@automationcloud/worker NPM

Worker

Worker embeds @automationcloud/engine and integrates with the rest of automationcloud.net to be able to execute jobs.

Development

Follow instructions from @automationcloud/autopilot README.
Setup environment by copying .env.exmaple to .env and modifying it to fit your needs.
You'll need Redis to run tests. You can run one with Docker:
```
docker run --name=ub-redis -p 6379:6379 redis
```
To build worker image, run npm run docker:build-worker in Project root (not here).

Worker Tags (aka Worker Pools)

Sometimes we deploy multiple different worker images simultaneously (e.g. to allow scripts to be migrated, or to test experimental stuff). In this case we allocate different worker tags to each deployment, so that different services can be routed to specific worker image for execution. We refer to a group of worker containers sharing the same worker tag as "worker pool".

Worker tag is defined by WORKER_TAG variable. We use stable for "main" pool.

Known quirks

/dev/shm

Chromium needs a relatively large /dev/shm partition (200MB or bigger) to run properly. With Docker use --shm-size option, with k8s it is possible to mount a tmpfs volume:

    volumes:
    - emptyDir:
        medium: Memory
    name: dshm

A quick way to test if container has sufficient /dev/shm is:

kubectl exec -it worker-udf-6c8795fb78-xf5cf sh
$ df -h
...
tmpfs           1.8G   16M  1.8G   1% /dev/shm

If it's something around 100MB or less, then Chrome will start crashing for obscure reasons soon.

License

See LICENSE.

@automationcloud/engine @types/koa @types/lru-cache @types/node-fetch @ubio/framework dotenv inversify ioredis jsonpointer koa lru-cache ms node-fetch reflect-metadata rimraf uuid

@infinitebrahmanuniverse/nolb-_auto @everything-registry/sub-chunk-98 @zalastax/nolb-_auto

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