Rename gotk binary to flux

Signed-off-by: Hidde Beydals <hello@hidde.co>

cmd/flux/main.go

@@ -0,0 +1,156 @@
+/*
+Copyright 2020 The Flux authors
+
+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 (
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/cobra/doc"
+	_ "k8s.io/client-go/plugin/pkg/client/auth"
+
+	fluxlog "github.com/fluxcd/toolkit/pkg/log"
+	"github.com/fluxcd/toolkit/pkg/manifestgen/install"
+)
+
+var VERSION = "0.0.0-dev.0"
+
+var rootCmd = &cobra.Command{
+	Use:           "flux",
+	Version:       VERSION,
+	SilenceUsage:  true,
+	SilenceErrors: true,
+	Short:         "Command line utility for assembling Kubernetes CD pipelines",
+	Long:          `Command line utility for assembling Kubernetes CD pipelines the GitOps way.`,
+	Example: `  # Check prerequisites
+  flux check --pre
+
+  # Install the latest version of the toolkit
+  flux install --version=master
+
+  # Create a source from a public Git repository
+  flux create source git webapp-latest \
+    --url=https://github.com/stefanprodan/podinfo \
+    --branch=master \
+    --interval=3m
+
+  # List GitRepository sources and their status
+  flux get sources git
+
+  # Trigger a GitRepository source reconciliation
+  flux reconcile source git flux-system
+
+  # Export GitRepository sources in YAML format
+  flux export source git --all > sources.yaml
+
+  # Create a Kustomization for deploying a series of microservices
+  flux create kustomization webapp-dev \
+    --source=webapp-latest \
+    --path="./deploy/webapp/" \
+    --prune=true \
+    --interval=5m \
+    --validation=client \
+    --health-check="Deployment/backend.webapp" \
+    --health-check="Deployment/frontend.webapp" \
+    --health-check-timeout=2m
+
+  # Trigger a git sync of the Kustomization's source and apply changes
+  flux reconcile kustomization webapp-dev --with-source
+
+  # Suspend a Kustomization reconciliation
+  flux suspend kustomization webapp-dev
+
+  # Export Kustomizations in YAML format
+  flux export kustomization --all > kustomizations.yaml
+
+  # Resume a Kustomization reconciliation
+  flux resume kustomization webapp-dev
+
+  # Delete a Kustomization
+  flux delete kustomization webapp-dev
+
+  # Delete a GitRepository source
+  flux delete source git webapp-latest
+
+  # Uninstall the toolkit and delete CRDs
+  flux uninstall --crds
+`,
+}
+
+var (
+	kubeconfig   string
+	namespace    string
+	timeout      time.Duration
+	verbose      bool
+	pollInterval                = 2 * time.Second
+	logger       fluxlog.Logger = printLogger{}
+	defaults                    = install.MakeDefaultOptions()
+)
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&namespace, "namespace", "n", defaults.Namespace, "the namespace scope for this operation")
+	rootCmd.PersistentFlags().DurationVar(&timeout, "timeout", 5*time.Minute, "timeout for this operation")
+	rootCmd.PersistentFlags().BoolVar(&verbose, "verbose", false, "print generated objects")
+}
+
+func main() {
+	log.SetFlags(0)
+	generateDocs()
+	kubeconfigFlag()
+	if err := rootCmd.Execute(); err != nil {
+		logger.Failuref("%v", err)
+		os.Exit(1)
+	}
+}
+
+func kubeconfigFlag() {
+	if home := homeDir(); home != "" {
+		rootCmd.PersistentFlags().StringVarP(&kubeconfig, "kubeconfig", "", filepath.Join(home, ".kube", "config"),
+			"path to the kubeconfig file")
+	} else {
+		rootCmd.PersistentFlags().StringVarP(&kubeconfig, "kubeconfig", "", "",
+			"absolute path to the kubeconfig file")
+	}
+
+	if len(os.Getenv("KUBECONFIG")) > 0 {
+		kubeconfig = os.Getenv("KUBECONFIG")
+	}
+}
+
+func generateDocs() {
+	args := os.Args[1:]
+	if len(args) > 0 && args[0] == "docgen" {
+		rootCmd.PersistentFlags().StringVarP(&kubeconfig, "kubeconfig", "", "~/.kube/config",
+			"path to the kubeconfig file")
+		rootCmd.DisableAutoGenTag = true
+		err := doc.GenMarkdownTree(rootCmd, "./docs/cmd")
+		if err != nil {
+			log.Fatal(err)
+		}
+		os.Exit(0)
+	}
+}
+
+func homeDir() string {
+	if h := os.Getenv("HOME"); h != "" {
+		return h
+	}
+	return os.Getenv("USERPROFILE") // windows
+}