Sample 0112 - Analyzing Twitter Feeds Using Partitions

Introduction

This sample demonstrates how to set up an execution plan with a Siddhi query that monitors Twitter feeds of organizations using Siddhi partitions. It uses the following Siddhi query to check whether the word count of the Twitter feeds of each company within the last minute is greater than 10, and publishes the details of the companies with a high frequency of Twitter feeds as the output. This query has one incoming custom event stream of the word counts of various company names taken from Twitter pages. Custom events are events with custom mappings that do not adhere to the default event formats. For more information on event formats, see Event Formats. 

partition with (company of TwitterFeed) 
begin @info(name = 'query1') 
from TwitterFeed#window.time(1 min)
select company as company, sum(wordCount) as words 
having words > 10
insert into HighFrequentTweets;
end ;

Prerequisites

Set up the prerequisites required for all samples.

Building the sample

Start the WSO2 DAS server with the sample configuration numbered 0112. For instructions, see Starting sample CEP configurations.

This sample configuration creates the following.

• Two streams with the IDs HighFrequentTweets:1.0.0 and twitterFeed:1.0.0.

• An event receiver named WSO2EventReceiver.

• An event publisher named HighFrequentTweetsLogger  to log the received messages. 

• An execution plan named HighFrequentTweetsExecutionPlan.