{"action":"created","comment":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/comments/27439333","id":27439333,"diff_hunk":"@@ -0,0 +1,52 @@\n+/*\n+ * Copyright © 2015 Cask Data, Inc.\n+ *\n+ * Licensed under the Apache License, Version 2.0 (the \"License\"); you may not\n+ * use this file except in compliance with the License. You may obtain a copy of\n+ * the License at\n+ *\n+ * http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT\n+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\n+ * License for the specific language governing permissions and limitations under\n+ * the License.\n+ */\n+\n+package co.cask.cdap.common.exception;\n+\n+import co.cask.cdap.common.http.SecurityRequestContext;\n+import co.cask.http.ExceptionHandler;\n+import co.cask.http.HttpResponder;\n+import org.jboss.netty.handler.codec.http.HttpRequest;\n+import org.jboss.netty.handler.codec.http.HttpResponseStatus;\n+import org.slf4j.Logger;\n+import org.slf4j.LoggerFactory;\n+\n+/**\n+ * Common logic to handle exceptions in handler methods.\n+ */\n+public class HttpExceptionHandler extends ExceptionHandler {\n+\n+  private static final Logger LOG = LoggerFactory.getLogger(HttpExceptionHandler.class);\n+\n+  @Override\n+  public void handle(Throwable t, HttpRequest request, HttpResponder responder) {\n+    if (t instanceof BadRequestException) {\n+      responder.sendString(HttpResponseStatus.BAD_REQUEST, t.getMessage());\n+    } else if (t instanceof ConflictException) {\n+      responder.sendString(HttpResponseStatus.CONFLICT, t.getMessage());\n+    } else if (t instanceof NotFoundException) {\n+      responder.sendString(HttpResponseStatus.NOT_FOUND, t.getMessage());\n+    } else if (t instanceof UnauthorizedException) {\n+      responder.sendStatus(HttpResponseStatus.UNAUTHORIZED);","path":"cdap-common/src/main/java/co/cask/cdap/common/exception/HttpExceptionHandler.java","position":43,"original_position":43,"commit_id":"791d005594d10b8647e1fe808a8ccbcf07e7823d","original_commit_id":"791d005594d10b8647e1fe808a8ccbcf07e7823d","user":{"login":"bdmogal","id":3895099,"avatar_url":"https://avatars.githubusercontent.com/u/3895099?v=3","gravatar_id":"","url":"https://api.github.com/users/bdmogal","html_url":"https://github.com/bdmogal","followers_url":"https://api.github.com/users/bdmogal/followers","following_url":"https://api.github.com/users/bdmogal/following{/other_user}","gists_url":"https://api.github.com/users/bdmogal/gists{/gist_id}","starred_url":"https://api.github.com/users/bdmogal/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bdmogal/subscriptions","organizations_url":"https://api.github.com/users/bdmogal/orgs","repos_url":"https://api.github.com/users/bdmogal/repos","events_url":"https://api.github.com/users/bdmogal/events{/privacy}","received_events_url":"https://api.github.com/users/bdmogal/received_events","type":"User","site_admin":false},"body":"better 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