TODO app with Golang functions and Redis

Switch to correct context

• fn use context <your context name>
• fn ls apps

Create an application

fn create app --annotation oracle.com/oci/subnetIds='[<SUBNET_OCID(s)>]' --config REDIS_HOST=your-redis-ip --config REDIS_PORT=your-redis-port todoapp

To point to a different Redis instance...

... execute below commands to update the app configuration

fn config app todoapp REDIS_HOST your-redis-ip and fn config app todoapp REDIS_PORT your-redis-port

To deploy your functions...

Clone this repository and change into the directory - cd fn-redis-todoapp

To deploy all the functions in one go - fn -v deploy --app todoapp --all

You can choose to deploy one function at a time. You can do so by changing into the function directory and invoking the fn deploy command. For e.g. to deploy the create todo function - cd create and then deploy with fn -v deploy --app todoapp

Once the functions have been deployed, you can test out the CRUD capabilities

Create TODOs

• echo -n 'do this' | fn invoke todoapp createtodo

Expected response - {"Status":"SUCCESS","Message":"Created TODO with ID 1", "Todoid":"1"}

• echo -n 'do that' | fn invoke todoapp createtodo

check TODOs

Use Redis in Docker (or install redis-cli locally) - docker run --rm redis redis-cli -h 129.213.91.171 -p 6379 hgetall todo:1 (repeat same for other TODOs with Ids 2 and so on....)

You should see

todoid
2
title
do that
completed
false

Get TODOs

get all TODOs

fn invoke todoapp gettodos

You should see JSON output

[
  {
    "Todoid": "2",
    "Title": "do that",
    "Completed": "false"
  },
  {
    "Todoid": "1",
    "Title": "do this",
    "Completed": "false"
  }
]

get completed TODOs

echo -n 'completed' | fn invoke todoapp gettodos

You will get an empty [] array since all the TODOs are pending (see next)

Check in Redis docker run --rm redis redis-cli -h 129.213.91.171 -p 6379 lrange todos:completed 0 10

Expect an empty reply

get pending TODOs

echo -n 'pending' | fn invoke todoapp gettodos

You should see JSON output

[
  {
    "Todoid": "2",
    "Title": "do that",
    "Completed": "false"
  },
  {
    "Todoid": "1",
    "Title": "do this",
    "Completed": "false"
  }
]

Check in Redis docker run --rm redis redis-cli -h 129.213.91.171 -p 6379 lrange todos:pending 0 10

1
2

Toggle TODO (complete or pending)

mark completed

echo -n '{"todoid": "1", "completed":"true"}' | fn invoke todoapp toggletodo

Expected response - {"Status":"SUCCESS","Message":"Toggled TODO with ID 1 to true"}

it should show up in completed list - echo -n 'completed' | fn invoke todoapp gettodos

[
  {
    "Todoid": "1",
    "Title": "do this",
    "Completed": "true"
  }
]

it should NOT show up in pending list - echo -n 'pending' | fn invoke todoapp gettodos

[
  {
    "Todoid": "2",
    "Title": "do that",
    "Completed": "false"
  }
]

Check in Redis docker run --rm redis redis-cli -h 129.213.91.171 -p 6379 lrange todos:completed 0 10

1

Check in Redis docker run --rm redis redis-cli -h 129.213.91.171 -p 6379 lrange todos:pending 0 10

2

Responses will be in-line with above results

mark pending

echo -n '{"todoid": "1", "completed":"false"}' | fn invoke todoapp toggletodo

Expected response - {"Status":"SUCCESS","Message":"Toggled TODO with ID 1 to false"}

it should NOT show up in completed list - echo -n 'completed' | fn invoke todoapp gettodos

it should show up in pending list - echo -n 'pending' | fn invoke todoapp gettodos

[
  {
    "Todoid": "2",
    "Title": "do that",
    "Completed": "false"
  },
  {
    "Todoid": "1",
    "Title": "do this",
    "Completed": "false"
  }
]

Edit TODO function (update title)

echo -n '{"todoid": "2", "title":"new title"}' | fn invoke todoapp edittodo

Expected response {"Status":"SUCCESS","Message":"Updated title for TODO 2"}

Confirm - fn invoke todoapp gettodos

JSON response with updated title for TODO

[
  {
    "Todoid": "2",
    "Title": "new title",
    "Completed": "false"
  },
  {
    "Todoid": "1",
    "Title": "do this",
    "Completed": "false"
  }
]

Delete TODO function

echo -n '1' | fn invoke todoapp deletetodo

Response {"Status":"SUCCESS","Message":"Deleted TODO 1"}

Confirm - fn invoke todoapp gettodos

JSON reponse with TODO 1 removed

[
  {
    "Todoid": "2",
    "Title": "new title",
    "Completed": "false"
  }
]