Merge CIP code

internal/mqtemplate/mqtemplate.go

@@ -0,0 +1,81 @@
+/*
+© Copyright IBM Corporation 2018, 2019
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package mqtemplate contains code to process template files
+package mqtemplate
+
+import (
+	"os"
+	"path"
+	"text/template"
+
+	"github.com/ibm-messaging/mq-container/internal/command"
+	"github.com/ibm-messaging/mq-container/internal/logger"
+)
+
+// ProcessTemplateFile takes a Go templateFile, and processes it with the
+// supplied data, writing to destFile
+func ProcessTemplateFile(templateFile, destFile string, data interface{}, log *logger.Logger) error {
+	// Re-configure channel if app password not set
+	t, err := template.ParseFiles(templateFile)
+	if err != nil {
+		log.Error(err)
+		return err
+	}
+	dir := path.Dir(destFile)
+	_, err = os.Stat(dir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			// #nosec G301
+			err = os.MkdirAll(dir, 0770)
+			if err != nil {
+				log.Error(err)
+				return err
+			}
+			mqmUID, mqmGID, err := command.LookupMQM()
+			if err != nil {
+				log.Error(err)
+				return err
+			}
+			err = os.Chown(dir, mqmUID, mqmGID)
+			if err != nil {
+				log.Error(err)
+				return err
+			}
+		} else {
+			return err
+		}
+	}
+	// #nosec G302
+	f, err := os.OpenFile(destFile, os.O_CREATE|os.O_WRONLY, 0660)
+	defer f.Close()
+	err = t.Execute(f, data)
+	if err != nil {
+		log.Error(err)
+		return err
+	}
+	mqmUID, mqmGID, err := command.LookupMQM()
+	if err != nil {
+		log.Error(err)
+		return err
+	}
+	err = os.Chown(destFile, mqmUID, mqmGID)
+	if err != nil {
+		log.Error(err)
+		return err
+	}
+	return nil
+}