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Twitter functional apps

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* Streaming source
* Add twitter search and messasge sources
* Add more twitter source, sink and processors
* Add IT tests for twitter update sink
* Add IT tests for twitter message sink
* Add IT tests for twitter trend processor
* twitter suppliers readme
* twitter consumers readme
* twitter functions readme
* Disable TwitterStreamSourceTests
This commit is contained in:
Christian Tzolov
2020-06-18 16:09:56 +02:00
committed by Soby Chacko
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commit 873f17414e
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functions/function/twitter-function/README.adoc Normal file
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# Twitter Functions
This module provides couple of twitter functions that can be reused and composed in other applications.
## Twitter Trend Function
Functions can return either Trends topics or the Locations of the trending topics. The `twitter.trend.trend-query-type` property allows choosing between both types.
* Trends - `twitter.trend.trend-query-type` is set to `trend`. Leverages the https://developer.twitter.com/en/docs/trends/trends-for-location/api-reference/get-trends-place[Trends API] to return the https://help.twitter.com/en/using-twitter/twitter-trending-faqs[trending topics] near a specific latitude, longitude location.
* Trend Locations - the `twitter.trend.trend-query-type` is set `trendLocation`. Retrieve a full or nearby locations list of trending topics by location. If the `latitude`, `longitude` parameters are NOT provided the processor performs the https://developer.twitter.com/en/docs/trends/locations-with-trending-topics/api-reference/get-trends-available[Trends Available API] and returns the locations that Twitter has trending topic information for.
If the `latitude`, `longitude` parameters are provided the processor performs the https://developer.twitter.com/en/docs/trends/locations-with-trending-topics/api-reference/get-trends-closest[Trends Closest API] and returns the locations that Twitter has trending topic information for, closest to a specified location.
Response is an array of `locations` that encode the location's WOEID and some other human-readable information such as a canonical name and country the location belongs in.
### Beans for injection
You can import the `TwitterTrendFunctionConfiguration` in a Spring Boot application and then inject the following bean.
`filterFunction`
You can use `Function<Message<?>, Message<byte[]>> trendOrTrendLocationsFunction` as a qualifier when injecting.
Once injected, you can use the `apply` method of the `Function` to invoke it and get the result.
### Configuration Options
### Other usage