Split main file

Added code to split the generated main file into two separate files. This allows other code to launch the web application inline.

harness/build.go

@@ -36,7 +36,7 @@ func (c ByString) Less(i, j int) bool { return c[i].String() < c[j].String() }
 // 2. Run the appropriate "go build" command.
 // Requires that revel.Init has been called previously.
 // Returns the path to the built binary, and an error if there was a problem building it.
-func Build(c *model.CommandConfig, paths *model.RevelContainer, buildFlags ...string) (app *App, compileError *utils.Error) {
+func Build(c *model.CommandConfig, paths *model.RevelContainer) (app *App, compileError *utils.Error) {
 	// First, clear the generated files (to avoid them messing with ProcessSource).
 	cleanSource(paths, "tmp", "routes")
 
@@ -56,12 +56,20 @@ func Build(c *model.CommandConfig, paths *model.RevelContainer, buildFlags ...st
 
 	// Generate two source files.
 	templateArgs := map[string]interface{}{
+		"ImportPath":     paths.ImportPath,
 		"Controllers":    controllers,
 		"ValidationKeys": sourceInfo.ValidationKeys,
 		"ImportPaths":    calcImportAliases(sourceInfo),
 		"TestSuites":     sourceInfo.TestSuites(),
 	}
+
+	// Generate code for the main, run and routes file.
+	// The run file allows external programs to launch and run the application
+	// without being the main thread
+	cleanSource(paths, "tmp", "routes")
+
 	genSource(paths, "tmp", "main.go", RevelMainTemplate, templateArgs)
+	genSource(paths, filepath.Join("tmp", "run"), "run.go", RevelRunTemplate, templateArgs)
 	genSource(paths, "routes", "routes.go", RevelRoutesTemplate, templateArgs)
 
 	// Read build config.
@@ -126,14 +134,14 @@ func Build(c *model.CommandConfig, paths *model.RevelContainer, buildFlags ...st
 	}
 
 	gotten := make(map[string]struct{})
-	contains := func (s []string, e string) bool {
+	contains := func(s []string, e string) bool {
-				for _, a := range s {
+		for _, a := range s {
-					if a == e {
+			if a == e {
-					return true
+				return true
-				}
 			}
-		return false
 		}
+		return false
+	}
 
 	for {
 		appVersion := getAppVersion(paths)
@@ -144,7 +152,7 @@ func Build(c *model.CommandConfig, paths *model.RevelContainer, buildFlags ...st
 
 		// Append any build flags specified, they will override existing flags
 		flags := []string{}
-		if len(c.BuildFlags)==0 {
+		if len(c.BuildFlags) == 0 {
 			flags = []string{
 				"build",
 				"-i",
@@ -152,24 +160,23 @@ func Build(c *model.CommandConfig, paths *model.RevelContainer, buildFlags ...st
 				"-tags", buildTags,
 				"-o", binName}
 		} else {
-			if !contains(c.BuildFlags,"build") {
+			if !contains(c.BuildFlags, "build") {
 				flags = []string{"build"}
 			}
-			flags = append(flags,c.BuildFlags...)
+			flags = append(flags, c.BuildFlags...)
 			if !contains(flags, "-ldflags") {
-				flags = append(flags,"-ldflags", versionLinkerFlags)
+				flags = append(flags, "-ldflags", versionLinkerFlags)
 			}
 			if !contains(flags, "-tags") {
-				flags = append(flags,"-tags", buildTags)
+				flags = append(flags, "-tags", buildTags)
 			}
 			if !contains(flags, "-o") {
-				flags = append(flags,"-o", binName)
+				flags = append(flags, "-o", binName)
 			}
 		}
 
-
 		// Add in build flags
-		flags = append(flags, buildFlags...)
+		flags = append(flags, c.BuildFlags...)
 
 		// This is Go main path
 		gopath := c.GoPath
@@ -236,7 +243,7 @@ func Build(c *model.CommandConfig, paths *model.RevelContainer, buildFlags ...st
 			getOutput, err := getCmd.CombinedOutput()
 			if err != nil {
 				utils.Logger.Error("Build failed", "message", stOutput)
-				utils.Logger.Error("Failed to fetch the output", string(getOutput))
+				utils.Logger.Error("Failed to fetch the output", "getOutput", string(getOutput))
 				return nil, newCompileError(paths, output)
 			}
 		}
@@ -329,7 +336,6 @@ func cleanDir(paths *model.RevelContainer, dir string) {
 // genSource renders the given template to produce source code, which it writes
 // to the given directory and file.
 func genSource(paths *model.RevelContainer, dir, filename, templateSource string, args map[string]interface{}) {
-	cleanSource(paths, dir)
 
 	err := utils.MustGenerateTemplate(filepath.Join(paths.AppPath, dir, filename), templateSource, args)
 	if err != nil {
@@ -469,14 +475,13 @@ func newCompileError(paths *model.RevelContainer, output []byte) *utils.Error {
 }
 
 // RevelMainTemplate template for app/tmp/main.go
-const RevelMainTemplate = `// GENERATED CODE - DO NOT EDIT
+const RevelRunTemplate = `// GENERATED CODE - DO NOT EDIT
-// This file is the main file for Revel.
+// This file is the run file for Revel.
 // It registers all the controllers and provides details for the Revel server engine to
 // properly inject parameters directly into the action endpoints.
-package main
+package run
 
 import (
-	"flag"
 	"reflect"
 	"github.com/revel/revel"{{range $k, $v := $.ImportPaths}}
 	{{$v}} "{{$k}}"{{end}}
@@ -484,18 +489,18 @@ import (
 )
 
 var (
-	runMode    *string = flag.String("runMode", "", "Run mode.")
-	port       *int    = flag.Int("port", 0, "By default, read from app.conf")
-	importPath *string = flag.String("importPath", "", "Go Import Path for the app.")
-	srcPath    *string = flag.String("srcPath", "", "Path to the source root.")
-
 	// So compiler won't complain if the generated code doesn't reference reflect package...
 	_ = reflect.Invalid
 )
 
-func main() {
+// Register and run the application
-	flag.Parse()
+func Run(port int) {
-	revel.Init(*runMode, *importPath, *srcPath)
+	Register()
+	revel.Run(port)
+}
+
+// Register all the controllers
+func Register() {
 	revel.AppLog.Info("Running revel server")
 	{{range $i, $c := .Controllers}}
 	revel.RegisterController((*{{index $.ImportPaths .ImportPath}}.{{.StructName}})(nil),
@@ -522,8 +527,32 @@ func main() {
 	testing.TestSuites = []interface{}{ {{range .TestSuites}}
 		(*{{index $.ImportPaths .ImportPath}}.{{.StructName}})(nil),{{end}}
 	}
+}
+`
+const RevelMainTemplate = `// GENERATED CODE - DO NOT EDIT
+// This file is the main file for Revel.
+// It registers all the controllers and provides details for the Revel server engine to
+// properly inject parameters directly into the action endpoints.
+package main
 
-	revel.Run(*port)
+import (
+	"flag"
+	"{{.ImportPath}}/app/tmp/run"
+	"github.com/revel/revel"
+)
+
+var (
+	runMode    *string = flag.String("runMode", "", "Run mode.")
+	port       *int    = flag.Int("port", 0, "By default, read from app.conf")
+	importPath *string = flag.String("importPath", "", "Go Import Path for the app.")
+	srcPath    *string = flag.String("srcPath", "", "Path to the source root.")
+
+)
+
+func main() {
+	flag.Parse()
+	revel.Init(*runMode, *importPath, *srcPath)
+	run.Run(*port)
 }
 `
 

model/source_info.go

@@ -5,8 +5,8 @@ package model
 import (
 	"github.com/revel/cmd/utils"
 	"path/filepath"
-	"unicode"
 	"strings"
+	"unicode"
 )
 
 type SourceInfo struct {
@@ -41,9 +41,9 @@ func (s *SourceInfo) TypesThatEmbed(targetType, packageFilter string) (filtered
 		processed []string
 	)
 	for len(nodeQueue) > 0 {
-		controllerSimpleName := nodeQueue[0]
+		typeSimpleName := nodeQueue[0]
 		nodeQueue = nodeQueue[1:]
-		processed = append(processed, controllerSimpleName)
+		processed = append(processed, typeSimpleName)
 
 		// Look through all known structs.
 		for _, spec := range s.StructSpecs {
@@ -58,7 +58,7 @@ func (s *SourceInfo) TypesThatEmbed(targetType, packageFilter string) (filtered
 
 				// If so, add this type's simple name to the nodeQueue, and its spec to
 				// the filtered list.
-				if controllerSimpleName == embeddedType.String() {
+				if typeSimpleName == embeddedType.String() {
 					nodeQueue = append(nodeQueue, spec.String())
 					filtered = append(filtered, spec)
 					break
@@ -66,6 +66,7 @@ func (s *SourceInfo) TypesThatEmbed(targetType, packageFilter string) (filtered
 			}
 		}
 	}
+
 	// Strip out any specifications that contain a lower case
 	for exit := false; !exit; exit = true {
 		for i, filteredItem := range filtered {
@@ -84,25 +85,28 @@ func (s *SourceInfo) TypesThatEmbed(targetType, packageFilter string) (filtered
 	for _, spec := range s.StructSpecs {
 		if spec.PackageName == packageFilter {
 			found := false
+			unfoundNames := ""
 			for _, filteredItem := range filtered {
 				if filteredItem.StructName == spec.StructName {
 					found = true
 					break
+				} else {
+					unfoundNames += filteredItem.StructName + ","
 				}
 			}
 
 			// Report non controller structures in controller folder.
 			if !found && !strings.HasPrefix(spec.StructName, "Test") {
-				utils.Logger.Warn("Type found in package: " + packageFilter +
+				utils.Logger.Warn("Type found in package: "+packageFilter+
-					", but did not embed from: " + filepath.Base(targetType),
+					", but did not embed from: "+filepath.Base(targetType),
-					"name", spec.StructName, "path", spec.ImportPath)
+					"name", spec.StructName, "importpath", spec.ImportPath, "foundstructures", unfoundNames)
 			}
 		}
 	}
 	return
 }
 
-// ControllerSpecs returns the all the contollers that embeds
+// ControllerSpecs returns the all the controllers that embeds
 // `revel.Controller`
 func (s *SourceInfo) ControllerSpecs() []*TypeInfo {
 	if s.controllerSpecs == nil {

parser/reflect.go

@@ -94,12 +94,8 @@ func ProcessSource(paths *model.RevelContainer) (*model.SourceInfo, *utils.Error
 			// Skip "main" packages.
 			delete(pkgs, "main")
 
-			// If there is no code in this directory, skip it.
-			if len(pkgs) == 0 {
-				return nil
-			}
-
 			// Ignore packages that end with _test
+			// These cannot be included in source code that is not generated specifically as a test
 			for i := range pkgs {
 				if len(i) > 6 {
 					if string(i[len(i)-5:]) == "_test" {
@@ -108,6 +104,11 @@ func ProcessSource(paths *model.RevelContainer) (*model.SourceInfo, *utils.Error
 				}
 			}
 
+			// If there is no code in this directory, skip it.
+			if len(pkgs) == 0 {
+				return nil
+			}
+
 			// There should be only one package in this directory.
 			if len(pkgs) > 1 {
 				for i := range pkgs {
@@ -116,12 +117,17 @@ func ProcessSource(paths *model.RevelContainer) (*model.SourceInfo, *utils.Error
 				utils.Logger.Fatal("Most unexpected! Multiple packages in a single directory:", "packages", pkgs)
 			}
 
+
 			var pkg *ast.Package
 			for _, v := range pkgs {
 				pkg = v
 			}
 
-			srcInfo = appendSourceInfo(srcInfo, processPackage(fset, pkgImportPath, path, pkg))
+			if pkg != nil {
+				srcInfo = appendSourceInfo(srcInfo, processPackage(fset, pkgImportPath, path, pkg))
+			} else {
+				utils.Logger.Info("Ignoring package, because it contained no packages", "path", path)
+			}
 			return nil
 		})
 	}

revel/run.go

@@ -109,6 +109,7 @@ func runApp(c *model.CommandConfig) {
 	if c.Run.Mode == "" {
 		c.Run.Mode = "dev"
 	}
+	c.ImportPath = c.Run.ImportPath
 
 	revel_path := model.NewRevelPaths(c.Run.Mode, c.Run.ImportPath, "", model.DoNothingRevelCallback)
 	if c.Run.Port != "" {

revel/test.go

@@ -78,6 +78,7 @@ func testApp(c *model.CommandConfig) {
 	if c.Test.Mode != "" {
 		mode = c.Test.Mode
 	}
+	c.ImportPath = c.Test.ImportPath
 
 	// Find and parse app.conf
 	revel_path := model.NewRevelPaths(mode, c.Test.ImportPath, "", model.DoNothingRevelCallback)

utils/file.go

@@ -71,7 +71,7 @@ func MustGenerateTemplate(filename, templateSource string, args map[string]inter
 	sourceCode := b.String()
 	filePath := filepath.Dir(filename)
 	if !DirExists(filePath) {
-		err = os.Mkdir(filePath, 0777)
+		err = os.MkdirAll(filePath, 0777)
 		if err != nil && !os.IsExist(err) {
 			Logger.Fatal("Failed to make directory","dir", filePath, "error", err)
 		}