Merge pull request #71 from WyriHaximus/3.x-make-existing-kubeconfig-…

…overruleable

Make existing kubeconfig overruleable

.github/workflows/ci.yml

@@ -172,6 +172,114 @@ jobs:
           php -r "exit(trim('${COUNT}') === '0' ? 0 : 255);"
         env:
           COUNT: ${{ steps.helmlistcountthird.outputs.count }}
+  tests-helm-install-input-overruled:
+    name: "Testing Helm Install (input overruled) ${{ matrix.runner }}"
+    runs-on: ${{ matrix.runner }}
+    needs:
+      - runner-matrix
+    strategy:
+      matrix:
+        runner: ${{ fromJson(needs.runner-matrix.outputs.runner) }}
+    steps:
+      - uses: actions/checkout@v1
+      - name: Create k8s Kind Cluster
+        uses: helm/[email protected]
+      - name: Get running image ID
+        id: ps
+        run: printf "::set-output name=id::%s" $(docker ps --format "{{.ID}}")
+        env:
+          IMAGE: ${{ steps.build.outputs.tag }}
+      - name: Get running image IP
+        id: inspect
+        run: printf "::set-output name=ip::%s" $(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' ${IMAGE_ID})
+        env:
+          IMAGE_ID: ${{ steps.ps.outputs.id }}
+      - run: sed -i "s/127.0.0.1:32768/${KIND_IP}:6443/g" ~/.kube/config
+        env:
+          KIND_IP: ${{ steps.inspect.outputs.ip }}
+      - name: Make kubeconfig available to Helm3 action
+        run: |
+          kubeconfig=$(cat ~/.kube/config)
+          kubeconfig="${kubeconfig//'%'/'%25'}"
+          kubeconfig="${kubeconfig//$'\n'/'%0A'}"
+          kubeconfig="${kubeconfig//$'\r'/'%0D'}"
+          echo "::set-output name=kubeconfig::$kubeconfig"
+        id: kubeconfig
+      - name: List installed packages
+        uses: ./
+        id: helmlistcountfirst
+        with:
+          exec: |
+            printf "count=%s\n" $(helm list | grep ducker-hub-exporter | wc -l) >> $GITHUB_OUTPUT
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+      - run: |
+          php -r "exit(trim('${COUNT}') === '0' ? 0 : 255);"
+        env:
+          COUNT: ${{ steps.helmlistcountfirst.outputs.count }}
+      - name: Install ducker-hub-exporter
+        uses: ./
+        id: helm3
+        with:
+          exec: |
+            helm repo add WyriHaximusNet https://helm.wyrihaximus.net/
+            helm install ducker-hub-exporter WyriHaximusNet/docker-hub-exporter --atomic
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+      - name: List installed packages
+        uses: ./
+        with:
+          exec: |
+            helm list
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+      - run: |
+          rm ~/.kube -Rf
+          mkdir ~/.kube
+          echo "junk" > ~/.kube/config
+      - name: Get kubeconfig contents
+        uses: ./
+        id: getkubeconfigcontents
+        with:
+          exec: |
+            helm list
+            printf "::set-output name=cnt::%s" $(cat ~/.kube/config)
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+      - name: "Assert kubeconfig really contains: junk"
+        uses: nick-fields/assert-action@v1
+        with:
+          expected: junk
+          actual: ${{ steps.getkubeconfigcontents.outputs.cnt }}
+      - name: List installed packages through a overruled kubeconfig
+        uses: ./
+        id: helmlistcountoverruledkubeconfig
+        with:
+          exec: |
+            helm list
+            printf "::set-output name=count::%s" $(helm list | grep ducker-hub-exporter | wc -l)
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+          overrule_existing_kubeconfig: "true"
+      - run: |
+          php -r "exit(trim('${COUNT}') === '1' ? 0 : 255);"
+        env:
+          COUNT: ${{ steps.helmlistcountoverruledkubeconfig.outputs.count }}
+      - run: |
+          rm ~/.kube -Rf
+      - name: UnInstall ducker-hub-exporter
+        uses: ./
+        with:
+          exec: |
+            helm uninstall ducker-hub-exporter
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+      - name: List installed packages
+        uses: ./
+        id: helmlistcountthird
+        with:
+          exec: |
+            helm list
+            printf "::set-output name=count::%s" $(helm list | grep ducker-hub-exporter | wc -l)
+          kubeconfig: ${{ steps.kubeconfig.outputs.kubeconfig }}
+      - run: |
+          php -r "exit(trim('${COUNT}') === '0' ? 0 : 255);"
+        env:
+          COUNT: ${{ steps.helmlistcountthird.outputs.count }}
   tests-helm-install-file:
     name: "Testing Helm Install (file) ${{ matrix.runner }}"
     runs-on: ${{ matrix.runner }}

README.md

@@ -25,6 +25,13 @@ be appended to `~/.kube/config`, and will always be removed afterwards.*
 * *Required*: `no`
 * *Type*: `string`
 
+## overrule_existing_kubeconfig
+
+When this input is set to `"true"` it will swap out the `.kube/config` with the one provided.
+
+* *Required*: `no`
+* *Type*: `string`
+
 ## Output
 
 This action has only one output and that's the `number` output. This is the number you see in the HTML URL of the
@@ -50,6 +57,7 @@ jobs:
         with:
           exec: helm upgrade APP_NAME ./.helm/app/ --install --wait --atomic --namespace=APP_NAMESPACE --values=./.helm/app/values.yaml
           kubeconfig: '${{ secrets.KUBECONFIG }}'
+          overrule_existing_kubeconfig: "true"
 ```
 
 The following example shows how you can use this action to lint your helm files in (for example) `./.helm/app/`.

action.yml

@@ -10,6 +10,9 @@ inputs:
   kubeconfig:
     description: 'The full helm command to run (including helm)'
     required: false
+  overrule_existing_kubeconfig:
+    description: 'The full helm command to run (including helm)'
+    required: false
 runs:
   using: 'node16'
   main: 'main.js'

main.js

@@ -27,8 +27,20 @@ async function main() {
     });
 
     const kubeConfigLocation = homedir + '/.kube/config';
+    const kubeConfigLocationTempOld = kubeConfigLocation + '_tmp_f' + Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 13) + 'f';
     const kubeConfigExists = fs.existsSync(kubeConfigLocation);
-    if (kubeConfigExists) {
+    if (kubeConfigExists && process.env.INPUT_OVERRULE_EXISTING_KUBECONFIG === "true") {
+        console.log("\033[36mExisting kubeconfig found, but provided kubeconfig is overruling it\033[0m");
+        console.log("\033[36mWill be swapping out existing kubeconfig for the duration of the execution of this action\033[0m");
+        fs.renameSync(kubeConfigLocation, kubeConfigLocationTempOld);
+        fs.appendFileSync(
+            kubeConfigLocation,
+            "\r\n\r\n" + process.env.INPUT_KUBECONFIG + "\r\n\r\n",
+            {
+                mode: 0o644,
+            }
+        );
+    } else if (kubeConfigExists) {
         console.log("\033[36mExisting kubeconfig found, using that and ignoring input\033[0m");
     } else {
         console.log("\033[36mUsing kubeconfig from input\033[0m");
@@ -104,10 +116,19 @@ async function main() {
         fs.unlinkSync(execShFile.name);
         fs.unlinkSync(dockerKubeConfig);
         console.log("\033[36m  - exec ✅ \033[0m");
-        if (!kubeConfigExists) {
+        if (
+            !kubeConfigExists ||
+            (
+                kubeConfigExists && process.env.INPUT_OVERRULE_EXISTING_KUBECONFIG === "true"
+            )
+        ) {
             fs.unlinkSync(kubeConfigLocation);
             console.log("\033[36m  - kubeconfig ✅ \033[0m");
         }
+        if (kubeConfigExists && process.env.INPUT_OVERRULE_EXISTING_KUBECONFIG === "true") {
+            fs.renameSync(kubeConfigLocationTempOld, kubeConfigLocation);
+            console.log("\033[36m  - kubeconfig restored ✅ \033[0m");
+        }
     }
 }