[Canvas] Fixes the Copy Post Url link

x-pack/legacy/plugins/canvas/public/components/workpad_header/workpad_export/index.ts

@@ -62,12 +62,8 @@ export const WorkpadExport = compose<ComponentProps, {}>(
       enabled,
       getExportUrl: type => {
         if (type === 'pdf') {
-          const { createPdfUri } = getPdfUrl(
-            workpad,
-            { pageCount },
-            kibana.services.http.basePath.prepend
-          );
-          return getAbsoluteUrl(createPdfUri);
+          const pdfUrl = getPdfUrl(workpad, { pageCount }, kibana.services.http.basePath.prepend);
+          return getAbsoluteUrl(pdfUrl);
         }
 
         throw new Error(strings.getUnknownExportErrorMessage(type));

x-pack/legacy/plugins/canvas/public/components/workpad_header/workpad_export/utils.ts

@@ -7,6 +7,7 @@
 import rison from 'rison-node';
 // @ts-ignore Untyped local.
 import { fetch } from '../../../../common/lib/fetch';
+import { getStartPlugins } from '../../../legacy';
 import { CanvasWorkpad } from '../../../../types';
 
 // type of the desired pdf output (print or preserve_layout)
@@ -25,7 +26,7 @@ interface PdfUrlData {
   createPdfPayload: { jobParams: string };
 }
 
-export function getPdfUrl(
+function getPdfUrlParts(
   { id, name: title, width, height }: CanvasWorkpad,
   { pageCount }: PageCount,
   addBasePath: (path: string) => string
@@ -68,7 +69,16 @@ export function getPdfUrl(
   };
 }
 
+export function getPdfUrl(...args: Arguments): string {
+  const urlParts = getPdfUrlParts(...args);
+
+  return `${urlParts.createPdfUri}?${getStartPlugins().__LEGACY.QueryString.param(
+    'jobParams',
+    urlParts.createPdfPayload.jobParams
+  )}`;
+}
+
 export function createPdf(...args: Arguments) {
-  const { createPdfUri, createPdfPayload } = getPdfUrl(...args);
+  const { createPdfUri, createPdfPayload } = getPdfUrlParts(...args);
   return fetch.post(createPdfUri, createPdfPayload);
 }

x-pack/legacy/plugins/canvas/public/legacy.ts

@@ -15,6 +15,8 @@ import { absoluteToParsedUrl } from 'ui/url/absolute_to_parsed_url'; // eslint-d
 import { Storage } from '../../../../../src/plugins/kibana_utils/public'; // eslint-disable-line import/order
 // @ts-ignore Untyped Kibana Lib
 import { formatMsg } from 'ui/notify/lib/format_msg'; // eslint-disable-line import/order
+// @ts-ignore Untyped Kibana Lib
+import { QueryString } from 'ui/utils/query_string'; // eslint-disable-line import/order
 
 const shimCoreSetup = {
   ...npSetup.core,
@@ -30,6 +32,7 @@ const shimStartPlugins: CanvasStartDeps = {
     absoluteToParsedUrl,
     // ToDo: Copy directly into canvas
     formatMsg,
+    QueryString,
     // ToDo: Remove in favor of core.application.register
     setRootController: chrome.setRootController,
     storage: Storage,

x-pack/legacy/plugins/canvas/public/plugin.tsx

@@ -39,6 +39,7 @@ export interface CanvasStartDeps {
   __LEGACY: {
     absoluteToParsedUrl: (url: string, basePath: string) => any;
     formatMsg: any;
+    QueryString: any;
     setRootController: Chrome['setRootController'];
     storage: typeof Storage;
     trackSubUrlForApp: Chrome['trackSubUrlForApp'];