TwitterBot for IBM Cloud Code Engine

Some fun and experiments with Golang, Twitter and IBM Cloud Code Engine. Tweet at schedule with the message composed of latest IBM Cloud blog entries.

Read more:

• cron-like scheduling on IBM Cloud
• The Time for Events: Cron-like Jobs in the Cloud
• Serverless Twitter Bot using IBM Cloud

(Rough) Instructions

1. Set up a Code Engine (CE) project.
2. Add access to a container registry in Code Engine.
3. Configure a local file .env with credentials / secrets. Check .env.template for a template.
4. Create a secret from file.
5. Build the container image, either in CE or using the Container Registry
6. Create the CE app from the image and pass the configured secrets / credentials.
7. Set up the CE cron subscription and pass the secret key, e.g.,

   ibmcloud ce sub cron create -n tweety --destination twitterbot --path /tweet
       --schedule '07 4,8,13,17 * * *' --data 'SECRET_KEY=SET_YOUR_SECRET' --ct 'application/x-www-form-urlencoded'
   

   or

   ibmcloud ce sub cron create -n tweety --destination twitterbot --path /tweet --data
    '{"secret_key":"SET_YOUR_SECRET","tweet_string2":"Written in #Golang by @data_henrik and running on #IBMCloud #CodeEngine", "item_range":10}' 
    --content-type 'application/json' --schedule '07 9,17 * * *'
   

Local testing

1. configure .env
2. go run twitterBot.go
3. curl -X POST localhost:8080/tweet -H "Content-Type: application/json" --data '{"secret_key":"SET_YOUR_SECRET", "feed":"https://blog.4loeser.net/feeds/posts/default","tweet_string1":"@data_henrik recently wrote about %s. The #blog post is available at %s. "}