github.com/containerd/nerdctl@v1.7.7/pkg/composer/up_network.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package composer
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  
    23  	"github.com/containerd/log"
    24  	"github.com/containerd/nerdctl/pkg/labels"
    25  	"github.com/containerd/nerdctl/pkg/reflectutil"
    26  )
    27  
    28  func (c *Composer) upNetwork(ctx context.Context, shortName string) error {
    29  	net, ok := c.project.Networks[shortName]
    30  	if !ok {
    31  		return fmt.Errorf("invalid network name %q", shortName)
    32  	}
    33  	if net.External.External {
    34  		// NOP
    35  		return nil
    36  	}
    37  
    38  	if unknown := reflectutil.UnknownNonEmptyFields(&net, "Name", "Ipam", "Driver", "DriverOpts"); len(unknown) > 0 {
    39  		log.G(ctx).Warnf("Ignoring: network %s: %+v", shortName, unknown)
    40  	}
    41  
    42  	// shortName is like "default", fullName is like "compose-wordpress_default"
    43  	fullName := net.Name
    44  	netExists, err := c.NetworkExists(fullName)
    45  	if err != nil {
    46  		return err
    47  	} else if !netExists {
    48  		log.G(ctx).Infof("Creating network %s", fullName)
    49  		//add metadata labels to network https://github.com/compose-spec/compose-spec/blob/master/spec.md#labels-1
    50  		createArgs := []string{
    51  			fmt.Sprintf("--label=%s=%s", labels.ComposeProject, c.project.Name),
    52  			fmt.Sprintf("--label=%s=%s", labels.ComposeNetwork, shortName),
    53  		}
    54  
    55  		if net.Driver != "" {
    56  			createArgs = append(createArgs, fmt.Sprintf("--driver=%s", net.Driver))
    57  		}
    58  
    59  		if net.DriverOpts != nil {
    60  			for k, v := range net.DriverOpts {
    61  				createArgs = append(createArgs, fmt.Sprintf("--opt=%s=%s", k, v))
    62  			}
    63  		}
    64  
    65  		if net.Ipam.Config != nil {
    66  			if len(net.Ipam.Config) > 1 {
    67  				log.G(ctx).Warnf("Ignoring: network %s: imam.config %+v", shortName, net.Ipam.Config[1:])
    68  			}
    69  
    70  			ipamConfig := net.Ipam.Config[0]
    71  			if unknown := reflectutil.UnknownNonEmptyFields(ipamConfig, "Subnet", "Gateway", "IPRange"); len(unknown) > 0 {
    72  				log.G(ctx).Warnf("Ignoring: network %s: ipam.config[0]: %+v", shortName, unknown)
    73  			}
    74  			if ipamConfig.Subnet != "" {
    75  				createArgs = append(createArgs, fmt.Sprintf("--subnet=%s", ipamConfig.Subnet))
    76  			}
    77  			if ipamConfig.Gateway != "" {
    78  				createArgs = append(createArgs, fmt.Sprintf("--gateway=%s", ipamConfig.Gateway))
    79  			}
    80  			if ipamConfig.IPRange != "" {
    81  				createArgs = append(createArgs, fmt.Sprintf("--ip-range=%s", ipamConfig.IPRange))
    82  			}
    83  		}
    84  
    85  		createArgs = append(createArgs, fullName)
    86  
    87  		if c.DebugPrintFull {
    88  			log.G(ctx).Debugf("Creating network args: %s", createArgs)
    89  		}
    90  
    91  		if err := c.runNerdctlCmd(ctx, append([]string{"network", "create"}, createArgs...)...); err != nil {
    92  			return err
    93  		}
    94  	}
    95  	return nil
    96  }