gbaeke / cryptoapi

Simple REST API with goa for use with PowerApps

cryptoAPI

Simple example with goa plus build and run on Kubernetes

• Install latest Go (had issue with 1.7; went away with 1.9)
• Install goa with go get -u github.com/goadesign/goa/...
• Modify the design/design.go file using the goa dsl
• Code generation with: goagen bootstrap -d crypto\design
  • This creates a bunch of code plus a main.go & currencies.go
• Modify currencies.go with your implementation
  • See currencies.go for a simple retrieval of cryptocurrency info from coinmarketcap.com
• build with go build
  • static build for linux with CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' .
• build Docker image with docker build -t yourtag .
• push container to ACR
  • az acr login -name name-of-Azure-container-registry
  • docker push name-of-your-image
    • tag should be DNS-name-of-ACR/image-name
• create Kubernetes deployment
  • kubectl apply -f crypto.yaml
• expose service
  • kubectl expose deployment crypto --type LoadBalancer

Test the API

• use curl
• use the provided cli
  • in tool\crypto-cli do go build
  • run the cli with .\crypto-cli -H ip-or-host-of-API show currency currencies/neo