{"id":328746,"date":"2022-01-28T15:01:58","date_gmt":"2022-01-28T15:01:58","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=328746"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=328746","title":{"rendered":"<span>\u0414\u0430 \u0447\u0442\u043e \u044d\u0442\u043e \u0442\u0430\u043a\u043e\u0435, \u0432\u0430\u0448\u0435 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u043a\u043e\u0434\u0430?<\/span>"},"content":{"rendered":"<div><\/div>\n<div id=\"post-content-body\">\n<div>\n<div class=\"article-formatted-body article-formatted-body_version-2\">\n<div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">\n<blockquote>\n<p><em>\u041b\u0443\u0447\u0448\u0438\u0439 \u043a\u043e\u0434 \u2014 \u044d\u0442\u043e \u043d\u0435\u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0439 \u043a\u043e\u0434<\/em><\/p>\n<\/blockquote>\n<p>\u0421\u0430\u043b\u044e\u0442, \u043a\u043e\u043b\u043b\u0435\u0433\u0438.<\/p>\n<p>\u041b\u0438\u0447\u043d\u043e \u044f, \u043e\u0447\u0435\u043d\u044c \u043b\u044e\u0431\u043b\u044e \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043f\u0440\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0441\u0442\u044c \u0438 \u0432\u044b\u0440\u0430\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430 (\u044d\u0442\u0438 \u0443\u043c\u043d\u044b\u0435 \u0441\u043b\u043e\u0432\u0430, \u0447\u0430\u0441\u0442\u043e \u0437\u0432\u0443\u0447\u0430\u0442 \u043d\u0430 \u043a\u043e\u0434 \u0440\u0435\u0432\u044c\u044e)<\/p>\n<p>\u041a \u0441\u043e\u0436\u0430\u043b\u0435\u043d\u0438\u044e, \u0442\u0430\u043a\u0438\u0435 \u0440\u0430\u0437\u0433\u043e\u0432\u043e\u0440\u044b \u0447\u0430\u0441\u0442\u043e \u0438 \u0431\u044b\u0441\u0442\u0440\u043e \u0441\u043a\u0430\u0442\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u0445\u043e\u043b\u0438\u0432\u0430\u0440. \u041d\u043e, \u043a\u0430\u0436\u0435\u0442\u0441\u044f, \u044f \u043d\u0430\u0448\u0435\u043b \u0441\u043f\u043e\u0441\u043e\u0431 &#171;\u0432\u0435\u0441\u0442\u0438 \u0440\u0430\u0437\u0433\u043e\u0432\u043e\u0440\u044b \u043e \u0432\u044b\u0441\u043e\u043a\u043e\u043c \u0431\u0435\u0437 \u0431\u043e\u043b\u0438&#187;. <\/p>\n<p>\u041c\u044b\u0441\u043b\u044c \u0442\u0430\u043a\u0430\u044f, \u0435\u0441\u043b\u0438 \u043f\u0440\u0438\u0437\u0435\u043c\u043b\u0438\u0442\u044c \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u0443\u044e \u043f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u0437\u0430\u0434\u0430\u0447\u0443, \u0442\u043e \u0431\u0443\u0434\u0435\u0442 \u0441\u0438\u043b\u044c\u043d\u043e \u043f\u0440\u043e\u0449\u0435 \u043f\u043e\u043d\u044f\u0442\u044c, \u043a\u0430\u043a\u043e\u0439 \u0438\u043c\u0435\u043d\u043d\u043e \u0441\u043c\u044b\u0441\u043b \u0432\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u0442 \u0432 \u0441\u043b\u043e\u0432\u043e &#171;\u0432\u044b\u0440\u0430\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c&#187; \u0441\u043e\u0431\u0435\u0441\u0435\u0434\u043d\u0438\u043a.\u00a0<\/p>\n<h3>\u0417\u0430\u0434\u0430\u0447\u0430<\/h3>\n<p>\u041c\u044b \u0434\u0435\u043b\u0430\u0435\u043c\u00a0<a href=\"https:\/\/developer.atlassian.com\/cloud\/confluence\/getting-started-with-connect\/\" rel=\"noopener noreferrer nofollow\">\u0430\u0434\u0434\u043e\u043d \u0434\u043b\u044f Confluence Cloud<\/a>\u00a0\u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435\u00a0<a href=\"https:\/\/www.playframework.com\/\" rel=\"noopener noreferrer nofollow\">Play Framework<\/a>. \u0421\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u0447\u0435\u043c-\u0442\u043e \u0442\u0430\u043a\u0438\u043c \u044f \u043a\u0430\u0436\u0434\u044b\u0439 \u0434\u0435\u043d\u044c \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0441\u044c \u0432 Stiltsoft.<\/p>\n<p>\u0412\u043d\u0443\u0442\u0440\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0443 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0434\u0435\u0441\u044f\u0442\u043a\u043e\u0432 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432.<\/p>\n<pre><code class=\"java\">public class FeaturePageController extends Controller {       public CompletionStage&lt;Result> someAction1(Page page, Account account) {         return completedFuture(ok());     }       public CompletionStage&lt;Result> someAction2(Page page, Account account) {         return completedFuture(ok());     }       public CompletionStage&lt;Result> someAction3(Page page, Account account) {         return completedFuture(ok());     } }<\/code><\/pre>\n<p><strong><em>Page<\/em><\/strong>\u00a0&#8212; \u044d\u0442\u043e \u043a\u0430\u043a\u0430\u044f-\u0442\u043e \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430 \u0432 Confluence<\/p>\n<p><strong><em>Account<\/em><\/strong>\u00a0&#8212; \u044d\u0442\u043e \u043a\u0430\u043a\u043e\u0439-\u0442\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0432 Confluence<\/p>\n<p>\u041f\u0440\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0438 \u043a \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0443 (\u0432\u044b\u0437\u043e\u0432 \u043b\u044e\u0431\u043e\u0433\u043e \u0438\u0437 \u0435\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u043e\u0432) \u043d\u0430\u0434\u043e \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c, \u0438\u043c\u0435\u0435\u0442 \u043b\u0438 \u043f\u0440\u0430\u0432\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c <em>account<\/em> \u0432 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0435 \u0432\u0438\u0434\u0435\u0442\u044c \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0443 <em>page<\/em>.\u00a0<\/p>\n<p>\u0421\u0435\u0440\u0432\u0438\u0441, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443, \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a<\/p>\n<pre><code class=\"java\">public interface PermissionService {       CompletionStage&lt;Boolean> canViewPage(ACHost acHost, Account account, Page page);   }<\/code><\/pre>\n<p><strong><em>ACHost<\/em><\/strong>\u00a0&#8212; \u044d\u0442\u043e \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u044b\u0439 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440 Confluence, c \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0430\u0448 \u0441\u0435\u0440\u0432\u0438\u0441 (\u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043e\u0442 Atlassian Connect Host)<\/p>\n<p>\u0421\u0430\u043c\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0434\u043b\u044f\u00a0<em>canViewPage<\/em>\u00a0\u043c\u043e\u0436\u043d\u043e \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u0438\u0437 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 \u043c\u0435\u0442\u043e\u0434\u0430\u043c\u0438<\/p>\n<ul>\n<li>\n<p>Optional&lt;ACHost> getAcHost(Request request)<\/p>\n<\/li>\n<li>\n<p>Optional&lt;Account> getAccount(Request request)<\/p>\n<\/li>\n<li>\n<p>Optional&lt;Page> getPage(Request request)\u00a0<\/p>\n<\/li>\n<\/ul>\n<p>\u041d\u0430\u0434\u043e\u00a0<a href=\"https:\/\/www.playframework.com\/documentation\/2.8.x\/JavaActionsComposition\" rel=\"noopener noreferrer nofollow\">\u0438\u043d\u0442\u0435\u0433\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c PermissionService \u0432 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 Play Framework<\/a>, \u0447\u0442\u043e\u0431\u044b \u043d\u0435 \u0432\u044b\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0440\u0443\u043a\u0430\u043c\u0438 \u043a\u0430\u0436\u0434\u044b\u0439 \u0440\u0430\u0437, \u0430 \u043f\u0440\u043e\u0441\u0442\u043e \u0432\u0435\u0448\u0430\u0442\u044c \u0430\u043d\u043d\u043e\u0442\u0430\u0446\u0438\u044e \u043d\u0430 \u043d\u0443\u0436\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440.<\/p>\n<p><a href=\"https:\/\/github.com\/yorlov\/code-discussion\" rel=\"noopener noreferrer nofollow\">\u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0439 \u043a\u043e\u0434 \u0434\u043b\u044f \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c\/\u043f\u043e\u043a\u0440\u0443\u0442\u0438\u0442\u044c \u0432 IDE<\/a><\/p>\n<p>\u0421\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u044f \u0432\u0438\u0436\u0443, \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c, \u043f\u044f\u0442\u044c \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u0432 \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u0447\u0438. \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u043e\u0431\u0441\u0443\u0434\u0438\u043c \u0438\u0445 \u0432 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f\u0445 \ud83d\ude42<\/p>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0435\u0440\u0432\u044b\u0439. \u041f\u0440\u043e\u0441\u0442\u043e\u0439, \u043d\u043e \u0441\u0443\u0440\u043e\u0432\u044b\u0439<\/h3>\n<p>\u0420\u0435\u0448\u0430\u0435\u043c \u0437\u0430\u0434\u0430\u0447\u0443 \u0432 \u043b\u043e\u0431.<\/p>\n<pre><code class=\"java\">public class ActionV1 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV1(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         Optional&lt;ACHost> acHostOpt = getAcHost(request);         Optional&lt;Account> accountOpt = getAccount(request);         Optional&lt;Page> pageOpt = getPage(request);           if (acHostOpt.isPresent() &amp;&amp; accountOpt.isPresent() &amp;&amp; pageOpt.isPresent()) {             return permissionService.canViewPage(acHostOpt.get(), accountOpt.get(), pageOpt.get()).thenComposeAsync(canView -> {                 if (canView) {                     return delegate.call(request);                 } else {                     return completedFuture(forbidden());                 }             });         } else {             return completedFuture(unauthorized());         }     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043d\u044f\u0442\u044c \u043a\u043e\u0434, \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0437\u043d\u0430\u0442\u044c \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 java 8<\/p>\n<\/li>\n<li>\n<p>\u043f\u0440\u044f\u043c\u043e\u043b\u0438\u043d\u0435\u0439\u043d\u044b\u0439 \u043a\u043e\u0434: \u0432\u0437\u044f\u043b\u0438, \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u043b\u0438, \u0432\u044b\u0437\u0432\u0430\u043b\u0438<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0442\u0440\u0438 \u0443\u0440\u043e\u0432\u043d\u044f \u0432\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0441\u0442\u0438, \u0434\u0432\u0430 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f<\/p>\n<\/li>\n<li>\n<p>\u0432\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u043e \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 \u043c\u043d\u043e\u0433\u043e \u043c\u0435\u0441\u0442\u0430, \u0445\u043e\u0442\u044f \u043d\u0438\u0447\u0435\u0433\u043e \u0441\u043b\u043e\u0436\u043d\u043e\u0433\u043e \u043d\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442<\/p>\n<\/li>\n<li>\n<p>\u043d\u0435 \u0438\u0434\u0438\u043e\u043c\u0430\u0442\u0438\u0447\u043d\u043e\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u00a0<em>Optional<\/em><\/p>\n<\/li>\n<\/ul>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0432\u0442\u043e\u0440\u043e\u0439. \u0418\u0434\u0438\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439<\/h3>\n<p>\u0411\u0435\u0440\u0435\u043c \u0432 \u0440\u0443\u043a\u0438\u00a0<em>Optional\u00a0<\/em>\u0438 \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u043c &#171;\u0444\u043b\u044d\u0442\u043c\u0430\u043f\u0430\u0442\u044c&#187; \u043d\u0430 \u0432\u0441\u0435 \u0434\u0435\u043d\u044c\u0433\u0438<\/p>\n<pre><code class=\"java\">public class ActionV2 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV2(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         return getAcHost(request).flatMap(acHost ->                 getAccount(request).flatMap(account ->                         getPage(request).map(page ->                                 permissionService.canViewPage(acHost, account, page))))                 .map(permission -> permission.thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden())))                 .orElse(completedFuture(unauthorized()));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043c\u0438\u043d\u0438\u043c\u0443\u043c \u043a\u043e\u0434\u0430<\/p>\n<\/li>\n<li>\n<p>\u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434, \u0432\u0441\u0435\u0433\u043e \u043e\u0434\u043d\u043e \u044f\u0432\u043d\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435<\/p>\n<\/li>\n<li>\n<p>\u043b\u0435\u043d\u0438\u0432\u043e\u0441\u0442\u044c, \u0435\u0441\u043b\u0438 \u043a\u0430\u043a\u043e\u0435-\u0442\u043e \u0438\u0437 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043d\u0435 \u0431\u0443\u0434\u0435\u0442 \u043d\u0430\u0439\u0434\u0435\u043d\u043e, \u043f\u043e\u0438\u0441\u043a \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0433\u043e \u0434\u0430\u0436\u0435 \u043d\u0435 \u043d\u0430\u0447\u043d\u0435\u0442\u0441\u044f<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p><a href=\"http:\/\/callbackhell.com\/\" rel=\"noopener noreferrer nofollow\">callback hell<\/a><\/p>\n<\/li>\n<\/ul>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0442\u0440\u0435\u0442\u0438\u0439. \u0425\u0438\u043f\u0441\u0442\u0435\u0440\u0441\u043a\u0438\u0439<\/h3>\n<p>\u0412\u043e\u043e\u0440\u0443\u0436\u0430\u0435\u043c\u0441\u044f \u0442\u0435\u0440\u043c\u0438\u043d\u043e\u043b\u043e\u0433\u0438\u0435\u0439 \u0432 \u0441\u0442\u0438\u043b\u0435 &#171;\u043c\u043e\u043d\u043e\u0438\u0434 \u0432 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438 \u044d\u043d\u0434\u043e\u0444\u0443\u043d\u043a\u0442\u043e\u0440\u043e\u0432&#187; \u0438 \u043f\u0438\u0448\u0435\u043c<\/p>\n<pre><code class=\"java\">public class ActionV3 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV3(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         Function3&lt;ACHost, Account, Page, CompletionStage&lt;Boolean>> canViewPage = permissionService::canViewPage;           return Optional.of(canViewPage.curried())                 .flatMap(acHostFn -> getAcHost(request).map(acHostFn))                 .flatMap(accountFn -> getAccount(request).map(accountFn))                 .flatMap(pageFn -> getPage(request).map(pageFn))                 .map(permission -> permission.thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden())))                 .orElse(completedFuture(unauthorized()));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u0430\u0439\u043f\u043b\u0430\u0439\u043d<\/p>\n<\/li>\n<li>\n<p>\u043b\u0435\u043d\u0438\u0432\u043e\u0441\u0442\u044c<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043d\u044f\u0442\u044c \u043a\u043e\u0434, \u043d\u0430\u0434\u043e \u0431\u044b\u0442\u044c \u0437\u043d\u0430\u043a\u043e\u043c\u044b\u043c \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u043c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c<\/p>\n<ul>\n<li>\n<p>\u0432 \u0447\u0430\u0441\u0442\u043d\u043e\u0441\u0442\u0438, \u043f\u043e\u043d\u0430\u0434\u043e\u0431\u0438\u0442\u0441\u044f \u043f\u043e\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043a\u043e\u043d\u0446\u0435\u043f\u0442\u043e\u0432:\u00a0<a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9A%D0%B0%D1%80%D1%80%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5\" rel=\"noopener noreferrer nofollow\">\u043a\u0430\u0440\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f<\/a>,\u00a0<a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A7%D0%B0%D1%81%D1%82%D0%B8%D1%87%D0%BD%D0%BE%D0%B5_%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5\" rel=\"noopener noreferrer nofollow\">\u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u00a0<\/a><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/javadoc.io\/doc\/io.vavr\/vavr\/0.9.2\/io\/vavr\/Function3.html\" rel=\"noopener noreferrer nofollow\">Function3<\/a>\u00a0\u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u043c\u0435\u0442\u043e\u0434\u043e\u043c\u00a0<em>curried\u00a0<\/em>\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430\u00a0<a href=\"https:\/\/www.vavr.io\/\" rel=\"noopener noreferrer nofollow\">Vavr<\/a><\/p>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u044b\u0439. \u0410\u043a\u0446\u0435\u043d\u0442\u044b \u043d\u0430 \u0433\u043b\u0430\u0432\u043d\u043e\u043c<\/h3>\n<p>\u041a\u043e\u0434 \u043f\u0438\u0448\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043b\u044e\u0434\u0435\u0439 \u0438 \u0435\u0441\u0442\u044c \u0432\u0435\u0440\u043e\u044f\u0442\u043d\u043e\u0441\u0442\u044c, \u0447\u0442\u043e \u043f\u043e\u0442\u043e\u043c \u0435\u0433\u043e \u0431\u0443\u0434\u0443\u0442 \u0447\u0438\u0442\u0430\u0442\u044c \u0438 \u043f\u0440\u0430\u0432\u0438\u0442\u044c. \u041f\u043e\u044d\u0442\u043e\u043c\u0443, \u043f\u044b\u0442\u0430\u0435\u043c\u0441\u044f \u044f\u0432\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u043e\u0431\u043e\u0441\u043e\u0431\u0438\u0442\u044c \u0433\u043b\u0430\u0432\u043d\u043e\u0435, \u0447\u0442\u043e\u0431 \u0431\u044b\u043b\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u043e, \u0440\u0430\u0434\u0438 \u0447\u0435\u0433\u043e \u0432\u043e\u043e\u0431\u0449\u0435 \u044d\u0442\u043e \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0432\u0441\u0435.<\/p>\n<pre><code class=\"java\">public class ActionV4 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV4(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         return hasPermission(request, permissionService::canViewPage);     }       private CompletionStage&lt;Result> hasPermission(Request request, Function3&lt;ACHost, Account, Page, CompletionStage&lt;Boolean>> canViewPage) {         return permissionRequest(request)                 .map(canViewPage.tupled())                 .map(permission -> permission.thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden())))                 .orElse(completedFuture(unauthorized()));     }       private Optional&lt;Tuple3&lt;ACHost, Account, Page>> permissionRequest(Request request) {         return getAcHost(request).flatMap(acHost ->                 getAccount(request).flatMap(accountId ->                         getPage(request).map(pageId ->                                 Tuple.of(acHost, accountId, pageId))                 ));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0447\u0435\u0442\u043a\u043e\u0435 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u0435 &#171;\u0431\u0438\u0437\u043d\u0435\u0441-\u043b\u043e\u0433\u0438\u043a\u0438&#187;<\/p>\n<\/li>\n<li>\n<p>\u043b\u0435\u043d\u0438\u0432\u043e\u0441\u0442\u044c<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043d\u0443\u0436\u0435\u043d \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434, \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u043d\u044b\u0445 \u0432\u0435\u0449\u0435\u0439<\/p>\n<\/li>\n<\/ul>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u044f\u0442\u044b\u0439. \u041f\u0440\u0430\u0433\u043c\u0430\u0442\u0438\u0447\u043d\u044b\u0439<\/h3>\n<p>\u0412\u0441\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043f\u0440\u0430\u0432 \u043d\u0430\u043c \u043d\u0430\u0434\u043e \u0434\u043e\u0441\u0442\u0430\u0442\u044c \u0442\u0440\u0438 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u0438, \u043a\u0430\u0436\u0434\u043e\u0439 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043c\u043e\u0436\u0435\u0442 \u0438 \u043d\u0435 \u0431\u044b\u0442\u044c. \u0420\u0430\u0437\u0431\u0438\u0440\u0430\u0435\u043c\u0441\u044f \u0441 \u044d\u0442\u0438\u043c \u0432 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0447\u0435\u0440\u0435\u0434\u044c, \u0430 \u0434\u0430\u043b\u044c\u0448\u0435 \u0432\u0441\u0435 \u043f\u0440\u043e\u0441\u0442\u043e.<\/p>\n<pre><code class=\"java\">public class ActionV5 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV5(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         ACHost acHost = getAcHost(request).orElse(null);         Account account = getAccount(request).orElse(null);         Page page = getPage(request).orElse(null);           if (anyNull(acHost, account, page)) {             return completedFuture(unauthorized());         }           return permissionService.canViewPage(acHost, account, page)                 .thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden()));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043c\u0438\u043d\u0438\u043c\u0443\u043c \u043a\u043e\u0434\u0430 \u043f\u0440\u0438 \u043c\u0430\u043a\u0441\u0438\u043c\u0443\u043c\u0435 \u0432\u044b\u0440\u0430\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043b\u044e\u0434\u0435\u0439 \u043c\u043e\u0436\u0435\u0442 \u0441\u043c\u0443\u0449\u0430\u0442\u044c \u0438\u0434\u0438\u043e\u043c\u0430 early return\u00a0<\/p>\n<\/li>\n<li>\n<p>\u0435\u0441\u0442\u044c \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u043a\u0438 \u043a \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044e\u00a0<em>Optional<\/em>\u00a0<\/p>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/commons.apache.org\/proper\/commons-lang\/apidocs\/org\/apache\/commons\/lang3\/ObjectUtils.html#anyNull-java.lang.Object...-\" rel=\"noopener noreferrer nofollow\">anyNull<\/a>\u00a0\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u00a0<a href=\"https:\/\/commons.apache.org\/\" rel=\"noopener noreferrer nofollow\">Apache Commons<\/a><\/p>\n<h4>\u041e\u043f\u0440\u043e\u0441<\/h4>\n<p>\u0427\u0438\u0442\u0430\u0442\u0435\u043b\u044e \u044f \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e \u043e\u0442\u0432\u0435\u0442\u0438\u0442\u044c \u043d\u0430 \u0432\u043e\u043f\u0440\u043e\u0441: \u043a\u0430\u043a\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043d\u0440\u0430\u0432\u0438\u0442\u0441\u044f \u0431\u043e\u043b\u044c\u0448\u0435 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u044b\u0445, \u0430 \u0432 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f\u0445 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u0442\u044c \u043f\u043e\u0447\u0435\u043c\u0443 (\u0438\u043b\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0441\u0432\u043e\u0439 \u0435\u0441\u043b\u0438 \u0432\u0441\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u043f\u043b\u043e\u0445\u0438)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"v-portal\" style=\"display:none;\"><\/div>\n<\/div>\n<p> <!----> <\/p>\n<div class=\"tm-article-poll\">\n<div class=\"tm-notice tm-article-poll__notice tm-notice_positive\"><!----> <\/p>\n<div class=\"tm-notice__inner\"><!----> <\/p>\n<div class=\"tm-notice__content\"><span>\u0422\u043e\u043b\u044c\u043a\u043e \u0437\u0430\u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u043c\u043e\u0433\u0443\u0442 \u0443\u0447\u0430\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u0432 \u043e\u043f\u0440\u043e\u0441\u0435. <a rel=\"nofollow\" href=\"\/kek\/v1\/auth\/habrahabr\/?back=\/ru\/post\/648311\/&#038;hl=ru\">\u0412\u043e\u0439\u0434\u0438\u0442\u0435<\/a>, \u043f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430.<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__header\">\u041a\u0430\u043a\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442, \u043f\u043e \u0432\u0430\u0448\u0435\u043c\u0443, \u0431\u043e\u043b\u044c\u0448\u0435 \u0432\u0441\u0435\u0433\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442 \u043f\u043e\u0434 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u00ab\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043a\u043e\u0434\u00bb?<\/div>\n<div class=\"tm-article-poll__answers\">\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             20.93%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0435\u0440\u0432\u044b\u0439. \u041f\u0440\u043e\u0441\u0442\u043e\u0439, \u043d\u043e \u0441\u0443\u0440\u043e\u0432\u044b\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             9           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:20.93%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             2.33%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0432\u0442\u043e\u0440\u043e\u0439. \u0418\u0434\u0438\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             1           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:2.33%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             13.95%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0442\u0440\u0435\u0442\u0438\u0439. \u0425\u0438\u043f\u0441\u0442\u0435\u0440\u0441\u043a\u0438\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             6           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:13.95%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             11.63%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u044b\u0439. \u0410\u043a\u0446\u0435\u043d\u0442\u044b \u043d\u0430 \u0433\u043b\u0430\u0432\u043d\u043e\u043c<\/span> <span class=\"tm-article-poll__answer-votes\">             5           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:11.63%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent tm-article-poll__answer-percent_winning\">             74.42%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u044f\u0442\u044b\u0439. \u041f\u0440\u0430\u0433\u043c\u0430\u0442\u0438\u0447\u043d\u044b\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             32           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress tm-article-poll__answer-progress_winning\" style=\"width:74.42%;\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__stats\">        \u041f\u0440\u043e\u0433\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043b\u0438 43 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f.           \u0412\u043e\u0437\u0434\u0435\u0440\u0436\u0430\u043b\u0438\u0441\u044c 9 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439.      <\/div>\n<\/div>\n<p> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/post\/648311\/\"> https:\/\/habr.com\/ru\/post\/648311\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div><\/div>\n<div id=\"post-content-body\">\n<div>\n<div class=\"article-formatted-body article-formatted-body_version-2\">\n<div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">\n<blockquote>\n<p><em>\u041b\u0443\u0447\u0448\u0438\u0439 \u043a\u043e\u0434 \u2014 \u044d\u0442\u043e \u043d\u0435\u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0439 \u043a\u043e\u0434<\/em><\/p>\n<\/blockquote>\n<p>\u0421\u0430\u043b\u044e\u0442, \u043a\u043e\u043b\u043b\u0435\u0433\u0438.<\/p>\n<p>\u041b\u0438\u0447\u043d\u043e \u044f, \u043e\u0447\u0435\u043d\u044c \u043b\u044e\u0431\u043b\u044e \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043f\u0440\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0441\u0442\u044c \u0438 \u0432\u044b\u0440\u0430\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430 (\u044d\u0442\u0438 \u0443\u043c\u043d\u044b\u0435 \u0441\u043b\u043e\u0432\u0430, \u0447\u0430\u0441\u0442\u043e \u0437\u0432\u0443\u0447\u0430\u0442 \u043d\u0430 \u043a\u043e\u0434 \u0440\u0435\u0432\u044c\u044e)<\/p>\n<p>\u041a \u0441\u043e\u0436\u0430\u043b\u0435\u043d\u0438\u044e, \u0442\u0430\u043a\u0438\u0435 \u0440\u0430\u0437\u0433\u043e\u0432\u043e\u0440\u044b \u0447\u0430\u0441\u0442\u043e \u0438 \u0431\u044b\u0441\u0442\u0440\u043e \u0441\u043a\u0430\u0442\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u0445\u043e\u043b\u0438\u0432\u0430\u0440. \u041d\u043e, \u043a\u0430\u0436\u0435\u0442\u0441\u044f, \u044f \u043d\u0430\u0448\u0435\u043b \u0441\u043f\u043e\u0441\u043e\u0431 &#171;\u0432\u0435\u0441\u0442\u0438 \u0440\u0430\u0437\u0433\u043e\u0432\u043e\u0440\u044b \u043e \u0432\u044b\u0441\u043e\u043a\u043e\u043c \u0431\u0435\u0437 \u0431\u043e\u043b\u0438&#187;. <\/p>\n<p>\u041c\u044b\u0441\u043b\u044c \u0442\u0430\u043a\u0430\u044f, \u0435\u0441\u043b\u0438 \u043f\u0440\u0438\u0437\u0435\u043c\u043b\u0438\u0442\u044c \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u0443\u044e \u043f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u0437\u0430\u0434\u0430\u0447\u0443, \u0442\u043e \u0431\u0443\u0434\u0435\u0442 \u0441\u0438\u043b\u044c\u043d\u043e \u043f\u0440\u043e\u0449\u0435 \u043f\u043e\u043d\u044f\u0442\u044c, \u043a\u0430\u043a\u043e\u0439 \u0438\u043c\u0435\u043d\u043d\u043e \u0441\u043c\u044b\u0441\u043b \u0432\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u0442 \u0432 \u0441\u043b\u043e\u0432\u043e &#171;\u0432\u044b\u0440\u0430\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c&#187; \u0441\u043e\u0431\u0435\u0441\u0435\u0434\u043d\u0438\u043a.\u00a0<\/p>\n<h3>\u0417\u0430\u0434\u0430\u0447\u0430<\/h3>\n<p>\u041c\u044b \u0434\u0435\u043b\u0430\u0435\u043c\u00a0<a href=\"https:\/\/developer.atlassian.com\/cloud\/confluence\/getting-started-with-connect\/\" rel=\"noopener noreferrer nofollow\">\u0430\u0434\u0434\u043e\u043d \u0434\u043b\u044f Confluence Cloud<\/a>\u00a0\u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435\u00a0<a href=\"https:\/\/www.playframework.com\/\" rel=\"noopener noreferrer nofollow\">Play Framework<\/a>. \u0421\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u0447\u0435\u043c-\u0442\u043e \u0442\u0430\u043a\u0438\u043c \u044f \u043a\u0430\u0436\u0434\u044b\u0439 \u0434\u0435\u043d\u044c \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0441\u044c \u0432 Stiltsoft.<\/p>\n<p>\u0412\u043d\u0443\u0442\u0440\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0443 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0434\u0435\u0441\u044f\u0442\u043a\u043e\u0432 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432.<\/p>\n<pre><code class=\"java\">public class FeaturePageController extends Controller {       public CompletionStage&lt;Result> someAction1(Page page, Account account) {         return completedFuture(ok());     }       public CompletionStage&lt;Result> someAction2(Page page, Account account) {         return completedFuture(ok());     }       public CompletionStage&lt;Result> someAction3(Page page, Account account) {         return completedFuture(ok());     } }<\/code><\/pre>\n<p><strong><em>Page<\/em><\/strong>\u00a0&#8212; \u044d\u0442\u043e \u043a\u0430\u043a\u0430\u044f-\u0442\u043e \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430 \u0432 Confluence<\/p>\n<p><strong><em>Account<\/em><\/strong>\u00a0&#8212; \u044d\u0442\u043e \u043a\u0430\u043a\u043e\u0439-\u0442\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0432 Confluence<\/p>\n<p>\u041f\u0440\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0438 \u043a \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0443 (\u0432\u044b\u0437\u043e\u0432 \u043b\u044e\u0431\u043e\u0433\u043e \u0438\u0437 \u0435\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u043e\u0432) \u043d\u0430\u0434\u043e \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c, \u0438\u043c\u0435\u0435\u0442 \u043b\u0438 \u043f\u0440\u0430\u0432\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c <em>account<\/em> \u0432 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0435 \u0432\u0438\u0434\u0435\u0442\u044c \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0443 <em>page<\/em>.\u00a0<\/p>\n<p>\u0421\u0435\u0440\u0432\u0438\u0441, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443, \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a<\/p>\n<pre><code class=\"java\">public interface PermissionService {       CompletionStage&lt;Boolean> canViewPage(ACHost acHost, Account account, Page page);   }<\/code><\/pre>\n<p><strong><em>ACHost<\/em><\/strong>\u00a0&#8212; \u044d\u0442\u043e \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u044b\u0439 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440 Confluence, c \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0430\u0448 \u0441\u0435\u0440\u0432\u0438\u0441 (\u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043e\u0442 Atlassian Connect Host)<\/p>\n<p>\u0421\u0430\u043c\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0434\u043b\u044f\u00a0<em>canViewPage<\/em>\u00a0\u043c\u043e\u0436\u043d\u043e \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u0438\u0437 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 \u043c\u0435\u0442\u043e\u0434\u0430\u043c\u0438<\/p>\n<ul>\n<li>\n<p>Optional&lt;ACHost> getAcHost(Request request)<\/p>\n<\/li>\n<li>\n<p>Optional&lt;Account> getAccount(Request request)<\/p>\n<\/li>\n<li>\n<p>Optional&lt;Page> getPage(Request request)\u00a0<\/p>\n<\/li>\n<\/ul>\n<p>\u041d\u0430\u0434\u043e\u00a0<a href=\"https:\/\/www.playframework.com\/documentation\/2.8.x\/JavaActionsComposition\" rel=\"noopener noreferrer nofollow\">\u0438\u043d\u0442\u0435\u0433\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c PermissionService \u0432 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 Play Framework<\/a>, \u0447\u0442\u043e\u0431\u044b \u043d\u0435 \u0432\u044b\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0440\u0443\u043a\u0430\u043c\u0438 \u043a\u0430\u0436\u0434\u044b\u0439 \u0440\u0430\u0437, \u0430 \u043f\u0440\u043e\u0441\u0442\u043e \u0432\u0435\u0448\u0430\u0442\u044c \u0430\u043d\u043d\u043e\u0442\u0430\u0446\u0438\u044e \u043d\u0430 \u043d\u0443\u0436\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440.<\/p>\n<p><a href=\"https:\/\/github.com\/yorlov\/code-discussion\" rel=\"noopener noreferrer nofollow\">\u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0439 \u043a\u043e\u0434 \u0434\u043b\u044f \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c\/\u043f\u043e\u043a\u0440\u0443\u0442\u0438\u0442\u044c \u0432 IDE<\/a><\/p>\n<p>\u0421\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u044f \u0432\u0438\u0436\u0443, \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c, \u043f\u044f\u0442\u044c \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u0432 \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u0447\u0438. \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u043e\u0431\u0441\u0443\u0434\u0438\u043c \u0438\u0445 \u0432 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f\u0445 \ud83d\ude42<\/p>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0435\u0440\u0432\u044b\u0439. \u041f\u0440\u043e\u0441\u0442\u043e\u0439, \u043d\u043e \u0441\u0443\u0440\u043e\u0432\u044b\u0439<\/h3>\n<p>\u0420\u0435\u0448\u0430\u0435\u043c \u0437\u0430\u0434\u0430\u0447\u0443 \u0432 \u043b\u043e\u0431.<\/p>\n<pre><code class=\"java\">public class ActionV1 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV1(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         Optional&lt;ACHost> acHostOpt = getAcHost(request);         Optional&lt;Account> accountOpt = getAccount(request);         Optional&lt;Page> pageOpt = getPage(request);           if (acHostOpt.isPresent() &amp;&amp; accountOpt.isPresent() &amp;&amp; pageOpt.isPresent()) {             return permissionService.canViewPage(acHostOpt.get(), accountOpt.get(), pageOpt.get()).thenComposeAsync(canView -> {                 if (canView) {                     return delegate.call(request);                 } else {                     return completedFuture(forbidden());                 }             });         } else {             return completedFuture(unauthorized());         }     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043d\u044f\u0442\u044c \u043a\u043e\u0434, \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0437\u043d\u0430\u0442\u044c \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 java 8<\/p>\n<\/li>\n<li>\n<p>\u043f\u0440\u044f\u043c\u043e\u043b\u0438\u043d\u0435\u0439\u043d\u044b\u0439 \u043a\u043e\u0434: \u0432\u0437\u044f\u043b\u0438, \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u043b\u0438, \u0432\u044b\u0437\u0432\u0430\u043b\u0438<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0442\u0440\u0438 \u0443\u0440\u043e\u0432\u043d\u044f \u0432\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0441\u0442\u0438, \u0434\u0432\u0430 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f<\/p>\n<\/li>\n<li>\n<p>\u0432\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u043e \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 \u043c\u043d\u043e\u0433\u043e \u043c\u0435\u0441\u0442\u0430, \u0445\u043e\u0442\u044f \u043d\u0438\u0447\u0435\u0433\u043e \u0441\u043b\u043e\u0436\u043d\u043e\u0433\u043e \u043d\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442<\/p>\n<\/li>\n<li>\n<p>\u043d\u0435 \u0438\u0434\u0438\u043e\u043c\u0430\u0442\u0438\u0447\u043d\u043e\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u00a0<em>Optional<\/em><\/p>\n<\/li>\n<\/ul>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0432\u0442\u043e\u0440\u043e\u0439. \u0418\u0434\u0438\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439<\/h3>\n<p>\u0411\u0435\u0440\u0435\u043c \u0432 \u0440\u0443\u043a\u0438\u00a0<em>Optional\u00a0<\/em>\u0438 \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u043c &#171;\u0444\u043b\u044d\u0442\u043c\u0430\u043f\u0430\u0442\u044c&#187; \u043d\u0430 \u0432\u0441\u0435 \u0434\u0435\u043d\u044c\u0433\u0438<\/p>\n<pre><code class=\"java\">public class ActionV2 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV2(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         return getAcHost(request).flatMap(acHost ->                 getAccount(request).flatMap(account ->                         getPage(request).map(page ->                                 permissionService.canViewPage(acHost, account, page))))                 .map(permission -> permission.thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden())))                 .orElse(completedFuture(unauthorized()));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043c\u0438\u043d\u0438\u043c\u0443\u043c \u043a\u043e\u0434\u0430<\/p>\n<\/li>\n<li>\n<p>\u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434, \u0432\u0441\u0435\u0433\u043e \u043e\u0434\u043d\u043e \u044f\u0432\u043d\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435<\/p>\n<\/li>\n<li>\n<p>\u043b\u0435\u043d\u0438\u0432\u043e\u0441\u0442\u044c, \u0435\u0441\u043b\u0438 \u043a\u0430\u043a\u043e\u0435-\u0442\u043e \u0438\u0437 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043d\u0435 \u0431\u0443\u0434\u0435\u0442 \u043d\u0430\u0439\u0434\u0435\u043d\u043e, \u043f\u043e\u0438\u0441\u043a \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0433\u043e \u0434\u0430\u0436\u0435 \u043d\u0435 \u043d\u0430\u0447\u043d\u0435\u0442\u0441\u044f<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p><a href=\"http:\/\/callbackhell.com\/\" rel=\"noopener noreferrer nofollow\">callback hell<\/a><\/p>\n<\/li>\n<\/ul>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0442\u0440\u0435\u0442\u0438\u0439. \u0425\u0438\u043f\u0441\u0442\u0435\u0440\u0441\u043a\u0438\u0439<\/h3>\n<p>\u0412\u043e\u043e\u0440\u0443\u0436\u0430\u0435\u043c\u0441\u044f \u0442\u0435\u0440\u043c\u0438\u043d\u043e\u043b\u043e\u0433\u0438\u0435\u0439 \u0432 \u0441\u0442\u0438\u043b\u0435 &#171;\u043c\u043e\u043d\u043e\u0438\u0434 \u0432 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438 \u044d\u043d\u0434\u043e\u0444\u0443\u043d\u043a\u0442\u043e\u0440\u043e\u0432&#187; \u0438 \u043f\u0438\u0448\u0435\u043c<\/p>\n<pre><code class=\"java\">public class ActionV3 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV3(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         Function3&lt;ACHost, Account, Page, CompletionStage&lt;Boolean>> canViewPage = permissionService::canViewPage;           return Optional.of(canViewPage.curried())                 .flatMap(acHostFn -> getAcHost(request).map(acHostFn))                 .flatMap(accountFn -> getAccount(request).map(accountFn))                 .flatMap(pageFn -> getPage(request).map(pageFn))                 .map(permission -> permission.thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden())))                 .orElse(completedFuture(unauthorized()));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u0430\u0439\u043f\u043b\u0430\u0439\u043d<\/p>\n<\/li>\n<li>\n<p>\u043b\u0435\u043d\u0438\u0432\u043e\u0441\u0442\u044c<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043d\u044f\u0442\u044c \u043a\u043e\u0434, \u043d\u0430\u0434\u043e \u0431\u044b\u0442\u044c \u0437\u043d\u0430\u043a\u043e\u043c\u044b\u043c \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u043c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c<\/p>\n<ul>\n<li>\n<p>\u0432 \u0447\u0430\u0441\u0442\u043d\u043e\u0441\u0442\u0438, \u043f\u043e\u043d\u0430\u0434\u043e\u0431\u0438\u0442\u0441\u044f \u043f\u043e\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043a\u043e\u043d\u0446\u0435\u043f\u0442\u043e\u0432:\u00a0<a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9A%D0%B0%D1%80%D1%80%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5\" rel=\"noopener noreferrer nofollow\">\u043a\u0430\u0440\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f<\/a>,\u00a0<a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A7%D0%B0%D1%81%D1%82%D0%B8%D1%87%D0%BD%D0%BE%D0%B5_%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5\" rel=\"noopener noreferrer nofollow\">\u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u00a0<\/a><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/javadoc.io\/doc\/io.vavr\/vavr\/0.9.2\/io\/vavr\/Function3.html\" rel=\"noopener noreferrer nofollow\">Function3<\/a>\u00a0\u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u043c\u0435\u0442\u043e\u0434\u043e\u043c\u00a0<em>curried\u00a0<\/em>\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430\u00a0<a href=\"https:\/\/www.vavr.io\/\" rel=\"noopener noreferrer nofollow\">Vavr<\/a><\/p>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u044b\u0439. \u0410\u043a\u0446\u0435\u043d\u0442\u044b \u043d\u0430 \u0433\u043b\u0430\u0432\u043d\u043e\u043c<\/h3>\n<p>\u041a\u043e\u0434 \u043f\u0438\u0448\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043b\u044e\u0434\u0435\u0439 \u0438 \u0435\u0441\u0442\u044c \u0432\u0435\u0440\u043e\u044f\u0442\u043d\u043e\u0441\u0442\u044c, \u0447\u0442\u043e \u043f\u043e\u0442\u043e\u043c \u0435\u0433\u043e \u0431\u0443\u0434\u0443\u0442 \u0447\u0438\u0442\u0430\u0442\u044c \u0438 \u043f\u0440\u0430\u0432\u0438\u0442\u044c. \u041f\u043e\u044d\u0442\u043e\u043c\u0443, \u043f\u044b\u0442\u0430\u0435\u043c\u0441\u044f \u044f\u0432\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u043e\u0431\u043e\u0441\u043e\u0431\u0438\u0442\u044c \u0433\u043b\u0430\u0432\u043d\u043e\u0435, \u0447\u0442\u043e\u0431 \u0431\u044b\u043b\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u043e, \u0440\u0430\u0434\u0438 \u0447\u0435\u0433\u043e \u0432\u043e\u043e\u0431\u0449\u0435 \u044d\u0442\u043e \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0432\u0441\u0435.<\/p>\n<pre><code class=\"java\">public class ActionV4 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV4(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         return hasPermission(request, permissionService::canViewPage);     }       private CompletionStage&lt;Result> hasPermission(Request request, Function3&lt;ACHost, Account, Page, CompletionStage&lt;Boolean>> canViewPage) {         return permissionRequest(request)                 .map(canViewPage.tupled())                 .map(permission -> permission.thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden())))                 .orElse(completedFuture(unauthorized()));     }       private Optional&lt;Tuple3&lt;ACHost, Account, Page>> permissionRequest(Request request) {         return getAcHost(request).flatMap(acHost ->                 getAccount(request).flatMap(accountId ->                         getPage(request).map(pageId ->                                 Tuple.of(acHost, accountId, pageId))                 ));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u0447\u0435\u0442\u043a\u043e\u0435 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u0435 &#171;\u0431\u0438\u0437\u043d\u0435\u0441-\u043b\u043e\u0433\u0438\u043a\u0438&#187;<\/p>\n<\/li>\n<li>\n<p>\u043b\u0435\u043d\u0438\u0432\u043e\u0441\u0442\u044c<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043d\u0443\u0436\u0435\u043d \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434, \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u043d\u044b\u0445 \u0432\u0435\u0449\u0435\u0439<\/p>\n<\/li>\n<\/ul>\n<h3>\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u044f\u0442\u044b\u0439. \u041f\u0440\u0430\u0433\u043c\u0430\u0442\u0438\u0447\u043d\u044b\u0439<\/h3>\n<p>\u0412\u0441\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043f\u0440\u0430\u0432 \u043d\u0430\u043c \u043d\u0430\u0434\u043e \u0434\u043e\u0441\u0442\u0430\u0442\u044c \u0442\u0440\u0438 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u0438, \u043a\u0430\u0436\u0434\u043e\u0439 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043c\u043e\u0436\u0435\u0442 \u0438 \u043d\u0435 \u0431\u044b\u0442\u044c. \u0420\u0430\u0437\u0431\u0438\u0440\u0430\u0435\u043c\u0441\u044f \u0441 \u044d\u0442\u0438\u043c \u0432 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0447\u0435\u0440\u0435\u0434\u044c, \u0430 \u0434\u0430\u043b\u044c\u0448\u0435 \u0432\u0441\u0435 \u043f\u0440\u043e\u0441\u0442\u043e.<\/p>\n<pre><code class=\"java\">public class ActionV5 extends Action&lt;RequireAccessToPage> {       private PermissionService permissionService;       @Inject     public ActionV5(PermissionService permissionService) {         this.permissionService = permissionService;     }       @Override     public CompletionStage&lt;Result> call(Request request) {         ACHost acHost = getAcHost(request).orElse(null);         Account account = getAccount(request).orElse(null);         Page page = getPage(request).orElse(null);           if (anyNull(acHost, account, page)) {             return completedFuture(unauthorized());         }           return permissionService.canViewPage(acHost, account, page)                 .thenComposeAsync(canView -> canView ? delegate.call(request) : completedFuture(forbidden()));     } }<\/code><\/pre>\n<p>\u0421\u0438\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043c\u0438\u043d\u0438\u043c\u0443\u043c \u043a\u043e\u0434\u0430 \u043f\u0440\u0438 \u043c\u0430\u043a\u0441\u0438\u043c\u0443\u043c\u0435 \u0432\u044b\u0440\u0430\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/p>\n<\/li>\n<\/ul>\n<p>\u0421\u043b\u0430\u0431\u044b\u0435 \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0440\u0435\u0448\u0435\u043d\u0438\u044f<\/p>\n<ul>\n<li>\n<p>\u043b\u044e\u0434\u0435\u0439 \u043c\u043e\u0436\u0435\u0442 \u0441\u043c\u0443\u0449\u0430\u0442\u044c \u0438\u0434\u0438\u043e\u043c\u0430 early return\u00a0<\/p>\n<\/li>\n<li>\n<p>\u0435\u0441\u0442\u044c \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u043a\u0438 \u043a \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044e\u00a0<em>Optional<\/em>\u00a0<\/p>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/commons.apache.org\/proper\/commons-lang\/apidocs\/org\/apache\/commons\/lang3\/ObjectUtils.html#anyNull-java.lang.Object...-\" rel=\"noopener noreferrer nofollow\">anyNull<\/a>\u00a0\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u00a0<a href=\"https:\/\/commons.apache.org\/\" rel=\"noopener noreferrer nofollow\">Apache Commons<\/a><\/p>\n<h4>\u041e\u043f\u0440\u043e\u0441<\/h4>\n<p>\u0427\u0438\u0442\u0430\u0442\u0435\u043b\u044e \u044f \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e \u043e\u0442\u0432\u0435\u0442\u0438\u0442\u044c \u043d\u0430 \u0432\u043e\u043f\u0440\u043e\u0441: \u043a\u0430\u043a\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043d\u0440\u0430\u0432\u0438\u0442\u0441\u044f \u0431\u043e\u043b\u044c\u0448\u0435 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u044b\u0445, \u0430 \u0432 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f\u0445 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u0442\u044c \u043f\u043e\u0447\u0435\u043c\u0443 (\u0438\u043b\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0441\u0432\u043e\u0439 \u0435\u0441\u043b\u0438 \u0432\u0441\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u043f\u043b\u043e\u0445\u0438)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"v-portal\" style=\"display:none;\"><\/div>\n<\/div>\n<p> <!----> <\/p>\n<div class=\"tm-article-poll\">\n<div class=\"tm-notice tm-article-poll__notice tm-notice_positive\"><!----> <\/p>\n<div class=\"tm-notice__inner\"><!----> <\/p>\n<div class=\"tm-notice__content\"><span>\u0422\u043e\u043b\u044c\u043a\u043e \u0437\u0430\u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u043c\u043e\u0433\u0443\u0442 \u0443\u0447\u0430\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u0432 \u043e\u043f\u0440\u043e\u0441\u0435. <a rel=\"nofollow\" href=\"\/kek\/v1\/auth\/habrahabr\/?back=\/ru\/post\/648311\/&#038;hl=ru\">\u0412\u043e\u0439\u0434\u0438\u0442\u0435<\/a>, \u043f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430.<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__header\">\u041a\u0430\u043a\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442, \u043f\u043e \u0432\u0430\u0448\u0435\u043c\u0443, \u0431\u043e\u043b\u044c\u0448\u0435 \u0432\u0441\u0435\u0433\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442 \u043f\u043e\u0434 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u00ab\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043a\u043e\u0434\u00bb?<\/div>\n<div class=\"tm-article-poll__answers\">\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             20.93%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0435\u0440\u0432\u044b\u0439. \u041f\u0440\u043e\u0441\u0442\u043e\u0439, \u043d\u043e \u0441\u0443\u0440\u043e\u0432\u044b\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             9           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:20.93%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             2.33%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0432\u0442\u043e\u0440\u043e\u0439. \u0418\u0434\u0438\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             1           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:2.33%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             13.95%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0442\u0440\u0435\u0442\u0438\u0439. \u0425\u0438\u043f\u0441\u0442\u0435\u0440\u0441\u043a\u0438\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             6           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:13.95%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent\">             11.63%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u044b\u0439. \u0410\u043a\u0446\u0435\u043d\u0442\u044b \u043d\u0430 \u0433\u043b\u0430\u0432\u043d\u043e\u043c<\/span> <span class=\"tm-article-poll__answer-votes\">             5           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress\" style=\"width:11.63%;\"><\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__answer\">\n<div class=\"tm-article-poll__answer-data\"><span class=\"tm-article-poll__answer-percent tm-article-poll__answer-percent_winning\">             74.42%           <\/span> <span class=\"tm-article-poll__answer-label\">\u0412\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u044f\u0442\u044b\u0439. \u041f\u0440\u0430\u0433\u043c\u0430\u0442\u0438\u0447\u043d\u044b\u0439<\/span> <span class=\"tm-article-poll__answer-votes\">             32           <\/span><\/div>\n<div class=\"tm-article-poll__answer-bar\">\n<div class=\"tm-article-poll__answer-progress tm-article-poll__answer-progress_winning\" style=\"width:74.42%;\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"tm-article-poll__stats\">        \u041f\u0440\u043e\u0433\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043b\u0438 43 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f.           \u0412\u043e\u0437\u0434\u0435\u0440\u0436\u0430\u043b\u0438\u0441\u044c 9 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439.      <\/div>\n<\/div>\n<p> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/post\/648311\/\"> https:\/\/habr.com\/ru\/post\/648311\/<\/a><br \/><\/br><\/br><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-328746","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/328746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=328746"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/328746\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=328746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=328746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=328746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}