Add web server to dev image

cmd/runmqserver/webserver.go

@@ -0,0 +1,110 @@
+// +build mqdev
+
+/*
+© Copyright IBM Corporation 2018
+
+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 main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/ibm-messaging/mq-container/internal/command"
+)
+
+func startWebServer() error {
+	_, err := os.Stat("/opt/mqm/bin/strmqweb")
+	if err != nil && os.IsNotExist(err) {
+		log.Debug("Skipping web server, because it's not installed")
+		return nil
+	}
+	log.Println("Starting web server")
+	out, rc, err := command.RunAsMQM("strmqweb")
+	if err != nil {
+		log.Printf("Error %v starting web server: %v", rc, string(out))
+		return err
+	}
+	log.Println("Started web server")
+	return nil
+}
+
+func configureWebServer() error {
+	_, err := os.Stat("/opt/mqm/bin/strmqweb")
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	const webConfigDir string = "/etc/mqm/web"
+	_, err = os.Stat(webConfigDir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	uid, gid, err := lookupMQM()
+	if err != nil {
+		return err
+	}
+	const prefix string = "/etc/mqm/web"
+	err = filepath.Walk(prefix, func(from string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		to := fmt.Sprintf("/var/mqm/web%v", from[len(prefix):])
+		exists := true
+		_, err = os.Stat(to)
+		if err != nil {
+			if os.IsNotExist(err) {
+				exists = false
+			} else {
+				return err
+			}
+		}
+
+		if info.IsDir() {
+			if !exists {
+				err := os.MkdirAll(to, 0770)
+				if err != nil {
+					return err
+				}
+			}
+			log.Printf("Directory: %v --> %v", from, to)
+		} else {
+			if exists {
+				err := os.Remove(to)
+				if err != nil {
+					return err
+				}
+			}
+			// TODO: Permissions.  Can't rely on them being set in Dockerfile
+			err := os.Link(from, to)
+			if err != nil {
+				log.Debug(err)
+				return err
+			}
+			log.Printf("File: %v", from)
+		}
+		err = os.Chown(to, uid, gid)
+		if err != nil {
+			return err
+		}
+		return nil
+	})
+	return err
+}