moby/client/network_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

49 lines
1.6 KiB
Go

package client // import "github.com/docker/docker/client"
import (
"bytes"
"context"
"encoding/json"
"io/ioutil"
"net/url"
"github.com/docker/docker/api/types"
)
// NetworkInspect returns the information for a specific network configured in the docker host.
func (cli *Client) NetworkInspect(ctx context.Context, networkID string, options types.NetworkInspectOptions) (types.NetworkResource, error) {
networkResource, _, err := cli.NetworkInspectWithRaw(ctx, networkID, options)
return networkResource, err
}
// NetworkInspectWithRaw returns the information for a specific network configured in the docker host and its raw representation.
func (cli *Client) NetworkInspectWithRaw(ctx context.Context, networkID string, options types.NetworkInspectOptions) (types.NetworkResource, []byte, error) {
if networkID == "" {
return types.NetworkResource{}, nil, objectNotFoundError{object: "network", id: networkID}
}
var (
networkResource types.NetworkResource
resp serverResponse
err error
)
query := url.Values{}
if options.Verbose {
query.Set("verbose", "true")
}
if options.Scope != "" {
query.Set("scope", options.Scope)
}
resp, err = cli.get(ctx, "/networks/"+networkID, query, nil)
defer ensureReaderClosed(resp)
if err != nil {
return networkResource, nil, wrapResponseError(err, resp, "network", networkID)
}
body, err := ioutil.ReadAll(resp.body)
if err != nil {
return networkResource, nil, err
}
rdr := bytes.NewReader(body)
err = json.NewDecoder(rdr).Decode(&networkResource)
return networkResource, body, err
}