Add license check. Fixes #673

Author: plorenz

.github/workflows/main.yml

@@ -30,4 +30,5 @@ jobs:
           go test ./...
           go test -C example ./...
           go install ./...
+          ./license-check.sh
           $(go env GOPATH)/bin/ziti-ci verify-version $($(go env GOPATH)/bin/sdk-version)

expected.licenses

@@ -0,0 +1,6 @@
+Apache-2.0
+BSD-2-Clause
+BSD-2-Clause-FreeBSD
+BSD-3-Clause
+MIT
+Unlicense

license-check.sh

@@ -0,0 +1,11 @@
+printf "Installing go-licenses"
+go install github.com/google/go-licenses@latest
+
+printf "\nGenerating license report"
+$(go env GOPATH)/bin/go-licenses report ./... > /tmp/sdk.licenses
+
+printf "\nGenerating set of unique licenses"
+cat /tmp/sdk.licenses | cut -d ',' -f 3 | sort | uniq > /tmp/sdk.licenses.unique
+
+printf "\nChecking Licenses\n"
+diff expected.licenses /tmp/sdk.licenses.unique