feat: Create initial structure of Feast Go Operator (feast-dev#4596)

* init feast-operator

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* add featurestore api

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* add spec.feastProject field

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* add bundle files

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* modify release and versioning scripts

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* add validation to feastProject field

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* add operator to Makefile

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

* fixes

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

---------

Signed-off-by: Tommy Hughes <tohughes@redhat.com>

.github/workflows/publish.yml

@@ -49,7 +49,7 @@ jobs:
     needs: [get-version, publish-python-sdk]
     strategy:
       matrix:
-        component: [feature-server, feature-server-java, feature-transformation-server, feast-helm-operator]
+        component: [feature-server, feature-server-java, feature-transformation-server, feast-helm-operator, feast-operator]
     env:
       MAVEN_CACHE: gs://feast-templocation-kf-feast/.m2.2020-08-19.tar
       REGISTRY: feastdev

.releaserc.js

@@ -67,6 +67,7 @@ module.exports = {
                     "java/pom.xml",
                     "infra/charts/**/*.*",
                     "infra/feast-helm-operator/**/*",
+                    "infra/feast-operator/**/*",
                     "ui/package.json",
                     "sdk/python/feast/ui/package.json",
                     "sdk/python/feast/ui/yarn.lock"

Makefile

@@ -442,6 +442,18 @@ build-feast-helm-operator-docker:
 	VERSION=$(VERSION) \
 	$(MAKE) docker-build
 
+push-feast-operator-docker:
+	cd infra/feast-operator && \
+	IMAGE_TAG_BASE=$(REGISTRY)/feast-operator \
+	VERSION=$(VERSION) \
+	$(MAKE) docker-push
+
+build-feast-operator-docker:
+	cd infra/feast-operator && \
+	IMAGE_TAG_BASE=$(REGISTRY)/feast-operator \
+	VERSION=$(VERSION) \
+	$(MAKE) docker-build
+
 # Dev images
 
 build-feature-server-dev:

infra/feast-operator/.dockerignore

@@ -0,0 +1,3 @@
+# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
+# Ignore build and test binaries.
+bin/

infra/feast-operator/.gitignore

@@ -0,0 +1,30 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin/*
+Dockerfile.cross
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Go workspace file
+go.work
+
+# Kubernetes Generated files - skip generated files, except for vendored files
+!vendor/**/zz_generated.*
+
+# editor and IDE paraphernalia
+.idea
+.vscode
+*.swp
+*.swo
+*~
+
+# Installer file generated by Kustomize - skip 'dist/' directories within the Feast project except this one.
+!dist/

infra/feast-operator/.golangci.yml

@@ -0,0 +1,40 @@
+run:
+  timeout: 5m
+  allow-parallel-runners: true
+
+issues:
+  # don't skip warning about doc comments
+  # don't exclude the default set of lint
+  exclude-use-default: false
+  # restore some of the defaults
+  # (fill in the rest as needed)
+  exclude-rules:
+    - path: "api/*"
+      linters:
+        - lll
+    - path: "internal/*"
+      linters:
+        - dupl
+        - lll
+linters:
+  disable-all: true
+  enable:
+    - dupl
+    - errcheck
+    - exportloopref
+    - goconst
+    - gocyclo
+    - gofmt
+    - goimports
+    - gosimple
+    - govet
+    - ineffassign
+    - lll
+    - misspell
+    - nakedret
+    - prealloc
+    - staticcheck
+    - typecheck
+    - unconvert
+    - unparam
+    - unused

infra/feast-operator/Dockerfile

@@ -0,0 +1,33 @@
+# Build the manager binary
+FROM golang:1.21 AS builder
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY cmd/main.go cmd/main.go
+COPY api/ api/
+COPY internal/controller/ internal/controller/
+
+# Build
+# the GOARCH has not a default value to allow the binary be built according to the host where the command
+# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
+# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
+# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM gcr.io/distroless/static:nonroot
+WORKDIR /
+COPY --from=builder /workspace/manager .
+USER 65532:65532
+
+ENTRYPOINT ["/manager"]