moby/client/task_list.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

35 lines
787 B
Go

package client // import "github.com/docker/docker/client"
import (
"context"
"encoding/json"
"net/url"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/swarm"
)
// TaskList returns the list of tasks.
func (cli *Client) TaskList(ctx context.Context, options types.TaskListOptions) ([]swarm.Task, error) {
query := url.Values{}
if options.Filters.Len() > 0 {
filterJSON, err := filters.ToJSON(options.Filters)
if err != nil {
return nil, err
}
query.Set("filters", filterJSON)
}
resp, err := cli.get(ctx, "/tasks", query, nil)
defer ensureReaderClosed(resp)
if err != nil {
return nil, err
}
var tasks []swarm.Task
err = json.NewDecoder(resp.body).Decode(&tasks)
return tasks, err
}