UBahn - User Skills Processor

Sync the skills for a user in u-bahn with the skills in members api

Dependencies

Nodejs(v12+)
Kafka

Configuration

Configuration for the skill record processor is at config/default.js. The following parameters can be set in config files or in env variables:

LOG_LEVEL: the log level; default value: 'debug'
KAFKA_URL: comma separated Kafka hosts; default value: 'localhost:9092'
KAFKA_CLIENT_CERT: Kafka connection certificate, optional; default value is undefined; if not provided, then SSL connection is not used, direct insecure connection is used; if provided, it can be either path to certificate file or certificate content
KAFKA_CLIENT_CERT_KEY: Kafka connection private key, optional; default value is undefined; if not provided, then SSL connection is not used, direct insecure connection is used; if provided, it can be either path to private key file or private key content
KAFKA_GROUP_ID: the Kafka group id, default value is 'skill-record-processor'
SKILL_SYNC_TOPIC: the sync skill Kafka message topic, default value is 'backgroundjob.sync.user.skills'
UBAHN_API_URL: The ubahn api url, default value: 'https://api.topcoder-dev.com/v5'
MEMBERS_API_URL: The topcoder member api url, default value: 'https://api.topcoder-dev.com/v5/members'
AUTH0_URL: The auth0 url, default value: 'https://topcoder-dev.auth0.com/oauth/token'
AUTH0_UBAHN_AUDIENCE: The auth0 audience for accessing ubahn api(s), default value: 'https://u-bahn.topcoder-dev.com'
AUTH0_TOPCODER_AUDIENCE: The auth0 audience for accessing ubahn api(s), default value: 'https://m2m.topcoder-dev.com/'
AUTH0_CLIENT_ID: The auth0 client id
AUTH0_CLIENT_SECRET: The auth0 client secret
AUTH0_PROXY_SERVER_URL: The auth0 proxy server url
TOKEN_CACHE_TIME: The token cache time
SKILL_PROVIDER_NAME: The skill provider name, default value: Topcoder
SLEEP_TIME: The pause time between two create operations, default value: 1000 ms

There is a /health endpoint that checks for the health of the app. This sets up an expressjs server and listens on the environment variable PORT. It's not part of the configuration file and needs to be passed as an environment variable

Local Kafka setup

Install bin

http://kafka.apache.org/quickstart contains details to setup and manage Kafka server, below provides details to setup Kafka server in Linux/Mac, Windows will use bat commands in bin/windows instead

Local install with Docker

Navigate to the directory docker-kafka
Run the command docker-compose up -d

Local deployment

Make sure that Kafka is running.
From the project root directory, run the following command to install the dependencies
```
npm install
```
To run linters if required
```
npm run lint
```
To fix possible lint errors:
```
npm run lint:fix
```
Start the processor and health check dropin
```
npm start
```

Local Deployment with Docker

To run the Skill Record Processor using docker, follow the below steps

Navigate to the directory docker
Rename the file sample.api.env to api.env
Set the auth0 config in the file api.env
Once that is done, run the following command
```
docker-compose up
```
When you are running the application for the first time, It will take some time initially to download the image and install the dependencies

Verification

config AUTH0_CLIENT_ID, AUTH0_CLIENT_SECRET
start kafka-console-producer to write messages to backgroundjob.sync.user.skills docker exec -it skill-record-processor_kafka /opt/kafka/bin/kafka-console-producer.sh --broker-list localhost:9092 --topic backgroundjob.sync.user.skills
write message: { "topic": "backgroundjob.sync.user.skills", "originator": "backgroundjob.service", "timestamp": "2021-05-08T00:00:00.000Z", "mime-type": "application/json", "payload": {"id":"88774616","handle":"billsedison","firstName":"Sachin1","lastName":"Kumar1"} }
Watch the app console, It will show message successfully handled.
write non handle message: { "topic": "backgroundjob.sync.user.skills", "originator": "backgroundjob.service", "timestamp": "2021-05-08T00:00:00.000Z", "mime-type": "application/json", "payload": {"id":"88774616","firstName":"Sachin1","lastName":"Kumar1"} }
watch the app console, it will show the ignoring message

topcoder-platform/u-bahn-user-skills-processor

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