github.com/containerd/containerd@v22.0.0-20200918172823-438c87b8e050+incompatible/services/tasks/local_unix.go (about)

     1  // +build !windows
     2  
     3  /*
     4     Copyright The containerd Authors.
     5  
     6     Licensed under the Apache License, Version 2.0 (the "License");
     7     you may not use this file except in compliance with the License.
     8     You may obtain a copy of the License at
     9  
    10         http://www.apache.org/licenses/LICENSE-2.0
    11  
    12     Unless required by applicable law or agreed to in writing, software
    13     distributed under the License is distributed on an "AS IS" BASIS,
    14     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15     See the License for the specific language governing permissions and
    16     limitations under the License.
    17  */
    18  
    19  package tasks
    20  
    21  import (
    22  	"github.com/containerd/containerd/log"
    23  	"github.com/containerd/containerd/plugin"
    24  	"github.com/containerd/containerd/runtime"
    25  	"github.com/pkg/errors"
    26  )
    27  
    28  var tasksServiceRequires = []plugin.Type{
    29  	plugin.RuntimePlugin,
    30  	plugin.RuntimePluginV2,
    31  	plugin.MetadataPlugin,
    32  	plugin.TaskMonitorPlugin,
    33  }
    34  
    35  func loadV1Runtimes(ic *plugin.InitContext) (map[string]runtime.PlatformRuntime, error) {
    36  	rt, err := ic.GetByType(plugin.RuntimePlugin)
    37  	if err != nil {
    38  		return nil, err
    39  	}
    40  
    41  	runtimes := make(map[string]runtime.PlatformRuntime)
    42  	for _, rr := range rt {
    43  		ri, err := rr.Instance()
    44  		if err != nil {
    45  			log.G(ic.Context).WithError(err).Warn("could not load runtime instance due to initialization error")
    46  			continue
    47  		}
    48  		r := ri.(runtime.PlatformRuntime)
    49  		runtimes[r.ID()] = r
    50  	}
    51  
    52  	if len(runtimes) == 0 {
    53  		return nil, errors.New("no runtimes available to create task service")
    54  	}
    55  	return runtimes, nil
    56  }