Move to v1beta1 and embedded image

[phisco]

No description provided.

[phisco]

Currently hitting the following error while trying to run an example image similar to the one described in #1: cannot start spark: [function-runtime-oci spark --max-stdio-bytes=104857600 --image-tar-ball=/function-runtime-oci/function.tgz]: fork/exec /usr/local/bin/function-runtime-oci: invalid argument.
Still need to dig further into the spark run method.

[negz]

I think we can drop all this config, and just rely on the resource limits (and network access) of the "outer" container (i.e. the Kubernetes pod that runs this Function).

[phisco]

I added some logs and tried forcing the root user as suggested @negz, but still nothing:

xfn xfn 2023-08-23T11:53:17Z    DEBUG   function-runtime-oci    CAP_SETUID and CAP_SETGID are available
xfn xfn 2023-08-23T11:53:17Z    DEBUG   function-runtime-oci    root UID and GID in function's user namespace   {"uid": 100000, "gid": 100000}
xfn xfn 2023-08-23T11:53:17Z    DEBUG   function-runtime-oci    image tarball copied to cache   {"src": "function.tgz", "path": "/function-runtime-oci-cache/function.tgz"}
xfn xfn 2023-08-23T11:53:17Z    DEBUG   function-runtime-oci    Listening       {"network": "tcp", "address": "0.0.0.0:1234"}
xfn xfn 2023-08-23T11:53:27Z    DEBUG   function-runtime-oci    Running function        {"request": "desired:{composite:{resource:{fields:{key:\"something\"  value:{string_value:\"something\"}}}}}"}
xfn xfn 2023-08-23T11:53:27Z    DEBUG   function-runtime-oci    Running command {"command": "/usr/local/bin/function-runtime-oci spark --max-stdio-bytes=104857600 --image-tar-ball=/function-runtime-oci-cache/function.tgz"}
xfn xfn 2023-08-23T11:53:27Z    DEBUG   function-runtime-oci    Setting UID and GID mappings    {"uid": 100000, "gid": 100000}
xfn xfn 2023-08-23T11:53:27Z    DEBUG   function-runtime-oci    Starting command        {"command": "/usr/local/bin/function-runtime-oci spark --max-stdio-bytes=104857600 --image-tar-ball=/function-runtime-oci-cache/function.tgz"}

And still get:

grpcurl -plaintext -d @ localhost:1234 apiextensions.fn.proto.v1beta1.FunctionRunnerService.RunFunction <<EOM                                                                                                                           66 ↵
{
  "desired": {
    "composite": {
      "resource": {
        "something": "something"
      }
    }
  }
}
EOM
ERROR:
  Code: Unknown
  Message: cannot start spark: [function-runtime-oci spark --max-stdio-bytes=104857600 --image-tar-ball=/function-runtime-oci-cache/function.tgz]: fork/exec /usr/local/bin/function-runtime-oci: invalid argument

I'm currently deploying the following pod and then connecting to it via kubectl port-forward xfn 1234:1234:

apiVersion: v1
kind: Pod
metadata:
  labels:
    run: xfn
  name: xfn
spec:
  containers:
  - image: phisco/function-runtime-oci-example:v0.0.20
    imagePullPolicy: Always
    name: xfn
    args:
    - -d
    ports:
    - containerPort: 1234
    securityContext:
      privileged: true
      runAsUser: 0
    volumeMounts:
    - mountPath: /function-runtime-oci-cache
      name: xfn-cache
  volumes:
  - name: xfn-cache
    emptyDir:
      sizeLimit: 1Gi
  restartPolicy: Always

The image I'm using is built on top of the one from this PR:

ARG VERSION=latest
FROM phisco/function-runtime-oci:${VERSION}
ARG IMAGE_TARBALL

COPY ${IMAGE_TARBALL} /

ENV IMAGE_TARBALL=${IMAGE_TARBALL}
USER root

$ VERSION=v0.0.20; docker build --build-arg IMAGE_TARBALL=function.tgz --build-arg VERSION=${VERSION} -t phisco/function-runtime-oci-example:${VERSION} .

providing as function.tgz the compressed tarball of the image built from:

FROM alpine:3.18
RUN apk add --no-cache jq
ENTRYPOINT ["/bin/sh", "-c", "jq '.desired.composite.resource.labels |= {\"labelizer.xfn.crossplane.io/processed\": \"true\"} + .'"]