{"id":122911,"date":"2024-03-24T09:01:39","date_gmt":"2024-03-24T00:01:39","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/go%e8%a8%80%e8%aa%9e%e3%81%a7%e4%b8%a6%e8%a1%8c%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%90%e3%83%83%e3%82%af%e3%82%a2%e3%83%83%e3%83%97%e5%95%8f%e9%a1%8c%e3%82%92%e8%a7%a3%e6%b1%ba%e3%81%99%e3%82%8b\/"},"modified":"2024-04-04T06:41:19","modified_gmt":"2024-04-03T21:41:19","slug":"go%e8%a8%80%e8%aa%9e%e3%81%a7%e4%b8%a6%e8%a1%8c%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%90%e3%83%83%e3%82%af%e3%82%a2%e3%83%83%e3%83%97%e5%95%8f%e9%a1%8c%e3%82%92%e8%a7%a3%e6%b1%ba%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/go%e8%a8%80%e8%aa%9e%e3%81%a7%e4%b8%a6%e8%a1%8c%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%90%e3%83%83%e3%82%af%e3%82%a2%e3%83%83%e3%83%97%e5%95%8f%e9%a1%8c%e3%82%92%e8%a7%a3%e6%b1%ba%e3%81%99%e3%82%8b\/","title":{"rendered":"Go\u8a00\u8a9e\u3067\u4e26\u884c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>Go\u8a00\u8a9e\u3067\u4e26\u5217\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u30b4\u30eb\u30fc\u30c1\u30f3\u3068\u30c1\u30e3\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">package<\/span> main\r\n<span class=\"hljs-keyword\">import<\/span> (\r\n<span class=\"hljs-string\">\"io\"<\/span>\r\n<span class=\"hljs-string\">\"log\"<\/span>\r\n<span class=\"hljs-string\">\"os\"<\/span>\r\n<span class=\"hljs-string\">\"path\/filepath\"<\/span>\r\n<span class=\"hljs-string\">\"sync\"<\/span>\r\n)\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\nsourceDir := <span class=\"hljs-string\">\".\/source\"<\/span>       <span class=\"hljs-comment\">\/\/ \u6e90\u6587\u4ef6\u76ee\u5f55<\/span>\r\nbackupDir := <span class=\"hljs-string\">\".\/backup\"<\/span>       <span class=\"hljs-comment\">\/\/ \u5907\u4efd\u76ee\u5f55<\/span>\r\nconcurrent := <span class=\"hljs-number\">5<\/span>               <span class=\"hljs-comment\">\/\/ \u5e76\u53d1\u6570<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u5907\u4efd\u76ee\u5f55<\/span>\r\nerr := os.MkdirAll(backupDir, os.ModePerm)\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\nlog.Fatal(err)\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u6e90\u6587\u4ef6\u5217\u8868<\/span>\r\nfileList, err := getFileList(sourceDir)\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\nlog.Fatal(err)\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u5e76\u53d1\u63a7\u5236\u901a\u9053<\/span>\r\nsemaphore := <span class=\"hljs-built_in\">make<\/span>(<span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{}, concurrent)\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u7b49\u5f85\u7ec4<\/span>\r\n<span class=\"hljs-keyword\">var<\/span> wg sync.WaitGroup\r\n<span class=\"hljs-comment\">\/\/ \u5907\u4efd\u6587\u4ef6<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> _, file := <span class=\"hljs-keyword\">range<\/span> fileList {\r\nwg.Add(<span class=\"hljs-number\">1<\/span>)\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">(file <span class=\"hljs-type\">string<\/span>)<\/span><\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u9650\u5236\u5e76\u53d1\u6570<\/span>\r\nsemaphore &lt;- <span class=\"hljs-keyword\">struct<\/span>{}{}\r\n<span class=\"hljs-keyword\">defer<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n&lt;-semaphore\r\nwg.Done()\r\n}()\r\n<span class=\"hljs-comment\">\/\/ \u6253\u5f00\u6e90\u6587\u4ef6<\/span>\r\nsourceFile, err := os.Open(filepath.Join(sourceDir, file))\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\nlog.Println(err)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-keyword\">defer<\/span> sourceFile.Close()\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efa\u76ee\u6807\u6587\u4ef6<\/span>\r\ndestFile, err := os.Create(filepath.Join(backupDir, file))\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\nlog.Println(err)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\n<span class=\"hljs-keyword\">defer<\/span> destFile.Close()\r\n<span class=\"hljs-comment\">\/\/ \u590d\u5236\u6587\u4ef6\u5185\u5bb9<\/span>\r\n_, err = io.Copy(destFile, sourceFile)\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\nlog.Println(err)\r\n<span class=\"hljs-keyword\">return<\/span>\r\n}\r\nlog.Println(<span class=\"hljs-string\">\"\u5907\u4efd\u6587\u4ef6\u5b8c\u6210:\"<\/span>, file)\r\n}(file)\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u7b49\u5f85\u6240\u6709\u534f\u7a0b\u5b8c\u6210<\/span>\r\nwg.Wait()\r\nlog.Println(<span class=\"hljs-string\">\"\u5907\u4efd\u5b8c\u6210\"<\/span>)\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u5217\u8868<\/span>\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">getFileList<\/span><span class=\"hljs-params\">(dir <span class=\"hljs-type\">string<\/span>)<\/span><\/span> ([]<span class=\"hljs-type\">string<\/span>, <span class=\"hljs-type\">error<\/span>) {\r\nfileList := []<span class=\"hljs-type\">string<\/span>{}\r\nerr := filepath.Walk(dir, <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">(path <span class=\"hljs-type\">string<\/span>, info os.FileInfo, err <span class=\"hljs-type\">error<\/span>)<\/span><\/span> <span class=\"hljs-type\">error<\/span> {\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n<span class=\"hljs-keyword\">return<\/span> err\r\n}\r\n<span class=\"hljs-keyword\">if<\/span> !info.IsDir() {\r\nrelPath, err := filepath.Rel(dir, path)\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n<span class=\"hljs-keyword\">return<\/span> err\r\n}\r\nfileList = <span class=\"hljs-built_in\">append<\/span>(fileList, relPath)\r\n}\r\n<span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">nil<\/span>\r\n})\r\n<span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n<span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">nil<\/span>, err\r\n}\r\n<span class=\"hljs-keyword\">return<\/span> fileList, <span class=\"hljs-literal\">nil<\/span>\r\n}\r\n<\/code><\/pre>\n<p>\u30b3\u30eb\u30fc\u30c1\u30f3\u3068\u30c1\u30e3\u30cd\u30eb\u3092\u5229\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u4e26\u5217\u306b\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002\u306f\u3058\u3081\u306b\u3001\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30b3\u30eb\u30fc\u30c1\u30f3\u3092\u4f7f\u3063\u3066\u5404\u30d5\u30a1\u30a4\u30eb\u3092\u4e26\u884c\u3057\u3066\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u307e\u3059\u304c\u3001\u30c1\u30e3\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u3066\u540c\u6642\u5b9f\u884c\u6570\u3092\u5236\u9650\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u5f85\u6a5f\u30b0\u30eb\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u3066\u3059\u3079\u3066\u306e\u4e26\u884c\u5b9f\u884c\u304c\u5b8c\u4e86\u3059\u308b\u306e\u3092\u5f85\u3061\u307e\u3059\u3002<\/p>\n<p>\u8907\u6570\u306egoroutine\u304c\u540c\u6642\u306b\u540c\u3058\u30d5\u30a1\u30a4\u30eb\u306b\u64cd\u4f5c\u3057\u306a\u3044\u3088\u3046\u3001\u4e26\u5217\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30d5\u30a1\u30a4\u30eb\u306e\u969b\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3002\u4e0a\u63b2\u30b3\u30fc\u30c9\u3067\u306f\u3001\u5404goroutine\u306f\u72ec\u81ea\u306e\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u3068\u30bf\u30fc\u30b2\u30c3\u30c8\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u3001\u4e26\u5217\u5b89\u5168\u554f\u984c\u3092\u56de\u907f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go\u8a00\u8a9e\u3067\u4e26\u5217\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u30b4\u30eb\u30fc\u30c1\u30f3\u3068\u30c1\u30e3\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002 package main import ( &#8220;io&#8221; &#8220;log&#8221; &#8220;os&#8221; &#8220;path\/file [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-122911","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Go\u8a00\u8a9e\u3067\u4e26\u884c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/go\u8a00\u8a9e\u3067\u4e26\u884c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Go\u8a00\u8a9e\u3067\u4e26\u884c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Go\u8a00\u8a9e\u3067\u4e26\u5217\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u30b4\u30eb\u30fc\u30c1\u30f3\u3068\u30c1\u30e3\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002 package main import ( &quot;io&quot; &quot;log&quot; &quot;os&quot; &quot;path\/file [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/go\u8a00\u8a9e\u3067\u4e26\u884c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-24T00:01:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-03T21:41:19+00:00\" \/>\n<meta name=\"author\" content=\"\u590f\u6a39, \u98a8\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u590f\u6a39, \u98a8\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/go%e8%a8%80%e8%aa%9e%e3%81%a7%e4%b8%a6%e8%a1%8c%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%90%e3%83%83%e3%82%af%e3%82%a2%e3%83%83%e3%83%97%e5%95%8f%e9%a1%8c%e3%82%92%e8%a7%a3%e6%b1%ba%e3%81%99%e3%82%8b\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/go%e8%a8%80%e8%aa%9e%e3%81%a7%e4%b8%a6%e8%a1%8c%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%90%e3%83%83%e3%82%af%e3%82%a2%e3%83%83%e3%83%97%e5%95%8f%e9%a1%8c%e3%82%92%e8%a7%a3%e6%b1%ba%e3%81%99%e3%82%8b\/\",\"name\":\"Go\u8a00\u8a9e\u3067\u4e26\u884c\u30d5\u30a1\u30a4\u30eb\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5 - Blog - Silicon 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