feat: filter server by recipe

Closes coop-cloud/organising#363

cli/app/list.go

@@ -23,12 +23,12 @@ var statusFlag = &cli.BoolFlag{
 	Destination: &status,
 }
 
-var appRecipe string
+var recipeFilter string
 var recipeFlag = &cli.StringFlag{
 	Name:        "recipe, r",
 	Value:       "",
 	Usage:       "Show apps of a specific recipe",
-	Destination: &appRecipe,
+	Destination: &recipeFilter,
 }
 
 var listAppServer string
@@ -84,7 +84,7 @@ can take some time.
 			logrus.Fatal(err)
 		}
 
-		apps, err := config.GetApps(appFiles)
+		apps, err := config.GetApps(appFiles, recipeFilter)
 		if err != nil {
 			logrus.Fatal(err)
 		}
@@ -104,7 +104,7 @@ can take some time.
 				}
 			}
 
-			statuses, err = config.GetAppStatuses(appFiles, internal.MachineReadable)
+			statuses, err = config.GetAppStatuses(apps, internal.MachineReadable)
 			if err != nil {
 				logrus.Fatal(err)
 			}
@@ -124,14 +124,14 @@ can take some time.
 			var ok bool
 			if stats, ok = allStats[app.Server]; !ok {
 				stats = serverStatus{}
-				if appRecipe == "" {
+				if recipeFilter == "" {
 					// count server, no filtering
 					totalServersCount++
 				}
 			}
 
-			if app.Recipe == appRecipe || appRecipe == "" {
-				if appRecipe != "" {
+			if app.Recipe == recipeFilter || recipeFilter == "" {
+				if recipeFilter != "" {
 					// only count server if matches filter
 					totalServersCount++
 				}

pkg/config/app.go

@@ -185,7 +185,7 @@ func newApp(env AppEnv, name string, appFile AppFile) (App, error) {
 	}, nil
 }
 
-// LoadAppFiles gets all app files for a given set of servers or all servers
+// LoadAppFiles gets all app files for a given set of servers or all servers.
 func LoadAppFiles(servers ...string) (AppFiles, error) {
 	appFiles := make(AppFiles)
 	if len(servers) == 1 {
@@ -194,7 +194,7 @@ func LoadAppFiles(servers ...string) (AppFiles, error) {
 			var err error
 			servers, err = GetAllFoldersInDirectory(SERVERS_DIR)
 			if err != nil {
-				return nil, err
+				return appFiles, err
 			}
 		}
 	}
@@ -205,8 +205,9 @@ func LoadAppFiles(servers ...string) (AppFiles, error) {
 		serverDir := path.Join(SERVERS_DIR, server)
 		files, err := getAllFilesInDirectory(serverDir)
 		if err != nil {
-			return nil, fmt.Errorf("server %s doesn't exist? Run \"abra server ls\" to check", server)
+			return appFiles, fmt.Errorf("server %s doesn't exist? Run \"abra server ls\" to check", server)
 		}
+
 		for _, file := range files {
 			appName := strings.TrimSuffix(file.Name(), ".env")
 			appFilePath := path.Join(SERVERS_DIR, server, file.Name())
@@ -216,12 +217,13 @@ func LoadAppFiles(servers ...string) (AppFiles, error) {
 			}
 		}
 	}
+
 	return appFiles, nil
 }
 
-// GetApp loads an apps settings, reading it from file, in preparation to use it
-//
-// ONLY use when ready to use the env file to keep IO down
+// GetApp loads an apps settings, reading it from file, in preparation to use
+// it. It should only be used when ready to use the env file to keep IO
+// operations down.
 func GetApp(apps AppFiles, name AppName) (App, error) {
 	appFile, exists := apps[name]
 	if !exists {
@@ -236,8 +238,9 @@ func GetApp(apps AppFiles, name AppName) (App, error) {
 	return app, nil
 }
 
-// GetApps returns a slice of Apps with their env files read from a given slice of AppFiles
-func GetApps(appFiles AppFiles) ([]App, error) {
+// GetApps returns a slice of Apps with their env files read from a given
+// slice of AppFiles.
+func GetApps(appFiles AppFiles, recipeFilter string) ([]App, error) {
 	var apps []App
 
 	for name := range appFiles {
@@ -245,7 +248,14 @@ func GetApps(appFiles AppFiles) ([]App, error) {
 		if err != nil {
 			return nil, err
 		}
-		apps = append(apps, app)
+
+		if recipeFilter != "" {
+			if app.Recipe == recipeFilter {
+				apps = append(apps, app)
+			}
+		} else {
+			apps = append(apps, app)
+		}
 	}
 
 	return apps, nil
@@ -292,7 +302,7 @@ func GetAppNames() ([]string, error) {
 		return appNames, err
 	}
 
-	apps, err := GetApps(appFiles)
+	apps, err := GetApps(appFiles, "")
 	if err != nil {
 		return appNames, err
 	}
@@ -304,7 +314,8 @@ func GetAppNames() ([]string, error) {
 	return appNames, nil
 }
 
-// TemplateAppEnvSample copies the example env file for the app into the users env files
+// TemplateAppEnvSample copies the example env file for the app into the users
+// env files.
 func TemplateAppEnvSample(recipeName, appName, server, domain string) error {
 	envSamplePath := path.Join(RECIPES_DIR, recipeName, ".env.sample")
 	envSample, err := ioutil.ReadFile(envSamplePath)
@@ -339,21 +350,20 @@ func TemplateAppEnvSample(recipeName, appName, server, domain string) error {
 	return nil
 }
 
-// SanitiseAppName makes a app name usable with Docker by replacing illegal characters
+// SanitiseAppName makes a app name usable with Docker by replacing illegal
+// characters.
 func SanitiseAppName(name string) string {
 	return strings.ReplaceAll(name, ".", "_")
 }
 
-// GetAppStatuses queries servers to check the deployment status of given apps
-func GetAppStatuses(appFiles AppFiles, MachineReadable bool) (map[string]map[string]string, error) {
+// GetAppStatuses queries servers to check the deployment status of given apps.
+func GetAppStatuses(apps []App, MachineReadable bool) (map[string]map[string]string, error) {
 	statuses := make(map[string]map[string]string)
 
-	var unique []string
 	servers := make(map[string]struct{})
-	for _, appFile := range appFiles {
-		if _, ok := servers[appFile.Server]; !ok {
-			servers[appFile.Server] = struct{}{}
-			unique = append(unique, appFile.Server)
+	for _, app := range apps {
+		if _, ok := servers[app.Server]; !ok {
+			servers[app.Server] = struct{}{}
 		}
 	}
 
@@ -362,6 +372,7 @@ func GetAppStatuses(appFiles AppFiles, MachineReadable bool) (map[string]map[str
 	if !MachineReadable {
 		bar = formatter.CreateProgressbar(len(servers), "querying remote servers...")
 	}
+
 	ch := make(chan stack.StackStatus, len(servers))
 	for server := range servers {
 		go func(s string) {