ReportStream SFTP

Requirements

Go installed on your machine

A Note on File Encoding

As of October 2024, we are only connecting to CADPH. Their SFTP site uses ISO 8859-1 encoding, which must be converted to UTF-8 before sending to ReportStream or special characters will be garbled. Before we can connect with any partners who use another encoding, we'll need to make encoding conversion configurable.

Using and Running

To run the application use the below command

cd ./src/
go run ./cmd/

We also have other build/lint/test commands listed in makefile. You can run these in your terminal using the syntax: make (step name)

make vet

Development

Additional Requirements

The additional requirements needed to contribute towards development are...

• Pre-Commit

• Detect-Secrets

• Terraform

• Docker

• Azurite

• Microsoft Azure Storage Explorer - needed for local manual testing

Compiling

make compile

Compiles the binary to the root of the project

Pre-Commit Hooks

We use pre-commit to run some hooks on every commit. These hooks do linting to ensure things are in a good spot before a commit is made. Please install pre-commit and then install the hooks.

pre-commit install

Running locally

Run docker-compose, which will spin up an Azurite container, an SFTP service, the Azure Function that triggers polling, and the app. By default, this leaves the ReportStream URL prefix environment variable empty, and we'll use a mock response rather than calling ReportStream. Uncomment the REPORT_STREAM_URL_PREFIX in docker-compose.yml to call locally-running ReportStream instead.

Testing

Unit Tests

make unitTests

To update which files are excluded from the test coverage report update the codeCoverageFilter.shscript.

Manual local testing

In the cloud, EventGrid monitors the blob storage container and sends file creation events to our queue for the app to read. In the local Azurite tool, there are no events to connect the blob storage container to the queue. To mimic the deployed behavior so our app can read queue messages and access the file specified in the message:

1. Upload a file to your local Azurite sftp container
2. In Azure Storage Explorer, find the message-import-queue that the service currently reads from
3. Add a file create event message to that queue. You can start with this base message and edit the subject to match your newly-created file

   {
   "topic": "/subscriptions/52203171-a2ed-4f6c-b5cf-9b368c43f15b/resourceGroups/csels-rsti-internal-moderate-rg/providers/Microsoft.Storage/storageAccounts/cdcrssftpinternal",
   "subject": "/blobServices/default/containers/sftp/blobs/import/order_message.hl7",
   "eventType": "Microsoft.Storage.BlobCreated",
   "id": "dac45448-001e-0031-7649-b8ad2c06c977",
   "data": {
   "api": "PutBlob",
   "clientRequestId": "d621de4c-d460-4af1-85f9-126d06328012",
   "requestId": "dac45448-001e-0031-7649-b8ad2c000000",
   "eTag": "0x8DC8660D8D1AE8B",
   "contentType": "application/octet-stream",
   "contentLength": 1122,
   "blobType": "BlockBlob",
   "url": "http://127.0.0.1:12000/devstoreaccount1/sftp/import/order_message.hl7",
   "sequencer": "00000000000000000000000000024DA1000000000006ab03",
   "storageDiagnostics": {
   "batchId": "6677b768-3006-0093-0049-b89735000000"
           }
       },
   "dataVersion": "",
   "metadataVersion": "1",
   "eventTime": "2024-06-06T19:42:49.2380563Z"
   }

4. The app should now read this message and attempt to process it

For the external SFTP call, we've set up a file in docker-compose that's copied to the local SFTP server. The service then copies it to local Azurite. You can add additional files by placing them in localdata/data/sftp before running docker-compose.

As of 7/3/24, when we copy a file from the local SFTP server, we try to unzip it (using the password in mock_credentials/mock_ca_dph_zip_password.txt if it's protected). We then place the unzipped files into the import folder, and if there are any errors, we upload an error file for the zip. If the original file is not a zip, we just copy it into the import folder.

Manual Cloud Testing

Upload to Our Azure Container

To trigger file ingestion in a deployed environment, go to the cdcrssftp{env} storage account in the Azure Portal. In the sftp container, upload a file to an import folder. If that folder doesn't already exist, you can create it by going to Upload, expanding Advanced, and putting import in the Upload to folder box! upload_file.png

Upload to SFTP Server

Log into CA's SFTP staging environment and drop a file into the OUTPUT folder. You can either wait for one of our lower environments to trigger, or you can manually trigger the Azure function from the Azure Portal.

The credentials and domain name for CA's SFTP environment can be found in Keybase under CA Info.

To manually trigger the Azure function...

1. If this is in an Azure Entra domain environment, you will need to log in as your -SU account.
2. Go to the polling-function-{env} function app in the Azure Portal.
3. Navigate to the CORS section, and add https://portal.azure.com as an allowed origin. Click save.
4. Navigate back to the Overview section, and click on the trigger function.
5. Click on the Test/Run button, and then click on the Run button that pops-up.

End-to-end Tests

Load Testing

Deploying

Environments

Internal

The Internal environment is meant to be the Wild West. Meaning anyone can push to it to test something, and there is no requirement that only good builds be pushed to it. Use the Internal environment if you want to test something in a deployed environment in a non-CDC Azure Entra domain and subscription.

To deploy to the Internal environment...

1. Check with the team that no one is already using it.
2. Find the internal branch and delete it in GitHub.
3. Delete your local internal branch if needed.

   git branch -D internal

4. From the branch you want to test, create a new internal branch.

   git checkout -b internal

5. Push the branch to GitHub.

   git push --set-upstream origin internal

Then the deploy will run. Remember that you now have the internal branch checked out locally. If you make subsequent code changes, you will make them on the internal branch instead of your original branch.

Dev

The Dev environment is similar to the Internal environment but deploys to a CDC Azure Entra domain and subscription. It is also meant to be the Wild West. Dev deploys similarly to the Internal environment, but you interact with the dev branch.

Staging

The Staging environment is production-like and meant to be stable. It deploys to a CDC Azure Entra domain and subscription. Deployments occur when a commit is made to the main branch. main is a protected branch and requires PR reviews before merge.

Prod

The Production environment is the real deal. It deploys to a CDC Azure Entra domain and subscription. Deployments occur when a release is published.

Secrets

See SECRETS.md for a description of our secrets.

Related documents

• Azure Functions and Typescript
• Open Practices
• Rules of Behavior
• Thanks and Acknowledgements
• Disclaimer
• Contribution Notice
• Code of Conduct

CDC Notices

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