3 files changed, 19 insertions, 2 deletions
diff --git a/client/go/cmd/deploy.go b/client/go/cmd/deploy.go
index e72667e49b6..012570c5471 100644
--- a/client/go/cmd/deploy.go
+++ b/client/go/cmd/deploy.go
@@ -132,6 +132,7 @@ func newPrepareCmd(cli *CLI) *cobra.Command {
 				return fmt.Errorf("could not write session id: %w", err)
 			}
 			cli.printSuccess("Prepared ", color.CyanString(pkg.Path), " with session ", result.ID)
+			printPrepareLog(cli.Stderr, result)
 			return nil
 		},
 	}
diff --git a/client/go/cmd/deploy_test.go b/client/go/cmd/deploy_test.go
index fe3e0ca0467..236ae74f47e 100644
--- a/client/go/cmd/deploy_test.go
+++ b/client/go/cmd/deploy_test.go
@@ -121,7 +121,7 @@ func assertDeploy(applicationPackage string, arguments []string, t *testing.T) {
 func assertPrepare(applicationPackage string, arguments []string, t *testing.T) {
 	t.Helper()
 	client := &mock.HTTPClient{}
-	client.NextResponseString(200, `{"session-id":"42"}`)
+	client.NextResponseString(200, `{"session-id":"42","message":"Session 42 for tenant 'default' prepared.","log":[{"level":"WARNING","message":"Warning message 1","time": 1430134091319}]}`)
 	cli, stdout, _ := newTestCLI(t)
 	cli.httpClient = client
 	assert.Nil(t, cli.Run(arguments...))
diff --git a/client/go/vespa/deploy.go b/client/go/vespa/deploy.go
index ad4fc5f3022..0e086979d72 100644
--- a/client/go/vespa/deploy.go
+++ b/client/go/vespa/deploy.go
@@ -143,7 +143,23 @@ func Prepare(deployment DeploymentOptions) (PrepareResult, error) {
 	if err := checkResponse(req, response, serviceDescription); err != nil {
 		return PrepareResult{}, err
 	}
-	return result, nil
+	var jsonResponse struct {
+		SessionID string                   `json:"session-id"`
+		Log       []LogLinePrepareResponse `json:"log"`
+	}
+	jsonDec := json.NewDecoder(response.Body)
+	if err := jsonDec.Decode(&jsonResponse); err != nil {
+		return PrepareResult{}, err
+	}
+	var id int64
+	id, err = strconv.ParseInt(jsonResponse.SessionID, 10, 64)
+	if err != nil {
+		return PrepareResult{}, err
+	}
+	return PrepareResult{
+		ID:       id,
+		LogLines: jsonResponse.Log,
+	}, err
 }
 
 // Activate deployment with sessionID from a past prepare