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feat: add an observability operator #1018

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3 changes: 3 additions & 0 deletions services/obs-operator/.dockerignore
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# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
# Ignore build and test binaries.
bin/
29 changes: 29 additions & 0 deletions services/obs-operator/.gitignore
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# Binaries for programs and plugins
*.exe
*.exe~
*.dll
*.so
*.dylib
bin/*
Dockerfile.cross
config/crd/external/


# 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
*~
47 changes: 47 additions & 0 deletions services/obs-operator/.golangci.yml
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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
- ginkgolinter
- goconst
- gocyclo
- gofmt
- goimports
- gosimple
- govet
- ineffassign
- lll
- misspell
- nakedret
- prealloc
- revive
- staticcheck
- typecheck
- unconvert
- unparam
- unused

linters-settings:
revive:
rules:
- name: comment-spacings
35 changes: 35 additions & 0 deletions services/obs-operator/Dockerfile
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# Build the manager binary
FROM golang:1.23 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/

COPY pkg/ pkg/

# 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"]
214 changes: 214 additions & 0 deletions services/obs-operator/Makefile
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# Image URL to use all building/pushing image targets
IMG ?= controller:latest
# ENVTEST_K8S_VERSION refers to the version of kubebuilder assets to be downloaded by envtest binary.
ENVTEST_K8S_VERSION = 1.31.0

# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
ifeq (,$(shell go env GOBIN))
GOBIN=$(shell go env GOPATH)/bin
else
GOBIN=$(shell go env GOBIN)
endif

# CONTAINER_TOOL defines the container tool to be used for building images.
# Be aware that the target commands are only tested with Docker which is
# scaffolded by default. However, you might want to replace it to use other
# tools. (i.e. podman)
CONTAINER_TOOL ?= docker

# Setting SHELL to bash allows bash commands to be executed by recipes.
# Options are set to exit when a recipe line exits non-zero or a piped command fails.
SHELL = /usr/bin/env bash -o pipefail
.SHELLFLAGS = -ec

.PHONY: all
all: build

##@ General

# The help target prints out all targets with their descriptions organized
# beneath their categories. The categories are represented by '##@' and the
# target descriptions by '##'. The awk command is responsible for reading the
# entire set of makefiles included in this invocation, looking for lines of the
# file as xyz: ## something, and then pretty-format the target and help. Then,
# if there's a line with ##@ something, that gets pretty-printed as a category.
# More info on the usage of ANSI control characters for terminal formatting:
# https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters
# More info on the awk command:
# http://linuxcommand.org/lc3_adv_awk.php

.PHONY: help
help: ## Display this help.
@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf " \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)

##@ Development

.PHONY: manifests
manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
$(CONTROLLER_GEN) rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases

.PHONY: generate
generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.
$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."

.PHONY: fmt
fmt: ## Run go fmt against code.
go fmt ./...

.PHONY: vet
vet: ## Run go vet against code.
go vet ./...

.PHONY: test
test: manifests generate fmt vet envtest update-crds ## Run tests.
KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out

# Utilize Kind or modify the e2e tests to load the image locally, enabling compatibility with other vendors.
.PHONY: test-e2e # Run the e2e tests against a Kind k8s instance that is spun up.
test-e2e:
go test ./test/e2e/ -v -ginkgo.v

.PHONY: lint
lint: golangci-lint ## Run golangci-lint linter
$(GOLANGCI_LINT) run

.PHONY: lint-fix
lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes
$(GOLANGCI_LINT) run --fix

##@ Build

.PHONY: build
build: manifests generate fmt vet ## Build manager binary.
go build -o bin/manager cmd/main.go

.PHONY: run
run: manifests generate fmt vet ## Run a controller from your host.
go run ./cmd/main.go

# If you wish to build the manager image targeting other platforms you can use the --platform flag.
# (i.e. docker build --platform linux/arm64). However, you must enable docker buildKit for it.
# More info: https://docs.docker.com/develop/develop-images/build_enhancements/
.PHONY: docker-build
docker-build: ## Build docker image with the manager.
$(CONTAINER_TOOL) build -t ${IMG} .

.PHONY: docker-push
docker-push: ## Push docker image with the manager.
$(CONTAINER_TOOL) push ${IMG}

# PLATFORMS defines the target platforms for the manager image be built to provide support to multiple
# architectures. (i.e. make docker-buildx IMG=myregistry/mypoperator:0.0.1). To use this option you need to:
# - be able to use docker buildx. More info: https://docs.docker.com/build/buildx/
# - have enabled BuildKit. More info: https://docs.docker.com/develop/develop-images/build_enhancements/
# - be able to push the image to your registry (i.e. if you do not set a valid value via IMG=<myregistry/image:<tag>> then the export will fail)
# To adequately provide solutions that are compatible with multiple platforms, you should consider using this option.
PLATFORMS ?= linux/arm64,linux/amd64,linux/s390x,linux/ppc64le
.PHONY: docker-buildx
docker-buildx: ## Build and push docker image for the manager for cross-platform support
# copy existing Dockerfile and insert --platform=${BUILDPLATFORM} into Dockerfile.cross, and preserve the original Dockerfile
sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross
- $(CONTAINER_TOOL) buildx create --name obs-operator-builder
$(CONTAINER_TOOL) buildx use obs-operator-builder
- $(CONTAINER_TOOL) buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross .
- $(CONTAINER_TOOL) buildx rm obs-operator-builder
rm Dockerfile.cross

.PHONY: build-installer
build-installer: manifests generate kustomize ## Generate a consolidated YAML with CRDs and deployment.
mkdir -p dist
cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG}
$(KUSTOMIZE) build config/default > dist/install.yaml

##@ Deployment

ifndef ignore-not-found
ignore-not-found = false
endif

.PHONY: install
install: manifests kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
$(KUSTOMIZE) build config/crd | $(KUBECTL) apply -f -

.PHONY: uninstall
uninstall: manifests kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
$(KUSTOMIZE) build config/crd | $(KUBECTL) delete --ignore-not-found=$(ignore-not-found) -f -

.PHONY: deploy
deploy: manifests kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config.
cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG}
$(KUSTOMIZE) build config/default | $(KUBECTL) apply -f -

.PHONY: undeploy
undeploy: kustomize ## Undeploy controller from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
$(KUSTOMIZE) build config/default | $(KUBECTL) delete --ignore-not-found=$(ignore-not-found) -f -

##@ Dependencies

## Location to install dependencies to
LOCALBIN ?= $(shell pwd)/bin
$(LOCALBIN):
mkdir -p $(LOCALBIN)

## Tool Binaries
KUBECTL ?= kubectl
KUSTOMIZE ?= $(LOCALBIN)/kustomize
CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
ENVTEST ?= $(LOCALBIN)/setup-envtest
GOLANGCI_LINT = $(LOCALBIN)/golangci-lint

## Tool Versions
KUSTOMIZE_VERSION ?= v5.4.3
CONTROLLER_TOOLS_VERSION ?= v0.16.1
ENVTEST_VERSION ?= release-0.19
GOLANGCI_LINT_VERSION ?= v1.59.1

.PHONY: kustomize
kustomize: $(KUSTOMIZE) ## Download kustomize locally if necessary.
$(KUSTOMIZE): $(LOCALBIN)
$(call go-install-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v5,$(KUSTOMIZE_VERSION))

.PHONY: controller-gen
controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary.
$(CONTROLLER_GEN): $(LOCALBIN)
$(call go-install-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen,$(CONTROLLER_TOOLS_VERSION))

.PHONY: envtest
envtest: $(ENVTEST) ## Download setup-envtest locally if necessary.
$(ENVTEST): $(LOCALBIN)
$(call go-install-tool,$(ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest,$(ENVTEST_VERSION))

.PHONY: golangci-lint
golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
$(GOLANGCI_LINT): $(LOCALBIN)
$(call go-install-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/cmd/golangci-lint,$(GOLANGCI_LINT_VERSION))

##@ CRD Management

.PHONY: update-crds
update-crds: ## Download external CRDs needed for testing.
mkdir -p config/crd/external
# Download PrometheusRule CRD
curl -L https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/main/example/prometheus-operator-crd/monitoring.coreos.com_prometheusrules.yaml -o config/crd/external/monitoring.coreos.com_prometheusrules.yaml
# Download PrometheusRuleGroup CRD (Azure Service Operator)
# curl -L https://raw.githubusercontent.com/Azure/azure-service-operator/main/v2/config/crd/bases/alertsmanagement.azure.com_prometheusrulegroups.yaml -o config/crd/external/alertsmanagement.azure.com_prometheusrulegroups.yaml

.PHONY: clean-crds
clean-crds: ## Remove downloaded external CRDs.
rm -rf config/crd/external

# go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
# $1 - target path with name of binary
# $2 - package url which can be installed
# $3 - specific version of package
define go-install-tool
@[ -f "$(1)-$(3)" ] || { \
set -e; \
package=$(2)@$(3) ;\
echo "Downloading $${package}" ;\
rm -f $(1) || true ;\
GOBIN=$(LOCALBIN) go install $${package} ;\
mv $(1) $(1)-$(3) ;\
} ;\
ln -sf $(1)-$(3) $(1)
endef
16 changes: 16 additions & 0 deletions services/obs-operator/PROJECT
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# Code generated by tool. DO NOT EDIT.
# This file is used to track the info used to scaffold your project
# and allow the plugins properly work.
# More info: https://book.kubebuilder.io/reference/project-config.html
domain: altinn.no
layout:
- go.kubebuilder.io/v4
projectName: obs-operator
repo: github.com/altinn/altinn-platform/services/obs-operator
resources:
- controller: true
domain: altinn.no
group: monitoring
kind: PrometheusRule
version: v1
version: "3"
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