Move some packages to pkg directory

pkg/containerruntimelogger/logruntime.go

@@ -0,0 +1,103 @@
+/*
+© Copyright IBM Corporation 2017, 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 containerruntimelogger
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"strings"
+
+	"github.com/ibm-messaging/mq-container/internal/containerruntime"
+	"github.com/ibm-messaging/mq-container/internal/user"
+	"github.com/ibm-messaging/mq-container/pkg/logger"
+)
+
+// LogContainerDetails logs details about the container runtime
+func LogContainerDetails(log *logger.Logger) error {
+	if runtime.GOOS != "linux" {
+		return fmt.Errorf("Unsupported platform: %v", runtime.GOOS)
+	}
+	log.Printf("CPU architecture: %v", runtime.GOARCH)
+	kv, err := containerruntime.GetKernelVersion()
+	if err == nil {
+		log.Printf("Linux kernel version: %v", kv)
+	}
+	cr, err := containerruntime.GetContainerRuntime()
+	if err == nil {
+		log.Printf("Container runtime: %v", cr)
+	}
+	bi, err := containerruntime.GetBaseImage()
+	if err == nil {
+		log.Printf("Base image: %v", bi)
+	}
+	u, err := user.GetUser()
+	if err == nil {
+		if len(u.SupplementalGID) == 0 {
+			log.Printf("Running as user ID %v (%v) with primary group %v", u.UID, u.Name, u.PrimaryGID)
+		} else {
+			log.Printf("Running as user ID %v (%v) with primary group %v, and supplementary groups %v", u.UID, u.Name, u.PrimaryGID, strings.Join(u.SupplementalGID, ","))
+		}
+	}
+	caps, err := containerruntime.GetCapabilities()
+	capLogged := false
+	if err == nil {
+		for k, v := range caps {
+			if len(v) > 0 {
+				log.Printf("Capabilities (%s set): %v", strings.ToLower(k), strings.Join(v, ","))
+				capLogged = true
+			}
+		}
+		if !capLogged {
+			log.Print("Capabilities: none")
+		}
+	} else {
+		log.Errorf("Error getting capabilities: %v", err)
+	}
+	sc, err := containerruntime.GetSeccomp()
+	if err == nil {
+		log.Printf("seccomp enforcing mode: %v", sc)
+	}
+	log.Printf("Process security attributes: %v", containerruntime.GetSecurityAttributes())
+	m, err := containerruntime.GetMounts()
+	if err == nil {
+		if len(m) == 0 {
+			log.Print("No volume detected. Persistent messages may be lost")
+		} else {
+			for mountPoint, fsType := range m {
+				log.Printf("Detected '%v' volume mounted to %v", fsType, mountPoint)
+				if !containerruntime.SupportedFilesystem(fsType) {
+					return fmt.Errorf("%v uses unsupported filesystem type: %v", mountPoint, fsType)
+				}
+			}
+		}
+	}
+	// For a multi-instance queue manager - check all required mounts exist & validate filesystem type
+	if os.Getenv("MQ_MULTI_INSTANCE") == "true" {
+		log.Println("Multi-instance queue manager: enabled")
+		reqMounts := []string{"/mnt/mqm", "/mnt/mqm-log", "/mnt/mqm-data"}
+		for _, mountPoint := range reqMounts {
+			if fsType, ok := m[mountPoint]; ok {
+				if !containerruntime.ValidMultiInstanceFilesystem(fsType) {
+					return fmt.Errorf("%v uses filesystem type '%v' which is invalid for a multi-instance queue manager", mountPoint, fsType)
+				}
+			} else {
+				return fmt.Errorf("Missing required mount '%v' for a multi-instance queue manager", mountPoint)
+			}
+		}
+	}
+	return nil
+}