feat: debug logging

Closes coop-cloud/organising#164.

pkg/app/app.go

@@ -8,6 +8,7 @@ import (
 	"coopcloud.tech/abra/pkg/client/stack"
 	"coopcloud.tech/abra/pkg/config"
 	apiclient "github.com/docker/docker/client"
+	"github.com/sirupsen/logrus"
 )
 
 // Get retrieves an app
@@ -22,6 +23,8 @@ func Get(appName string) (config.App, error) {
 		return config.App{}, err
 	}
 
+	logrus.Debugf("retrieved '%s' for '%s'", app, appName)
+
 	return app, nil
 }
 
@@ -51,6 +54,14 @@ func DeployedVersions(ctx context.Context, cl *apiclient.Client, app config.App)
 		}
 	}
 
+	deployed := len(services) > 0
+
+	if deployed {
+		logrus.Debugf("detected '%s' as deployed versions of '%s'", appSpec, app.Name)
+	} else {
+		logrus.Debugf("detected '%s' as not deployed", app.Name)
+	}
+
 	return appSpec, len(services) > 0, nil
 }
 
@@ -58,11 +69,17 @@ func DeployedVersions(ctx context.Context, cl *apiclient.Client, app config.App)
 func ParseVersionLabel(label string) (string, string) {
 	// versions may look like v4.2-abcd or v4.2-alpine-abcd
 	idx := strings.LastIndex(label, "-")
-	return label[:idx], label[idx+1:]
+	version := label[:idx]
+	digest := label[idx+1:]
+	logrus.Debugf("parsed '%s' as version from '%s'", version, label)
+	logrus.Debugf("parsed '%s' as digest from '%s'", digest, label)
+	return version, digest
 }
 
 // ParseVersionName parses a $STACK_NAME_$SERVICE_NAME service label.
 func ParseServiceName(label string) string {
 	idx := strings.LastIndex(label, "_")
-	return label[idx+1:]
+	serviceName := label[idx+1:]
+	logrus.Debugf("parsed '%s' as service name from '%s'", serviceName, label)
+	return serviceName
 }