mirror of https://github.com/docker/compose.git
71 lines
2.0 KiB
Go
71 lines
2.0 KiB
Go
/*
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Copyright (c) 2020 Docker Inc.
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use, copy,
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modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED,
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INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH
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THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package cmd
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import (
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"context"
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"encoding/json"
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"os"
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"github.com/docker/api/client"
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"github.com/golang/protobuf/ptypes/empty"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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var ExampleCommand = cobra.Command{
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Use: "example",
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Short: "sample command using backend, to be removed later",
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RunE: func(cmd *cobra.Command, args []string) error {
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ctx := cmd.Context()
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c, err := client.New(ctx)
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if err != nil {
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return errors.Wrap(err, "cannot connect to backend")
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}
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info, err := c.BackendInformation(ctx, &empty.Empty{})
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if err != nil {
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return errors.Wrap(err, "fetch backend information")
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}
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enc := json.NewEncoder(os.Stdout)
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enc.SetIndent("", " ")
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return enc.Encode(info)
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},
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}
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type backendAddressKey struct{}
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func BackendAddress(ctx context.Context) (string, error) {
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v, ok := ctx.Value(backendAddressKey{}).(string)
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if !ok {
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return "", errors.New("no backend address key")
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}
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return v, nil
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}
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