refactoring act-runner-network-stack, added action kubectl-setup

actions/kubectl-setup/action.yaml

@@ -0,0 +1,75 @@
+name: Setup kubectl
+description: "Reads kube config from inputs and sets kube config"
+
+inputs:
+  kube_server:
+    description: "Kubernetes server address and port. Example (https://serverip:6443)"
+    required: true
+  kube_ca_base64:
+    description: "Base64-encoded Kubernetes cluster CA certificate"
+    required: true
+  kube_token:
+    description: "Kubernetes ServiceAccount token"
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Create kubeconfig
+      shell: bash
+      run: |
+        set -euo pipefail
+
+        # check arguments
+        ERROR=0
+
+        if [ -z "${{ inputs.kube_server }}" ]; then
+          echo "❌ ERROR: kube_server input is empty or not set"
+          $ERROR=1
+        fi
+
+        if [ -z "${{ inputs.kube_ca_base64 }}" ]; then
+          echo "❌ ERROR: kube_ca_base64 input is empty or not set"
+           $ERROR=1
+        fi
+
+        if [ -z "${{ inputs.kube_server }}" ]; then
+          echo "❌ ERROR: kube_token input is empty or not set"
+          $ERROR=1
+        fi
+        
+        if [ "$ERROR" != 0 ]; then
+          echo "❌ ERROR code $ERROR"
+          exit "$ERROR"
+        fi
+        # end check arguments
+
+        # creates kube config
+        mkdir -p "${GITHUB_TEMP}/.kube"
+        cat <<EOF > "${GITHUB_TEMP}/.kube/config"
+        apiVersion: v1
+        kind: Config
+        clusters:
+        - cluster:
+            certificate-authority-data: ${{ inputs.kube_ca_base64 }}
+            server: ${{ inputs.kube_server }}
+          name: cluster
+        contexts:
+        - context:
+            cluster: cluster
+            namespace: default
+            user: user
+          name: context
+        current-context: context
+        users:
+        - name: user
+          user:
+            token: ${{ inputs.kube_token }}
+        EOF
+
+        # sets KUBECONFIG environment variable
+        echo "KUBECONFIG=${GITHUB_TEMP}/.kube/config" >> "${GITHUB_ENV}"
+
+        # tests communication to server (add v argument if debug is required)
+        curl -kv -cacert <(echo "${{ inputs.kube_ca_base64 }}" | base64 -d) -H "Authorization: Bearer ${{ inputs.kube_token }}" ${{ inputs.kube_server }}/version
+