github.com/sealerio/sealer@v0.11.1-0.20240507115618-f4f89c5853ae/pkg/runtime/utils.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package runtime
    16  
    17  import (
    18  	"encoding/json"
    19  	"fmt"
    20  	"net"
    21  	"os"
    22  	"path/filepath"
    23  	"strings"
    24  
    25  	ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
    26  	"github.com/sealerio/sealer/common"
    27  	osi "github.com/sealerio/sealer/utils/os"
    28  )
    29  
    30  // Deprecated
    31  type Metadata struct {
    32  	Version string `json:"version"`
    33  	Arch    string `json:"arch"`
    34  	Variant string `json:"variant"`
    35  	// KubeVersion is a SemVer constraint specifying the version of Kubernetes required.
    36  	KubeVersion string `json:"kubeVersion"`
    37  	NydusFlag   bool   `json:"NydusFlag"`
    38  	// ClusterRuntime is a flag to distinguish the runtime for k0s、k8s、k3s
    39  	ClusterRuntime ClusterRuntime `json:"ClusterRuntime"`
    40  }
    41  
    42  type ClusterRuntime string
    43  
    44  // Deprecated
    45  func LoadMetadata(rootfs string) (*Metadata, error) {
    46  	metadataPath := filepath.Join(rootfs, common.DefaultMetadataName)
    47  	var metadataFile []byte
    48  	var err error
    49  	var md Metadata
    50  	if !osi.IsFileExist(metadataPath) {
    51  		return nil, nil
    52  	}
    53  
    54  	metadataFile, err = os.ReadFile(filepath.Clean(metadataPath))
    55  	if err != nil {
    56  		return nil, fmt.Errorf("failed to read ClusterImage metadata: %v", err)
    57  	}
    58  	err = json.Unmarshal(metadataFile, &md)
    59  	if err != nil {
    60  		return nil, fmt.Errorf("failed to load ClusterImage metadata: %v", err)
    61  	}
    62  	return &md, nil
    63  }
    64  
    65  // Deprecated
    66  func GetClusterImagePlatform(rootfs string) (cp ocispecs.Platform) {
    67  	// current we only support build on linux
    68  	cp = ocispecs.Platform{
    69  		Architecture: "amd64",
    70  		OS:           "linux",
    71  		Variant:      "",
    72  		OSVersion:    "",
    73  	}
    74  	meta, err := LoadMetadata(rootfs)
    75  	if err != nil {
    76  		return
    77  	}
    78  	if meta == nil {
    79  		return
    80  	}
    81  	if meta.Arch != "" {
    82  		cp.Architecture = meta.Arch
    83  	}
    84  	if meta.Variant != "" {
    85  		cp.Variant = meta.Variant
    86  	}
    87  	return
    88  }
    89  
    90  func RemoteCertCmd(altNames []string, hostIP net.IP, hostName, serviceCIRD, DNSDomain string) string {
    91  	cmd := "seautil cert gen "
    92  	if hostIP != nil {
    93  		cmd += fmt.Sprintf(" --node-ip %s", hostIP.String())
    94  	}
    95  
    96  	if hostName != "" {
    97  		cmd += fmt.Sprintf(" --node-name %s", hostName)
    98  	}
    99  
   100  	if serviceCIRD != "" {
   101  		cmd += fmt.Sprintf(" --service-cidr %s", serviceCIRD)
   102  	}
   103  
   104  	if DNSDomain != "" {
   105  		cmd += fmt.Sprintf(" --dns-domain %s", DNSDomain)
   106  	}
   107  
   108  	for _, name := range append(altNames, common.APIServerDomain) {
   109  		if name != "" {
   110  			cmd += fmt.Sprintf(" --alt-names %s", name)
   111  		}
   112  	}
   113  
   114  	return cmd
   115  }
   116  
   117  func IsInContainer() bool {
   118  	data, err := osi.NewFileReader("/proc/1/environ").ReadAll()
   119  	if err != nil {
   120  		return false
   121  	}
   122  	return strings.Contains(string(data), "container=docker")
   123  }