Adding cmd directory and edit .gitignore

**Why:**

* My .gitignore was too open in it's selector

**This change addresses the need by:**

* close #28

Signed-off-by: Christopher Hein <me@christopherhein.com>

.gitignore

@@ -1,4 +1,4 @@
-aws-operator
+/aws-operator
 pod-role.json
 .DS_Store
 aws-operator.yml

cmd/aws-operator/main.go

@@ -0,0 +1,100 @@
+package main
+
+import (
+	"fmt"
+	homedir "github.com/mitchellh/go-homedir"
+
+	"github.com/christopherhein/aws-operator/pkg/config"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"os"
+	"strings"
+)
+
+var (
+	// cfgFile, kubeConfig, awsRegion all help support passed in flags into the server
+	cfgFile, kubeconfig, awsRegion, logLevel, logFile, resources, clusterName, bucket string
+
+	// rootCmd represents the base command when called without any subcommands
+	rootCmd = &cobra.Command{
+		Use:   "aws-operator",
+		Short: "AWS Operator manages your AWS Infrastructure using CRDs and Operators",
+		Long:  `TODO WRITE THIS`,
+		Run: func(c *cobra.Command, _ []string) {
+			c.Help()
+		},
+	}
+)
+
+func main() {
+	cobra.OnInitialize(initConfig)
+
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "f", "Config file (default is $HOME/.aws-operator.yaml)")
+	rootCmd.PersistentFlags().StringVarP(&kubeconfig, "kubeconfig", "k", "", "Path to local kubeconfig file (mainly used for development)")
+	rootCmd.PersistentFlags().StringVarP(&awsRegion, "region", "r", "us-west-2", "AWS Region for resources to be created in")
+	rootCmd.PersistentFlags().StringVarP(&logLevel, "loglevel", "l", "Info", "Log level for the CLI")
+	rootCmd.PersistentFlags().StringVarP(&logFile, "logfile", "", "", "Log level for the CLI")
+	rootCmd.PersistentFlags().StringVarP(&resources, "resources", "", "s3bucket,dynamodb", "Comma delimited list of CRDs to deploy")
+	rootCmd.PersistentFlags().StringVarP(&clusterName, "cluster-name", "i", "aws-operator", "Cluster name for the Application to run as, used to label the Cloudformation templated to avoid conflict")
+	rootCmd.PersistentFlags().StringVarP(&bucket, "bucket", "b", "aws-operator", "To configure the operator you need a base bucket to contain the resources")
+
+	viper.BindPFlag("config", rootCmd.PersistentFlags().Lookup("config"))
+	viper.BindPFlag("kubeconfig", rootCmd.PersistentFlags().Lookup("kubeconfig"))
+	viper.BindPFlag("region", rootCmd.PersistentFlags().Lookup("region"))
+	viper.BindPFlag("loglevel", rootCmd.PersistentFlags().Lookup("loglevel"))
+	viper.BindPFlag("logfile", rootCmd.PersistentFlags().Lookup("logfile"))
+	viper.BindPFlag("resources", rootCmd.PersistentFlags().Lookup("resources"))
+	viper.BindPFlag("clustername", rootCmd.PersistentFlags().Lookup("cluster-name"))
+	viper.BindPFlag("bucket", rootCmd.PersistentFlags().Lookup("bucket"))
+}
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if cfgFile != "" {
+		viper.SetConfigFile(cfgFile)
+	} else {
+		home, err := homedir.Dir()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		viper.AddConfigPath(home)
+		viper.SetConfigName(".aws-operator")
+	}
+
+	replacer := strings.NewReplacer(".", "_")
+	viper.SetEnvKeyReplacer(replacer)
+	viper.AutomaticEnv()
+
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Println("Using config file:", viper.ConfigFileUsed())
+	}
+}
+
+func getConfig() (*config.Config, error) {
+	resourcesList := strings.Split(resources, ",")
+	config := &config.Config{
+		Region:     awsRegion,
+		Kubeconfig: kubeconfig,
+		LoggingConfig: &config.LoggingConfig{
+			File:              logFile,
+			Level:             logLevel,
+			FullTimestamps:    true,
+			DisableTimestamps: false,
+		},
+		Resources:   resourcesList,
+		ClusterName: clusterName,
+		Bucket:      bucket,
+	}
+
+	return config, nil
+}

cmd/aws-operator/server.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"github.com/christopherhein/aws-operator/pkg/logger"
+	"github.com/christopherhein/aws-operator/pkg/server"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+var serverCmd = &cobra.Command{
+	Use:   "server",
+	Short: "Run the operator",
+	Long:  ``,
+	Run: func(cmd *cobra.Command, args []string) {
+		config, err := getConfig()
+		if err != nil {
+			logrus.Fatalf("%s", err)
+		}
+
+		logger, err := logger.Configure(config.LoggingConfig)
+		if err != nil {
+			logrus.Fatalf("Failed to configure logging: '%s'" + err.Error())
+		}
+		config.Logger = logger
+
+		signalChan := make(chan os.Signal, 1)
+		stopChan := make(chan struct{})
+		signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
+
+		server.New(config).Run(stopChan)
+
+		for {
+			select {
+			case <-signalChan:
+				logger.Info("shutdown signal received, exiting...")
+				close(stopChan)
+				return
+			}
+		}
+
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(serverCmd)
+}

cmd/aws-operator/version.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	goVersion "github.com/christopherhein/go-version"
+	"github.com/spf13/cobra"
+)
+
+var (
+	shortened  = false
+	version    = "dev"
+	commit     = "none"
+	date       = "unknown"
+	versionCmd = &cobra.Command{
+		Use:   "version",
+		Short: "Version will output the current aws-operator build information",
+		Long:  ``,
+		Run: func(_ *cobra.Command, _ []string) {
+			var response string
+			versionOutput := goVersion.New(version, commit, date)
+
+			if shortened {
+				response = versionOutput.ToShortened()
+			} else {
+				response = versionOutput.ToJSON()
+			}
+			fmt.Printf("%+v", response)
+			return
+		},
+	}
+)
+
+func init() {
+	versionCmd.Flags().BoolVarP(&shortened, "short", "s", false, "Use shortened output for version information.")
+	rootCmd.AddCommand(versionCmd)
+}