Split code across packages

Makefile

@@ -10,17 +10,18 @@ GOFMT ?=	gofmt -w
 
 NAME = scw
 SRC = .
+PACKAGES = api commands utils
 REV = $(shell git rev-parse HEAD || echo "nogit")
 TAG = $(shell git describe --tags --always || echo "nogit")
 BUILDER = scaleway-cli-builder
 
 
 BUILD_LIST = $(foreach int, $(SRC), $(int)_build)
-CLEAN_LIST = $(foreach int, $(SRC), $(int)_clean)
+CLEAN_LIST = $(foreach int, $(SRC) $(PACKAGES), $(int)_clean)
 INSTALL_LIST = $(foreach int, $(SRC), $(int)_install)
-IREF_LIST = $(foreach int, $(SRC), $(int)_iref)
-TEST_LIST = $(foreach int, $(SRC), $(int)_test)
-FMT_LIST = $(foreach int, $(SRC), $(int)_fmt)
+IREF_LIST = $(foreach int, $(SRC) $(PACKAGES), $(int)_iref)
+TEST_LIST = $(foreach int, $(SRC) $(PACKAGES), $(int)_test)
+FMT_LIST = $(foreach int, $(SRC) $(PACKAGES), $(int)_fmt)
 
 
 .PHONY: $(CLEAN_LIST) $(TEST_LIST) $(FMT_LIST) $(INSTALL_LIST) $(BUILD_LIST) $(IREF_LIST)
@@ -84,3 +85,8 @@ travis_install:
 
 travis_run: build
 	go test -v -covermode=count -coverprofile=profile.cov
+
+
+golint:
+	@go get github.com/golang/lint/golint
+	@for dir in */; do golint $$dir; done

README.md

@@ -967,7 +967,7 @@ Development in progress
 
 #### Fixes
 
-* The project is now `go get`-able
+* The project is now `go get`-able and splitted into packages
 * Added timeout when polling SSH TCP port for `scw start -w` and `scw exec -w` ([#46](https://github.com/scaleway/scaleway-cli/issues/46))
 * Improved resolver behavior for exact matching  ([#53](https://github.com/scaleway/scaleway-cli/issues/53), [#55](https://github.com/scaleway/scaleway-cli/issues/55))
 * Verbose error message when `scw exec` fails ([#42](https://github.com/scaleway/scaleway-cli/issues/42))

api/README.md

@@ -0,0 +1,6 @@
+# Scaleway's API
+
+This package contains facilities to play with the Scaleway API, in includes the following features:
+
+- dedicated configuration file containing credentials to deal with the API
+- caching to resolve UUIDs without contacting the API

api.go → api/api.go

@@ -1,4 +1,4 @@
-package main
+package api
 
 import (
 	"bytes"
@@ -452,7 +452,8 @@ type ScalewayImageDefinition struct {
 	Arch               string `json:"arch"`
 }
 
-var funcMap = template.FuncMap{
+// FuncMap used for json inspection
+var FuncMap = template.FuncMap{
 	"json": func(v interface{}) string {
 		a, _ := json.Marshal(v)
 		return string(a)

cache.go → api/cache.go

@@ -1,4 +1,4 @@
-package main
+package api
 
 import (
 	"encoding/json"
@@ -9,6 +9,8 @@ import (
 	"strings"
 	"sync"
 
+	"github.com/scaleway/scaleway-cli/utils"
+
 	"code.google.com/p/go-uuid/uuid"
 )
 
@@ -160,7 +162,7 @@ func (c *ScalewayCache) LookUpImages(needle string, acceptUUID bool) []string {
 		return exactMatches
 	}
 
-	return RemoveDuplicates(res)
+	return utils.RemoveDuplicates(res)
 }
 
 // LookUpSnapshots attempts to return identifiers matching a pattern
@@ -190,7 +192,7 @@ func (c *ScalewayCache) LookUpSnapshots(needle string, acceptUUID bool) []string
 		return exactMatches
 	}
 
-	return RemoveDuplicates(res)
+	return utils.RemoveDuplicates(res)
 }
 
 // LookUpVolumes attempts to return identifiers matching a pattern
@@ -219,7 +221,7 @@ func (c *ScalewayCache) LookUpVolumes(needle string, acceptUUID bool) []string {
 		return exactMatches
 	}
 
-	return RemoveDuplicates(res)
+	return utils.RemoveDuplicates(res)
 }
 
 // LookUpBootscripts attempts to return identifiers matching a pattern
@@ -248,7 +250,7 @@ func (c *ScalewayCache) LookUpBootscripts(needle string, acceptUUID bool) []stri
 		return exactMatches
 	}
 
-	return RemoveDuplicates(res)
+	return utils.RemoveDuplicates(res)
 }
 
 // LookUpServers attempts to return identifiers matching a pattern
@@ -277,7 +279,7 @@ func (c *ScalewayCache) LookUpServers(needle string, acceptUUID bool) []string {
 		return exactMatches
 	}
 
-	return RemoveDuplicates(res)
+	return utils.RemoveDuplicates(res)
 }
 
 // LookUpIdentifiers attempts to return identifiers matching a pattern
@@ -322,23 +324,6 @@ func (c *ScalewayCache) LookUpIdentifiers(needle string) []ScalewayIdentifier {
 	return results
 }
 
-// RemoveDuplicates transforms an array into a unique array
-func RemoveDuplicates(elements []string) []string {
-	encountered := map[string]bool{}
-
-	// Create a map of all unique elements.
-	for v := range elements {
-		encountered[elements[v]] = true
-	}
-
-	// Place all keys from the map into a slice.
-	result := []string{}
-	for key := range encountered {
-		result = append(result, key)
-	}
-	return result
-}
-
 // InsertServer registers a server in the cache
 func (c *ScalewayCache) InsertServer(identifier, name string) {
 	c.Lock.Lock()

api_helpers.go → api/helpers.go

@@ -1,4 +1,4 @@
-package main
+package api
 
 import (
 	"fmt"
@@ -10,8 +10,29 @@ import (
 	log "github.com/Sirupsen/logrus"
 	"github.com/docker/docker/pkg/namesgenerator"
 	"github.com/dustin/go-humanize"
+	"github.com/scaleway/scaleway-cli/utils"
 )
 
+// ScalewayResolvedIdentifier represents a list of matching identifier for a specifier pattern
+type ScalewayResolvedIdentifier struct {
+	// Identifiers holds matching identifiers
+	Identifiers []ScalewayIdentifier
+
+	// Needle is the criteria used to lookup identifiers
+	Needle string
+}
+
+// ScalewayImageInterface is an interface to multiple Scaleway items
+type ScalewayImageInterface struct {
+	CreationDate time.Time
+	Identifier   string
+	Name         string
+	Tag          string
+	VirtualSize  float64
+	Public       bool
+	Type         string
+}
+
 // CreateVolumeFromHumanSize creates a volume on the API with a human readable size
 func CreateVolumeFromHumanSize(api *ScalewayAPI, size string) (*string, error) {
 	bytes, err := humanize.ParseBytes(size)
@@ -32,15 +53,6 @@ func CreateVolumeFromHumanSize(api *ScalewayAPI, size string) (*string, error) {
 	return &volumeID, nil
 }
 
-// ScalewayResolvedIdentifier represents a list of matching identifier for a specifier pattern
-type ScalewayResolvedIdentifier struct {
-	// Identifiers holds matching identifiers
-	Identifiers []ScalewayIdentifier
-
-	// Needle is the criteria used to lookup identifiers
-	Needle string
-}
-
 // fillIdentifierCache fills the cache by fetching fro the API
 func fillIdentifierCache(api *ScalewayAPI) {
 	log.Debugf("Filling the cache")
@@ -69,9 +81,9 @@ func fillIdentifierCache(api *ScalewayAPI) {
 	wg.Wait()
 }
 
-// getIdentifier returns a an identifier if the resolved needles only match one element, else, it exists the program
-func getIdentifier(api *ScalewayAPI, needle string) *ScalewayIdentifier {
-	idents := resolveIdentifier(api, needle)
+// GetIdentifier returns a an identifier if the resolved needles only match one element, else, it exists the program
+func GetIdentifier(api *ScalewayAPI, needle string) *ScalewayIdentifier {
+	idents := ResolveIdentifier(api, needle)
 
 	if len(idents) == 1 {
 		return &idents[0]
@@ -88,8 +100,8 @@ func getIdentifier(api *ScalewayAPI, needle string) *ScalewayIdentifier {
 	return nil
 }
 
-// resolveIdentifier resolves needle provided by the user
-func resolveIdentifier(api *ScalewayAPI, needle string) []ScalewayIdentifier {
+// ResolveIdentifier resolves needle provided by the user
+func ResolveIdentifier(api *ScalewayAPI, needle string) []ScalewayIdentifier {
 	idents := api.Cache.LookUpIdentifiers(needle)
 	if len(idents) > 0 {
 		return idents
@@ -101,8 +113,8 @@ func resolveIdentifier(api *ScalewayAPI, needle string) []ScalewayIdentifier {
 	return idents
 }
 
-// resolveIdentifiers resolves needles provided by the user
-func resolveIdentifiers(api *ScalewayAPI, needles []string, out chan ScalewayResolvedIdentifier) {
+// ResolveIdentifiers resolves needles provided by the user
+func ResolveIdentifiers(api *ScalewayAPI, needles []string, out chan ScalewayResolvedIdentifier) {
 	// first attempt, only lookup from the cache
 	var unresolved []string
 	for _, needle := range needles {
@@ -131,8 +143,8 @@ func resolveIdentifiers(api *ScalewayAPI, needles []string, out chan ScalewayRes
 	close(out)
 }
 
-// inspectIdentifiers inspects identifiers concurrently
-func inspectIdentifiers(api *ScalewayAPI, ci chan ScalewayResolvedIdentifier, cj chan interface{}) {
+// InspectIdentifiers inspects identifiers concurrently
+func InspectIdentifiers(api *ScalewayAPI, ci chan ScalewayResolvedIdentifier, cj chan interface{}) {
 	var wg sync.WaitGroup
 	for {
 		idents, ok := <-ci
@@ -187,7 +199,8 @@ func inspectIdentifiers(api *ScalewayAPI, ci chan ScalewayResolvedIdentifier, cj
 	close(cj)
 }
 
-func createServer(api *ScalewayAPI, imageName string, name string, bootscript string, env string, additionalVolumes string) (string, error) {
+// CreateServer creates a server using API based on typical server fields
+func CreateServer(api *ScalewayAPI, imageName string, name string, bootscript string, env string, additionalVolumes string) (string, error) {
 	if name == "" {
 		name = strings.Replace(namesgenerator.GetRandomName(0), "_", "-", -1)
 	}
@@ -268,33 +281,23 @@ func WaitForServerReady(api *ScalewayAPI, serverID string) (*ScalewayServer, err
 
 	dest := fmt.Sprintf("%s:22", server.PublicAddress.IP)
 
-	err = WaitForTCPPortOpen(dest)
+	err = utils.WaitForTCPPortOpen(dest)
 	if err != nil {
 		return nil, err
 	}
 
 	return server, nil
 }
 
-// ScalewayImageInterface is an interface to multiple Scaleway items
-type ScalewayImageInterface struct {
-	CreationDate time.Time
-	Identifier   string
-	Name         string
-	Tag          string
-	VirtualSize  float64
-	Public       bool
-	Type         string
-}
-
 // ByCreationDate sorts images by CreationDate field
 type ByCreationDate []ScalewayImageInterface
 
 func (a ByCreationDate) Len() int           { return len(a) }
 func (a ByCreationDate) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
 func (a ByCreationDate) Less(i, j int) bool { return a[j].CreationDate.Before(a[i].CreationDate) }
 
-func startServer(api *ScalewayAPI, needle string, wait bool) error {
+// StartServer start a server based on its needle, can optionaly block while server is booting
+func StartServer(api *ScalewayAPI, needle string, wait bool) error {
 	server := api.GetServerID(needle)
 
 	err := api.PostServerAction(server, "poweron")
@@ -313,8 +316,9 @@ func startServer(api *ScalewayAPI, needle string, wait bool) error {
 	return nil
 }
 
-func startServerOnce(api *ScalewayAPI, needle string, wait bool, successChan chan bool, errChan chan error) {
-	err := startServer(api, needle, wait)
+// StartServerOnce wraps StartServer for golang channel
+func StartServerOnce(api *ScalewayAPI, needle string, wait bool, successChan chan bool, errChan chan error) {
+	err := StartServer(api, needle, wait)
 
 	if err != nil {
 		errChan <- err

api/types.go

@@ -0,0 +1,13 @@
+package api
+
+// Config is a Scaleway CLI configuration file
+type Config struct {
+	// APIEndpoint is the endpoint to the Scaleway API
+	APIEndPoint string `json:"api_endpoint"`
+
+	// Organization is the identifier of the Scaleway orgnization
+	Organization string `json:"organization"`
+
+	// Token is the authentication token for the Scaleway organization
+	Token string `json:"token"`
+}