{"action":"created","comment":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/comments/55929070","id":55929070,"diff_hunk":"@@ -440,13 +443,56 @@ public void getArtifactPlugins(HttpRequest request, HttpResponder responder,\n     } catch (IOException e) {\n       LOG.error(\"Exception looking up plugins for artifact {}\", artifactId, e);\n       responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR,\n-        \"Error reading plugins for the artifact from the store.\");\n+                           \"Error reading plugins for the artifact from the store.\");\n+    }\n+  }\n+\n+  @Beta\n+  @POST\n+  @Path(\"/namespaces/{namespace-id}/artifacts/{artifact-name}/\" +\n+    \"versions/{artifact-version}/plugintypes/{plugin-type}/plugins/{plugin-name}/methods/{plugin-method}\")\n+  public void callArtifactPluginMethod(HttpRequest request, HttpResponder responder,\n+                                       @PathParam(\"namespace-id\") String namespaceId,\n+                                       @PathParam(\"artifact-name\") String artifactName,\n+                                       @PathParam(\"artifact-version\") String artifactVersion,\n+                                       @PathParam(\"plugin-name\") String pluginName,\n+                                       @PathParam(\"plugin-type\") String pluginType,\n+                                       @PathParam(\"plugin-method\") String methodName,\n+                                       @QueryParam(\"scope\") @DefaultValue(\"user\") String scope)\n+    throws NamespaceNotFoundException, BadRequestException, ArtifactNotFoundException, IOException {\n+\n+    String requestBody = request.getContent().toString(Charsets.UTF_8);\n+    Id.Namespace namespace = Id.Namespace.from(namespaceId);\n+    Id.Namespace artifactNamespace = validateAndGetScopedNamespace(namespace, scope);\n+    Id.Artifact artifactId = validateAndGetArtifactId(artifactNamespace, artifactName, artifactVersion);\n+    if (requestBody.isEmpty()) {\n+      responder.sendJson(HttpResponseStatus.BAD_REQUEST, \"Request body is used as plugin method parameter, \" +\n+        \"Received empty request body. \");\n+      return;\n+    }\n+    try {\n+      String response =\n+        artifactRepository.pickParentArtifactAndInvokePluginEndpoint(namespace, artifactId, pluginType,\n+                                                                     pluginName, methodName, requestBody);\n+      responder.sendJson(HttpResponseStatus.OK, response);\n+    } catch (NotFoundException | IllegalArgumentException e) {\n+      LOG.error(\"Exception when invoking plugin method\", e);","path":"cdap-app-fabric/src/main/java/co/cask/cdap/gateway/handlers/ArtifactHttpHandler.java","position":89,"original_position":89,"commit_id":"848f6cc99e0d190a0e858645acd33246869715bd","original_commit_id":"848f6cc99e0d190a0e858645acd33246869715bd","user":{"login":"albertshau","id":5215004,"avatar_url":"https://avatars.githubusercontent.com/u/5215004?v=3","gravatar_id":"","url":"https://api.github.com/users/albertshau","html_url":"https://github.com/albertshau","followers_url":"https://api.github.com/users/albertshau/followers","following_url":"https://api.github.com/users/albertshau/following{/other_user}","gists_url":"https://api.github.com/users/albertshau/gists{/gist_id}","starred_url":"https://api.github.com/users/albertshau/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/albertshau/subscriptions","organizations_url":"https://api.github.com/users/albertshau/orgs","repos_url":"https://api.github.com/users/albertshau/repos","events_url":"https://api.github.com/users/albertshau/events{/privacy}","received_events_url":"https://api.github.com/users/albertshau/received_events","type":"User","site_admin":false},"body":"why does an illegal argument exception translate to a not found?  Also, you don't have to catch this, you can just let this bubble up and the framework will take care of returning a 404.","created_at":"2016-03-12T22:52:00Z","updated_at":"2016-03-12T22:52:00Z","html_url":"https://github.com/caskdata/cdap/pull/5264#discussion_r55929070","pull_request_url":"https://api.github.com/repos/caskdata/cdap/pulls/5264","_links":{"self":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/comments/55929070"},"html":{"href":"https://github.com/caskdata/cdap/pull/5264#discussion_r55929070"},"pull_request":{"href":"https://api.github.com/repos/caskdata/cdap/pulls/5264"}}},"pull_request":{"url":"https://api.github.com/repos/caskdata/cdap/pulls/5264","id":62282744,"html_url":"https://github.com/caskdata/cdap/pull/5264","diff_url":"https://github.com/caskdata/cdap/pull/5264.diff","patch_url":"https://github.com/caskdata/cdap/pull/5264.patch","issue_url":"https://api.github.com/repos/caskdata/cdap/issues/5264","number":5264,"state":"open","locked":false,"title":"CDAP-5152 Invoke Plugin endpoint method from Artifact handler","user":{"login":"gsps1","id":1328150,"avatar_url":"https://avatars.githubusercontent.com/u/1328150?v=3","gravatar_id":"","url":"https://api.github.com/users/gsps1","html_url":"https://github.com/gsps1","followers_url":"https://api.github.com/users/gsps1/followers","following_url":"https://api.github.com/users/gsps1/following{/other_user}","gists_url":"https://api.github.com/users/gsps1/gists{/gist_id}","starred_url":"https://api.github.com/users/gsps1/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gsps1/subscriptions","organizations_url":"https://api.github.com/users/gsps1/orgs","repos_url":"https://api.github.com/users/gsps1/repos","events_url":"https://api.github.com/users/gsps1/events{/privacy}","received_events_url":"https://api.github.com/users/gsps1/received_events","type":"User","site_admin":false},"body":"Implementation of app-fabric endpoint to hit plugin endpoint methods. \r\n\r\nNext steps:\r\n1) Implementation of plugin methods listTables and getSchema for DBSource in Hydrator plugins repo.\r\n\r\nJIRA : https://issues.cask.co/browse/CDAP-5152\r\nBuild : 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