feat: log files loaded from glob patterns (typeorm#4346)

This new feature logs the files that are loaded using the glob patterns to aid in debugging.

Closes: typeorm#4162

docs/troubleshooting.md

@@ -0,0 +1,16 @@
+# Troubleshooting
+
+* [Glob patterns](#glob-patterns)
+
+## Glob Patterns
+
+Glob patterns are used in the TypeOrm to specify the locations of entities, migrations, subscriber and other information. Errors in the patterns can lead to the common `RepositoryNotFoundError` and familiar errors. In order to check if any files were loaded by TypeOrm using the glob patterns, all you need to do is set the logging level to `info` such as explained in the [Logging](./logging.md) section of the documentation. This will allow you to have logs in the console that may look like this:
+
+```bash
+# in case of an error
+ INFO: No classes were found using the provided glob pattern:  "dist/**/*.entity{.ts}"
+```
+```bash
+# when files are found
+INFO: All classes found using provided glob pattern "dist/**/*.entity{.js,.ts}" : "dist/app/user/user.entity.js | dist/app/common/common.entity.js"
+```

docs/zh_CN/troubleshooting.md

@@ -0,0 +1,16 @@
+# 故障排除
+
+* [全球模式](#全球模式)
+
+## 全球模式
+
+在类型中使用全局模式来指定实体，迁移，订户和其他信息的位置。模式中的错误可能导致常见的`RepositoryNotFoundError`和熟悉的错误。为了检查TypeOrm是否使用glob模式加载了任何文件，您需要做的就是将日志级别设置为`info`，如文档的[Logging](./logging.md)部分所述。 这将允许您拥有可能如下所示的日志：
+
+```bash
+# 如果出错
+ INFO: No classes were found using the provided glob pattern:  "dist/**/*.entity{.ts}"
+```
+```bash
+# 何时找到文件
+INFO: All classes found using provided glob pattern "dist/**/*.entity{.js,.ts}" : "dist/app/user/user.entity.js | dist/app/common/common.entity.js"
+```

src/connection/ConnectionMetadataBuilder.ts

@@ -31,7 +31,7 @@ export class ConnectionMetadataBuilder {
      */
     buildMigrations(migrations: (Function|string)[]): MigrationInterface[] {
         const [migrationClasses, migrationDirectories] = OrmUtils.splitClassesAndStrings(migrations);
-        const allMigrationClasses = [...migrationClasses, ...importClassesFromDirectories(migrationDirectories)];
+        const allMigrationClasses = [...migrationClasses, ...importClassesFromDirectories(this.connection.logger, migrationDirectories)];
         return allMigrationClasses.map(migrationClass => getFromContainer<MigrationInterface>(migrationClass));
     }
 
@@ -40,7 +40,7 @@ export class ConnectionMetadataBuilder {
      */
     buildSubscribers(subscribers: (Function|string)[]): EntitySubscriberInterface<any>[] {
         const [subscriberClasses, subscriberDirectories] = OrmUtils.splitClassesAndStrings(subscribers || []);
-        const allSubscriberClasses = [...subscriberClasses, ...importClassesFromDirectories(subscriberDirectories)];
+        const allSubscriberClasses = [...subscriberClasses, ...importClassesFromDirectories(this.connection.logger, subscriberDirectories)];
         return getMetadataArgsStorage()
             .filterSubscribers(allSubscriberClasses)
             .map(metadata => getFromContainer<EntitySubscriberInterface<any>>(metadata.target));
@@ -56,7 +56,7 @@ export class ConnectionMetadataBuilder {
         const entityClasses: Function[] = entityClassesOrSchemas.filter(entityClass => (entityClass instanceof EntitySchema) === false) as any;
         const entitySchemas: EntitySchema<any>[] = entityClassesOrSchemas.filter(entityClass => entityClass instanceof EntitySchema) as any;
 
-        const allEntityClasses = [...entityClasses, ...importClassesFromDirectories(entityDirectories)];
+        const allEntityClasses = [...entityClasses, ...importClassesFromDirectories(this.connection.logger, entityDirectories)];
         allEntityClasses.forEach(entityClass => { // if we have entity schemas loaded from directories
             if (entityClass instanceof EntitySchema) {
                 entitySchemas.push(entityClass);

src/logger/AdvancedConsoleLogger.ts

@@ -74,11 +74,11 @@ export class AdvancedConsoleLogger implements Logger {
         switch (level) {
             case "log":
                 if (this.options === "all" || (this.options instanceof Array && this.options.indexOf("log") !== -1))
-                    console.log(message);
+                    PlatformTools.log(message);
                 break;
             case "info":
                 if (this.options === "all" || (this.options instanceof Array && this.options.indexOf("info") !== -1))
-                    console.info(message);
+                    PlatformTools.logInfo("INFO:", message);
                 break;
             case "warn":
                 if (this.options === "all" || (this.options instanceof Array && this.options.indexOf("warn") !== -1))

src/util/DirectoryExportedClassesLoader.ts

@@ -1,11 +1,14 @@
 import {PlatformTools} from "../platform/PlatformTools";
 import {EntitySchema} from "../index";
-
+import {Logger} from "../logger/Logger";
 /**
  * Loads all exported classes from the given directory.
  */
-export function importClassesFromDirectories(directories: string[], formats = [".js", ".ts"]): Function[] {
+export function importClassesFromDirectories(logger: Logger, directories: string[], formats = [".js", ".ts"]): Function[] {
 
+    const logLevel = "info";
+    const classesNotFoundMessage = "No classes were found using the provided glob pattern: ";
+    const classesFoundMessage = "All classes found using provided glob pattern";
     function loadFileClasses(exported: any, allLoaded: Function[]) {
         if (typeof exported === "function" || exported instanceof EntitySchema) {
             allLoaded.push(exported);
@@ -24,6 +27,11 @@ export function importClassesFromDirectories(directories: string[], formats = ["
         return allDirs.concat(PlatformTools.load("glob").sync(PlatformTools.pathNormalize(dir)));
     }, [] as string[]);
 
+    if (directories.length > 0 && allFiles.length === 0) {
+        logger.log(logLevel, `${classesNotFoundMessage} "${directories}"`);
+    } else if (allFiles.length > 0) {
+        logger.log(logLevel, `${classesFoundMessage} "${directories}" : "${allFiles}"`);
+    }
     const dirs = allFiles
         .filter(file => {
             const dtsExtension = file.substring(file.length - 5, file.length);