Final fixes to work with new Components version

Author: pmuens

Diff for: .gitignore

@@ -20,3 +20,4 @@ build/
 env.js
 package-lock.json
 test
+tmp/

Diff for: README.md

@@ -25,7 +25,21 @@ Just create a `serverless.yml` file
 $ touch serverless.yml
 ```
 
-Make sure that you have generated your [`Kubeconfig` file](https://rancher.com/docs/rancher/v2.x/en/cluster-admin/kubeconfig/) via `kubectl`.
+Then create a `.env` file
+
+```console
+$ touch .env
+```
+
+Update the `.env` file with information about your Kubernetes setup
+
+```
+# .env
+KUBERNETES_ENDPOINT=https://cluster.example.com
+KUBERNETES_PORT=6443
+KUBERNETES_SERVICE_ACCOUNT_TOKEN=xxxx
+KUBERNETES_SKIP_TLS_VERIFY=false
+```
 
 ### 3. Configure
 
@@ -38,7 +52,6 @@ name: todo-kubernetes-namespace
 component: kubernetes-namespace@dev
 
 inputs:
-  kubeConfigPath: ../kubeconfig # default is `~/.kube/config`
   name: 'default' # default is `'default'`
   labels: # default is `null`
     foo: bar

Diff for: package.json

@@ -11,11 +11,6 @@
   },
   "author": "Serverless, Inc.",
   "license": "Apache",
-  "dependencies": {
-    "@kubernetes/client-node": "^0.11.1",
-    "@serverless/core": "^1.1.2",
-    "ramda": "^0.26.1"
-  },
   "devDependencies": {
     "babel-eslint": "^9.0.0",
     "eslint": "^5.6.0",

Diff for: src/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "@serverless/kubernetes-namespace",
+  "version": "0.2.0",
+  "main": "./serverless.js",
+  "publishConfig": {
+    "access": "public"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Serverless, Inc.",
+  "license": "Apache",
+  "dependencies": {
+    "@kubernetes/client-node": "^0.11.1"
+  }
+}

Diff for: src/serverless.js

@@ -1,19 +1,19 @@
-const path = require('path')
-const { isEmpty, mergeDeepRight } = require('ramda')
 const kubernetes = require('@kubernetes/client-node')
 const { Component } = require('@serverless/core')
 
 const defaults = {
-  kubeConfigPath: path.join(process.env.HOME, '.kube', 'config'),
   name: 'default',
   labels: null
 }
 
 class KubernetesNamespace extends Component {
   async deploy(inputs = {}) {
-    const config = mergeDeepRight(defaults, inputs)
+    const config = {
+      ...defaults,
+      ...inputs
+    }
 
-    const k8sCore = this.getKubernetesClient(config.kubeConfigPath, kubernetes.CoreV1Api)
+    const k8sCore = this.getKubernetesClient(kubernetes.CoreV1Api)
 
     let namespaceExists = true
     try {
@@ -31,12 +31,13 @@ class KubernetesNamespace extends Component {
   }
 
   async remove(inputs = {}) {
-    let config = mergeDeepRight(defaults, inputs)
-    if (isEmpty(config)) {
-      config = this.state
+    const config = {
+      ...defaults,
+      ...inputs,
+      ...this.state
     }
 
-    const k8sCore = this.getKubernetesClient(config.kubeConfigPath, kubernetes.CoreV1Api)
+    const k8sCore = this.getKubernetesClient(kubernetes.CoreV1Api)
 
     await this.deleteNamespace(k8sCore, config)
 
@@ -45,11 +46,30 @@ class KubernetesNamespace extends Component {
   }
 
   // "private" methods
-  getKubernetesClient(configPath, type) {
-    let kc = new kubernetes.KubeConfig()
-    kc.loadFromFile(configPath)
-    kc = kc.makeApiClient(type)
-    return kc
+  getKubernetesClient(type) {
+    const { endpoint, port } = this.credentials.kubernetes
+    const token = this.credentials.kubernetes.serviceAccountToken
+    const skipTLSVerify = this.credentials.kubernetes.skipTlsVerify ? true : false
+    const kc = new kubernetes.KubeConfig()
+    kc.loadFromOptions({
+      clusters: [
+        {
+          name: 'cluster',
+          skipTLSVerify,
+          server: `${endpoint}:${port}`
+        }
+      ],
+      users: [{ name: 'user', token }],
+      contexts: [
+        {
+          name: 'context',
+          user: 'user',
+          cluster: 'cluster'
+        }
+      ],
+      currentContext: 'context'
+    })
+    return kc.makeApiClient(type)
   }
 
   async createNamespace(k8s, { name, labels }) {