PowerDale is a small town with around 100 residents. Most houses have a smart meter installed that can save and send information about how much power a house is drawing/using.
There are three major providers of energy in town that charge different amounts for the power they supply.
- Dr Evil's Dark Energy
- The Green Eco
- Power for Everyone
JOI Energy is a new start-up in the energy industry. Rather than selling energy they want to differentiate themselves from the market by recording their customers' energy usage from their smart meters and recommending the best supplier to meet their needs.
You have been placed into their development team, whose current goal is to produce an API which their customers and smart meters will interact with.
Unfortunately, two members of the team are on annual leave, and another one has called in sick! You are left with another ThoughtWorker to progress with the current user stories on the story wall. This is your chance to make an impact on the business, improve the code base and deliver value.
To trial the new JOI software 5 people from the JOI accounts team have agreed to test the service and share their energy data.
| User | Smart Meter ID | Power Supplier |
|---|---|---|
| Sarah | smart-meter-0 |
Dr Evil's Dark Energy |
| Peter | smart-meter-1 |
The Green Eco |
| Charlie | smart-meter-2 |
Dr Evil's Dark Energy |
| Andrea | smart-meter-3 |
Power for Everyone |
| Nemo | smart-meter-4 |
The Green Eco |
These values are used in the code and in the following examples too.
In Salesforce org, we'll store readings under Reading object.
Parameters
| Field | Description |
|---|---|
Client |
Owner of the smart meter |
Reading Time |
The date/time (as epoch) when the reading is taken |
Value |
The consumption in kW at the time of the reading |
Example readings
| Client | Reading Time | Value (kW) |
|---|---|---|
| Charlie | 2020-11-29 8:00 |
4.0503 |
| Charlie | 2020-11-29 9:00 |
3.0621 |
| Charlie | 2020-11-29 10:00 |
4.0222 |
| Charlie | 2020-11-29 11:00 |
2.0423 |
In the above example, the smart meter sampled readings, in kW, every hour. Note that the reading is in kW and not kWH, which means that each reading represents the consumption at the reading time. If no power is being consumed at the time of reading, then the reading value will be 0. Given that 0 may introduce new challenges, we can assume that there is always some consumption, and we will never have a 0 reading value. These readings are then sent by the smart meter to the application using REST. There is a service in the application that calculates the kWH from these readings
Parameters
| Parameter | Description |
|---|---|
clientId |
Id of the smart meter Owner |
Example PricePlans
| planId | planName | rate | cost |
|---|---|---|---|
| a0Z6F000010ZgA2UAK | price-plan-2 | 2.00 | 0.0275 |
| a0Z6F000010ZgA3UAK | price-plan-0 | 10.00 | 0.137 |
| a0Z6F000010ZgA1UAK | price-plan-1 | 1.00 | 0.013 |
Parameters
| Parameter | Description |
|---|---|
clientId |
Id of the smart meter Owner |
limit |
limit the number of plans to be displayed |
Example Recommended Price Plans
| planId | planName | rate | cost |
|---|---|---|---|
| a0Z6F000010ZgA1UAK | price-plan-1 | 1.00 | 0.013 |
| a0Z6F000010ZgA3UAK | price-plan-0 | 10.00 | 0.137 |
- Salesforce Extensions Documentation
- Salesforce CLI Setup this or this
- Salesforce DX Developer Guide
- Salesforce CLI Command Reference
- Scratch Org
- Development models.
Lets start by installing Salesforce CLI or upgrade to latest version (take a note of your node version compatibility)
npm install @salesforce/cli --global
Signup for a new Developer Trial Org. The form could act funny and wont provide any feedback on success or failure. Watch your email, it takes a while to receive the activation email with link
https://developer.salesforce.com/signup
- From Setup, enter Dev Hub in the Quick Find box, then select Dev Hub
- Click the toggle to "Enable Dev Hub"
Enable Org Shape for Scratch Orgs in the Dev Hub org that you use to create scratch orgs.
- Copy the org ID from Setup > Company Information.
- From Setup, enter Scratch Orgs in the Quick Find box, then select Scratch Orgs.
- Click the toggle for Enable Org Shape for Scratch Orgs.
- In the text box, enter the 15-character org ID for the Dev Hub, then click Save.
Start with cloning the repo, and then...
- Authenticate
sf org login web --alias JoyOfEnergy
Successfully authorized developer@thoughtworks.com with org ID 00DIS000000J6Zd2AK
- Create Scratch Org
sf org create scratch --definition-file config/project-scratch-def.json --alias JoyOfEnergyScratchOrg --set-default --target-dev-hub JoyOfEnergy
Warning: Record types defined in the scratch org definition file will stop being capitalized by default in a future release.
...
Your scratch org is ready.
- List Orgs: This will show your DevHub and Scratch orgs
sf org list
- Get Scratch Org Details (the scratch org UserName can be fetched from
org listororg create scratchcommand output). The output will provideInstance Url,UserNameandPasswordto log into Scratch Org
sf org display user --target-org test-whatever@example.com
Note: a password needs to be generated before first login sf org generate password --target-org test-whatever@example.com
- The first deploy would start the source tracking. All source in the package directories in the sfdx-project.json file is deployed to the scratch org
sf project deploy start
Deploying v51.0 metadata to test-whatever@example.com using the v60.0 SOAP API. Deploy ID: 0Af1m00000tNImVCAW Status: Succeeded | ████████████████████████████████████████ | 19/19 Components | Tracking: 21/21
- Import Accounts and Plan data in your Scratch Org (
data/Account.json)
sf data import tree --files data/Account.json --target-org JoyOfEnergyScratchOrg
=== Import Results
Reference ID Type ID
...
Now that your local workspace and DevHub Scratch org is ready, spend some time to look at the configurations and code. Will discuss the next adventure with this codebase when we meet. Looking forward...