Name: openwhisk-package-rss
Owner: IBM jStart
Description: RSS feed package
Forked from: apache/incubator-openwhisk-package-rss
Created: 2016-07-25 20:58:50.0
Updated: 2016-07-25 21:05:32.0
Pushed: 2016-08-12 14:58:15.0
Homepage: null
Size: 279
Language: JavaScript
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========================== This package allows users to subscribe to RSS/ATOM feeds and receive events when a new feed item is available. It creates one event/activation per feed item that meets the criteria.
whisk-package-rss/
actions
??? app.js
CONTRIBUTING.md
images
feeds
??? feed.js
install.sh
LICENSE.txt
README.md
tests
??? src
??? RssTests.scala
tools
??? travis
??? build.sh
rssEventProvider
??? app.js
|__ manifest.yml
|__ package.json
uninstall.sh
To use this trigger feed, you need to pass the required parameters (refer to the table below)
wsk trigger create rss_trigger --feed /namespace/package/feed_name -p url 'url_to_rss' -p pollingInterval 'timePeriod'
e.g.
wsk trigger create rss_trigger --feed /guest/rss/rss_feed -p url 'http://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml' -p pollingInterval '2h'
Accepted polling interval formats: 2 days, 1d, 10h, 2.5hrs, 2h, 1m, 5s
Follow the instructions at https://new-console.ng.bluemix.net/openwhisk/cli
Create a CouchDB/Cloudant instance called ow_triggers and the following database:
This database will hold all of the registered triggers with the RSS sources. A potential database service that could be used is the Bluemix Cloudant service.
In order to support the openwhisk package, there needs to be an event generating service that fires a trigger in the openwhisk environment. This service polls an RSS/ATOM source and applies logic to determine whether a feed item should be delivered to the openwhisk rss package. It internally uses a CouchDB database to persist the triggers' information. You will need to initialized the DB prior to using this service. The event provider service keeps a registry of triggers. When a trigger is initially created, the service fires events for RSS feed items which are published within pollingInterval from now.
There are two options to deploy the service:
This service can be hosted as a cf app on CloudFoundry. To deploy on IBM Bluemix:
cf push
This service can be ran as a node app on your local machine. To run it use the following command:
node app.js CLOUDANT_USERNAME CLOUDANT_PASSWORD OPENWHISK_AUTH_KEY
Note: Local deployment of this service requires extra configuration if it's to be run with the Bluemix OpenWhisk.
./install.sh openwhisk.ng.bluemix.net $AUTH_KEY wsk $PROVIDER_ENDPOINT
./uninstall.sh openwhisk.ng.bluemix.net $AUTH_KEY wsk
where:
wsk property get
to obtain it).Local installation requires running the OpenWhisk environment locally prior to installing the package. To run OpenWhisk locally follow the instructions at https://github.com/openwhisk/openwhisk/blob/master/tools/vagrant/README.md.
./install.sh $EDGE_HOST $AUTH_KEY $WSK_CLI $PROVIDER_ENDPOINT
./uninstall.sh $EDGE_HOST $AUTH_KEY $WSK_CLI
where :
wsk property get
to obtain it).This will create a new package called rss as well as feed action within the package.
| Entity | Type | Parameters | Description |
| — | — | — | — |
| /namespace/rss
| package | - | Openwhisk Package Template |
| /namespace/rss/rss_feed.js
| feed | details | Feed to provide events when a new rss item is available |
| Parameter | Type | Required | Description| Options | Default | Example | | ————- | —- | ——– | ———— | ——- | ——- |——- | | url | string | yes | Url to RSS feed | - | - | “http://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml” | | pollingInterval | string | yes | Interval at which polling is performed | - | - | “2h” | | filter | string | no | Comma separted list of keywords to filter on| - | - | “Washington D.C.,capital” |
Note: If the filter parameter enables logic that only searches for matches in the feed items' titles and descriptions. If 60% or more of the keywords are found in the RSS feed item, an event will be fired for the feed item. For example, given that filter “Washington D.C.,capital,politics”, an event will be fired only if 2 of the 3 keywords are present in the feed item.
Executing test case locally:
openwhisk/tests/src/packages
vagrant ssh
to your local vagrant environmentgradle :tests:test --tests "packages.CLASS_NAME
To execute all tests, run gradle :tests:test
Please refer to CONTRIBUTING.md
Copyright 2015-2016 IBM Corporation
Licensed under the Apache License, Version 2.0 (the “License”).
Unless required by applicable law or agreed to in writing, software distributed under the license is distributed on an “as is” basis, without warranties or conditions of any kind, either express or implied. See the license for the specific language governing permissions and limitations under the license.