diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..0f04682 --- /dev/null +++ b/.dockerignore @@ -0,0 +1,4 @@ +# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file +# Ignore build and test binaries. +bin/ +testbin/ diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml new file mode 100644 index 0000000..080b4ac --- /dev/null +++ b/.github/workflows/ci.yaml @@ -0,0 +1,67 @@ +--- +name: ci +on: + push: + branches: [ main ] + tags: [ v* ] + +jobs: + lint: + name: lint + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - uses: actions/setup-go@v4 + with: + go-version: '1.20' + cache: false + - name: golangci-lint + uses: golangci/golangci-lint-action@v3 + with: + version: latest + args: --timeout 5m + + test: + name: test + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - name: run tests using make + run: make test + docker: + name: docker + runs-on: ubuntu-latest + needs: + - lint + - test + steps: + - uses: actions/checkout@v2 + - uses: docker/setup-qemu-action@v1 + - uses: docker/setup-buildx-action@v1 + - uses: docker/login-action@v1 + with: + registry: ghcr.io + username: ${{ github.repository_owner }} + password: ${{ secrets.GITHUB_TOKEN }} + - uses: docker/metadata-action@v3 + id: meta + with: + images: ghcr.io/${{ github.repository }} + tags: | + type=ref,event=branch + type=ref,event=pr + type=semver,pattern={{version}} + type=semver,pattern={{major}}.{{minor}} + type=sha,prefix={{branch}}- + + - uses: docker/build-push-action@v2 + with: + file: "Dockerfile" + context: . + platforms: linux/amd64 + push: true + tags: | + ${{ steps.meta.outputs.tags }} + labels: ${{ steps.meta.outputs.labels }} + + diff --git a/.github/workflows/helm.yaml b/.github/workflows/helm.yaml new file mode 100644 index 0000000..841ccc6 --- /dev/null +++ b/.github/workflows/helm.yaml @@ -0,0 +1,31 @@ +name: Release Helm Chart + +on: + push: + branches: + - main + +jobs: + release: + name: release + runs-on: ubuntu-latest + steps: + - name: Checkout + uses: actions/checkout@v3 + with: + fetch-depth: 0 + + - name: Configure Git + run: | + git config user.name "$GITHUB_ACTOR" + git config user.email "$GITHUB_ACTOR@users.noreply.github.com" + + - name: Install Helm + uses: azure/setup-helm@v3 + + - name: Run chart-releaser + uses: helm/chart-releaser-action@v1.5.0 + env: + CR_TOKEN: ${{ secrets.GITHUB_TOKEN }} + with: + charts_dir: deploy/charts \ No newline at end of file diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml new file mode 100644 index 0000000..da9de51 --- /dev/null +++ b/.github/workflows/pr.yaml @@ -0,0 +1,28 @@ +name: Checks (lint+test) + +on: + pull_request: + +jobs: + lint: + name: lint + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - uses: actions/setup-go@v4 + with: + go-version: '1.20' + cache: false + - name: golangci-lint + uses: golangci/golangci-lint-action@v3 + with: + version: latest + args: --timeout 5m + + test: + name: test + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - name: run tests using make + run: make test \ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..e917e5c --- /dev/null +++ b/.gitignore @@ -0,0 +1,26 @@ + +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib +bin +testbin/* +Dockerfile.cross + +# Test binary, build with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# Kubernetes Generated files - skip generated files, except for vendored files + +!vendor/**/zz_generated.* + +# editor and IDE paraphernalia +.idea +*.swp +*.swo +*~ diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..037c768 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,32 @@ +# Build the manager binary +FROM golang:1.19 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 main.go main.go +COPY controllers/ controllers/ +COPY internal/ internal/ +# 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=${TARGETARCH} go build -a -o manager main.go + +# Use distroless as minimal base image to package the manager binary +# Refer to https://github.com/GoogleContainerTools/distroless for more details +FROM gcr.io/distroless/static:nonroot +WORKDIR / +COPY --from=builder /workspace/manager . +USER 65532:65532 + +ENTRYPOINT ["/manager"] diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..a9197a5 --- /dev/null +++ b/Makefile @@ -0,0 +1,260 @@ +# VERSION defines the project version for the bundle. +# Update this value when you upgrade the version of your project. +# To re-generate a bundle for another specific version without changing the standard setup, you can: +# - use the VERSION as arg of the bundle target (e.g make bundle VERSION=0.0.2) +# - use environment variables to overwrite this value (e.g export VERSION=0.0.2) +VERSION ?= 0.0.1 + +# CHANNELS define the bundle channels used in the bundle. +# Add a new line here if you would like to change its default config. (E.g CHANNELS = "candidate,fast,stable") +# To re-generate a bundle for other specific channels without changing the standard setup, you can: +# - use the CHANNELS as arg of the bundle target (e.g make bundle CHANNELS=candidate,fast,stable) +# - use environment variables to overwrite this value (e.g export CHANNELS="candidate,fast,stable") +ifneq ($(origin CHANNELS), undefined) +BUNDLE_CHANNELS := --channels=$(CHANNELS) +endif + +# DEFAULT_CHANNEL defines the default channel used in the bundle. +# Add a new line here if you would like to change its default config. (E.g DEFAULT_CHANNEL = "stable") +# To re-generate a bundle for any other default channel without changing the default setup, you can: +# - use the DEFAULT_CHANNEL as arg of the bundle target (e.g make bundle DEFAULT_CHANNEL=stable) +# - use environment variables to overwrite this value (e.g export DEFAULT_CHANNEL="stable") +ifneq ($(origin DEFAULT_CHANNEL), undefined) +BUNDLE_DEFAULT_CHANNEL := --default-channel=$(DEFAULT_CHANNEL) +endif +BUNDLE_METADATA_OPTS ?= $(BUNDLE_CHANNELS) $(BUNDLE_DEFAULT_CHANNEL) + +# IMAGE_TAG_BASE defines the docker.io namespace and part of the image name for remote images. +# This variable is used to construct full image tags for bundle and catalog images. +# +# For example, running 'make bundle-build bundle-push catalog-build catalog-push' will build and push both +# projectcontour.io/contour-global-ratelimit-operator-bundle:$VERSION and projectcontour.io/contour-global-ratelimit-operator-catalog:$VERSION. +IMAGE_TAG_BASE ?= projectcontour.io/contour-global-ratelimit-operator + +# BUNDLE_IMG defines the image:tag used for the bundle. +# You can use it as an arg. (E.g make bundle-build BUNDLE_IMG=/:) +BUNDLE_IMG ?= $(IMAGE_TAG_BASE)-bundle:v$(VERSION) + +# BUNDLE_GEN_FLAGS are the flags passed to the operator-sdk generate bundle command +BUNDLE_GEN_FLAGS ?= -q --overwrite --version $(VERSION) $(BUNDLE_METADATA_OPTS) + +# USE_IMAGE_DIGESTS defines if images are resolved via tags or digests +# You can enable this value if you would like to use SHA Based Digests +# To enable set flag to true +USE_IMAGE_DIGESTS ?= false +ifeq ($(USE_IMAGE_DIGESTS), true) + BUNDLE_GEN_FLAGS += --use-image-digests +endif + +# 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 = 1.26.0 + +# 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 + +# 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 commands 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\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. + $(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..." + +.PHONY: fmt +fmt: ## Run go fmt against code. + go fmt ./... + +.PHONY: vet +vet: ## Run go vet against code. + go vet ./... + +.PHONY: test +test: manifests generate fmt vet envtest ## Run tests. + KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test ./... -coverprofile cover.out + +##@ Build + +.PHONY: build +build: manifests generate fmt vet ## Build manager binary. + go build -o bin/manager main.go + +.PHONY: run +run: manifests generate fmt vet ## Run a controller from your host. + go run ./main.go + +# If you wish built 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: test ## Build docker image with the manager. + docker build -t ${IMG} . + +.PHONY: docker-push +docker-push: ## Push docker image with the manager. + docker push ${IMG} + +# PLATFORMS defines the target platforms for the manager image be build to provide support to multiple +# architectures. (i.e. make docker-buildx IMG=myregistry/mypoperator:0.0.1). To use this option you need to: +# - able to use docker buildx . More info: https://docs.docker.com/build/buildx/ +# - have enable BuildKit, More info: https://docs.docker.com/develop/develop-images/build_enhancements/ +# - be able to push the image for your registry (i.e. if you do not inform a valid value via IMG=> then the export will fail) +# To properly provided solutions that supports more than one platform you should use this option. +PLATFORMS ?= linux/arm64,linux/amd64,linux/s390x,linux/ppc64le +.PHONY: docker-buildx +docker-buildx: test ## Build and push docker image for the manager for cross-platform support + # copy existing Dockerfile and insert --platform=${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 + - docker buildx create --name project-v3-builder + docker buildx use project-v3-builder + - docker buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross . + - docker buildx rm project-v3-builder + rm Dockerfile.cross + +##@ 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: ## 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 - + +##@ Build Dependencies + +## Location to install dependencies to +LOCALBIN ?= $(shell pwd)/bin +$(LOCALBIN): + mkdir -p $(LOCALBIN) + +## Tool Binaries +KUSTOMIZE ?= $(LOCALBIN)/kustomize +CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen +ENVTEST ?= $(LOCALBIN)/setup-envtest + +## Tool Versions +KUSTOMIZE_VERSION ?= v3.8.7 +CONTROLLER_TOOLS_VERSION ?= v0.11.1 + +KUSTOMIZE_INSTALL_SCRIPT ?= "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh" +.PHONY: kustomize +kustomize: $(KUSTOMIZE) ## Download kustomize locally if necessary. If wrong version is installed, it will be removed before downloading. +$(KUSTOMIZE): $(LOCALBIN) + @if test -x $(LOCALBIN)/kustomize && ! $(LOCALBIN)/kustomize version | grep -q $(KUSTOMIZE_VERSION); then \ + echo "$(LOCALBIN)/kustomize version is not expected $(KUSTOMIZE_VERSION). Removing it before installing."; \ + rm -rf $(LOCALBIN)/kustomize; \ + fi + test -s $(LOCALBIN)/kustomize || { curl -Ss $(KUSTOMIZE_INSTALL_SCRIPT) | bash -s -- $(subst v,,$(KUSTOMIZE_VERSION)) $(LOCALBIN); } + +.PHONY: controller-gen +controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary. If wrong version is installed, it will be overwritten. +$(CONTROLLER_GEN): $(LOCALBIN) + test -s $(LOCALBIN)/controller-gen && $(LOCALBIN)/controller-gen --version | grep -q $(CONTROLLER_TOOLS_VERSION) || \ + GOBIN=$(LOCALBIN) go install sigs.k8s.io/controller-tools/cmd/controller-gen@$(CONTROLLER_TOOLS_VERSION) + +.PHONY: envtest +envtest: $(ENVTEST) ## Download envtest-setup locally if necessary. +$(ENVTEST): $(LOCALBIN) + test -s $(LOCALBIN)/setup-envtest || GOBIN=$(LOCALBIN) go install sigs.k8s.io/controller-runtime/tools/setup-envtest@latest + +.PHONY: bundle +bundle: manifests kustomize ## Generate bundle manifests and metadata, then validate generated files. + operator-sdk generate kustomize manifests -q + cd config/manager && $(KUSTOMIZE) edit set image controller=$(IMG) + $(KUSTOMIZE) build config/manifests | operator-sdk generate bundle $(BUNDLE_GEN_FLAGS) + operator-sdk bundle validate ./bundle + +.PHONY: bundle-build +bundle-build: ## Build the bundle image. + docker build -f bundle.Dockerfile -t $(BUNDLE_IMG) . + +.PHONY: bundle-push +bundle-push: ## Push the bundle image. + $(MAKE) docker-push IMG=$(BUNDLE_IMG) + +.PHONY: opm +OPM = ./bin/opm +opm: ## Download opm locally if necessary. +ifeq (,$(wildcard $(OPM))) +ifeq (,$(shell which opm 2>/dev/null)) + @{ \ + set -e ;\ + mkdir -p $(dir $(OPM)) ;\ + OS=$(shell go env GOOS) && ARCH=$(shell go env GOARCH) && \ + curl -sSLo $(OPM) https://github.com/operator-framework/operator-registry/releases/download/v1.23.0/$${OS}-$${ARCH}-opm ;\ + chmod +x $(OPM) ;\ + } +else +OPM = $(shell which opm) +endif +endif + +# A comma-separated list of bundle images (e.g. make catalog-build BUNDLE_IMGS=example.com/operator-bundle:v0.1.0,example.com/operator-bundle:v0.2.0). +# These images MUST exist in a registry and be pull-able. +BUNDLE_IMGS ?= $(BUNDLE_IMG) + +# The image tag given to the resulting catalog image (e.g. make catalog-build CATALOG_IMG=example.com/operator-catalog:v0.2.0). +CATALOG_IMG ?= $(IMAGE_TAG_BASE)-catalog:v$(VERSION) + +# Set CATALOG_BASE_IMG to an existing catalog image tag to add $BUNDLE_IMGS to that image. +ifneq ($(origin CATALOG_BASE_IMG), undefined) +FROM_INDEX_OPT := --from-index $(CATALOG_BASE_IMG) +endif + +# Build a catalog image by adding bundle images to an empty catalog using the operator package manager tool, 'opm'. +# This recipe invokes 'opm' in 'semver' bundle add mode. For more information on add modes, see: +# https://github.com/operator-framework/community-operators/blob/7f1438c/docs/packaging-operator.md#updating-your-existing-operator +.PHONY: catalog-build +catalog-build: opm ## Build a catalog image. + $(OPM) index add --container-tool docker --mode semver --tag $(CATALOG_IMG) --bundles $(BUNDLE_IMGS) $(FROM_INDEX_OPT) + +# Push the catalog image. +.PHONY: catalog-push +catalog-push: ## Push a catalog image. + $(MAKE) docker-push IMG=$(CATALOG_IMG) diff --git a/PROJECT b/PROJECT new file mode 100644 index 0000000..e55859e --- /dev/null +++ b/PROJECT @@ -0,0 +1,18 @@ +# 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: projectcontour.io +layout: +- go.kubebuilder.io/v3 +plugins: + manifests.sdk.operatorframework.io/v2: {} + scorecard.sdk.operatorframework.io/v2: {} +projectName: contour-global-ratelimit-operator +repo: github.com/snapp-incubator/contour-global-ratelimit-operator +resources: +- controller: true + domain: projectcontour.io + kind: HTTPProxy + version: v1 +version: "3" diff --git a/README.md b/README.md index d0ad479..6a2a4f6 100644 --- a/README.md +++ b/README.md @@ -1 +1,164 @@ -# contour-global-ratelimit-operator + +# Contour Global Rate Limit Operator + +## Description + +The Contour Global Rate Limit Operator is a Kubernetes operator designed to read and parse Contour HTTPProxy objects, extract rate limit settings from the global rate limit section of HTTPProxy, and serve these configurations via the xDS protocol to a rate limit server. + +## Features + +- Parses Contour HTTPProxy objects to extract rate limit settings. +- Serves rate limit configurations via the xDS protocol to a rate limit server. +- Configures rate limits based on various descriptors and conditions. + +## Example + +### Contour HTTPProxy Object + +```yaml +apiVersion: projectcontour.io/v1 +kind: HTTPProxy +metadata: + name: echo + namespace: test +spec: + ingressClassName: private + virtualhost: + fqdn: my-test.example.com + routes: + - conditions: + - prefix: / + services: + - name: ingress-conformance-echo + port: 80 + rateLimitPolicy: + global: + descriptors: + - entries: + - genericKey: + key: test.echo.limit1 # Namespace.Name.optional_Name + value: "3/m" + - requestHeaderValueMatch: + headers: + - name: foo + exact: bar + value: bar + - entries: + - genericKey: + key: test.echo.limit2 # Namespace.Name.optional_Name + value: "4/m" + - requestHeader: + headerName: id + descriptorKey: id + - entries: + - genericKey: + key: test.echo.limit3 # Namespace.Name.optional_Name + value: "30/m" +``` + +### Generated Rate Limit Server Configuration + +```yaml +name: contour +domain: contour +descriptors: + - key: test.echo.limit1 + value: 3/m + descriptors: + - key: header_match + value: bar + ratelimit: + unit: minute + requestsperunit: 3 + unlimited: false + - key: test.echo.limit2 + value: 4/m + descriptors: + - key: id + value: "" + ratelimit: + unit: minute + requestsperunit: 4 + unlimited: false + - key: test.echo.limit3 + value: 30/m + ratelimit: + unit: minute + requestsperunit: 30 +``` + +## Usage + +To use the Contour Global Rate Limit Operator, you'll need a Kubernetes cluster. You can set up a local cluster for testing using [KIND](https://sigs.k8s.io/kind) or use a remote cluster. + +### Installation + +1. Install instances of custom resources: + + ```sh + kubectl apply -f config/samples/ + ``` + +2. Build and push your operator image to a container registry: + + ```sh + make docker-build docker-push IMG=/contour-global-ratelimit-operator:tag + ``` + +3. Deploy the operator to the cluster with the image specified by `IMG`: + + ```sh + make deploy IMG=/contour-global-ratelimit-operator:tag + ``` + +### Uninstallation + +To delete the custom resource definitions (CRDs) from the cluster: + +```sh +make uninstall +``` + +To undeploy the operator from the cluster: + +```sh +make undeploy +``` + +### How It Works + +This project follows the Kubernetes Operator pattern, utilizing controllers to manage resources and synchronize them to the desired state on the cluster. For detailed information, refer to the [Kubernetes Operator documentation](https://kubernetes.io/docs/concepts/extend-kubernetes/operator/). + +### Testing + +To test the operator: + +1. Install the CRDs into the cluster: + + ```sh + make install + ``` + +2. Run the operator (it will run in the foreground): + + ```sh + make run + ``` + +You can also install and run the operator in one step using `make install run`. + +### Modifying the API Definitions + +If you need to edit the API definitions, generate the manifests such as CRs or CRDs using: + +```sh +make manifests +``` + +For more information about available `make` targets, run `make --help`. + +## License + +Copyright © 2023. + +Licensed under the Apache License, Version 2.0. For more details, see the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0). diff --git a/config/default/kustomization.yaml b/config/default/kustomization.yaml new file mode 100644 index 0000000..69f0625 --- /dev/null +++ b/config/default/kustomization.yaml @@ -0,0 +1,72 @@ +# Adds namespace to all resources. +namespace: contour-rls-system + +# Value of this field is prepended to the +# names of all resources, e.g. a deployment named +# "wordpress" becomes "alices-wordpress". +# Note that it should also match with the prefix (text before '-') of the namespace +# field above. +namePrefix: contour-rls- + +# Labels to add to all resources and selectors. +#commonLabels: +# someName: someValue + +bases: +#- ../crd +- ../rbac +- ../manager +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in +# crd/kustomization.yaml +#- ../webhook +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. 'WEBHOOK' components are required. +#- ../certmanager +# [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'. +#- ../prometheus + +patchesStrategicMerge: +# Protect the /metrics endpoint by putting it behind auth. +# If you want your controller-manager to expose the /metrics +# endpoint w/o any authn/z, please comment the following line. +- manager_auth_proxy_patch.yaml + + + +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in +# crd/kustomization.yaml +#- manager_webhook_patch.yaml + +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. +# Uncomment 'CERTMANAGER' sections in crd/kustomization.yaml to enable the CA injection in the admission webhooks. +# 'CERTMANAGER' needs to be enabled to use ca injection +#- webhookcainjection_patch.yaml + +# the following config is for teaching kustomize how to do var substitution +vars: +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER' prefix. +#- name: CERTIFICATE_NAMESPACE # namespace of the certificate CR +# objref: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # this name should match the one in certificate.yaml +# fieldref: +# fieldpath: metadata.namespace +#- name: CERTIFICATE_NAME +# objref: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # this name should match the one in certificate.yaml +#- name: SERVICE_NAMESPACE # namespace of the service +# objref: +# kind: Service +# version: v1 +# name: webhook-service +# fieldref: +# fieldpath: metadata.namespace +#- name: SERVICE_NAME +# objref: +# kind: Service +# version: v1 +# name: webhook-service diff --git a/config/default/manager_auth_proxy_patch.yaml b/config/default/manager_auth_proxy_patch.yaml new file mode 100644 index 0000000..81052ba --- /dev/null +++ b/config/default/manager_auth_proxy_patch.yaml @@ -0,0 +1,59 @@ +# This patch inject a sidecar container which is a HTTP proxy for the +# controller manager, it performs RBAC authorization against the Kubernetes API using SubjectAccessReviews. +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system +spec: + template: + spec: + affinity: + nodeAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + nodeSelectorTerms: + - matchExpressions: + - key: kubernetes.io/arch + operator: In + values: + - amd64 + - arm64 + - ppc64le + - s390x + - key: kubernetes.io/os + operator: In + values: + - linux + containers: + - name: kube-rbac-proxy + securityContext: + allowPrivilegeEscalation: false + capabilities: + drop: + - "ALL" + image: gcr.io/kubebuilder/kube-rbac-proxy:v0.13.1 + args: + - "--secure-listen-address=0.0.0.0:8443" + - "--upstream=http://127.0.0.1:8080/" + - "--logtostderr=true" + - "--v=0" + ports: + - containerPort: 8443 + protocol: TCP + name: https + resources: + limits: + cpu: 500m + memory: 128Mi + requests: + cpu: 5m + memory: 64Mi + - name: manager + args: + - "--health-probe-bind-address=:8081" + - "--metrics-bind-address=127.0.0.1:8080" + - "--leader-elect" + ports: + - containerPort: 18000 + protocol: TCP + name: xds diff --git a/config/default/manager_config_patch.yaml b/config/default/manager_config_patch.yaml new file mode 100644 index 0000000..f6f5891 --- /dev/null +++ b/config/default/manager_config_patch.yaml @@ -0,0 +1,10 @@ +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system +spec: + template: + spec: + containers: + - name: manager diff --git a/config/manager/kustomization.yaml b/config/manager/kustomization.yaml new file mode 100644 index 0000000..5c5f0b8 --- /dev/null +++ b/config/manager/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- manager.yaml diff --git a/config/manager/manager.yaml b/config/manager/manager.yaml new file mode 100644 index 0000000..f4a31e2 --- /dev/null +++ b/config/manager/manager.yaml @@ -0,0 +1,102 @@ +apiVersion: v1 +kind: Namespace +metadata: + labels: + control-plane: controller-manager + app.kubernetes.io/name: namespace + app.kubernetes.io/instance: system + app.kubernetes.io/component: manager + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: system +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system + labels: + control-plane: controller-manager + app.kubernetes.io/name: deployment + app.kubernetes.io/instance: controller-manager + app.kubernetes.io/component: manager + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize +spec: + selector: + matchLabels: + control-plane: controller-manager + replicas: 1 + template: + metadata: + annotations: + kubectl.kubernetes.io/default-container: manager + labels: + control-plane: controller-manager + spec: + # TODO(user): Uncomment the following code to configure the nodeAffinity expression + # according to the platforms which are supported by your solution. + # It is considered best practice to support multiple architectures. You can + # build your manager image using the makefile target docker-buildx. + # affinity: + # nodeAffinity: + # requiredDuringSchedulingIgnoredDuringExecution: + # nodeSelectorTerms: + # - matchExpressions: + # - key: kubernetes.io/arch + # operator: In + # values: + # - amd64 + # - arm64 + # - ppc64le + # - s390x + # - key: kubernetes.io/os + # operator: In + # values: + # - linux + securityContext: + runAsNonRoot: true + # TODO(user): For common cases that do not require escalating privileges + # it is recommended to ensure that all your Pods/Containers are restrictive. + # More info: https://kubernetes.io/docs/concepts/security/pod-security-standards/#restricted + # Please uncomment the following code if your project does NOT have to work on old Kubernetes + # versions < 1.19 or on vendors versions which do NOT support this field by default (i.e. Openshift < 4.11 ). + # seccompProfile: + # type: RuntimeDefault + containers: + - command: + - /manager + args: + - --leader-elect + image: controller:latest + name: manager + securityContext: + allowPrivilegeEscalation: false + capabilities: + drop: + - "ALL" + livenessProbe: + httpGet: + path: /healthz + port: 8081 + initialDelaySeconds: 15 + periodSeconds: 20 + readinessProbe: + httpGet: + path: /readyz + port: 8081 + initialDelaySeconds: 5 + periodSeconds: 10 + # TODO(user): Configure the resources accordingly based on the project requirements. + # More info: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ + resources: + limits: + cpu: 500m + memory: 128Mi + requests: + cpu: 10m + memory: 64Mi + serviceAccountName: controller-manager + terminationGracePeriodSeconds: 10 diff --git a/config/manifests/kustomization.yaml b/config/manifests/kustomization.yaml new file mode 100644 index 0000000..4cff09c --- /dev/null +++ b/config/manifests/kustomization.yaml @@ -0,0 +1,27 @@ +# These resources constitute the fully configured set of manifests +# used to generate the 'manifests/' directory in a bundle. +resources: +- bases/contour-global-ratelimit-operator.clusterserviceversion.yaml +- ../default +- ../samples +- ../scorecard + +# [WEBHOOK] To enable webhooks, uncomment all the sections with [WEBHOOK] prefix. +# Do NOT uncomment sections with prefix [CERTMANAGER], as OLM does not support cert-manager. +# These patches remove the unnecessary "cert" volume and its manager container volumeMount. +#patchesJson6902: +#- target: +# group: apps +# version: v1 +# kind: Deployment +# name: controller-manager +# namespace: system +# patch: |- +# # Remove the manager container's "cert" volumeMount, since OLM will create and mount a set of certs. +# # Update the indices in this path if adding or removing containers/volumeMounts in the manager's Deployment. +# - op: remove +# path: /spec/template/spec/containers/1/volumeMounts/0 +# # Remove the "cert" volume, since OLM will create and mount a set of certs. +# # Update the indices in this path if adding or removing volumes in the manager's Deployment. +# - op: remove +# path: /spec/template/spec/volumes/0 diff --git a/config/prometheus/kustomization.yaml b/config/prometheus/kustomization.yaml new file mode 100644 index 0000000..ed13716 --- /dev/null +++ b/config/prometheus/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- monitor.yaml diff --git a/config/prometheus/monitor.yaml b/config/prometheus/monitor.yaml new file mode 100644 index 0000000..1764b0c --- /dev/null +++ b/config/prometheus/monitor.yaml @@ -0,0 +1,26 @@ + +# Prometheus Monitor Service (Metrics) +apiVersion: monitoring.coreos.com/v1 +kind: ServiceMonitor +metadata: + labels: + control-plane: controller-manager + app.kubernetes.io/name: servicemonitor + app.kubernetes.io/instance: controller-manager-metrics-monitor + app.kubernetes.io/component: metrics + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: controller-manager-metrics-monitor + namespace: system +spec: + endpoints: + - path: /metrics + port: https + scheme: https + bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token + tlsConfig: + insecureSkipVerify: true + selector: + matchLabels: + control-plane: controller-manager diff --git a/config/rbac/auth_proxy_client_clusterrole.yaml b/config/rbac/auth_proxy_client_clusterrole.yaml new file mode 100644 index 0000000..28b5dad --- /dev/null +++ b/config/rbac/auth_proxy_client_clusterrole.yaml @@ -0,0 +1,16 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + labels: + app.kubernetes.io/name: clusterrole + app.kubernetes.io/instance: metrics-reader + app.kubernetes.io/component: kube-rbac-proxy + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: metrics-reader +rules: +- nonResourceURLs: + - "/metrics" + verbs: + - get diff --git a/config/rbac/auth_proxy_role.yaml b/config/rbac/auth_proxy_role.yaml new file mode 100644 index 0000000..db21dd2 --- /dev/null +++ b/config/rbac/auth_proxy_role.yaml @@ -0,0 +1,24 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + labels: + app.kubernetes.io/name: clusterrole + app.kubernetes.io/instance: proxy-role + app.kubernetes.io/component: kube-rbac-proxy + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: proxy-role +rules: +- apiGroups: + - authentication.k8s.io + resources: + - tokenreviews + verbs: + - create +- apiGroups: + - authorization.k8s.io + resources: + - subjectaccessreviews + verbs: + - create diff --git a/config/rbac/auth_proxy_role_binding.yaml b/config/rbac/auth_proxy_role_binding.yaml new file mode 100644 index 0000000..3074377 --- /dev/null +++ b/config/rbac/auth_proxy_role_binding.yaml @@ -0,0 +1,19 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + labels: + app.kubernetes.io/name: clusterrolebinding + app.kubernetes.io/instance: proxy-rolebinding + app.kubernetes.io/component: kube-rbac-proxy + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: proxy-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: proxy-role +subjects: +- kind: ServiceAccount + name: controller-manager + namespace: system diff --git a/config/rbac/auth_proxy_service.yaml b/config/rbac/auth_proxy_service.yaml new file mode 100644 index 0000000..5676b64 --- /dev/null +++ b/config/rbac/auth_proxy_service.yaml @@ -0,0 +1,21 @@ +apiVersion: v1 +kind: Service +metadata: + labels: + control-plane: controller-manager + app.kubernetes.io/name: service + app.kubernetes.io/instance: controller-manager-metrics-service + app.kubernetes.io/component: kube-rbac-proxy + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: controller-manager-metrics-service + namespace: system +spec: + ports: + - name: https + port: 8443 + protocol: TCP + targetPort: https + selector: + control-plane: controller-manager diff --git a/config/rbac/kustomization.yaml b/config/rbac/kustomization.yaml new file mode 100644 index 0000000..731832a --- /dev/null +++ b/config/rbac/kustomization.yaml @@ -0,0 +1,18 @@ +resources: +# All RBAC will be applied under this service account in +# the deployment namespace. You may comment out this resource +# if your manager will use a service account that exists at +# runtime. Be sure to update RoleBinding and ClusterRoleBinding +# subjects if changing service account names. +- service_account.yaml +- role.yaml +- role_binding.yaml +- leader_election_role.yaml +- leader_election_role_binding.yaml +# Comment the following 4 lines if you want to disable +# the auth proxy (https://github.com/brancz/kube-rbac-proxy) +# which protects your /metrics endpoint. +- auth_proxy_service.yaml +- auth_proxy_role.yaml +- auth_proxy_role_binding.yaml +- auth_proxy_client_clusterrole.yaml diff --git a/config/rbac/leader_election_role.yaml b/config/rbac/leader_election_role.yaml new file mode 100644 index 0000000..01d1381 --- /dev/null +++ b/config/rbac/leader_election_role.yaml @@ -0,0 +1,44 @@ +# permissions to do leader election. +apiVersion: rbac.authorization.k8s.io/v1 +kind: Role +metadata: + labels: + app.kubernetes.io/name: role + app.kubernetes.io/instance: leader-election-role + app.kubernetes.io/component: rbac + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: leader-election-role +rules: +- apiGroups: + - "" + resources: + - configmaps + verbs: + - get + - list + - watch + - create + - update + - patch + - delete +- apiGroups: + - coordination.k8s.io + resources: + - leases + verbs: + - get + - list + - watch + - create + - update + - patch + - delete +- apiGroups: + - "" + resources: + - events + verbs: + - create + - patch diff --git a/config/rbac/leader_election_role_binding.yaml b/config/rbac/leader_election_role_binding.yaml new file mode 100644 index 0000000..10277ea --- /dev/null +++ b/config/rbac/leader_election_role_binding.yaml @@ -0,0 +1,19 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: RoleBinding +metadata: + labels: + app.kubernetes.io/name: rolebinding + app.kubernetes.io/instance: leader-election-rolebinding + app.kubernetes.io/component: rbac + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: leader-election-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: Role + name: leader-election-role +subjects: +- kind: ServiceAccount + name: controller-manager + namespace: system diff --git a/config/rbac/role.yaml b/config/rbac/role.yaml new file mode 100644 index 0000000..f5aa720 --- /dev/null +++ b/config/rbac/role.yaml @@ -0,0 +1,27 @@ +--- +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + creationTimestamp: null + name: manager-role +rules: +- apiGroups: + - projectcontour.io + resources: + - httpproxies + verbs: + - get + - list + - watch +- apiGroups: + - projectcontour.io + resources: + - httpproxies/finalizers + verbs: + - update +- apiGroups: + - projectcontour.io + resources: + - httpproxies/status + verbs: + - get diff --git a/config/rbac/role_binding.yaml b/config/rbac/role_binding.yaml new file mode 100644 index 0000000..67d5af8 --- /dev/null +++ b/config/rbac/role_binding.yaml @@ -0,0 +1,19 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + labels: + app.kubernetes.io/name: clusterrolebinding + app.kubernetes.io/instance: manager-rolebinding + app.kubernetes.io/component: rbac + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: manager-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: manager-role +subjects: +- kind: ServiceAccount + name: controller-manager + namespace: system diff --git a/config/rbac/service_account.yaml b/config/rbac/service_account.yaml new file mode 100644 index 0000000..8d1ece8 --- /dev/null +++ b/config/rbac/service_account.yaml @@ -0,0 +1,12 @@ +apiVersion: v1 +kind: ServiceAccount +metadata: + labels: + app.kubernetes.io/name: serviceaccount + app.kubernetes.io/instance: controller-manager + app.kubernetes.io/component: rbac + app.kubernetes.io/created-by: contour-global-ratelimit-operator + app.kubernetes.io/part-of: contour-global-ratelimit-operator + app.kubernetes.io/managed-by: kustomize + name: controller-manager + namespace: system diff --git a/config/samples/kustomization.yaml b/config/samples/kustomization.yaml new file mode 100644 index 0000000..b46cad2 --- /dev/null +++ b/config/samples/kustomization.yaml @@ -0,0 +1,4 @@ +## Append samples you want in your CSV to this file as resources ## +resources: +- _v1_httpproxy.yaml +#+kubebuilder:scaffold:manifestskustomizesamples diff --git a/config/scorecard/bases/config.yaml b/config/scorecard/bases/config.yaml new file mode 100644 index 0000000..c770478 --- /dev/null +++ b/config/scorecard/bases/config.yaml @@ -0,0 +1,7 @@ +apiVersion: scorecard.operatorframework.io/v1alpha3 +kind: Configuration +metadata: + name: config +stages: +- parallel: true + tests: [] diff --git a/config/scorecard/kustomization.yaml b/config/scorecard/kustomization.yaml new file mode 100644 index 0000000..50cd2d0 --- /dev/null +++ b/config/scorecard/kustomization.yaml @@ -0,0 +1,16 @@ +resources: +- bases/config.yaml +patchesJson6902: +- path: patches/basic.config.yaml + target: + group: scorecard.operatorframework.io + version: v1alpha3 + kind: Configuration + name: config +- path: patches/olm.config.yaml + target: + group: scorecard.operatorframework.io + version: v1alpha3 + kind: Configuration + name: config +#+kubebuilder:scaffold:patchesJson6902 diff --git a/config/scorecard/patches/basic.config.yaml b/config/scorecard/patches/basic.config.yaml new file mode 100644 index 0000000..0d79582 --- /dev/null +++ b/config/scorecard/patches/basic.config.yaml @@ -0,0 +1,10 @@ +- op: add + path: /stages/0/tests/- + value: + entrypoint: + - scorecard-test + - basic-check-spec + image: quay.io/operator-framework/scorecard-test:v1.29.0 + labels: + suite: basic + test: basic-check-spec-test diff --git a/config/scorecard/patches/olm.config.yaml b/config/scorecard/patches/olm.config.yaml new file mode 100644 index 0000000..59be415 --- /dev/null +++ b/config/scorecard/patches/olm.config.yaml @@ -0,0 +1,50 @@ +- op: add + path: /stages/0/tests/- + value: + entrypoint: + - scorecard-test + - olm-bundle-validation + image: quay.io/operator-framework/scorecard-test:v1.29.0 + labels: + suite: olm + test: olm-bundle-validation-test +- op: add + path: /stages/0/tests/- + value: + entrypoint: + - scorecard-test + - olm-crds-have-validation + image: quay.io/operator-framework/scorecard-test:v1.29.0 + labels: + suite: olm + test: olm-crds-have-validation-test +- op: add + path: /stages/0/tests/- + value: + entrypoint: + - scorecard-test + - olm-crds-have-resources + image: quay.io/operator-framework/scorecard-test:v1.29.0 + labels: + suite: olm + test: olm-crds-have-resources-test +- op: add + path: /stages/0/tests/- + value: + entrypoint: + - scorecard-test + - olm-spec-descriptors + image: quay.io/operator-framework/scorecard-test:v1.29.0 + labels: + suite: olm + test: olm-spec-descriptors-test +- op: add + path: /stages/0/tests/- + value: + entrypoint: + - scorecard-test + - olm-status-descriptors + image: quay.io/operator-framework/scorecard-test:v1.29.0 + labels: + suite: olm + test: olm-status-descriptors-test diff --git a/controllers/httpproxy_controller.go b/controllers/httpproxy_controller.go new file mode 100644 index 0000000..19a800d --- /dev/null +++ b/controllers/httpproxy_controller.go @@ -0,0 +1,90 @@ +/* +Copyright 2023. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controllers + +import ( + "context" + "strings" + + contourv1 "github.com/projectcontour/contour/apis/projectcontour/v1" + "github.com/snapp-incubator/contour-global-ratelimit-operator/internal/parser" + "github.com/snapp-incubator/contour-global-ratelimit-operator/internal/xdserver" + "k8s.io/apimachinery/pkg/api/errors" + "k8s.io/apimachinery/pkg/runtime" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/log" +) + +// HTTPProxyReconciler reconciles a HTTPProxy object +type HTTPProxyReconciler struct { + client.Client + Scheme *runtime.Scheme +} + +//+kubebuilder:rbac:groups=projectcontour.io,resources=httpproxies,verbs=get;list;watch; +//+kubebuilder:rbac:groups=projectcontour.io,resources=httpproxies/status,verbs=get; +//+kubebuilder:rbac:groups=projectcontour.io,resources=httpproxies/finalizers,verbs=update + +// Reconcile is part of the main kubernetes reconciliation loop which aims to +// move the current state of the cluster closer to the desired state. +func (r *HTTPProxyReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { + logger := log.FromContext(ctx) + + httproxy := &contourv1.HTTPProxy{} + getErr := r.Get(ctx, req.NamespacedName, httproxy) + if getErr != nil && errors.IsNotFound(getErr) { + if isDeleted := parser.ContourLimitConfigs.Delete(req.Namespace, req.Name); isDeleted { + xdserver.CreateNewSnapshot() + logger.Info("object is deleted from xds server") + + } + + return ctrl.Result{}, nil + } else if getErr != nil { + logger.Error(getErr, "Error getting operator resource object") + return ctrl.Result{}, getErr + + } + if strings.ToLower(httproxy.Status.CurrentStatus) != "valid" { + return ctrl.Result{}, nil + } + hasGlobalRateLimitPolicy, globalRateLimitPolicy, err := parser.ExtractDescriptorsFromHTTPProxy(httproxy) + if err != nil { + logger.Info(err.Error()) + } + if hasGlobalRateLimitPolicy { + + if addErr := parser.ContourLimitConfigs.AddToConfig(globalRateLimitPolicy); addErr != nil { + logger.Info(addErr.Error()) + } else { + xdserver.CreateNewSnapshot() + logger.Info("successfully added to the xds server") + + } + } + + return ctrl.Result{}, nil +} + +// SetupWithManager sets up the controller with the Manager. +func (r *HTTPProxyReconciler) SetupWithManager(mgr ctrl.Manager) error { + return ctrl.NewControllerManagedBy(mgr). + For(&contourv1.HTTPProxy{}). + //WithEventFilter(predicate.GenerationChangedPredicate{}). + Complete(r) +} diff --git a/controllers/suite_test.go b/controllers/suite_test.go new file mode 100644 index 0000000..e978106 --- /dev/null +++ b/controllers/suite_test.go @@ -0,0 +1,75 @@ +/* +Copyright 2023. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controllers + +import ( + "path/filepath" + "testing" + + . "github.com/onsi/ginkgo/v2" + . "github.com/onsi/gomega" + + "k8s.io/client-go/kubernetes/scheme" + "k8s.io/client-go/rest" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/envtest" + logf "sigs.k8s.io/controller-runtime/pkg/log" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + //+kubebuilder:scaffold:imports +) + +// These tests use Ginkgo (BDD-style Go testing framework). Refer to +// http://onsi.github.io/ginkgo/ to learn more about Ginkgo. + +var cfg *rest.Config +var k8sClient client.Client +var testEnv *envtest.Environment + +func TestAPIs(t *testing.T) { + RegisterFailHandler(Fail) + + RunSpecs(t, "Controller Suite") +} + +var _ = BeforeSuite(func() { + logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true))) + + By("bootstrapping test environment") + testEnv = &envtest.Environment{ + CRDDirectoryPaths: []string{filepath.Join("..", "config", "crd", "bases")}, + ErrorIfCRDPathMissing: false, + } + + var err error + // cfg is defined in this file globally. + cfg, err = testEnv.Start() + Expect(err).NotTo(HaveOccurred()) + Expect(cfg).NotTo(BeNil()) + + //+kubebuilder:scaffold:scheme + + k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme}) + Expect(err).NotTo(HaveOccurred()) + Expect(k8sClient).NotTo(BeNil()) + +}) + +var _ = AfterSuite(func() { + By("tearing down the test environment") + err := testEnv.Stop() + Expect(err).NotTo(HaveOccurred()) +}) diff --git a/examples/httproxy-sample.yaml b/examples/httproxy-sample.yaml new file mode 100644 index 0000000..1bcaf21 --- /dev/null +++ b/examples/httproxy-sample.yaml @@ -0,0 +1,45 @@ +apiVersion: projectcontour.io/v1 +kind: HTTPProxy +metadata: + name: echo + namespace: test +spec: + ingressClassName: private + virtualhost: + fqdn: my-test.example.com + routes: + - conditions: + - prefix: / + services: + - name: ingress-conformance-echo + port: 80 + rateLimitPolicy: + global: + descriptors: +# limit all requests which have header foo: bar (3 rpm) + - entries: + - genericKey: + key: test.echo.limit1 + value: "3/m" + - requestHeaderValueMatch: + headers: + - name: foo + exact: bar + value: bar + + +# limit all request which have header id: per value (3 rpm) + - entries: + - genericKey: + key: test.echo.limit2 + value: "4/m" + - requestHeader: + headerName: id + descriptorKey: id + +# limit all requests for a specific routes for 30 rpm + - entries: + - genericKey: + key: test.echo.limit3 + value: "30/m" + diff --git a/examples/rls-config.yaml b/examples/rls-config.yaml new file mode 100644 index 0000000..549bd4b --- /dev/null +++ b/examples/rls-config.yaml @@ -0,0 +1,26 @@ +name: contour +domain: contour +descriptors: + - key: test.echo.limit1 + value: 3/m + descriptors: + - key: header_match + value: bar + ratelimit: + unit: minute + requestsperunit: 3 + unlimited: false + - key: test.echo.limit2 + value: 4/m + descriptors: + - key: id + value: "" + ratelimit: + unit: minute + requestsperunit: 4 + unlimited: false + - key: test.echo.limit3 + value: 30/m + ratelimit: + unit: minute + requestsperunit: 30 diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..109a670 --- /dev/null +++ b/go.mod @@ -0,0 +1,85 @@ +module github.com/snapp-incubator/contour-global-ratelimit-operator + +go 1.19 + +require ( + github.com/envoyproxy/go-control-plane v0.11.1 + github.com/onsi/ginkgo/v2 v2.12.1 + github.com/onsi/gomega v1.27.10 + github.com/projectcontour/contour v1.26.1 + google.golang.org/grpc v1.57.1 + gopkg.in/yaml.v3 v3.0.1 + k8s.io/apimachinery v0.28.2 + k8s.io/client-go v0.28.2 + sigs.k8s.io/controller-runtime v0.16.2 +) + +require ( + github.com/beorn7/perks v1.0.1 // indirect + github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect + github.com/cespare/xxhash/v2 v2.2.0 // indirect + github.com/cncf/xds/go v0.0.0-20230607035331-e9ce68804cb4 // indirect + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/emicklei/go-restful/v3 v3.9.0 // indirect + github.com/envoyproxy/protoc-gen-validate v1.0.1 // indirect + github.com/evanphx/json-patch/v5 v5.6.0 // indirect + github.com/fsnotify/fsnotify v1.6.0 // indirect + github.com/go-logr/logr v1.2.4 // indirect + github.com/go-logr/zapr v1.2.4 // indirect + github.com/go-openapi/jsonpointer v0.19.6 // indirect + github.com/go-openapi/jsonreference v0.20.2 // indirect + github.com/go-openapi/swag v0.22.3 // indirect + github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.3 // indirect + github.com/google/gnostic v0.5.7-v3refs // indirect + github.com/google/gnostic-models v0.6.8 // indirect + github.com/google/go-cmp v0.5.9 // indirect + github.com/google/gofuzz v1.2.0 // indirect + github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 // indirect + github.com/google/uuid v1.3.0 // indirect + github.com/imdario/mergo v0.3.12 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/client_golang v1.16.0 // indirect + github.com/prometheus/client_model v0.4.0 // indirect + github.com/prometheus/common v0.44.0 // indirect + github.com/prometheus/procfs v0.10.1 // indirect + github.com/spf13/pflag v1.0.5 // indirect + go.uber.org/atomic v1.10.0 // indirect + go.uber.org/multierr v1.11.0 // indirect + go.uber.org/zap v1.25.0 // indirect + golang.org/x/exp v0.0.0-20230510235704-dd950f8aeaea // indirect + golang.org/x/lint v0.0.0-20210508222113-6edffad5e616 // indirect + golang.org/x/net v0.17.0 // indirect + golang.org/x/oauth2 v0.11.0 // indirect + golang.org/x/sys v0.13.0 // indirect + golang.org/x/term v0.13.0 // indirect + golang.org/x/text v0.13.0 // indirect + golang.org/x/time v0.3.0 // indirect + golang.org/x/tools v0.14.0 // indirect + gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/genproto v0.0.0-20230526203410-71b5a4ffd15e // indirect + google.golang.org/genproto/googleapis/api v0.0.0-20230526203410-71b5a4ffd15e // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20230526203410-71b5a4ffd15e // indirect + google.golang.org/protobuf v1.31.0 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + k8s.io/api v0.28.2 // indirect + k8s.io/apiextensions-apiserver v0.28.2 // indirect + k8s.io/component-base v0.28.2 // indirect + k8s.io/klog/v2 v2.100.1 // indirect + k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 // indirect + k8s.io/utils v0.0.0-20230505201702-9f6742963106 // indirect + sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect + sigs.k8s.io/yaml v1.3.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..f16b6a8 --- /dev/null +++ b/go.sum @@ -0,0 +1,738 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= +cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= +cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= +cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= +cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= +cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= +cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= +cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= +cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk= +cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs= +cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc= +cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY= +cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= +cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= +cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc= +cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg= +cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc= +cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ= +cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= +cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk= +cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= +cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw= +cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA= +cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU= +cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= +cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos= +cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk= +cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs= +cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0= +dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 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http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ \ No newline at end of file diff --git a/internal/parser/convert.go b/internal/parser/convert.go new file mode 100644 index 0000000..ca93ea6 --- /dev/null +++ b/internal/parser/convert.go @@ -0,0 +1,70 @@ +package parser + +import ( + "strconv" + "strings" + + rls_config "github.com/envoyproxy/go-control-plane/ratelimit/config/ratelimit/v3" +) + +// convertToRateLimitDescriptors converts a slice of localDescriptors to a slice of RateLimitDescriptors. +func convertToRateLimitDescriptors(localDescriptors []Descriptor) []*rls_config.RateLimitDescriptor { + descriptors := make([]*rls_config.RateLimitDescriptor, len(localDescriptors)) + + for i, localDescriptor := range localDescriptors { + descriptors[i] = convertToRateLimitDescriptor(localDescriptor) + } + + return descriptors +} + +// convertToRateLimitDescriptor converts a localDescriptor to a RateLimitDescriptor. +func convertToRateLimitDescriptor(localDescriptor Descriptor) *rls_config.RateLimitDescriptor { + // Helper function to convert a RateLimit struct to a RateLimitPolicy struct + convertRateLimit := func(r RateLimit) *rls_config.RateLimitPolicy { + + if r.Unit == "" || r.RequestsPerUnit == "" { + return nil + } + + policy := &rls_config.RateLimitPolicy{} + switch strings.ToLower(r.Unit) { + case "s": + policy.Unit = rls_config.RateLimitUnit_SECOND + case "m": + policy.Unit = rls_config.RateLimitUnit_MINUTE + case "h": + policy.Unit = rls_config.RateLimitUnit_HOUR + case "d": + policy.Unit = rls_config.RateLimitUnit_DAY + } + requestPerUnit, _ := strconv.ParseUint(r.RequestsPerUnit, 10, 32) + + policy.RequestsPerUnit = uint32(requestPerUnit) + + return policy + } + + // Helper function to convert a slice of Descriptors to a slice of RateLimitDescriptors + convertDescriptors := func(descriptors []Descriptor) []*rls_config.RateLimitDescriptor { + if len(descriptors) == 0 { + return nil + } + + rateLimitDescriptors := make([]*rls_config.RateLimitDescriptor, 0) + + for _, desc := range descriptors { + rateLimitDescriptors = append(rateLimitDescriptors, convertToRateLimitDescriptor(desc)) + } + + return rateLimitDescriptors + } + + // Create and return the RateLimitDescriptor + return &rls_config.RateLimitDescriptor{ + Key: localDescriptor.Key, + Value: localDescriptor.Value, + RateLimit: convertRateLimit(localDescriptor.RateLimit), + Descriptors: convertDescriptors(localDescriptor.Descriptors), + } +} diff --git a/internal/parser/extract_RateLimitConfig.go b/internal/parser/extract_RateLimitConfig.go new file mode 100644 index 0000000..939be1c --- /dev/null +++ b/internal/parser/extract_RateLimitConfig.go @@ -0,0 +1,76 @@ +package parser + +import ( + "fmt" + "sync" + + rls_config "github.com/envoyproxy/go-control-plane/ratelimit/config/ratelimit/v3" +) + +// ContourLimitConfigs is a global instance of LimitConfigs for the "contour" domain. +var ContourLimitConfigs = NewLimitConfigs("contour") + +// LimitConfigs is a configuration for rate limiting. +type LimitConfigs struct { + rateLimitConfig rls_config.RateLimitConfig + descriptorMaps map[string]*rls_config.RateLimitDescriptor + mutex sync.Mutex +} + +// NewLimitConfigs creates a new instance of LimitConfigs with the specified domain. +func NewLimitConfigs(domain string) *LimitConfigs { + limitConf := &LimitConfigs{} + limitConf.setDomain(domain) + limitConf.descriptorMaps = make(map[string]*rls_config.RateLimitDescriptor) + return limitConf +} + +// GetConfigs returns the rate limit configuration. +func (a *LimitConfigs) GetConfigs() *rls_config.RateLimitConfig { + a.mutex.Lock() + defer a.mutex.Unlock() + a.rateLimitConfig.Descriptors = nil + a.rateLimitConfig.Descriptors = make([]*rls_config.RateLimitDescriptor, 0) + for _, d := range a.descriptorMaps { + a.rateLimitConfig.Descriptors = append(a.rateLimitConfig.Descriptors, d) + } + if len(a.rateLimitConfig.Descriptors) == 0 { + return nil + } + return &a.rateLimitConfig +} + +// AddToConfig adds rate limit policies to the configuration. +func (a *LimitConfigs) AddToConfig(policy HTTPProxyGlobalRateLimitPolicy) error { + descriptors := convertToRateLimitDescriptors(policy.RateLimitsDescriptors) + if descriptors != nil { + a.mutex.Lock() + defer a.mutex.Unlock() + for _, d := range descriptors { + a.descriptorMaps[d.Key] = d + } + return nil + } + return fmt.Errorf("descriptors is empty") +} + +// Delete removes rate limit policies associated with a namespace and name. +func (a *LimitConfigs) Delete(namespace string, name string) (deleted bool) { + a.mutex.Lock() + defer a.mutex.Unlock() + for _, d := range a.descriptorMaps { + if isGenericKeyContainNameNamespace(d.Key, name, namespace) { + delete(a.descriptorMaps, d.Key) + deleted = true + } + } + return deleted +} + +// setDomain sets the domain and name of the rate limit configuration. +func (a *LimitConfigs) setDomain(name string) { + a.mutex.Lock() + defer a.mutex.Unlock() + a.rateLimitConfig.Domain = name + a.rateLimitConfig.Name = name +} diff --git a/internal/parser/extract_RateLimitDescriptor.go b/internal/parser/extract_RateLimitDescriptor.go new file mode 100644 index 0000000..d0fe8ef --- /dev/null +++ b/internal/parser/extract_RateLimitDescriptor.go @@ -0,0 +1,187 @@ +package parser + +import ( + "fmt" + "strconv" + "strings" + + contourv1 "github.com/projectcontour/contour/apis/projectcontour/v1" +) + +// HTTPProxyGlobalRateLimitPolicy represents a global rate limit policy. +type HTTPProxyGlobalRateLimitPolicy struct { + Name string + Namespace string + IngressClass string // IngressClass is equivalent to the domain + RateLimitsDescriptors []Descriptor +} + +// Descriptor represents a rate limit descriptor. +type Descriptor struct { + Key string + Value string + RateLimit RateLimit + ShadowMode bool + Descriptors []Descriptor +} + +// RateLimit represents rate limit details. +type RateLimit struct { + Unit string + RequestsPerUnit string +} + +// ExtractDescriptorsFromHTTPProxy extracts rate limit descriptors from an HTTPProxy. +func ExtractDescriptorsFromHTTPProxy(httpProxy *contourv1.HTTPProxy) (hasRateLimitConfig bool, policies HTTPProxyGlobalRateLimitPolicy, err error) { + // Initialize the global rate limit policy + globalRateLimitPolicy := HTTPProxyGlobalRateLimitPolicy{ + Name: httpProxy.Name, + Namespace: httpProxy.Namespace, + IngressClass: httpProxy.Spec.IngressClassName, + } + + for _, route := range httpProxy.Spec.Routes { + if route.RateLimitPolicy != nil && route.RateLimitPolicy.Global != nil { + hasRateLimitConfig = true + + // Extract descriptors from the global rate limit policy + descriptors, extractErr := extractDescriptorsFromGlobalRateLimitPolicy(route.RateLimitPolicy.Global, globalRateLimitPolicy.Name, globalRateLimitPolicy.Namespace) + if extractErr != nil { + return false, HTTPProxyGlobalRateLimitPolicy{}, extractErr + } + // Append the extracted descriptors to the global rate limit policy + globalRateLimitPolicy.RateLimitsDescriptors = append(globalRateLimitPolicy.RateLimitsDescriptors, descriptors...) + } + } + + return hasRateLimitConfig, globalRateLimitPolicy, err +} + +// extractDescriptorsFromGlobalRateLimitPolicy extracts descriptors from a GlobalRateLimitPolicy. +func extractDescriptorsFromGlobalRateLimitPolicy(policy *contourv1.GlobalRateLimitPolicy, name string, namespace string) ([]Descriptor, error) { + var descriptors []Descriptor + for _, contourDescriptor := range policy.Descriptors { + var entryDescriptor Descriptor + var limit RateLimit + for i, entry := range contourDescriptor.Entries { + descriptor, rateLimit, err := extractDescriptorFromEntry(entry, name, namespace) + if err != nil { + return descriptors, err + } + if i == 0 { + limit = rateLimit + entryDescriptor = descriptor + // The first entry must be a genericKey and may not have a second entry. + if len(contourDescriptor.Entries) == 1 && entry.GenericKey != nil { + entryDescriptor.RateLimit = limit + descriptors = append(descriptors, entryDescriptor) + } + } + if i == 1 && entryDescriptor.Key != "" { + descriptor.RateLimit = limit + entryDescriptor.Descriptors = append(entryDescriptor.Descriptors, descriptor) + descriptors = append(descriptors, entryDescriptor) + } + } + } + return descriptors, nil +} + +// extractDescriptorFromEntry extracts a descriptor and rate limit from a RateLimitDescriptorEntry. +func extractDescriptorFromEntry(entry contourv1.RateLimitDescriptorEntry, name string, namespace string) (Descriptor, RateLimit, error) { + switch { + case entry.GenericKey != nil: + genericDescriptor, limit, err := extractDescriptorFromGenericKey(entry.GenericKey, name, namespace) + if err != nil { + return Descriptor{}, RateLimit{}, err + } + return genericDescriptor, limit, nil + + case entry.RequestHeader != nil: + requestHeaderDescriptor, err := extractDescriptorFromRequestHeader(entry.RequestHeader) + if err != nil { + return Descriptor{}, RateLimit{}, err + } + return requestHeaderDescriptor, RateLimit{}, nil + + case entry.RequestHeaderValueMatch != nil: + headerValueMatchDescriptor, err := extractDescriptorFromRequestHeaderValueMatch(entry.RequestHeaderValueMatch) + if err != nil { + return Descriptor{}, RateLimit{}, err + } + return headerValueMatchDescriptor, RateLimit{}, nil + + case entry.RemoteAddress != nil: + remoteAddr, err := extractDescriptorsFromRemoteAddress(*entry.RemoteAddress) + return remoteAddr, RateLimit{}, err + default: + return Descriptor{}, RateLimit{}, fmt.Errorf("RateLimitDescriptorEntry not found") + } +} + +// extractDescriptorFromGenericKey extracts a descriptor and rate limit from a GenericKeyDescriptor. +func extractDescriptorFromGenericKey(genericKey *contourv1.GenericKeyDescriptor, name string, namespace string) (Descriptor, RateLimit, error) { + key := genericKey.Key + val := genericKey.Value + if !isGenericKeyContainNameNamespace(key, name, namespace) { + err := fmt.Errorf("%v is not valid", key) + return Descriptor{}, RateLimit{}, err + } + limit, err := generateRateLimitFromGenericKeyValue(val, name, namespace) + if err != nil { + return Descriptor{}, RateLimit{}, err + } + return Descriptor{ + Key: key, + Value: val, + }, limit, nil +} + +// isGenericKeyContainNameNamespace checks if a key contains the specified name and namespace. +func isGenericKeyContainNameNamespace(key string, name string, namespace string) bool { + return strings.HasPrefix(key, fmt.Sprintf("%v.%v.", namespace, name)) +} + +// extractDescriptorFromRequestHeader extracts a descriptor from a RequestHeaderDescriptor. +func extractDescriptorFromRequestHeader(requestHeader *contourv1.RequestHeaderDescriptor) (Descriptor, error) { + key := requestHeader.DescriptorKey + return Descriptor{ + Key: key, + }, nil +} + +// extractDescriptorFromRequestHeaderValueMatch extracts a descriptor from a RequestHeaderValueMatchDescriptor. +func extractDescriptorFromRequestHeaderValueMatch(headerValueMatch *contourv1.RequestHeaderValueMatchDescriptor) (Descriptor, error) { + return Descriptor{ + Key: "header_match", + Value: headerValueMatch.Value, + }, nil +} + +// extractDescriptorsFromRemoteAddress extracts a descriptor from a RemoteAddressDescriptor. +func extractDescriptorsFromRemoteAddress(address contourv1.RemoteAddressDescriptor) (Descriptor, error) { + return Descriptor{ + Key: "remote_address", + }, nil +} + +// generateRateLimitFromGenericKeyValue generates a RateLimit from a generic key value. +func generateRateLimitFromGenericKeyValue(value string, name string, namespace string) (RateLimit, error) { + valParts := strings.Split(value, "/") + if len(valParts) != 2 { + return RateLimit{}, fmt.Errorf("value %v has an invalid format", value) + } + requestsPerUnit, err := strconv.ParseUint(valParts[0], 10, 32) + if err != nil { + return RateLimit{}, err + } + unit := valParts[1] + validUnits := map[string]bool{"s": true, "m": true, "h": true, "d": true} + if !validUnits[unit] { + return RateLimit{}, fmt.Errorf("value must be s, m, h, or d: %v", value) + } + return RateLimit{ + RequestsPerUnit: fmt.Sprintf("%v", requestsPerUnit), + Unit: unit, + }, nil +} diff --git a/internal/xdserver/callback.go b/internal/xdserver/callback.go new file mode 100644 index 0000000..81a5469 --- /dev/null +++ b/internal/xdserver/callback.go @@ -0,0 +1,110 @@ +package xdserver + +import ( + "context" + "sync" + + core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3" + discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3" + "github.com/envoyproxy/go-control-plane/pkg/server/v3" +) + +// Callbacks is a struct that handles xDS callbacks. +type Callbacks struct { + Signal chan struct{} + Debug bool + Fetches int + Requests int + DeltaRequests int + DeltaResponses int + mu sync.Mutex +} + +var _ server.Callbacks = &Callbacks{} + +// Report logs callback statistics. +func (cb *Callbacks) Report() { + cb.mu.Lock() + defer cb.mu.Unlock() + logger.Infof("Server callbacks: fetches=%d requests=%d\n", cb.Fetches, cb.Requests) +} + +// OnStreamOpen handles the opening of a stream. +func (cb *Callbacks) OnStreamOpen(_ context.Context, id int64, typ string) error { + if cb.Debug { + logger.Infof("Stream %d opened for %s\n", id, typ) + } + return nil +} + +// OnStreamClosed handles the closing of a stream. +func (cb *Callbacks) OnStreamClosed(id int64, node *core.Node) { + if cb.Debug { + logger.Infof("Stream %d of node %s closed\n", id, node.Id) + } +} + +// OnDeltaStreamOpen handles the opening of a delta stream. +func (cb *Callbacks) OnDeltaStreamOpen(_ context.Context, id int64, typ string) error { + if cb.Debug { + logger.Infof("Delta stream %d opened for %s\n", id, typ) + } + return nil +} + +// OnDeltaStreamClosed handles the closing of a delta stream. +func (cb *Callbacks) OnDeltaStreamClosed(id int64, node *core.Node) { + if cb.Debug { + logger.Infof("Delta stream %d of node %s closed\n", id, node.Id) + } +} + +// OnStreamRequest handles a stream request. +func (cb *Callbacks) OnStreamRequest(int64, *discovery.DiscoveryRequest) error { + cb.mu.Lock() + defer cb.mu.Unlock() + cb.Requests++ + if cb.Signal != nil { + close(cb.Signal) + cb.Signal = nil + } + return nil +} + +// OnStreamResponse handles a stream response. +func (cb *Callbacks) OnStreamResponse(context.Context, int64, *discovery.DiscoveryRequest, *discovery.DiscoveryResponse) { +} + +// OnStreamDeltaResponse handles a delta stream response. +func (cb *Callbacks) OnStreamDeltaResponse(int64, *discovery.DeltaDiscoveryRequest, *discovery.DeltaDiscoveryResponse) { + cb.mu.Lock() + defer cb.mu.Unlock() + cb.DeltaResponses++ +} + +// OnStreamDeltaRequest handles a delta stream request. +func (cb *Callbacks) OnStreamDeltaRequest(int64, *discovery.DeltaDiscoveryRequest) error { + cb.mu.Lock() + defer cb.mu.Unlock() + cb.DeltaRequests++ + if cb.Signal != nil { + close(cb.Signal) + cb.Signal = nil + } + return nil +} + +// OnFetchRequest handles a fetch request. +func (cb *Callbacks) OnFetchRequest(context.Context, *discovery.DiscoveryRequest) error { + cb.mu.Lock() + defer cb.mu.Unlock() + cb.Fetches++ + if cb.Signal != nil { + close(cb.Signal) + cb.Signal = nil + } + return nil +} + +// OnFetchResponse handles a fetch response. +func (cb *Callbacks) OnFetchResponse(*discovery.DiscoveryRequest, *discovery.DiscoveryResponse) {} diff --git a/internal/xdserver/logger.go b/internal/xdserver/logger.go new file mode 100644 index 0000000..f6c6915 --- /dev/null +++ b/internal/xdserver/logger.go @@ -0,0 +1,36 @@ +package xdserver + +import ( + "log" +) + +func init() { + logger = Logger{} +} + +// Logger is a custom logger with different log levels. +type Logger struct { + Debug bool +} + +// Debugf logs a debug message if Debug is true. +func (logger Logger) Debugf(format string, args ...interface{}) { + if logger.Debug { + log.Printf("\t\tDEBUG\t"+format+"%v\n", args...) + } +} + +// Infof logs an informational message. +func (logger Logger) Infof(format string, args ...interface{}) { + log.Printf("\t\tINFO\t"+format+"%v\n", args...) +} + +// Warnf logs a warning message. +func (logger Logger) Warnf(format string, args ...interface{}) { + log.Printf("\t\tWARN\t"+format+"%v\n", args...) +} + +// Errorf logs an error message. +func (logger Logger) Errorf(format string, args ...interface{}) { + log.Printf("\t\tERROR\t"+format+"\n", args...) +} diff --git a/internal/xdserver/resource.go b/internal/xdserver/resource.go new file mode 100644 index 0000000..aec1c1d --- /dev/null +++ b/internal/xdserver/resource.go @@ -0,0 +1,70 @@ +package xdserver + +import ( + "context" + "fmt" + "os" + "sync" + + "github.com/envoyproxy/go-control-plane/pkg/cache/types" + "github.com/envoyproxy/go-control-plane/pkg/cache/v3" + "github.com/envoyproxy/go-control-plane/pkg/resource/v3" + "github.com/snapp-incubator/contour-global-ratelimit-operator/internal/parser" +) + +// MakeRlsConfig creates rate limit config resources. +func MakeRlsConfig() []types.Resource { + return []types.Resource{ + parser.ContourLimitConfigs.GetConfigs(), + } +} + +// GenerateSnapshot generates an xDS snapshot for the given version. +func GenerateSnapshot(version string) *cache.Snapshot { + snap, _ := cache.NewSnapshot(version, + map[resource.Type][]types.Resource{ + resource.RateLimitConfigType: MakeRlsConfig(), + }, + ) + return snap +} + +var snapshotCache = cache.NewSnapshotCache(true, cache.IDHash{}, logger) +var snapShotVersion int +var snapShotMutex sync.Mutex + +// CreateNewSnapshot creates and serves a new snapshot. +func CreateNewSnapshot() { + version := func() (version string) { + snapShotMutex.Lock() + snapShotVersion++ + version = fmt.Sprint(snapShotVersion) + snapShotMutex.Unlock() + return + + }() + + // Generate a snapshot + snapshot := GenerateSnapshot(version) + + // Check if the snapshot is empty for "contour" + if m := snapshot.GetResources(resource.RateLimitConfigType); m["contour"] == nil { + logger.Errorf("Snapshot is empty for : %+v\n%+v", NodeID) + return + } + + // Check if the snapshot is consistent + if err := snapshot.Consistent(); err != nil { + logger.Errorf("Snapshot is inconsistent: %+v\n%+v", snapshot, err) + os.Exit(1) + } + + logger.Debugf("Will serve snapshot %+v", snapshot) + + // Add the snapshot to the cache + if err := snapshotCache.SetSnapshot(context.Background(), NodeID, snapshot); err != nil { + logger.Errorf("Snapshot error %q for %+v", err, snapshot) + os.Exit(1) + } + logger.Infof("New version of Snapshot is Created: ", version) +} diff --git a/internal/xdserver/server.go b/internal/xdserver/server.go new file mode 100644 index 0000000..4991b5a --- /dev/null +++ b/internal/xdserver/server.go @@ -0,0 +1,64 @@ +package xdserver + +import ( + "context" + "fmt" + "log" + "net" + "time" + + "google.golang.org/grpc" + "google.golang.org/grpc/keepalive" + + discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3" + "github.com/envoyproxy/go-control-plane/pkg/server/v3" +) + +const ( + grpcKeepaliveTime = 30 * time.Second + grpcKeepaliveTimeout = 5 * time.Second + grpcKeepaliveMinTime = 30 * time.Second + grpcMaxConcurrentStreams = 1000000 +) + +var ( + logger Logger + //Port is XDS server Port. + Port int + //NodeID is ID of RLS server. + NodeID string + //DebugLog is switch for enabeling debug log of xds server. + DebugLog bool +) + +// RunServer starts an xDS server at the given port. +func RunServer() { + logger.Debug = DebugLog + ctx := context.Background() + cb := &Callbacks{Debug: logger.Debug} + srv := server.NewServer(ctx, snapshotCache, cb) + + grpcServer := grpc.NewServer( + grpc.MaxConcurrentStreams(grpcMaxConcurrentStreams), + grpc.KeepaliveParams(keepalive.ServerParameters{ + Time: grpcKeepaliveTime, + Timeout: grpcKeepaliveTimeout, + }), + grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{ + MinTime: grpcKeepaliveMinTime, + PermitWithoutStream: true, + }), + ) + + lis, err := net.Listen("tcp", fmt.Sprintf(":%d", Port)) + if err != nil { + log.Fatalf("Failed to listen: %v", err) + } + + discovery.RegisterAggregatedDiscoveryServiceServer(grpcServer, srv) + + logger.Infof("XDS server listening on %d for NodeID %v\n", Port, NodeID) + if err = grpcServer.Serve(lis); err != nil { + log.Fatalf("Server error: %v", err) + } +} diff --git a/main.go b/main.go new file mode 100644 index 0000000..d08b713 --- /dev/null +++ b/main.go @@ -0,0 +1,121 @@ +/* +Copyright 2023. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package main + +import ( + "flag" + "os" + + // Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.) + // to ensure that exec-entrypoint and run can make use of them. + _ "k8s.io/client-go/plugin/pkg/client/auth" + + contourv1 "github.com/projectcontour/contour/apis/projectcontour/v1" + "k8s.io/apimachinery/pkg/runtime" + utilruntime "k8s.io/apimachinery/pkg/util/runtime" + clientgoscheme "k8s.io/client-go/kubernetes/scheme" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/healthz" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + "sigs.k8s.io/controller-runtime/pkg/metrics/server" + + "github.com/snapp-incubator/contour-global-ratelimit-operator/controllers" + "github.com/snapp-incubator/contour-global-ratelimit-operator/internal/xdserver" + //+kubebuilder:scaffold:imports +) + +var ( + scheme = runtime.NewScheme() + setupLog = ctrl.Log.WithName("setup") +) + +func init() { + utilruntime.Must(clientgoscheme.AddToScheme(scheme)) + utilruntime.Must(contourv1.AddToScheme(scheme)) + //+kubebuilder:scaffold:scheme +} + +func main() { + var metricsAddr string + var enableLeaderElection bool + var probeAddr string + flag.BoolVar(&xdserver.DebugLog, "xds-server-debug-log", false, "Turn On XDS Debug logs") + flag.StringVar(&xdserver.NodeID, "xds-node-id", "default", "The XDS Node ID") + flag.IntVar(&xdserver.Port, "xds-server-port", 18000, "The XDS Server Port") + flag.StringVar(&metricsAddr, "metrics-bind-address", ":8082", "The address the metric endpoint binds to.") + flag.StringVar(&probeAddr, "health-probe-bind-address", ":8083", "The address the probe endpoint binds to.") + flag.BoolVar(&enableLeaderElection, "leader-elect", false, + "Enable leader election for controller manager. "+ + "Enabling this will ensure there is only one active controller manager.") + opts := zap.Options{ + Development: true, + } + opts.BindFlags(flag.CommandLine) + flag.Parse() + + ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts))) + + mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{ + Scheme: scheme, + //MetricsBindAddress: metricsAddr, + Metrics: server.Options{BindAddress: metricsAddr}, + //Port: 9443, + HealthProbeBindAddress: probeAddr, + LeaderElection: enableLeaderElection, + LeaderElectionID: "e5a7b1da.projectcontour.io", + // LeaderElectionReleaseOnCancel defines if the leader should step down voluntarily + // when the Manager ends. This requires the binary to immediately end when the + // Manager is stopped, otherwise, this setting is unsafe. Setting this significantly + // speeds up voluntary leader transitions as the new leader don't have to wait + // LeaseDuration time first. + // + // In the default scaffold provided, the program ends immediately after + // the manager stops, so would be fine to enable this option. However, + // if you are doing or is intended to do any operation such as perform cleanups + // after the manager stops then its usage might be unsafe. + // LeaderElectionReleaseOnCancel: true, + }) + if err != nil { + setupLog.Error(err, "unable to start manager") + os.Exit(1) + } + + if err = (&controllers.HTTPProxyReconciler{ + Client: mgr.GetClient(), + Scheme: mgr.GetScheme(), + }).SetupWithManager(mgr); err != nil { + setupLog.Error(err, "unable to create controller", "controller", "HTTPProxy") + os.Exit(1) + } + //+kubebuilder:scaffold:builder + + if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil { + setupLog.Error(err, "unable to set up health check") + os.Exit(1) + } + if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil { + setupLog.Error(err, "unable to set up ready check") + os.Exit(1) + } + + setupLog.Info("starting manager") + go xdserver.RunServer() + if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil { + setupLog.Error(err, "problem running manager") + os.Exit(1) + } +}