Add version information (#126)

This allows us to use build version information to help debug
issues.

Dockerfile

@@ -18,6 +18,7 @@ COPY cloud/ cloud/
 COPY exp/ exp/
 COPY feature/ feature/
 COPY vendor/ vendor/
+COPY version/ version/
 
 # Build
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -ldflags "${LDFLAGS} -extldflags '-static'"  -o manager ${package}

cloud/scope/clients.go

@@ -17,6 +17,7 @@ limitations under the License.
 package scope
 
 import (
+	"net/http"
 	"sync"
 
 	"github.com/go-logr/logr"
@@ -25,6 +26,7 @@ import (
 	identityClient "github.com/oracle/cluster-api-provider-oci/cloud/services/identity"
 	nlb "github.com/oracle/cluster-api-provider-oci/cloud/services/networkloadbalancer"
 	"github.com/oracle/cluster-api-provider-oci/cloud/services/vcn"
+	"github.com/oracle/cluster-api-provider-oci/version"
 	"github.com/oracle/oci-go-sdk/v63/common"
 	"github.com/oracle/oci-go-sdk/v63/core"
 	"github.com/oracle/oci-go-sdk/v63/identity"
@@ -120,6 +122,7 @@ func createVncClient(region string, ociAuthConfigProvider common.ConfigurationPr
 		return nil, err
 	}
 	vcnClient.SetRegion(region)
+	vcnClient.Interceptor = setVersionHeader()
 
 	return &vcnClient, nil
 }
@@ -131,6 +134,7 @@ func createLbClient(region string, ociAuthConfigProvider common.ConfigurationPro
 		return nil, err
 	}
 	lbClient.SetRegion(region)
+	lbClient.Interceptor = setVersionHeader()
 
 	return &lbClient, nil
 }
@@ -142,6 +146,7 @@ func createIdentityClient(region string, ociAuthConfigProvider common.Configurat
 		return nil, err
 	}
 	identityClient.SetRegion(region)
+	identityClient.Interceptor = setVersionHeader()
 
 	return &identityClient, nil
 }
@@ -153,6 +158,7 @@ func createComputeClient(region string, ociAuthConfigProvider common.Configurati
 		return nil, err
 	}
 	computeClient.SetRegion(region)
+	computeClient.Interceptor = setVersionHeader()
 
 	return &computeClient, nil
 }
@@ -164,6 +170,14 @@ func createComputeManagementClient(region string, ociAuthConfigProvider common.C
 		return nil, err
 	}
 	computeManagementClient.SetRegion(region)
+	computeManagementClient.Interceptor = setVersionHeader()
 
 	return &computeManagementClient, nil
 }
+
+func setVersionHeader() func(request *http.Request) error {
+	return func(request *http.Request) error {
+		request.Header.Set("X-CAPOCI-VERSION", version.GitVersion)
+		return nil
+	}
+}

hack/version.sh

@@ -74,13 +74,13 @@ version::ldflags() {
         )
     }
 
-    add_ldflag "buildDate" "$(date ${SOURCE_DATE_EPOCH:+"--date=@${SOURCE_DATE_EPOCH}"} -u +'%Y-%m-%dT%H:%M:%SZ')"
-    add_ldflag "gitCommit" "${GIT_COMMIT}"
-    add_ldflag "gitTreeState" "${GIT_TREE_STATE}"
-    add_ldflag "gitMajor" "${GIT_MAJOR}"
-    add_ldflag "gitMinor" "${GIT_MINOR}"
-    add_ldflag "gitVersion" "${GIT_VERSION}"
-    add_ldflag "gitReleaseCommit" "${GIT_RELEASE_COMMIT}"
+    add_ldflag "BuildDate" "$(date ${SOURCE_DATE_EPOCH:+"--date=@${SOURCE_DATE_EPOCH}"} -u +'%Y-%m-%dT%H:%M:%SZ')"
+    add_ldflag "GitCommit" "${GIT_COMMIT}"
+    add_ldflag "GitTreeState" "${GIT_TREE_STATE}"
+    add_ldflag "GitMajor" "${GIT_MAJOR}"
+    add_ldflag "GitMinor" "${GIT_MINOR}"
+    add_ldflag "GitVersion" "${GIT_VERSION}"
+    add_ldflag "GitReleaseCommit" "${GIT_RELEASE_COMMIT}"
 
   # The -ldflags parameter takes a single string, so join the output.
   echo "${ldflags[*]-}"

main.go

@@ -27,6 +27,7 @@ import (
 	expV1Beta1 "github.com/oracle/cluster-api-provider-oci/exp/api/v1beta1"
 	expcontrollers "github.com/oracle/cluster-api-provider-oci/exp/controllers"
 	"github.com/oracle/cluster-api-provider-oci/feature"
+	"github.com/oracle/cluster-api-provider-oci/version"
 	"github.com/spf13/pflag"
 	"k8s.io/apimachinery/pkg/runtime"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
@@ -131,6 +132,7 @@ func main() {
 		os.Exit(1)
 	}
 
+	setupLog.Info("CAPOCI Version", "version", version.GitVersion)
 	ociAuthConfigProvider, err := config.NewConfigurationProvider(authConfig)
 	if err != nil {
 		setupLog.Error(err, "authentication provider could not be initialised")

version/version.go

@@ -0,0 +1,29 @@
+package version
+
+// BuildDate is the flag that gets set at build time
+// Set by go build -ldflags "-X" flag
+var BuildDate string
+
+// GitCommit is the flag that gets set at build time
+// Set by go build -ldflags "-X" flag
+var GitCommit string
+
+// GitTreeState is the flag that gets set at build time
+// Set by go build -ldflags "-X" flag
+var GitTreeState string
+
+// GitMajor is the flag that gets set at build time
+// Set by go build -ldflags "-X" flag
+var GitMajor string
+
+// GitMinor is the flag that gets set at build time
+// Set by go build -ldflags "-X" flag
+var GitMinor string
+
+// GitVersion is the flag that gets set to the git version at build time
+// Set by go build -ldflags "-X" flag
+var GitVersion = "development"
+
+// GitReleaseCommit is the flag that gets set at build time
+// Set by go build -ldflags "-X" flag
+var GitReleaseCommit string