOMP Platform. Its main function is to perform functions to control the lifecycle of Virtual Functions (VNFs) as well as the components that make up these functions. Therefore, this allows the cloud to be abstracted from Virtual Functions in order to enable repeatable actions, as well as enabling automation and a dynamic configuration approach. +The Application Controller (APPC) is one of the components in the ONAP Platform. Its main function is to perform functions to control the lifecycle of Virtual Functions (VNFs) as well as the components that make up these functions. Therefore, this allows the cloud to be abstracted from Virtual Functions in order to enable repeatable actions, as well as enabling automation and a dynamic configuration approach. -OpenECOMP APP-C is delivered with **3 Docker Containers**, which are deployed using Docker Images already containing the APP-C Framework Suite. +ONAP APPC is delivered with **3 Docker Containers**, which are deployed using Docker Images already containing the APPC Framework Suite. NOTE: All three containers are hosted on Ubuntu 14.04 LTS OS. -# Deployment Mode for APP-C +# Deployment Mode for APPC The docker containers described above are set up to be deployed on the same Virtual Machine. **Docker Compose** is Docker's deployment tool that allows to configure and deploy multiple containers at once. -# Compiling and Building APP-C +# Compiling and Building APPC -APP-C (structured as a Maven project) uses the Maven tool to help compile, build, and deploy APP-C Artifacts (usually made up of Java packages) into a Maven Repository. In order to compile and build APP-C, a `mvn clean install` is executed, which checks for any errors and Java exceptions during compilation process. +APPC (structured as a Maven project) uses the Maven tool to help compile, build, and deploy APPC Artifacts (usually made up of Java packages) into a Maven Repository. In order to compile and build APPC, a `mvn clean install` is executed, which checks for any errors and Java exceptions during compilation process. -##### Handling YANG Models -* After running `mvn clean install`, this will generate some code from the yang models. -* Modify the yang model file under the model project. -* Follow the comments in the generated provider class to wire your new provider into the generated -code. -* Modify the generated provider model to respond to and handle the yang model. Depending on what -you added to your model you may need to inherit additional interfaces or make other changes to -the provider model. +# Deploying APPC +In order to deploy APPC, a Docker-ready machine needs to be available in order to deploy the APPC Docker Containers. The following will help explain the requirements in order to run Docker to deploy these containers. -##### Structure of a ODL Karaf Feature in APP-C -* model - - Provides the yang model for your application. This is your primary northbound interface. -* provider - - This is where the JAVA code is implemented. This part will define what the Karaf Feature will accomplish and how it will respond to a yang model. -* features - - Defines the contents of a Karaf Feature. If you add dependencies on third-party bundles, then you will need to - modify the features.xml to list out the dependencies. -* installer - - Bundles all of the jars and third party dependencies (minus ODL dependencies) into a single - .zip file with the necessary configuration files in order to install the Karaf Feature by means of calling the Karaf Client (which will ultimately run "feature:install <FEATURE_NAME>") in order to install the feature. +### APPC Docker Containers +ONAP APPC docker images are currently stored on the Rackspace Nexus Docker Registry (Maven Repository). The deployment code can be found in the Maven Project that builds and deploys the Docker Images to be deployed in the Nexus Repository (current approach is by using Jenkins). These Docker Images are composed of the APPC Artifacts (org.openecomp.appc.*) compiled and packaged in the "appc" git repository. +The following Docker images are the actual deployment images used for running APPC: +- **APPC Container**: This Docker container carries the APPC Core Framework (OpenDaylight, Karaf, OSGI Bundles, ODL Functions/APIs, and APPC specific features). This image is built on top of the SDN-C Docker Image, which contains core features (such as dblib as the Database Connector, SLI - the Service Logic Interpreter, and the Active & Available Inventory (A&AI) Listener). Some of these inherited SDN-C features/artifacts are necessary dependencies to build and compile APPC features/artifacts. +- **MySQL DB Container (Version 5.6)**: This is the database for APPC. It is currently using MySQL Community Version (Open-Source version). +- **Node Red / DGBuilder**: This container has the visual tool used to assemble DGs in order to put together flows or services used to serve Virtual Functions. NOTE: This container is deployed using a Docker Image that is managed and supported by the SDN-C component. -# Deploying APP-C -In order to deploy APP-C, a Docker-ready machine needs to be available in order to deploy the APP-C Docker Containers. The following will help explain the requirements in order to run Docker to deploy these containers. +# Starting APPC -### APP-C Docker Containers -OpenECOMP APP-C docker images are currently stored on the Rackspace Nexus Docker Registry (Maven Repository). The deployment code can be found in the Maven Project that builds and deploys the Docker Images to be deployed in the Nexus Repository (current approach is by using Jenkins). These Docker Images are composed of the APP-C Artifacts (org.openecomp.appc.*) compiled and packaged in the "appc" git repository. +Ther following steps are needed to deploy and start ONAP APPC: -The following Docker images are the actual deployment images used for running APP-C: -- **APP-C Container (Version 1.0.0)**: This Docker container carries the APP-C Core Framework (OpenDaylight, Karaf, OSGI Bundles, ODL Functions/APIs, and APP-C specific features). This image is built on top of the SDN-C Docker Image, which contains core features (such as dblib as the Database Connector, SLI - the Service Logic Interpreter, and the Active & Available Inventory (A&AI) Listener). Some of these inherited SDN-C features/artifacts are necessary dependencies to build and compile APP-C features/artifacts. -- **MySQL DB Container (Version 5.6)**: This is the database for APP-C. It is currently using MySQL Community Version (Open-Source version). -- **Node Red / DGBuilder (Version 1.0.0)**: This container has the visual tool used to assemble DGs in order to put together flows or services used to serve Virtual Functions. NOTE: This container is deployed using a Docker Image that is managed and supported by the SDN-C component. - -# Starting APP-C - -Ther following steps are needed to deploy and start OpenECOMP APP-C: - -##### Requirement to Pre-Define properties before compiling APP-C: +##### Requirement to Pre-Define properties before compiling APPC: - The following maven properties are not defined by default, since they change based on where the platform is being deployed: - - ${ecomp.nexus.url}: URL of the Nexus Repository where APP-C Code is at. - - ${ecomp.nexus.port}: Port number of the Nexus Repository where APP-C Code is at. - - ${ecomp.nexus.user}: Username ID of the Nexus Repository where APP-C Code is at. - - ${ecomp.nexus.password}: Password of the Nexus Repository where APP-C Code is at. + - ${openecomp.nexus.url}: URL of the Nexus Repository where APPC Code is at. + - ${openecomp.nexus.port}: Port number of the Nexus Repository where APPC Code is at. + - ${openecomp.nexus.user}: Username ID of the Nexus Repository where APPC Code is at. + - ${openecomp.nexus.password}: Password of the Nexus Repository where APPC Code is at. -##### Using Jenkins Jobs to set up APP-C Package -- A Jenkins instance for OpenECOMP is required, in which Jenkins Jobs for both the APP-C core code and deployment code are maintained. +##### Using Jenkins Jobs to set up APPC Package +- A Jenkins instance for ONAP is required, in which Jenkins Jobs for both the APPC core code and deployment code are maintained. -- Jenkins Job for APP-C Core git project: The Jenkins Job for the APP-C git repository (Core Component) is in charge of compiling and uploading/deploying successfully compiled maven APP-C artifacts into a Nexus/Maven Repository. +- Jenkins Job for APPC Core git project: The Jenkins Job for the APPC git repository (Core Component) is in charge of compiling and uploading/deploying successfully compiled maven APPC artifacts into a Nexus/Maven Repository. -- Jenkins Job for APP-C Deployment git project: The Jenkins Job is used to run the APP-C Deployment code which ultimately builds and deploy the APP-C Docker Image. Once the Jenkins job runs successfully, the newly compiled images are uploaded to the Nexus Repository. The APP-C Docker image contains all the SDN-C and APP-C artifacts needed to deploy a successful APP-C Component. - - With this job, all required and newly compiled and uploaded (to Nexus Repository) APP-C features from the Jenkins job are pulled into the images and installed in an automated fashion. +- Jenkins Job for APPC Deployment git project: The Jenkins Job is used to run the APPC Deployment code which ultimately builds and deploy the APPC Docker Image. Once the Jenkins job runs successfully, the newly compiled images are uploaded to the Nexus Repository. The APPC Docker image contains all the SDN-C and APPC artifacts needed to deploy a successful APPC Component. + - With this job, all required and newly compiled and uploaded (to Nexus Repository) APPC features from the Jenkins job are pulled into the images and installed in an automated fashion. -- As explained in the "APP-C Docker Containers" section, the configuration and set up of the other two docker containers are not maintained by APP-C. MySQL Docker Image is maintained by the Open Source MySQL Community and the Node Red / DGBuilder Docker Image is maintained by SDN-C. +- As explained in the "APPC Docker Containers" section, the configuration and set up of the other two docker containers are not maintained by APPC. MySQL Docker Image is maintained by the Open Source MySQL Community and the Node Red / DGBuilder Docker Image is maintained by SDN-C. -##### Using Docker to start APP-C Package +##### Using Docker to start APPC Package -- The VM where APP-C will be started needs to have Docker Engine and Docker-Compose installed (instructions on how to set Docker Engine can be found [here](https://docs.docker.com/engine/installation/)). The stable version of Docker Engine where APP-C has been tested to work is v1.12. An important requirement in order to access the Docker Image Repository on Nexus Repository (where docker images are currently stored) need to include the Nexus repository certificate imported in the host VM. This is needed for Docker to be able to access the Docker Images required (NOTE: MySQL Docker Image is obtained from the public Docker Hub). +- The VM where APPC will be started needs to have Docker Engine and Docker-Compose installed (instructions on how to set Docker Engine can be found [here](https://docs.docker.com/engine/installation/)). The stable version of Docker Engine where APPC has been tested to work is v1.12. An important requirement in order to access the Docker Image Repository on Nexus Repository (where docker images are currently stored) need to include the Nexus repository certificate imported in the host VM. This is needed for Docker to be able to access the Docker Images required (NOTE: MySQL Docker Image is obtained from the public Docker Hub). - NOTE ON "docker-compose" COMMANDS: The only work if there is a provided docker-compose YAML script in the cmd path @@ -99,9 +77,9 @@ docker-compose pull docker-compose up # add -d argument to start process as a daemon (background process) ``` -##### Using Docker to stop APP-C Package +##### Using Docker to stop APPC Package -- The following steps are required to stop the APP-C package: +- The following steps are required to stop the APPC package: ```bash # Stop and Destroy Docker Containers (with docker-compose YAML script) @@ -118,11 +96,11 @@ docker rm <MYSQL_DOCKER_CONTAINER> docker rm <DGBUILDER_DOCKER_CONTAINER> ``` -- NOTE: To get a feel of how the deployment is actually performed, it is best to review the Docker Strategy of APP-C and look at the actual Jenkins Jobs. +- NOTE: To get a feel of how the deployment is actually performed, it is best to review the Docker Strategy of APPC and look at the actual Jenkins Jobs. #### Other Useful Docker Commands -- The commands below are useful to test or troubleshoot in case a change in the gitlab code breaks a clean APP-C deployment: +- The commands below are useful to test or troubleshoot in case a change in the gitlab code breaks a clean APPC deployment: ```bash # Check current docker-compose logs generated during 'docker-compose up' process: @@ -133,15 +111,21 @@ docker inspect <DOCKER_CONTAINER> # Verbose output during docker-compose commands docker-compose --verbose <DOCKER_COMPOSE_CMD_ARG> + +# Check previous docker volumes +docker volume ls + +# Delete previous docker volume(s) +docker volume rm <DOCKER_VOL_ID_1> <DOCKER_VOL_ID_2> ... <DOCKER_VOL_ID_N> ``` -## OpenECOMP Heat Template +## ONAP Heat Template -A Heat template that can be used on RackSpace to spin up the APP-C Host VM as well as the other OpenECOMP Components is available in gitlab. This template would orchestrate the deployment of all OpenECOMP components, which will trigger docker instantiation techniques to start up the containers (either standard docker or docker-compose - depending on how the component's containers get spun up). +A Heat template that can be used on RackSpace to spin up the APPC Host VM as well as the other ONAP Components is available in gitlab. This template would orchestrate the deployment of all ONAP components, which will trigger docker instantiation techniques to start up the containers (either standard docker or docker-compose - depending on how the component's containers get spun up). -# Validating APP-C Installation +# Validating APPC Installation -First of all, APP-C Features come in the form of Karaf Features (an ODL-OpenDaylight package) which can be composed of one or more OSGI bundles. These features get installed in the ODL framework in order to be used and installed in the APP-C Docker Container (NOTE: SDN-C Core Features also get installed since APP-C docker image uses the SDN-C Core docker image as a base image). +First of all, APPC Features come in the form of Karaf Features (an ODL-OpenDaylight package) which can be composed of one or more OSGI bundles. These features get installed in the ODL framework in order to be used and installed in the APPC Docker Container (NOTE: SDN-C Core Features also get installed since APPC docker image uses the SDN-C Core docker image as a base image). ### Accessing docker containers @@ -151,9 +135,9 @@ The following command is used to log in / access the docker containers: docker exec -it <DOCKER_CONTAINER> bash ``` -### Checking if APP-C Features are installed successfully +### Checking if APPC Features are installed successfully -The following commands are used to check if the APP-C (and SDN-C) Bundles and Features have been installed correctly in ODL (make sure to enter the APP-C Docker Container shell session): +The following commands are used to check if the APPC (and SDN-C) Bundles and Features have been installed correctly in ODL (make sure to enter the APPC Docker Container shell session): ```bash # All commands are done inside the appc docker container @@ -163,11 +147,11 @@ cd /opt/opendaylight/current/bin ./client -u karaf # Check if features have been installed or not (the ones with an 'X' in the "Installed" column have been successfully installed) -feature:list | grep appc # filter app-c features only +feature:list | grep appc # filter appc features only feature:list | grep sdnc # filter sdn-c features only # Check if bundles have been loaded successfully (the ones with 'Active' in the "State" column have been successfully loaded) -bundle:list | grep appc # filter app-c bundles only +bundle:list | grep appc # filter appc bundles only bundle:list | grep sdnc # grep sdn-c bundles only # Check reason why bundle failed to load @@ -175,24 +159,25 @@ bundle:diag | grep <BUNDLE_NAME> ``` ### Accessing the API Explorer -The API Explorer is a GUI provided by OpenDaylight Open Source Framework. This GUI is very useful to send API calls from APIs that are either developed by APP-C or SDN-C frameworks. In order to make these REST calls, some APIs use the [RESTCONF](http://sdntutorials.com/what-is-restconf/) protocol to make such calls. +The API Explorer is a GUI provided by OpenDaylight Open Source Framework. This GUI is very useful to send API calls from APIs that are either developed by APPC or SDN-C frameworks. In order to make these REST calls, some APIs use the [RESTCONF](http://sdntutorials.com/what-is-restconf/) protocol to make such calls. -Currently, the APIs that have a Directed Graph (DG) mapped to it are the ones that can be tested which are the SDN-C APIs and APP-C "appc-provider" APIs (LCM APIs will be available to test in later releases). +Currently, the APIs that have a Directed Graph (DG) mapped to it are the ones that can be tested which are the SDN-C APIs and APPC "appc-provider" APIs (LCM APIs will be available to test in later releases). In order to access this GUI, you need to go to the following website which will prompt for ODL user credentials in order to authenticate (more details on generic API Explorer [here](https://wiki.opendaylight.org/view/OpenDaylight_Controller:MD-SAL:Restconf_API_Explorer)): - http://localhost:8282/apidoc/explorer/index.html (change localhost to your VM's public IP). -# APP-C Configuration Model +# APPC Configuration Model -APP-C Configuration model involves using "default.properties" files (which are usually located in each of the APP-C Features - ../<APPC_FEATURE_BUNDLE>/src/<MAIN_OR_TEST>/resources/org/openecomp/appc/default.properties) for APP-C Feature that have default (or null) property values inside the core APP-C code. These default (or null) properties should be overwritten in the properties file called "appc.properties" located in the APP-C Deployment code (../installation/src/main/appc-properties/appc.properties). +APPC Configuration model involves using "default.properties" files (which are usually located in each of the APPC Features - ../<APPC_FEATURE_BUNDLE>/src/<MAIN_OR_TEST>/resources/org/openecomp/appc/default.properties) for APPC Feature that have default (or null) property values inside the core APPC code. These default (or null) properties should be overwritten in the properties file called "appc.properties" located in the APPC Deployment code (../installation/src/main/appc-properties/appc.properties). -Each APP-C component depends on the property values that are defined for them in order to function properly. For example, the APP-C Feature "appc-rest-adapter" located in the APP-C Core repo is used to listen to events that are being sent and received in the form of DMaaP Messages through a DMaaP Server Instance (which is usually defined as a RESTful API Layer over the Apache Kafka Framework). The properties for this feature need to be defined to point to the right DMaaP set of events to make sure that we are sending and receiving the proper messages on DMaaP. +Each APPC component depends on the property values that are defined for them in order to function properly. For example, the APPC Feature "appc-rest-adapter" located in the APPC Core repo is used to listen to events that are being sent and received in the form of DMaaP Messages through a DMaaP Server Instance (which is usually defined as a RESTful API Layer over the Apache Kafka Framework). The properties for this feature need to be defined to point to the right DMaaP set of events to make sure that we are sending and receiving the proper messages on DMaaP. -Currently, there are two ways to change properties for APP-C Features: -- Permanent Change: In appc.properties, change property values as needed and commit changes in your current git repo where your APP-C Deployment code repo is at. Then, run your Jenkins job that deploys the APP-C Docker Image (make sure the Jenkins Job configuration points to the branch where you just commited the properties change) to make sure that APP-C Docker Image contains latest changes of appc.properties from the beginning (of course, the Host VM where the docker containers will be deployed at needs to update images with "docker-compose pull" to pick up the changes you just committed and compiled). -- Temporary Change (for quick testing/debugging): In the APP-C Docker Container, find the appc.properties file in /opt/openecomp/appc/properties/appc.properties and make changes as needed. Then, restart the APP-C Docker Container by running "docker stop <APPC_DOCKER_CONTAINER>" then "docker start <APPC_DOCKER_CONTAINER>") (NOTE: This approach will lose all changes done in appc.properties if the docker container is destroyed instead of stopped). +Currently, there are two ways to change properties for APPC Features: +- Permanent Change: In appc.properties, change property values as needed and commit changes in your current git repo where your APPC Deployment code repo is at. Then, run your Jenkins job that deploys the APPC Docker Image (make sure the Jenkins Job configuration points to the branch where you just commited the properties change) to make sure that APPC Docker Image contains latest changes of appc.properties from the beginning (of course, the Host VM where the docker containers will be deployed at needs to update images with "docker-compose pull" to pick up the changes you just committed and compiled). +- Temporary Change (for quick testing/debugging): In the APPC Docker Container, find the appc.properties file in /opt/openecomp/appc/properties/appc.properties and make changes as needed. Then, restart the APPC Docker Container by running "docker stop <APPC_DOCKER_CONTAINER>" then "docker start <APPC_DOCKER_CONTAINER>") (NOTE: This approach will lose all changes done in appc.properties if the docker container is destroyed instead of stopped). # Additional Notes -- For more information on a current list of available properties for APP-C Features, please go to README.md located in the installation directory path of the APP-C Deployment Code. +- For more information on a current list of available properties for APPC Features, please go to README.md located in the installation directory path of the APPC Deployment Code. +- More documentation can be found on the ONAP Wiki's [APPC Documentation Page](https://wiki.onap.org/display/DW/Controllers) and in ONAP's [Read the docs](http://onap.readthedocs.io/en/latest/release/index.html#projects) documentation site. |