Release 0.0.1

.github/workflows/release.yml

@@ -0,0 +1,36 @@
+on:
+  release:
+    types: [published]
+
+name: Publish Docker image
+jobs:
+  push_to_registries:
+    name: Push Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: ${{ runner.os }}-buildx-
+
+      - name: Get tag
+        id: tag
+        uses: dawidd6/action-get-tag@v1
+
+      - name: Build and Push
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: ghcr.io/${{ github.repository_owner }}/aida-schedulder:${{ steps.tag.outputs.tag }},ghcr.io/${{ github.repository_owner }}/aida-schedulder:latest

.github/workflows/test.yml

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+on:
+  push:
+    branches:
+      - main
+      - develop
+  pull_request:
+    branches:
+      - develop
+
+name: Test
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version: [1.16.x]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.39
+      - name: Test
+        run: go test --coverprofile=coverage.out ./...
+

Dockerfile

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+FROM golang:1.16-alpine
+
+WORKDIR /code
+
+COPY . .
+RUN go build && mv aida-scheduler /aida-scheduler
+
+WORKDIR /
+RUN rm -rf /code
+
+CMD /aida-scheduler

README.md

@@ -1 +1,107 @@
-# scheduler
+# aida-scheduler
+
+[![Test](https://github.com/aida-dos/aida-scheduler/actions/workflows/test.yml/badge.svg?branch=develop)](https://github.com/aida-dos/aida-scheduler/actions/workflows/test.yml)
+
+## Deployment
+
+```shell
+kubectl apply -f examples/release_scheduler_crd.yaml
+```
+
+### Build custom docker image
+```shell
+docker build -t aida-scheduler .
+```
+
+## Development
+
+### Run the aida-controller
+
+First, make sure you have deployed or are running the aida-controller in the cluster by following the instructions in
+the [project repository](https://github.com/aida-dos/aida-controller).
+
+This controller is responsible for the management and reconciliation of the AIDA EdgeDeployments, which are the
+the resource type of our workloads.
+
+### Run the aida-scheduler
+
+To develop aida-scheduler in a Kubernetes cluster we use [ksync](https://github.com/ksync/ksync)
+to sync files between our local system, and the cluster.
+
+1. Install ksync. You can follow ksync installation steps [here](https://github.com/ksync/ksync#installation).
+
+2. Create a deployment where we will run the scheduler by applying the
+   [example/dev_scheduler_crd.yaml](example/dev_scheduler_crd.yaml).
+   ```shell
+    kubectl apply -f example/dev_scheduler_crd.yaml
+    ```
+
+3. If not done before then create a ksync configuration for the current folder.
+    ```shell
+    ksync create --selector=component=aida-scheduler --reload=false --local-read-only=true $(pwd) /code
+    ```
+
+4. Start ksync update system
+    ```shell
+    ksync watch
+    ```
+
+5. Run the scheduler in the cluster pod
+    ```shell
+    kubectl exec -it $(kubectl get pod -n kube-system | grep aida-scheduler | awk '{print $1}') -- sh
+    cd /code
+    go run main.go
+    ```
+
+### Manage nodes
+
+The aida-scheduler only manages Edge nodes, because the main purpose is to allow application workload to be deployed
+near the source of data to be processed. Therefore, the node controller filters nodes by 'node-role.kubernetes.io/edge'
+labels.
+
+- To add the label
+    ```shell
+    kubectl label node node0 --overwrite node-role.kubernetes.io/edge= 
+    ```
+
+- To remove the label
+    ```shell
+    kubectl label node node0 --overwrite node-role.kubernetes.io/edge-
+    ```
+
+### Deploy workloads
+
+Apply any of the workload [examples](examples)
+
+- No location set
+    ```shell
+    kubectl apply -f examples/workload_no_set_location.yaml
+    ```
+
+- Required location
+    ```shell
+    kubectl apply -f examples/workload_required_location.yaml
+    ```
+
+- Preferred location
+    ```shell
+    kubectl apply -f examples/workload_preferred_location.yaml
+    ```
+
+### Lint
+```shell
+go install github.com/golangci/golangci-lint/cmd/[email protected]
+golangci-lint ./...
+```
+
+### Testing and Coverage
+```shell
+go test --coverprofile=coverage.out ./...
+go tool cover -html=coverage.out 
+```
+
+### Format
+
+```shell
+go fmt ./...
+```

examples/dev_scheduler_crd.yaml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: aida-scheduler
+  namespace: kube-system
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: aida-scheduler-as-kube-scheduler
+subjects:
+  - kind: ServiceAccount
+    name: aida-scheduler
+    namespace: kube-system
+roleRef:
+  kind: ClusterRole
+  name: system:kube-scheduler
+  apiGroup: rbac.authorization.k8s.io
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: aida-scheduler-as-volume-scheduler
+subjects:
+  - kind: ServiceAccount
+    name: aida-scheduler
+    namespace: kube-system
+roleRef:
+  kind: ClusterRole
+  name: system:volume-scheduler
+  apiGroup: rbac.authorization.k8s.io
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app.kubernetes.io/name: aida-scheduler
+    app.kubernetes.io/version: 1.0.0
+  name: aida-scheduler
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: aida-scheduler
+      app.kubernetes.io/version: 1.0.0
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: aida-scheduler
+        app.kubernetes.io/version: 1.0.0
+    spec:
+      serviceAccountName: aida-scheduler
+      containers:
+        - name: aida-scheduler
+          image: golang:1.16-alpine
+          command: [ "/bin/sh", "-c", "--" ]
+          args: [ "while true; do sleep 30; done;" ]
+      affinity:
+        nodeAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            nodeSelectorTerms:
+              - matchExpressions:
+                  - key: node-role.kubernetes.io/master
+                    operator: Exists

examples/release_scheduler_crd.yaml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: aida-scheduler
+  namespace: kube-system
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: aida-scheduler-as-kube-scheduler
+subjects:
+  - kind: ServiceAccount
+    name: aida-scheduler
+    namespace: kube-system
+roleRef:
+  kind: ClusterRole
+  name: system:kube-scheduler
+  apiGroup: rbac.authorization.k8s.io
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: aida-scheduler-as-volume-scheduler
+subjects:
+  - kind: ServiceAccount
+    name: aida-scheduler
+    namespace: kube-system
+roleRef:
+  kind: ClusterRole
+  name: system:volume-scheduler
+  apiGroup: rbac.authorization.k8s.io
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app.kubernetes.io/name: aida-scheduler
+    app.kubernetes.io/version: latest
+  name: aida-scheduler
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: aida-scheduler
+      app.kubernetes.io/version: latest
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: aida-scheduler
+        app.kubernetes.io/version: latest
+    spec:
+      serviceAccountName: aida-scheduler
+      containers:
+        - name: aida-scheduler
+          image: ghcr.io/aida-dos/aida-scheduler/aida-scheduler:latest
+      affinity:
+        nodeAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            nodeSelectorTerms:
+              - matchExpressions:
+                  - key: node-role.kubernetes.io/master
+                    operator: Exists

examples/workload_no_set_location.yaml

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+apiVersion: edge.aida.io/v1
+kind: Deployment
+metadata:
+  name: no-set-location
+spec:
+  replicas: 1
+  template:
+    spec:
+      containers:
+        - name: test-app
+          image: nginx:latest

examples/workload_preferred_location.yaml

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+apiVersion: edge.aida.io/v1
+kind: Deployment
+metadata:
+  name: preferred-location
+spec:
+  replicas: 1
+  preferredLocation:
+    cities:
+      - Braga
+    countries:
+      - Portugal
+      - Germany
+  template:
+    spec:
+      containers:
+        - name: test-app
+          image: nginx:latest

examples/workload_required_location.yaml

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+apiVersion: edge.aida.io/v1
+kind: Deployment
+metadata:
+  name: required-location
+spec:
+  replicas: 1
+  requiredLocation:
+    cities:
+      - Braga
+      - New York
+    continents:
+      - Europe
+  template:
+    spec:
+      containers:
+        - name: test-app
+          image: nginx:latest

go.mod

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+module aida-scheduler
+
+go 1.16
+
+require (
+	github.com/aida-dos/gountries v0.0.0-20210328164130-bacd2f98d9be
+	github.com/stretchr/testify v1.4.0
+	k8s.io/api v0.18.10
+	k8s.io/apimachinery v0.18.11-rc.0
+	k8s.io/client-go v0.18.10
+	k8s.io/klog/v2 v2.8.0
+)