can now handle complexe mongo urls

api.go

@@ -8,10 +8,12 @@ import (
 	"labix.org/v2/mgo"
 	"labix.org/v2/mgo/bson"
 	"net/http"
+	"net/url"
 	"strconv"
 )
 
 type VultureBackend struct {
+	MongoURL   string
 	Client     *mgo.Session
 	Db         *mgo.Database
 	Collection *mgo.Collection
@@ -20,20 +22,25 @@ type VultureBackend struct {
 func GetVultureBackend(req *http.Request) (*VultureBackend, error) {
 	vars := mux.Vars(req)
 
-	serverURL, ok := vars["server"]
+	serverName, ok := vars["server"]
 	if !ok {
 		return nil, errors.New("server field not specified")
 	}
-	client, err := shared.GetMongoClient(serverURL)
+	mongoURL, ok := params.MongoServers.GetServerUrl(serverName)
+	if !ok {
+		return nil, errors.New("no server for asked name.")
+	}
+
+	client, err := shared.GetMongoClient(mongoURL)
 	if err != nil {
 		return nil, err
 	}
-	vb := &VultureBackend{Client: client}
-	vb.setDatabaseCollection(req)
+	vb := &VultureBackend{Client: client, MongoURL: mongoURL}
+	vb.setDatabaseAndCollection(req)
 	return vb, nil
 }
 
-func (this *VultureBackend) setDatabaseCollection(req *http.Request) {
+func (this *VultureBackend) setDatabaseAndCollection(req *http.Request) {
 	vars := mux.Vars(req)
 	database, ok := vars["database"]
 	if !ok {
@@ -49,7 +56,23 @@ func (this *VultureBackend) setDatabaseCollection(req *http.Request) {
 }
 
 func (this *VultureBackend) GetDataBases() ([]string, error) {
-	return this.Client.DatabaseNames()
+
+	dbs, err := this.Client.DatabaseNames()
+	if err == nil {
+		return dbs, nil
+	} else if err.Error() == "unauthorized" {
+		return this.getDatabaseFromMongoURL()
+	} else {
+		return nil, err
+	}
+}
+
+func (this *VultureBackend) getDatabaseFromMongoURL() ([]string, error) {
+	u, e := url.Parse(this.MongoURL)
+	if e != nil {
+		return nil, errors.New("cannot extract database from url")
+	}
+	return []string{u.Path[1:len(u.Path)]}, nil
 }
 
 func (this *VultureBackend) GetCollections() ([]string, error) {
@@ -121,7 +144,11 @@ func (this *VultureBackend) GetAllDocuments(query interface{}) (interface{}, err
 }
 
 func getAvailableServers(w http.ResponseWriter, request *http.Request) (interface{}, error) {
-	return params.MongoServers, nil
+	ret := make([]string, len(params.MongoServers))
+	for i, ms := range params.MongoServers {
+		ret[i] = ms.Name
+	}
+	return ret, nil
 }
 
 func getAvailableDataBases(w http.ResponseWriter, request *http.Request) (interface{}, error) {

client/coffee/filters.coffee

@@ -1,7 +1,7 @@
 root = this;
 
 root.filters.filter 'escape', () ->
-  return window.escape;
+  return window.encodeURIComponent;
 
 
 root.filters.filter 'replaceAllCommasBySpaces', () ->

handlerWrapper.go

@@ -13,6 +13,7 @@ type errorWrapper struct {
 type ApiHandler func(w http.ResponseWriter, request *http.Request) (interface{}, error)
 
 func (this ApiHandler) ServeHTTP(w http.ResponseWriter, request *http.Request) {
+	log.Println("request for", request.URL)
 	ret, err := this(w, request)
 	if err != nil {
 		log.Println(err)

main.go

@@ -14,10 +14,26 @@ import (
 const PARAM_FILE string = "params.yml"
 const STATIC_DIR string = "client"
 
+type MongoServer struct {
+	Name string `yaml:"name"`
+	Url  string `yaml:"url"`
+}
+
+type MongoServers []*MongoServer
+
+func (this MongoServers) GetServerUrl(name string) (url string, found bool) {
+	for _, server := range this {
+		if server.Name == name {
+			return server.Url, true
+		}
+	}
+	return "", false
+}
+
 type Params struct {
-	Port           int      `yaml:"Port,omitempty"`
-	ServingAddress string   `yaml:"ServingAddress,omitempty"`
-	MongoServers   []string `yaml:"MongoServers,omitempty"`
+	Port           int          `yaml:"Port,omitempty"`
+	ServingAddress string       `yaml:"ServingAddress,omitempty"`
+	MongoServers   MongoServers `yaml:"MongoServers,omitempty"`
 }
 
 func (this *Params) LoadFromYamlFile(fileName string) error {
@@ -47,7 +63,11 @@ func (this *Params) LoadFromYamlData(data []byte) error {
 	return nil
 }
 
-var params = &Params{8000, "localhost", []string{"localhost:27017"}}
+func GetDefaultParams() *Params {
+	return &Params{8000, "localhost", MongoServers{&MongoServer{Name: "localhost", Url: "localhost:27017"}}}
+}
+
+var params = GetDefaultParams()
 
 func init() {
 	if err := params.LoadFromYamlFile(PARAM_FILE); err != nil {

main_test.go

@@ -6,19 +6,25 @@ import (
 	"net/http/httptest"
 	"os"
 	"path"
-	"reflect"
 	"testing"
 )
 
-func TestLoadFromYamlDataAndInitialParams(t *testing.T) {
+func TestInitialParams(t *testing.T) {
+	params := GetDefaultParams()
 	if params.Port != 8000 {
 		t.Error("wrong port")
 	}
 	if params.ServingAddress != "localhost" {
 		t.Error("wrong png dpi")
 	}
-	if !reflect.DeepEqual(params.MongoServers, []string{"localhost:27017"}) {
-		t.Fail()
+	if len(params.MongoServers) != 1 {
+
+		t.Error("bad default number of mongo servers", len(params.MongoServers))
+		return
+	}
+	ms := params.MongoServers[0]
+	if ms.Name != "localhost" || ms.Url != "localhost:27017" {
+		t.Error("bad ms", ms)
 	}
 }
 
@@ -28,7 +34,6 @@ func createMockStaticFile() (*os.File, error) {
 		return nil, err
 	}
 	return f, ioutil.WriteFile(f.Name(), []byte("hello world"), 0600)
-
 }
 
 func TestServingStaticFiles(t *testing.T) {

params.yml

@@ -12,5 +12,12 @@ Port: 8000
 #  should use `0.0.0.0`
 ServingAddress: localhost
 
+#  The list of mongo servers.  Each server is an object with a field *name* that will
+#  be shown in the web user interface and a *url* field that points to the mongo server
 MongoServers:
-    - localhost:27017
+    -
+      name: localhost
+      url: localhost:27017
+  # -
+  #  name: example
+  #  url: mongodb://username:password@ds90210.mongolab.com:52652/database_name