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package codegen
import (
"log"
"os"
"path/filepath"
"regexp"
"syscall"
"github.com/99designs/gqlgen/codegen/templates"
"github.com/pkg/errors"
"github.com/vektah/gqlparser"
"github.com/vektah/gqlparser/ast"
"github.com/vektah/gqlparser/gqlerror"
)
func Generate(cfg Config) error {
if err := cfg.normalize(); err != nil {
return err
}
_ = syscall.Unlink(cfg.Exec.Filename)
_ = syscall.Unlink(cfg.Model.Filename)
modelsBuild, err := cfg.models()
if err != nil {
return errors.Wrap(err, "model plan failed")
}
if len(modelsBuild.Models) > 0 || len(modelsBuild.Enums) > 0 {
if err = templates.RenderToFile("models.gotpl", cfg.Model.Filename, modelsBuild); err != nil {
return err
}
for _, model := range modelsBuild.Models {
modelCfg := cfg.Models[model.GQLType]
modelCfg.Model = cfg.Model.ImportPath() + "." + model.GoType
cfg.Models[model.GQLType] = modelCfg
}
for _, enum := range modelsBuild.Enums {
modelCfg := cfg.Models[enum.GQLType]
modelCfg.Model = cfg.Model.ImportPath() + "." + enum.GoType
cfg.Models[enum.GQLType] = modelCfg
}
}
build, err := cfg.bind()
if err != nil {
return errors.Wrap(err, "exec plan failed")
}
if err := templates.RenderToFile("generated.gotpl", cfg.Exec.Filename, build); err != nil {
return err
}
if cfg.Resolver.IsDefined() {
if err := generateResolver(cfg); err != nil {
return errors.Wrap(err, "generating resolver failed")
}
}
if err := cfg.validate(); err != nil {
return errors.Wrap(err, "validation failed")
}
return nil
}
func GenerateServer(cfg Config, filename string) error {
if err := cfg.Exec.normalize(); err != nil {
return errors.Wrap(err, "exec")
}
if err := cfg.Resolver.normalize(); err != nil {
return errors.Wrap(err, "resolver")
}
serverFilename := abs(filename)
serverBuild := cfg.server(filepath.Dir(serverFilename))
if _, err := os.Stat(serverFilename); os.IsNotExist(errors.Cause(err)) {
err = templates.RenderToFile("server.gotpl", serverFilename, serverBuild)
if err != nil {
return errors.Wrap(err, "generate server failed")
}
} else {
log.Printf("Skipped server: %s already exists\n", serverFilename)
}
return nil
}
func generateResolver(cfg Config) error {
resolverBuild, err := cfg.resolver()
if err != nil {
return errors.Wrap(err, "resolver build failed")
}
filename := cfg.Resolver.Filename
if resolverBuild.ResolverFound {
log.Printf("Skipped resolver: %s.%s already exists\n", cfg.Resolver.ImportPath(), cfg.Resolver.Type)
return nil
}
if _, err := os.Stat(filename); os.IsNotExist(errors.Cause(err)) {
if err := templates.RenderToFile("resolver.gotpl", filename, resolverBuild); err != nil {
return err
}
} else {
log.Printf("Skipped resolver: %s already exists\n", filename)
}
return nil
}
func (cfg *Config) normalize() error {
if err := cfg.Model.normalize(); err != nil {
return errors.Wrap(err, "model")
}
if err := cfg.Exec.normalize(); err != nil {
return errors.Wrap(err, "exec")
}
if cfg.Resolver.IsDefined() {
if err := cfg.Resolver.normalize(); err != nil {
return errors.Wrap(err, "resolver")
}
}
builtins := TypeMap{
"__Directive": {Model: "github.com/99designs/gqlgen/graphql/introspection.Directive"},
"__Type": {Model: "github.com/99designs/gqlgen/graphql/introspection.Type"},
"__Field": {Model: "github.com/99designs/gqlgen/graphql/introspection.Field"},
"__EnumValue": {Model: "github.com/99designs/gqlgen/graphql/introspection.EnumValue"},
"__InputValue": {Model: "github.com/99designs/gqlgen/graphql/introspection.InputValue"},
"__Schema": {Model: "github.com/99designs/gqlgen/graphql/introspection.Schema"},
"Int": {Model: "github.com/99designs/gqlgen/graphql.Int"},
"Float": {Model: "github.com/99designs/gqlgen/graphql.Float"},
"String": {Model: "github.com/99designs/gqlgen/graphql.String"},
"Boolean": {Model: "github.com/99designs/gqlgen/graphql.Boolean"},
"ID": {Model: "github.com/99designs/gqlgen/graphql.ID"},
"Time": {Model: "github.com/99designs/gqlgen/graphql.Time"},
"Map": {Model: "github.com/99designs/gqlgen/graphql.Map"},
}
if cfg.Models == nil {
cfg.Models = TypeMap{}
}
for typeName, entry := range builtins {
if !cfg.Models.Exists(typeName) {
cfg.Models[typeName] = entry
}
}
var sources []*ast.Source
for _, filename := range cfg.SchemaFilename {
sources = append(sources, &ast.Source{Name: filename, Input: cfg.SchemaStr[filename]})
}
var err *gqlerror.Error
cfg.schema, err = gqlparser.LoadSchema(sources...)
if err != nil {
return err
}
return nil
}
var invalidPackageNameChar = regexp.MustCompile(`[^\w]`)
func sanitizePackageName(pkg string) string {
return invalidPackageNameChar.ReplaceAllLiteralString(filepath.Base(pkg), "_")
}
func abs(path string) string {
absPath, err := filepath.Abs(path)
if err != nil {
panic(err)
}
return filepath.ToSlash(absPath)
}
|
