cli: adds ci subcommand and ci travis

fixes #129

popper/check.go

@@ -81,12 +81,6 @@ var checkCmd = &cobra.Command{
 	},
 }
 
-func checkWeInExperimentFolder() {
-	if !sh.Test("dir", "../../experiments") {
-		log.Fatalln("Not inside an experiment folder, 'cd' into one first.")
-	}
-}
-
 func init() {
 	RootCmd.AddCommand(checkCmd)
 

popper/ci.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"io/ioutil"
+	"log"
+	"github.com/spf13/cobra"
+)
+
+var travisYaml = `---
+language: python
+
+python:
+- '2.7'
+
+services:
+- docker
+
+install:
+- curl -O https://raw.githubusercontent.com/systemslab/popperci/master/implementations/python/docker/entrypoint.py
+- chmod 755 entrypoint.py
+
+script: ./entrypoint.py
+`
+
+var ciCmd = &cobra.Command{
+	Use:   "ci",
+	Short: "Generate config files for a CI system.",
+	Long:  "",
+	Run: func(cmd *cobra.Command, args []string) {
+		log.Fatalln("Can't use this subcommand directly. See 'popper help ci' for usage")
+	},
+}
+var ciTravisCmd = &cobra.Command{
+	Use:   "travis",
+	Short: "Generate config file for TravisCI.",
+	Long:  "",
+	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) != 0 {
+			log.Fatalln("This command does not take arguments.")
+		}
+		ensureRootFolder()
+		err := ioutil.WriteFile("./.travis.yml", []byte(travisYaml), 0755)
+		if err != nil {
+			log.Fatalln("Error writing .travis.yml")
+		}
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(ciCmd)
+	ciCmd.AddCommand(ciTravisCmd)
+}

popper/main.go

@@ -60,6 +60,18 @@ func getTemplates() (org_repo_branch string, err error) {
 	return popperRepoUrl, nil
 }
 
+func ensureExperimentFolder() {
+	if !sh.Test("dir", "../../experiments") {
+		log.Fatalln("Not inside an experiment folder, 'cd' into one first.")
+	}
+}
+
+func ensureRootFolder() {
+	if !sh.Test("dir", "experiments") {
+		log.Fatalln("Can't find experiments/ folder in current directory, 'cd' into project root folder first.")
+	}
+}
+
 func init() {
 	RootCmd.Flags().BoolVarP(
 		&showVersion, "version", "v", false,

popper/version.go

@@ -6,7 +6,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var versionId = "0.4-dev"
+var versionId = "0.4"
 
 var versionCmd = &cobra.Command{
 	Use:   "version",

popper/ws.go

@@ -35,7 +35,7 @@ var wsLogCmd = &cobra.Command{
 		if len(args) > 0 {
 			log.Fatalln("This command doesn't take arguments.")
 		}
-		checkWeInExperimentFolder()
+		ensureExperimentFolder()
 		expFolder := getWsExperimentFolderPath()
 		commitFolders, _ := ioutil.ReadDir(expFolder)
 		for _, f := range commitFolders {
@@ -103,7 +103,7 @@ var wsCommitCmd = &cobra.Command{
 		if len(args) > 0 {
 			log.Fatalln("This command doesn't take arguments.")
 		}
-		checkWeInExperimentFolder()
+		ensureExperimentFolder()
 		if _, err := sh.Command("rsync", "--version").CombinedOutput(); err != nil {
 			log.Fatalln("Can't invoke rsync.")
 		}