mirror of
https://github.com/kevin-DL/revel-cmd.git
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316 lines
11 KiB
Go
316 lines
11 KiB
Go
// This package will be shared between Revel and Revel CLI eventually
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package model
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import (
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"fmt"
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"path/filepath"
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"sort"
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"strings"
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"github.com/revel/cmd/utils"
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"github.com/revel/config"
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"golang.org/x/tools/go/packages"
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)
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// Error is used for constant errors.
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type Error string
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// Error implements the error interface.
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func (e Error) Error() string {
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return string(e)
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}
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const (
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ErrNoApp Error = "no app found at path"
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ErrNoConfig Error = "no config found at path"
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ErrNotFound Error = "not found"
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ErrMissingCert Error = "no http.sslcert provided"
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ErrMissingKey Error = "no http.sslkey provided"
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ErrNoFiles Error = "no files found in import path"
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ErrNoPackages Error = "no packages found for import"
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)
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type (
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// The container object for describing all Revels variables.
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RevelContainer struct {
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BuildPaths struct {
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Revel string
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}
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Paths struct {
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Import string
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Source string
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Base string
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App string
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Views string
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Code []string
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Template []string
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Config []string
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}
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PackageInfo struct {
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Config config.Context
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Packaged bool
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DevMode bool
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Vendor bool
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}
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Application struct {
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Name string
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Root string
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}
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ImportPath string // The import path
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SourcePath string // The full source path
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RunMode string // The current run mode
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RevelPath string // The path to the Revel source code
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BasePath string // The base path to the application
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AppPath string // The application path (BasePath + "/app")
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ViewsPath string // The application views path
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CodePaths []string // All the code paths
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TemplatePaths []string // All the template paths
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ConfPaths []string // All the configuration paths
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Config *config.Context // The global config object
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Packaged bool // True if packaged
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DevMode bool // True if running in dev mode
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HTTPPort int // The http port
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HTTPAddr string // The http address
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HTTPSsl bool // True if running https
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HTTPSslCert string // The SSL certificate
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HTTPSslKey string // The SSL key
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AppName string // The application name
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AppRoot string // The application root from the config `app.root`
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CookiePrefix string // The cookie prefix
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CookieDomain string // The cookie domain
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CookieSecure bool // True if cookie is secure
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SecretStr string // The secret string
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MimeConfig *config.Context // The mime configuration
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ModulePathMap map[string]*ModuleInfo // The module path map
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}
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ModuleInfo struct {
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ImportPath string
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Path string
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}
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WrappedRevelCallback struct {
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FireEventFunction func(key Event, value interface{}) (response EventResponse)
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ImportFunction func(pkgName string) error
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}
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)
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// Simple Wrapped RevelCallback.
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func NewWrappedRevelCallback(fe func(key Event, value interface{}) (response EventResponse), ie func(pkgName string) error) RevelCallback {
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return &WrappedRevelCallback{fe, ie}
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}
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// Function to implement the FireEvent.
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func (w *WrappedRevelCallback) FireEvent(key Event, value interface{}) (response EventResponse) {
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if w.FireEventFunction != nil {
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response = w.FireEventFunction(key, value)
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}
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return
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}
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func (w *WrappedRevelCallback) PackageResolver(pkgName string) error {
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return w.ImportFunction(pkgName)
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}
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// RevelImportPath Revel framework import path.
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var (
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RevelImportPath = "github.com/revel/revel"
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RevelModulesImportPath = "github.com/revel/modules"
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)
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// This function returns a container object describing the revel application
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// eventually this type of function will replace the global variables.
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func NewRevelPaths(mode, importPath, appSrcPath string, callback RevelCallback) (rp *RevelContainer, err error) {
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rp = &RevelContainer{ModulePathMap: map[string]*ModuleInfo{}}
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// Ignore trailing slashes.
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rp.ImportPath = strings.TrimRight(importPath, "/")
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rp.SourcePath = appSrcPath
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rp.RunMode = mode
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// We always need to determine the paths for files
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pathMap, err := utils.FindSrcPaths(appSrcPath, []string{importPath + "/app", RevelImportPath}, callback.PackageResolver)
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if err != nil {
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return
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}
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rp.AppPath, rp.RevelPath = pathMap[importPath], pathMap[RevelImportPath]
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// Setup paths for application
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rp.BasePath = rp.SourcePath
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rp.PackageInfo.Vendor = utils.Exists(filepath.Join(rp.BasePath, "go.mod"))
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rp.AppPath = filepath.Join(rp.BasePath, "app")
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// Sanity check , ensure app and conf paths exist
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if !utils.DirExists(rp.AppPath) {
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return rp, fmt.Errorf("%w: %s", ErrNoApp, rp.AppPath)
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}
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if !utils.DirExists(filepath.Join(rp.BasePath, "conf")) {
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return rp, fmt.Errorf("%w: %s", ErrNoConfig, filepath.Join(rp.BasePath, "conf"))
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}
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rp.ViewsPath = filepath.Join(rp.AppPath, "views")
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rp.CodePaths = []string{rp.AppPath}
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rp.TemplatePaths = []string{}
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if rp.ConfPaths == nil {
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rp.ConfPaths = []string{}
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}
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// Config load order
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// 1. framework (revel/conf/*)
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// 2. application (conf/*)
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// 3. user supplied configs (...) - User configs can override/add any from above
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rp.ConfPaths = append(
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[]string{
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filepath.Join(rp.RevelPath, "conf"),
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filepath.Join(rp.BasePath, "conf"),
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},
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rp.ConfPaths...)
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rp.Config, err = config.LoadContext("app.conf", rp.ConfPaths)
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if err != nil {
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return rp, fmt.Errorf("unable to load configuration file %w", err)
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}
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// Ensure that the selected runmode appears in app.conf.
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// If empty string is passed as the mode, treat it as "DEFAULT"
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if mode == "" {
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mode = config.DefaultSection
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}
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if !rp.Config.HasSection(mode) {
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return rp, fmt.Errorf("app.conf: %w %s %s", ErrNotFound, "run-mode", mode)
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}
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rp.Config.SetSection(mode)
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// Configure properties from app.conf
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rp.DevMode = rp.Config.BoolDefault("mode.dev", false)
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rp.HTTPPort = rp.Config.IntDefault("http.port", 9000)
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rp.HTTPAddr = rp.Config.StringDefault("http.addr", "")
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rp.HTTPSsl = rp.Config.BoolDefault("http.ssl", false)
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rp.HTTPSslCert = rp.Config.StringDefault("http.sslcert", "")
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rp.HTTPSslKey = rp.Config.StringDefault("http.sslkey", "")
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if rp.HTTPSsl {
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if rp.HTTPSslCert == "" {
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return rp, ErrMissingCert
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}
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if rp.HTTPSslKey == "" {
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return rp, ErrMissingKey
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}
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}
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rp.AppName = rp.Config.StringDefault("app.name", "(not set)")
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rp.AppRoot = rp.Config.StringDefault("app.root", "")
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rp.CookiePrefix = rp.Config.StringDefault("cookie.prefix", "REVEL")
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rp.CookieDomain = rp.Config.StringDefault("cookie.domain", "")
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rp.CookieSecure = rp.Config.BoolDefault("cookie.secure", rp.HTTPSsl)
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rp.SecretStr = rp.Config.StringDefault("app.secret", "")
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callback.FireEvent(REVEL_BEFORE_MODULES_LOADED, nil)
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utils.Logger.Info("Loading modules")
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if err := rp.loadModules(callback); err != nil {
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return rp, err
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}
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callback.FireEvent(REVEL_AFTER_MODULES_LOADED, nil)
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return
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}
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// LoadMimeConfig load mime-types.conf on init.
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func (rp *RevelContainer) LoadMimeConfig() (err error) {
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rp.MimeConfig, err = config.LoadContext("mime-types.conf", rp.ConfPaths)
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if err != nil {
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return fmt.Errorf("failed to load mime type config: %s %w", "error", err)
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}
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return
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}
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// Loads modules based on the configuration setup.
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// This will fire the REVEL_BEFORE_MODULE_LOADED, REVEL_AFTER_MODULE_LOADED
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// for each module loaded. The callback will receive the RevelContainer, name, moduleImportPath and modulePath
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// It will automatically add in the code paths for the module to the
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// container object.
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func (rp *RevelContainer) loadModules(callback RevelCallback) (err error) {
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keys := []string{}
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keys = append(keys, rp.Config.Options("module.")...)
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// Reorder module order by key name, a poor mans sort but at least it is consistent
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sort.Strings(keys)
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for _, key := range keys {
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moduleImportPath := rp.Config.StringDefault(key, "")
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if moduleImportPath == "" {
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continue
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}
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modulePath, err := rp.ResolveImportPath(moduleImportPath)
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if err != nil {
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utils.Logger.Info("Missing module ", "module_import_path", moduleImportPath, "error", err)
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if err := callback.PackageResolver(moduleImportPath); err != nil {
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return fmt.Errorf("failed to resolve package %w", err)
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}
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modulePath, err = rp.ResolveImportPath(moduleImportPath)
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if err != nil {
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return fmt.Errorf("failed to load module. Import of path failed %s:%s %s:%w ", "modulePath", moduleImportPath, "error", err)
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}
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}
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// Drop anything between module.???.<name of module>
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name := key[len("module."):]
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if index := strings.Index(name, "."); index > -1 {
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name = name[index+1:]
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}
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callback.FireEvent(REVEL_BEFORE_MODULE_LOADED, []interface{}{rp, name, moduleImportPath, modulePath})
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rp.addModulePaths(name, moduleImportPath, modulePath)
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callback.FireEvent(REVEL_AFTER_MODULE_LOADED, []interface{}{rp, name, moduleImportPath, modulePath})
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}
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return
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}
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// Adds a module paths to the container object.
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func (rp *RevelContainer) addModulePaths(name, importPath, modulePath string) {
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utils.Logger.Info("Adding module path", "name", name, "import path", importPath, "system path", modulePath)
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if codePath := filepath.Join(modulePath, "app"); utils.DirExists(codePath) {
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rp.CodePaths = append(rp.CodePaths, codePath)
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rp.ModulePathMap[name] = &ModuleInfo{importPath, modulePath}
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if viewsPath := filepath.Join(modulePath, "app", "views"); utils.DirExists(viewsPath) {
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rp.TemplatePaths = append(rp.TemplatePaths, viewsPath)
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}
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}
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// Hack: There is presently no way for the testrunner module to add the
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// "test" subdirectory to the CodePaths. So this does it instead.
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if importPath == rp.Config.StringDefault("module.testrunner", "github.com/revel/modules/testrunner") {
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joinedPath := filepath.Join(rp.BasePath, "tests")
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rp.CodePaths = append(rp.CodePaths, joinedPath)
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}
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if testsPath := filepath.Join(modulePath, "tests"); utils.DirExists(testsPath) {
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rp.CodePaths = append(rp.CodePaths, testsPath)
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}
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}
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// ResolveImportPath returns the filesystem path for the given import path.
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// Returns an error if the import path could not be found.
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func (rp *RevelContainer) ResolveImportPath(importPath string) (string, error) {
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if rp.Packaged {
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return filepath.Join(rp.SourcePath, importPath), nil
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}
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config := &packages.Config{
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Mode: packages.NeedName | packages.NeedFiles | packages.NeedCompiledGoFiles | packages.NeedImports |
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packages.NeedTypes | packages.NeedTypesSizes | packages.NeedSyntax | packages.NeedTypesInfo,
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Dir: rp.AppPath,
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}
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config.Env = utils.ReducedEnv(false)
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pkgs, err := packages.Load(config, importPath)
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if len(pkgs) == 0 {
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return "", fmt.Errorf("%w %s using app path %s", ErrNoPackages, importPath, rp.AppPath)
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}
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// modPkg, err := build.Import(importPath, rp.AppPath, build.FindOnly)
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if err != nil {
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return "", err
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}
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if len(pkgs[0].GoFiles) > 0 {
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return filepath.Dir(pkgs[0].GoFiles[0]), nil
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}
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return pkgs[0].PkgPath, fmt.Errorf("%w: %s", ErrNoFiles, importPath)
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}
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