{"id":1122,"date":"2010-06-23T13:07:51","date_gmt":"2010-06-23T07:37:51","guid":{"rendered":"https:\/\/tothenewco.pro\/blog\/?p=1122"},"modified":"2016-12-19T15:06:30","modified_gmt":"2016-12-19T09:36:30","slug":"opening-pdf-in-google-docs-using-time-based-cache","status":"publish","type":"post","link":"https:\/\/tothenewco.pro\/blog\/opening-pdf-in-google-docs-using-time-based-cache\/","title":{"rendered":"Open Pdf in Google Docs using Time Based Cache in Grails"},"content":{"rendered":"

Recently, we had a requirement where secure URLs were to be made accessible to Google.<\/p>\n

Our implementation was to send a url with token valid for 10 seconds. The token expired automatically after 10 seconds. We used time based cache for this as described here: <\/span><\/p>\n

T set max time to 10 seconds , I set default MaxAge to 10 millis in above file only which could have also been done easily using its constructor.<\/p>\n

Here’s how we did it ,<\/p>\n

class AbcController {\r\n    static TimedMap timedMap = new TimedMap()\r\n\r\n   \/\/  while calling \"addDocumentUrl\" path of document was passed as params attachmentPath\r\n    def addDocumentUrl = {\r\n \t        String attachmentPath = params.attachmentPath\r\n \t        String token = UUID.randomUUID().toString()\r\n \t        timedMap.put(uniqueIdentification,attachmentPath)\r\n \t        redirect(url: getGoogleUrl(token))          \/\/ this will  make google hit specified url\r\n \t    }\r\n\r\n     String getGoogleUrl(String token) {\r\n \t        String absoluteUrl = ConfigurationHolder.config.builder.absoluteURL\r\n                String GOOGLE_URL=\"http:\/\/docs.google.com\/viewer?embedded=true&url=\"\r\n \t        String googlePath = GOOGLE_URL + absoluteUrl + \"\/abc\/someAction\/\" + token\r\n \t        return googlePath\r\n \t    }\r\n}<\/pre>\n
Action someAction was made public so that Google was able to access it. And when Google hits this action it gives token as id.<\/p>\n
   def someAction = {\r\n        String key = params.id.toString()\r\n        try {\r\n            String attachmentPath = timedMap.get(key)\r\n            File file = new File(attachmentPath)\r\n            response.setHeader(\"Content-disposition\", \"attachment; filename=pdf\")\r\n            response.setContentType(\"application\/pdf\")\r\n            response.setContentLength(file.size().toInteger());\r\n            OutputStream out = response.getOutputStream();\r\n            out.write(file.readBytes());\r\n            out.flush()\r\n            out.close();\r\n        } catch (Exception e) {\r\n            e.printStackTrace()\r\n        }\r\n    }<\/pre>\n
_______________________________
\nHitesh Bhatia
\nhitesh@intelligrape.com<\/p>\n
_______________________________<\/p>\n","protected":false},"excerpt":{"rendered":"
Recently, we had a requirement where secure URLs were to be made accessible to Google. Our implementation was to send a url with token valid for 10 seconds. The token expired automatically after 10 seconds. We used time based cache for this as described here: T set max time to 10 seconds , I set […]<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":12,"footnotes":""},"categories":[7],"tags":[291,4840,9,292,290,293,294],"class_list":["post-1122","post","type-post","status-publish","format-standard","hentry","category-grails","tag-google-doc","tag-grails","tag-groovy","tag-pdf","tag-public-url","tag-time-based-map","tag-timed-url"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t