When doing a MapReduce operation there are times when you want to edit a set of entities without triggering the post or pre put hooks associated with those entities. On such ocassions using the raw datastore entity allows you to process the data without unwanted side effects. This article will show how to use the RawDatastoreInputReader to process datastore entities. ...
The Cloud Endpoints API comes packaged with endpointscfg.py to generate client libraries in JavaScript, Objective-C (for iOS) and Java (for Android). You can also generate a few additional client libraries using the Google APIs client generator. This article will show you how to use the generator to create a C# client library. ...
Cloud Endpoints provides strong integration with OAuth 2.0. If you can use this integration – do it. However, some legacy systems require supporting alternative authentication mechanisms. This article will show you how to secure an API endpoint using Basic Authentication. You can use this as a starting point for whatever authentication method you choose. ...
Writing unit tests for App Engine Cloud Endpoints is a fairly straight forward process. Unfortunately it is not well documented and a few gotchas exist. This article provides a template you can use to unit test Cloud Endpoints including full source code for a working example. ...
App Engine Cloud Endpoints is a great way to quickly and easily create JSON API endpoints. What’s not clear is how to structure your Message code to support a RESTful create-read-update-delete (CRUD) API. This article will show the basic CRUD operations for one Resource. The results can easily be adapted to support a full REST API. ...
The recently released App Engine Modules API allows developers to compartmentalize their applications into logical units that can share state using the datastore or memcache. ...
At VendAsta we frequently share libraries of code between projects. To make it easier to share this code I’ve developed a small package manager that downloads code within a directory from Github to be copied in to your current project. It’s a quick and dirty alternative to cloning an entire repository, grabbing the set of files you want and placing them in your project. ...
In App Engine the auto_now option sets a property to the current date/time whenever the entity is created or updated. This is a great feature for tracking the time when an entity was last updated. However, sometimes you may want to put an entity without updating an auto_now timestamp. This article will show you how. ...
View all articles in the MapReduce API Series. So far we’ve looked at using MapReduce pipelines to perform calculations over large data sets and combined multiple pipelines in succession. In this article we will look at how to reduce the amount of data transfer by using a combiner. ...
View all articles in the MapReduce API Series. Last time we looked at how to run a full MapReduce Pipeline to count the number of occurrences of a character within each string. In this post we will see how to chain multiple MapReduce Pipelines together to perform sequential tasks. ...