Deploy a go MSSQL API endpoint on SAP kyma

link ：https://developers.sap.com/tutorials/cp-kyma-api-mssql-golang.html

Local files ：C:\Code\referenceCode\SAP Kyma Tutorial examples \api-mssql-go

main.go

go Access to applications ：

dockerfile

The dockerfile Two phases are defined to construct docker Image file .

(1)In the first stage, a Go image is used. It copies the related content of the project into the image and builds the application.

(2)The built application is then copied into the Docker scratch image and exposed on port 8000. The scratch image is an empty image containing no other tools within it so obtaining a shell/bash session is not possible.

FROM scratchWORKDIR /appCOPY --from=builder /app/api-mssql-go /app/

If the above three lines are deleted , Yes, the final built docker The impact of mirror files is , The size will be larger than the size of the image file without annotation . The purpose of these three lines of code is , From an empty scratch The mirror starts to build , Only before go Mirror image /app/api-mssql-go Copy the folder to the new image app Catalog , So the size is greatly reduced .

apirule：

You can see from the above picture that , This GO MSSQL API endpoint, Support the addition, deletion, modification and query of orders .

Run locally go application ：

go run ./cmd/api/main.go

Local endpoint as follows ：

http://localhost:8000/orders

Read the order ：curl -i -H “Accept: application/json” -H “Content-Type: application/json” -X GET http://localhost:8000/orders

Create order ：curl --data “{“order_id”:“10000003”,“description”:“test from curl”}” http://localhost:8000/orders

Get into api-mssql-go Folder , structure docker Mirror image ：

docker build -t i042416/api-mssql-go -f docker/Dockerfile .

Upload the image ：
docker push <your-docker-id>/api-mssql-go

Local boot mirror ：

docker run -p 8000:8000  --name api-mssql-go \-e MYAPP_username="sa" \-e MYAPP_password="Yukon900" \-e MYAPP_database="DemoDB" \-e MYAPP_host="host.docker.internal" \-e MYAPP_port="1433" \-d <your-docker-id>/api-mssql-go:latest

Last , hold k8s All under the folder yaml file , Deploy to SAP Kyma that will do .