// BelongsTo signifies a relationship between this model and a
// Parent. The Parent has the child, and the Child belongs
// to the Parent.
// Usage: BelongsTo("User")
func BelongsTo(parent string) {
if r, ok := relationalModelDefinition(false); ok {
idfield := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(inflect.Singularize(parent), true) + "ID",
Description: "Belongs To " + codegen.Goify(inflect.Singularize(parent), true),
Parent: r,
Datatype: gorma.BelongsTo,
DatabaseFieldName: SanitizeDBFieldName(codegen.Goify(inflect.Singularize(parent), true) + "ID"),
}
r.RelationalFields[idfield.Name] = idfield
bt, ok := r.Parent.RelationalModels[codegen.Goify(inflect.Singularize(parent), true)]
if ok {
r.BelongsTo[bt.Name] = bt
} else {
models := &gorma.RelationalModelDefinition{
Name: codegen.Goify(inflect.Singularize(parent), true),
Parent: r.Parent,
RelationalFields: make(map[string]*gorma.RelationalFieldDefinition),
BelongsTo: make(map[string]*gorma.RelationalModelDefinition),
HasMany: make(map[string]*gorma.RelationalModelDefinition),
HasOne: make(map[string]*gorma.RelationalModelDefinition),
ManyToMany: make(map[string]*gorma.ManyToManyDefinition),
}
r.BelongsTo[models.Name] = models
}
}
}
// generateContexts iterates through the version resources and actions and generates the action
// contexts.
func (g *Generator) generateContexts(verdir string, api *design.APIDefinition, version *design.APIVersionDefinition) error {
ctxFile := filepath.Join(verdir, "contexts.go")
ctxWr, err := NewContextsWriter(ctxFile)
if err != nil {
panic(err) // bug
}
title := fmt.Sprintf("%s: Application Contexts", version.Context())
imports := []*codegen.ImportSpec{
codegen.SimpleImport("fmt"),
codegen.SimpleImport("golang.org/x/net/context"),
codegen.SimpleImport("strconv"),
codegen.SimpleImport("strings"),
codegen.SimpleImport("time"),
codegen.SimpleImport("github.com/goadesign/goa"),
}
if !version.IsDefault() {
appPkg, err := AppPackagePath()
if err != nil {
return err
}
imports = append(imports, codegen.SimpleImport(appPkg))
}
ctxWr.WriteHeader(title, packageName(version), imports)
err = version.IterateResources(func(r *design.ResourceDefinition) error {
if !r.SupportsVersion(version.Version) {
return nil
}
return r.IterateActions(func(a *design.ActionDefinition) error {
ctxName := codegen.Goify(a.Name, true) + codegen.Goify(a.Parent.Name, true) + "Context"
headers := r.Headers.Merge(a.Headers)
if headers != nil && len(headers.Type.ToObject()) == 0 {
headers = nil // So that {{if .Headers}} returns false in templates
}
params := a.AllParams()
if params != nil && len(params.Type.ToObject()) == 0 {
params = nil // So that {{if .Params}} returns false in templates
}
ctxData := ContextTemplateData{
Name: ctxName,
ResourceName: r.Name,
ActionName: a.Name,
Payload: a.Payload,
Params: params,
Headers: headers,
Routes: a.Routes,
Responses: MergeResponses(r.Responses, a.Responses),
API: api,
Version: version,
DefaultPkg: TargetPackage,
}
return ctxWr.Execute(&ctxData)
})
})
g.genfiles = append(g.genfiles, ctxFile)
if err != nil {
return err
}
return ctxWr.FormatCode()
}
// generateContexts iterates through the API resources and actions and generates the action
// contexts.
func (g *Generator) generateContexts() error {
ctxFile := filepath.Join(g.OutDir, "contexts.go")
ctxWr, err := NewContextsWriter(ctxFile)
if err != nil {
panic(err) // bug
}
title := fmt.Sprintf("%s: Application Contexts", g.API.Context())
imports := []*codegen.ImportSpec{
codegen.SimpleImport("fmt"),
codegen.SimpleImport("golang.org/x/net/context"),
codegen.SimpleImport("strconv"),
codegen.SimpleImport("strings"),
codegen.SimpleImport("time"),
codegen.SimpleImport("unicode/utf8"),
codegen.SimpleImport("github.com/goadesign/goa"),
codegen.NewImport("uuid", "github.com/satori/go.uuid"),
}
g.genfiles = append(g.genfiles, ctxFile)
ctxWr.WriteHeader(title, g.Target, imports)
err = g.API.IterateResources(func(r *design.ResourceDefinition) error {
return r.IterateActions(func(a *design.ActionDefinition) error {
ctxName := codegen.Goify(a.Name, true) + codegen.Goify(a.Parent.Name, true) + "Context"
headers := r.Headers.Merge(a.Headers)
if headers != nil && len(headers.Type.ToObject()) == 0 {
headers = nil // So that {{if .Headers}} returns false in templates
}
params := a.AllParams()
if params != nil && len(params.Type.ToObject()) == 0 {
params = nil // So that {{if .Params}} returns false in templates
}
non101 := make(map[string]*design.ResponseDefinition)
for k, v := range a.Responses {
if v.Status != 101 {
non101[k] = v
}
}
ctxData := ContextTemplateData{
Name: ctxName,
ResourceName: r.Name,
ActionName: a.Name,
Payload: a.Payload,
Params: params,
Headers: headers,
Routes: a.Routes,
Responses: non101,
API: g.API,
DefaultPkg: g.Target,
Security: a.Security,
}
return ctxWr.Execute(&ctxData)
})
})
if err != nil {
return err
}
return ctxWr.FormatCode()
}
// Execute writes the code for the context types to the writer.
func (w *ContextsWriter) Execute(data *ContextTemplateData) error {
fn := template.FuncMap{
"hasAPIVersion": hasAPIVersion,
}
if err := w.ExecuteTemplate("context", ctxT, fn, data); err != nil {
return err
}
fn = template.FuncMap{
"newCoerceData": newCoerceData,
"arrayAttribute": arrayAttribute,
}
if err := w.ExecuteTemplate("new", ctxNewT, fn, data); err != nil {
return err
}
if data.Payload != nil {
if err := w.ExecuteTemplate("payload", payloadT, nil, data); err != nil {
return err
}
}
fn = template.FuncMap{
"project": func(mt *design.MediaTypeDefinition, v string) *design.MediaTypeDefinition {
p, _, _ := mt.Project(v)
return p
},
}
data.IterateResponses(func(resp *design.ResponseDefinition) error {
respData := map[string]interface{}{
"Context": data,
"Response": resp,
}
if resp.Type != nil {
respData["Type"] = resp.Type
if err := w.ExecuteTemplate("response", ctxTRespT, fn, respData); err != nil {
return err
}
} else if mt := design.Design.MediaTypeWithIdentifier(resp.MediaType); mt != nil {
respData["MediaType"] = mt
fn["respName"] = func(resp *design.ResponseDefinition, view string) string {
if view == "default" {
return codegen.Goify(resp.Name, true)
}
base := fmt.Sprintf("%s%s", resp.Name, strings.Title(view))
return codegen.Goify(base, true)
}
if err := w.ExecuteTemplate("response", ctxMTRespT, fn, respData); err != nil {
return err
}
} else {
if err := w.ExecuteTemplate("response", ctxNoMTRespT, fn, respData); err != nil {
return err
}
}
return nil
})
return nil
}
// generateContexts iterates through the API resources and actions and generates the action
// contexts.
func (g *Generator) generateContexts(api *design.APIDefinition) error {
ctxFile := filepath.Join(AppOutputDir(), "contexts.go")
ctxWr, err := NewContextsWriter(ctxFile)
if err != nil {
panic(err) // bug
}
title := fmt.Sprintf("%s: Application Contexts", api.Context())
imports := []*codegen.ImportSpec{
codegen.SimpleImport("fmt"),
codegen.SimpleImport("golang.org/x/net/context"),
codegen.SimpleImport("strconv"),
codegen.SimpleImport("strings"),
codegen.SimpleImport("time"),
codegen.SimpleImport("github.com/goadesign/goa"),
codegen.NewImport("uuid", "github.com/satori/go.uuid"),
}
ctxWr.WriteHeader(title, TargetPackage, imports)
err = api.IterateResources(func(r *design.ResourceDefinition) error {
return r.IterateActions(func(a *design.ActionDefinition) error {
ctxName := codegen.Goify(a.Name, true) + codegen.Goify(a.Parent.Name, true) + "Context"
headers := r.Headers.Merge(a.Headers)
if headers != nil && len(headers.Type.ToObject()) == 0 {
headers = nil // So that {{if .Headers}} returns false in templates
}
params := a.AllParams()
if params != nil && len(params.Type.ToObject()) == 0 {
params = nil // So that {{if .Params}} returns false in templates
}
ctxData := ContextTemplateData{
Name: ctxName,
ResourceName: r.Name,
ActionName: a.Name,
Payload: a.Payload,
Params: params,
Headers: headers,
Routes: a.Routes,
Responses: BuildResponses(r.Responses, a.Responses),
API: api,
DefaultPkg: TargetPackage,
Security: a.Security,
}
return ctxWr.Execute(&ctxData)
})
})
g.genfiles = append(g.genfiles, ctxFile)
if err != nil {
return err
}
return ctxWr.FormatCode()
}
// HasMany signifies a relationship between this model and a
// set of Children. The Parent has the children, and the Children belong
// to the Parent. The first parameter becomes the name of the
// field in the model struct, the second parameter is the name
// of the child model. The Child model will have a ParentID field
// appended to the field list. The Parent model definition will use
// the first parameter as the field name in the struct definition.
// Usage: HasMany("Orders", "Order")
// Struct field definition: Children []Child
func HasMany(name, child string) {
if r, ok := relationalModelDefinition(false); ok {
field := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(name, true),
HasMany: child,
Description: "has many " + inflect.Pluralize(child),
Datatype: gorma.HasMany,
Parent: r,
}
r.RelationalFields[field.Name] = field
var model *gorma.RelationalModelDefinition
model, ok := r.Parent.RelationalModels[child]
if ok {
r.HasMany[child] = model
// create the fk field
f := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(inflect.Singularize(r.Name), true) + "ID",
HasMany: child,
Description: "has many " + child,
Datatype: gorma.HasManyKey,
Parent: model,
DatabaseFieldName: SanitizeDBFieldName(codegen.Goify(inflect.Singularize(r.Name), true) + "ID"),
}
model.RelationalFields[f.Name] = f
} else {
model = &gorma.RelationalModelDefinition{
Name: child,
Parent: r.Parent,
RelationalFields: make(map[string]*gorma.RelationalFieldDefinition),
BelongsTo: make(map[string]*gorma.RelationalModelDefinition),
HasMany: make(map[string]*gorma.RelationalModelDefinition),
HasOne: make(map[string]*gorma.RelationalModelDefinition),
ManyToMany: make(map[string]*gorma.ManyToManyDefinition),
}
r.HasMany[child] = model
// create the fk field
f := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(inflect.Singularize(r.Name), true) + "ID",
HasMany: child,
Description: "has many " + child,
Datatype: gorma.HasManyKey,
Parent: model,
DatabaseFieldName: SanitizeDBFieldName(codegen.Goify(inflect.Singularize(r.Name), true) + "ID"),
}
model.RelationalFields[f.Name] = f
}
}
}
// Generate is the generator entry point called by the meta generator.
func Generate() (files []string, err error) {
var (
outDir, target, ver string
notest bool
)
set := flag.NewFlagSet("app", flag.PanicOnError)
set.String("design", "", "")
set.StringVar(&outDir, "out", "", "")
set.StringVar(&target, "pkg", "app", "")
set.StringVar(&ver, "version", "", "")
set.BoolVar(¬est, "notest", false, "")
set.Bool("force", false, "")
set.Parse(os.Args[1:])
outDir = filepath.Join(outDir, target)
if err := codegen.CheckVersion(ver); err != nil {
return nil, err
}
target = codegen.Goify(target, false)
g := &Generator{OutDir: outDir, Target: target, NoTest: notest, API: design.Design, validator: codegen.NewValidator()}
return g.Generate()
}
// return a ',' joined list of Params as a reference to cmd.XFieldName
// ordered by the required first rules.
func joinFieldhNames(atts ...*design.AttributeDefinition) string {
var elems []string
for _, att := range atts {
if att == nil {
continue
}
obj := att.Type.ToObject()
var names, optNames []string
keys := make([]string, len(obj))
i := 0
for n := range obj {
keys[i] = n
i++
}
sort.Strings(keys)
for _, n := range keys {
field := fmt.Sprintf("cmd.%s", codegen.Goify(n, true))
if att.IsRequired(n) {
names = append(names, field)
} else {
optNames = append(optNames, field)
}
}
elems = append(elems, names...)
elems = append(elems, optNames...)
}
return strings.Join(elems, ", ")
}
// Generate is the generator entry point called by the meta generator.
func Generate() (files []string, err error) {
var (
outDir, target, toolDir, tool, ver string
notool bool
)
dtool := defaultToolName(design.Design)
set := flag.NewFlagSet("client", flag.PanicOnError)
set.String("design", "", "")
set.StringVar(&outDir, "out", "", "")
set.StringVar(&target, "pkg", "client", "")
set.StringVar(&toolDir, "tooldir", "tool", "")
set.StringVar(&tool, "tool", dtool, "")
set.StringVar(&ver, "version", "", "")
set.BoolVar(¬ool, "notool", false, "")
set.Parse(os.Args[1:])
// First check compatibility
if err := codegen.CheckVersion(ver); err != nil {
return nil, err
}
// Now proceed
target = codegen.Goify(target, false)
g := &Generator{OutDir: outDir, Target: target, ToolDirName: toolDir, Tool: tool, NoTool: notool, API: design.Design}
return g.Generate()
}
// Generated package name for resources supporting the given version.
func packageName(version *design.APIVersionDefinition) (pack string) {
pack = TargetPackage
if version.Version != "" {
pack = codegen.Goify(codegen.VersionPackage(version.Version), false)
}
return
}
// PopulateFromModeledType creates fields for the model
// based on the goa UserTypeDefinition it models.
// This happens before fields are processed, so it's
// ok to just assign without testing.
func (f *RelationalModelDefinition) PopulateFromModeledType() {
if f.BuiltFrom == nil {
return
}
for _, mt := range f.BuiltFrom {
obj := mt.ToObject()
obj.IterateAttributes(func(name string, att *design.AttributeDefinition) error {
rf := &RelationalFieldDefinition{}
rf.Parent = f
rf.Name = codegen.Goify(name, true)
if strings.HasSuffix(rf.Name, "Id") {
rf.Name = strings.TrimSuffix(rf.Name, "Id")
rf.Name = rf.Name + "ID"
}
switch att.Type.Kind() {
case design.BooleanKind:
rf.Datatype = Boolean
case design.IntegerKind:
rf.Datatype = Integer
case design.NumberKind:
rf.Datatype = Decimal
case design.StringKind:
rf.Datatype = String
case design.DateTimeKind:
rf.Datatype = Timestamp
default:
dslengine.ReportError("Unsupported type: %#v ", att.Type.Kind())
}
f.RelationalFields[rf.Name] = rf
return nil
})
}
return
}
// generateHrefs iterates through the API resources and generates the href factory methods.
func (g *Generator) generateHrefs(api *design.APIDefinition) error {
hrefFile := filepath.Join(AppOutputDir(), "hrefs.go")
resWr, err := NewResourcesWriter(hrefFile)
if err != nil {
panic(err) // bug
}
title := fmt.Sprintf("%s: Application Resource Href Factories", api.Context())
imports := []*codegen.ImportSpec{
codegen.SimpleImport("fmt"),
}
resWr.WriteHeader(title, TargetPackage, imports)
err = api.IterateResources(func(r *design.ResourceDefinition) error {
m := api.MediaTypeWithIdentifier(r.MediaType)
var identifier string
if m != nil {
identifier = m.Identifier
} else {
identifier = "text/plain"
}
data := ResourceData{
Name: codegen.Goify(r.Name, true),
Identifier: identifier,
Description: r.Description,
Type: m,
CanonicalTemplate: codegen.CanonicalTemplate(r),
CanonicalParams: codegen.CanonicalParams(r),
}
return resWr.Execute(&data)
})
g.genfiles = append(g.genfiles, hrefFile)
if err != nil {
return err
}
return resWr.FormatCode()
}
// join is a code generation helper function that generates a function signature built from
// concatenating the properties (name type) of the given attribute type (assuming it's an object).
// join accepts an optional slice of strings which indicates the order in which the parameters
// should appear in the signature. If pos is specified then it must list all the parameters. If
// it's not specified then parameters are sorted alphabetically.
func join(att *design.AttributeDefinition, pos ...[]string) string {
if att == nil {
return ""
}
obj := att.Type.ToObject()
elems := make([]string, len(obj))
var keys []string
if len(pos) > 0 {
keys = pos[0]
if len(keys) != len(obj) {
panic("invalid position slice, lenght does not match attribute field count") // bug
}
} else {
keys = make([]string, len(obj))
i := 0
for n := range obj {
keys[i] = n
i++
}
sort.Strings(keys)
}
for i, n := range keys {
a := obj[n]
elems[i] = fmt.Sprintf("%s %s", codegen.Goify(n, false), cmdFieldType(a.Type))
}
return strings.Join(elems, ", ")
}
// PKAttributes constructs a pair of field + definition strings
// useful for method parameters.
func (f *RelationalModelDefinition) PKAttributes() string {
var attr []string
for _, pk := range f.PrimaryKeys {
attr = append(attr, fmt.Sprintf("%s %s", codegen.Goify(pk.DatabaseFieldName, false), goDatatype(pk, true)))
}
return strings.Join(attr, ",")
}
// HasOne signifies a relationship between this model and another model.
// If this model HasOne(OtherModel), then OtherModel is expected
// to have a ThisModelID field as a Foreign Key to this model's
// Primary Key. ThisModel will have a field named OtherModel of type
// OtherModel.
// Usage: HasOne("Proposal")
func HasOne(child string) {
if r, ok := relationalModelDefinition(false); ok {
field := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(inflect.Singularize(child), true),
HasOne: child,
Description: "has one " + child,
Datatype: gorma.HasOne,
Parent: r,
}
r.RelationalFields[field.Name] = field
bt, ok := r.Parent.RelationalModels[child]
if ok {
r.HasOne[child] = bt
// create the fk field
f := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(inflect.Singularize(r.Name), true) + "ID",
HasOne: child,
Description: "has one " + child,
Datatype: gorma.HasOneKey,
Parent: bt,
DatabaseFieldName: SanitizeDBFieldName(codegen.Goify(inflect.Singularize(r.Name), true) + "ID"),
}
bt.RelationalFields[f.Name] = f
} else {
models := &gorma.RelationalModelDefinition{
Name: child,
Parent: r.Parent,
RelationalFields: make(map[string]*gorma.RelationalFieldDefinition),
BelongsTo: make(map[string]*gorma.RelationalModelDefinition),
HasMany: make(map[string]*gorma.RelationalModelDefinition),
HasOne: make(map[string]*gorma.RelationalModelDefinition),
ManyToMany: make(map[string]*gorma.ManyToManyDefinition),
}
r.HasOne[child] = models
// create the fk field
f := &gorma.RelationalFieldDefinition{
Name: codegen.Goify(inflect.Singularize(r.Name), true) + "ID",
HasOne: child,
Description: "has one " + child,
Datatype: gorma.HasOneKey,
Parent: bt,
DatabaseFieldName: SanitizeDBFieldName(codegen.Goify(inflect.Singularize(r.Name), true) + "ID"),
}
models.RelationalFields[f.Name] = f
}
}
}
// pathParamNames return the names of the parameters of the path factory function for the given route.
func pathParamNames(r *design.RouteDefinition) string {
params := r.Params()
goified := make([]string, len(params))
for i, p := range params {
goified[i] = codegen.Goify(p, false)
}
return strings.Join(goified, ", ")
}
// PKWhereFields returns the fields for a where clause for the primary
// keys of a model.
func (f *RelationalModelDefinition) PKWhereFields() string {
var pkwhere []string
for _, pk := range f.PrimaryKeys {
def := fmt.Sprintf("%s", codegen.Goify(pk.DatabaseFieldName, false))
pkwhere = append(pkwhere, def)
}
return strings.Join(pkwhere, ",")
}
func viewFieldNames(ut *RelationalModelDefinition, v *design.ViewDefinition) []string {
obj := v.Type.(design.Object)
var fields []string
for name := range obj {
if obj[name].Type.IsPrimitive() {
if strings.TrimSpace(name) != "" && name != "links" {
bf, ok := ut.RelationalFields[codegen.Goify(name, true)]
if ok {
fields = append(fields, "&"+codegen.Goify(bf.FieldName, false))
}
}
}
}
sort.Strings(fields)
return fields
}
// SanitizeFieldName is exported for testing purposes
func SanitizeFieldName(name string) string {
name = codegen.Goify(name, true)
if strings.HasSuffix(name, "Id") {
name = strings.TrimSuffix(name, "Id")
name = name + "ID"
}
return name
}
// generateUserTypes iterates through the user types and generates the data structures and
// marshaling code.
func (g *Generator) generateUserTypes(outdir string, api *design.APIDefinition) error {
var modelname, filename string
err := GormaDesign.IterateStores(func(store *RelationalStoreDefinition) error {
err := store.IterateModels(func(model *RelationalModelDefinition) error {
modelname = strings.ToLower(codegen.Goify(model.ModelName, false))
filename = fmt.Sprintf("%s.go", modelname)
utFile := filepath.Join(outdir, filename)
err := os.RemoveAll(utFile)
if err != nil {
fmt.Println(err)
}
utWr, err := NewUserTypesWriter(utFile)
if err != nil {
panic(err) // bug
}
title := fmt.Sprintf("%s: Models", api.Context())
imports := []*codegen.ImportSpec{
codegen.SimpleImport(g.appPkgPath),
codegen.SimpleImport("time"),
codegen.SimpleImport("github.com/goadesign/goa"),
codegen.SimpleImport("github.com/jinzhu/gorm"),
codegen.SimpleImport("golang.org/x/net/context"),
codegen.SimpleImport("golang.org/x/net/context"),
codegen.SimpleImport("github.com/goadesign/goa/uuid"),
}
if model.Cached {
imp := codegen.NewImport("cache", "github.com/patrickmn/go-cache")
imports = append(imports, imp)
imp = codegen.SimpleImport("strconv")
imports = append(imports, imp)
}
utWr.WriteHeader(title, g.target, imports)
data := &UserTypeTemplateData{
APIDefinition: api,
UserType: model,
DefaultPkg: g.target,
AppPkg: g.appPkgPath,
}
err = utWr.Execute(data)
g.genfiles = append(g.genfiles, utFile)
if err != nil {
fmt.Println(err)
return err
}
err = utWr.FormatCode()
if err != nil {
fmt.Println(err)
}
return err
})
return err
})
return err
}
// newCoerceData is a helper function that creates a map that can be given to the "Coerce" template.
func newCoerceData(name string, att *design.AttributeDefinition, pointer bool, pkg string, depth int) map[string]interface{} {
return map[string]interface{}{
"Name": name,
"VarName": codegen.Goify(name, false),
"Pointer": pointer,
"Attribute": att,
"Pkg": pkg,
"Depth": depth,
}
}
func attToObject(name string, parent, att *design.AttributeDefinition) *ObjectType {
obj := &ObjectType{}
obj.Label = name
obj.Name = codegen.Goify(name, false)
obj.Type = codegen.GoTypeRef(att.Type, nil, 0, false)
if att.Type.IsPrimitive() && parent.IsPrimitivePointer(name) {
obj.Pointer = "*"
}
return obj
}
// MediaTypeRef produces the JSON reference to the media type definition with the given view.
func MediaTypeRef(api *design.APIDefinition, mt *design.MediaTypeDefinition, view string) string {
if _, ok := Definitions[mt.TypeName]; !ok {
GenerateMediaTypeDefinition(api, mt, view)
}
ref := fmt.Sprintf("#/definitions/%s", mt.TypeName)
if view != "default" {
ref += codegen.Goify(view, true)
}
return ref
}
// PKUpdateFields returns something? This function doesn't look useful in
// current form. Perhaps it isn't.
func (f *RelationalModelDefinition) PKUpdateFields(modelname string) string {
var pkwhere []string
for _, pk := range f.PrimaryKeys {
def := fmt.Sprintf("%s.%s", modelname, codegen.Goify(pk.FieldName, true))
pkwhere = append(pkwhere, def)
}
pkw := strings.Join(pkwhere, ",")
return pkw
}
// fileServerMethod returns the name of the client method for downloading assets served by the given
// file server.
// Note: the implementation opts for generating good names rather than names that are guaranteed to
// be unique. This means that the generated code could be potentially incorrect in the rare cases
// where it produces the same names for two different file servers. This should be addressed later
// (when it comes up?) using metadata to let users override the default.
func (g *Generator) fileServerMethod(fs *design.FileServerDefinition) string {
var (
suffix string
wcs = design.ExtractWildcards(fs.RequestPath)
reqElems = strings.Split(fs.RequestPath, "/")
)
if len(wcs) == 0 {
suffix = path.Base(fs.RequestPath)
ext := filepath.Ext(suffix)
suffix = strings.TrimSuffix(suffix, ext)
suffix += codegen.Goify(ext, true)
} else {
if len(reqElems) == 1 {
suffix = filepath.Base(fs.RequestPath)
suffix = suffix[1:] // remove "*" prefix
} else {
suffix = reqElems[len(reqElems)-2] // should work most of the time
}
}
return "Download" + codegen.Goify(suffix, true)
}
// joinNames is a code generation helper function that generates a string built from concatenating
// the keys of the given attribute type (assuming it's an object).
func joinNames(att *design.AttributeDefinition) string {
if att == nil {
return ""
}
obj := att.Type.ToObject()
names := make([]string, len(obj))
i := 0
for n := range obj {
names[i] = fmt.Sprintf("cmd.%s", codegen.Goify(n, true))
i++
}
sort.Strings(names)
return strings.Join(names, ", ")
}
func (g *Generator) okResp(a *design.ActionDefinition) map[string]interface{} {
var ok *design.ResponseDefinition
for _, resp := range a.Responses {
if resp.Status == 200 {
ok = resp
break
}
}
if ok == nil {
return nil
}
var mt *design.MediaTypeDefinition
var ok2 bool
if mt, ok2 = design.Design.MediaTypes[design.CanonicalIdentifier(ok.MediaType)]; !ok2 {
return nil
}
view := ok.ViewName
if view == "" {
view = design.DefaultView
}
pmt, _, err := mt.Project(view)
if err != nil {
return nil
}
var typeref string
if pmt.IsError() {
typeref = `goa.ErrInternal("not implemented")`
} else {
name := codegen.GoTypeRef(pmt, pmt.AllRequired(), 1, false)
var pointer string
if strings.HasPrefix(name, "*") {
name = name[1:]
pointer = "*"
}
typeref = fmt.Sprintf("%s%s.%s", pointer, g.Target, name)
if strings.HasPrefix(typeref, "*") {
typeref = "&" + typeref[1:]
}
typeref += "{}"
}
var nameSuffix string
if view != "default" {
nameSuffix = codegen.Goify(view, true)
}
return map[string]interface{}{
"Name": ok.Name + nameSuffix,
"GoType": codegen.GoNativeType(pmt),
"TypeRef": typeref,
}
}
// hasAPIVersion returns true if the given attribute has a child attribute whose goified name is
// "APIVersion". This is used to not generate the built in APIVersion when such a field exists.
func hasAPIVersion(params *design.AttributeDefinition) bool {
if params == nil {
return false
}
o := params.Type.ToObject()
if o == nil {
return false
}
for n := range o {
if codegen.Goify(n, true) == "APIVersion" {
return true
}
}
return false
}
func viewSelect(ut *RelationalModelDefinition, v *design.ViewDefinition) string {
obj := v.Type.(design.Object)
var fields []string
for name := range obj {
if obj[name].Type.IsPrimitive() {
if strings.TrimSpace(name) != "" && name != "links" {
bf, ok := ut.RelationalFields[codegen.Goify(name, true)]
if ok {
fields = append(fields, bf.DatabaseFieldName)
}
}
}
}
sort.Strings(fields)
return strings.Join(fields, ",")
}
// generateHrefs iterates through the version resources and generates the href factory methods.
func (g *Generator) generateHrefs(verdir string, version *design.APIVersionDefinition) error {
hrefFile := filepath.Join(verdir, "hrefs.go")
resWr, err := NewResourcesWriter(hrefFile)
if err != nil {
panic(err) // bug
}
title := fmt.Sprintf("%s: Application Resource Href Factories", version.Context())
imports := []*codegen.ImportSpec{
codegen.SimpleImport("fmt"),
}
resWr.WriteHeader(title, packageName(version), imports)
err = version.IterateResources(func(r *design.ResourceDefinition) error {
if !r.SupportsVersion(version.Version) {
return nil
}
m := design.Design.MediaTypeWithIdentifier(r.MediaType)
var identifier string
if m != nil {
identifier = m.Identifier
} else {
identifier = "plain/text"
}
canoTemplate := r.URITemplate(version)
canoTemplate = design.WildcardRegex.ReplaceAllLiteralString(canoTemplate, "/%v")
var canoParams []string
if ca := r.CanonicalAction(); ca != nil {
if len(ca.Routes) > 0 {
canoParams = ca.Routes[0].Params(version)
}
}
data := ResourceData{
Name: codegen.Goify(r.Name, true),
Identifier: identifier,
Description: r.Description,
Type: m,
CanonicalTemplate: canoTemplate,
CanonicalParams: canoParams,
}
return resWr.Execute(&data)
})
g.genfiles = append(g.genfiles, hrefFile)
if err != nil {
return err
}
return resWr.FormatCode()
}
