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moby--moby/client/plugin_inspect.go
Sebastiaan van Stijn 9c846b2fcc
Client: always call ensureReaderClosed
Unlike a plain `net/http/client.Do()`, requests made through client/request
use the `sendRequest` function, which parses the server response, and may
convert non-transport errors into errors (through `cli.checkResponseErr()`).

This means that we cannot assume that no reader was opened if an error is
returned.

This patch changes various locations where `ensureReaderClosed` was only
called in the non-error situation, and uses a `defer` to make sure it's
always called.

`ensureReaderClosed` itself already checks if the response's body was set,
so in situations where the error was due to a transport error, calling
`ensureReaderClosed` should be a no-op.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2019-03-18 15:26:21 +01:00

31 lines
783 B
Go

package client // import "github.com/docker/docker/client"
import (
"bytes"
"context"
"encoding/json"
"io/ioutil"
"github.com/docker/docker/api/types"
)
// PluginInspectWithRaw inspects an existing plugin
func (cli *Client) PluginInspectWithRaw(ctx context.Context, name string) (*types.Plugin, []byte, error) {
if name == "" {
return nil, nil, objectNotFoundError{object: "plugin", id: name}
}
resp, err := cli.get(ctx, "/plugins/"+name+"/json", nil, nil)
defer ensureReaderClosed(resp)
if err != nil {
return nil, nil, wrapResponseError(err, resp, "plugin", name)
}
body, err := ioutil.ReadAll(resp.body)
if err != nil {
return nil, nil, err
}
var p types.Plugin
rdr := bytes.NewReader(body)
err = json.NewDecoder(rdr).Decode(&p)
return &p, body, err
}