basic logic for switching alias from local/global

api.go

@@ -2,11 +2,12 @@ package main
 
 import (
 	//"context"
+	"encoding/json"
 	"errors"
 	"fmt"
 	garage "git.deuxfleurs.fr/garage-sdk/garage-admin-sdk-golang"
 	"github.com/go-ldap/ldap/v3"
-	//"github.com/gorilla/mux"
+	"github.com/gorilla/mux"
 	"log"
 	"net/http"
 	"strings"
@@ -111,21 +112,132 @@ func checkLoginAndS3API(w http.ResponseWriter, r *http.Request) (*LoginStatus, *
 	return login, keyPair, err
 }
 
+type ApiQuotaView struct {
+	files *uint64
+	size  *uint64
+}
+
+type ApiBucketView struct {
+	global *bool
+	max    *ApiQuotaView
+	used   *ApiQuotaView
+}
+
+type BucketRequest struct {
+	s3key      *garage.KeyInfo
+	bucketName string
+	bucketId   string
+	global     bool
+	http       *http.Request
+}
+
 func handleAPIGarageBucket(w http.ResponseWriter, r *http.Request) {
-	login, s3key, err := checkLoginAndS3API(w, r)
+	br, err := buildBucketRequest(w, r)
 	if err != nil {
-		log.Println(err)
 		return
 	}
 
-	// CHECK PATCH REQUEST
+	if r.Method == http.MethodPatch {
+		patchGarageBucket(w, br)
+		return
+	}
 
-	// READ BODY JSON
+	if r.Method == http.MethodGet {
+		getGarageBucket(w, br)
+		return
+	}
 
-	// VALIDATE OBJECT
+	http.Error(w, "This method is not implemented for this endpoint", http.StatusNotImplemented)
-	// --- bucket query parameter ---
+	return
-	// 1. bucket must be owned by the key with owner permission, otherwise throw "unauthorized" (401)
+}
-	// 2. must not end with deuxfleurs.fr or deuxfleurs.org, otherwise throw "forbidden" (403)
+
+func buildBucketRequest(w http.ResponseWriter, r *http.Request) (*BucketRequest, error) {
+	_, s3key, err := checkLoginAndS3API(w, r)
+	if err != nil {
+		http.Error(w, "Unable to connect on LDAP", http.StatusUnauthorized)
+		return nil, err
+	}
+
+	// FETCH BUCKET ID by iterating over buckets owned by this key
+	bucketName := mux.Vars(r)["bucket"]
+	var bucketId *string
+	var global *bool
+
+findBucketIdLoop:
+	for _, bucket := range s3key.Buckets {
+		for _, localAlias := range bucket.LocalAliases {
+			if localAlias == bucketName {
+				bucketId = bucket.Id
+				*global = false
+				break findBucketIdLoop
+			}
+		}
+		for _, globalAlias := range bucket.GlobalAliases {
+			if globalAlias == bucketName {
+				bucketId = bucket.Id
+				*global = true
+				break findBucketIdLoop
+			}
+		}
+	}
+
+	if bucketId == nil || global == nil {
+		http.Error(w, "Bucket not found in this account", http.StatusNotFound)
+		return nil, errors.New("Unable to fetch bucket ID")
+	}
+
+	return &BucketRequest{
+		s3key:      s3key,
+		bucketName: bucketName,
+		bucketId:   *bucketId,
+		global:     *global,
+		http:       r,
+	}, nil
+}
+
+func patchGarageBucket(w http.ResponseWriter, br *BucketRequest) {
+	var err error
+
+	// DECODE BODY
+	var queuedChange ApiBucketView
+	decoder := json.NewDecoder(br.http.Body)
+	err = decoder.Decode(&queuedChange)
+	if err != nil {
+		log.Println(err)
+		http.Error(w, "Unable to decode the body", http.StatusBadRequest)
+		return
+	}
+
+	// SET THE GLOBAL FLAG
+	if queuedChange.global != nil {
+		if *queuedChange.global && !br.global {
+			_, err = grgAddGlobalAlias(br.bucketId, br.bucketName)
+			if err != nil {
+				http.Error(w, "Unable to add the requested name as global alias for this bucket", http.StatusInternalServerError)
+				return
+			}
+			_, err = grgDelLocalAlias(br.bucketId, *br.s3key.AccessKeyId, br.bucketName)
+			if err != nil {
+				http.Error(w, "Unable to remove the local alias for this bucket", http.StatusInternalServerError)
+				return
+			}
+		} else if !*queuedChange.global && br.global {
+			grgAddLocalAlias(br.bucketId, *br.s3key.AccessKeyId, br.bucketName)
+			if err != nil {
+				http.Error(w, "Unable to add the requested name as local alias for this bucket", http.StatusInternalServerError)
+				return
+			}
+			grgDelGlobalAlias(br.bucketId, br.bucketName)
+			if err != nil {
+				http.Error(w, "Unable to remove the global alias for this bucket", http.StatusInternalServerError)
+				return
+			}
+		}
+	}
+
+	// CHECK IF QUOTA MUST BE ADDED TO THIS BUCKET
+
+	// VALIDATE IT
 	// --- global ---
 	// 1. can be true, false, or nil (use pointers)
 	// 2. if nil do nothing
@@ -137,17 +249,28 @@ func handleAPIGarageBucket(w http.ResponseWriter, r *http.Request) {
 	// --- quota.files ---
 	// 1. if no quota on the bucket + this field is none, set to 10k
 	// 2. if lower than 10k, set to 10k. If higher than 40k, set to 40k
+	// READ BODY JSON
 
 	// IF BODY.GLOBAL is not NONE
-	// Add an alias
+	// DO: Add an alias
 
 	// IF BODY.QUOTA.SIZE is not NONE
-	// Change quota
+	// DO: Change quota
 
 	// IF BODY.QUOTA.FILE is not NONE
-	// Change quota
+	// DO: Change quota
 
-	log.Println(login, s3key)
+	getGarageBucket(w, br)
-
+}
-	return
+
+func getGarageBucket(w http.ResponseWriter, br *BucketRequest) {
+	// FETCH AN UPDATED BUCKET VIEW
+	bucket, err := grgGetBucket(br.bucketId)
+	if err != nil {
+		http.Error(w, "Unable to fetch bucket details", http.StatusInternalServerError)
+		return
+	}
+
+	// BUILD A VIEW
+	log.Println(bucket)
 }

garage.go

@@ -97,12 +97,56 @@ func grgCreateWebsite(gkey, bucket string) (*garage.BucketInfo, error) {
 	return binfo, nil
 }
 
+func grgAddGlobalAlias(bid, alias string) (*garage.BucketInfo, error) {
+	client, ctx := gadmin()
+
+	resp, _, err := client.BucketApi.PutBucketGlobalAlias(ctx).Id(bid).Alias(alias).Execute()
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+	return resp, nil
+}
+
+func grgAddLocalAlias(bid, key, alias string) (*garage.BucketInfo, error) {
+	client, ctx := gadmin()
+
+	resp, _, err := client.BucketApi.PutBucketLocalAlias(ctx).Id(bid).AccessKeyId(key).Alias(alias).Execute()
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+	return resp, nil
+}
+
+func grgDelGlobalAlias(bid, alias string) (*garage.BucketInfo, error) {
+	client, ctx := gadmin()
+
+	resp, _, err := client.BucketApi.DeleteBucketGlobalAlias(ctx).Id(bid).Alias(alias).Execute()
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+	return resp, nil
+}
+
+func grgDelLocalAlias(bid, key, alias string) (*garage.BucketInfo, error) {
+	client, ctx := gadmin()
+
+	resp, _, err := client.BucketApi.DeleteBucketLocalAlias(ctx).Id(bid).AccessKeyId(key).Alias(alias).Execute()
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+	return resp, nil
+}
+
 func grgGetBucket(bid string) (*garage.BucketInfo, error) {
 	client, ctx := gadmin()
 
 	resp, _, err := client.BucketApi.GetBucketInfo(ctx, bid).Execute()
 	if err != nil {
-		fmt.Printf("%+v\n", err)
+		log.Println(err)
 		return nil, err
 	}
 	return resp, nil

main.go

@@ -130,7 +130,7 @@ func main() {
 	r.HandleFunc("/", handleHome)
 	r.HandleFunc("/logout", handleLogout)
 
-	r.HandleFunc("/api/unstable/garage/bucket/{b}", handleAPIGarageBucket)
+	r.HandleFunc("/api/unstable/garage/bucket/{bucket}", handleAPIGarageBucket)
 
 	r.HandleFunc("/profile", handleProfile)
 	r.HandleFunc("/passwd", handlePasswd)