9c846b2fcc
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>
54 lines
2 KiB
Go
54 lines
2 KiB
Go
package client // import "github.com/docker/docker/client"
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import (
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"context"
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"encoding/json"
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"github.com/docker/docker/api/types"
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)
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// ContainerExecCreate creates a new exec configuration to run an exec process.
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func (cli *Client) ContainerExecCreate(ctx context.Context, container string, config types.ExecConfig) (types.IDResponse, error) {
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var response types.IDResponse
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if err := cli.NewVersionError("1.25", "env"); len(config.Env) != 0 && err != nil {
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return response, err
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}
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resp, err := cli.post(ctx, "/containers/"+container+"/exec", nil, config, nil)
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defer ensureReaderClosed(resp)
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if err != nil {
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return response, err
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}
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err = json.NewDecoder(resp.body).Decode(&response)
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return response, err
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}
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// ContainerExecStart starts an exec process already created in the docker host.
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func (cli *Client) ContainerExecStart(ctx context.Context, execID string, config types.ExecStartCheck) error {
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resp, err := cli.post(ctx, "/exec/"+execID+"/start", nil, config, nil)
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ensureReaderClosed(resp)
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return err
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}
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// ContainerExecAttach attaches a connection to an exec process in the server.
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// It returns a types.HijackedConnection with the hijacked connection
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// and the a reader to get output. It's up to the called to close
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// the hijacked connection by calling types.HijackedResponse.Close.
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func (cli *Client) ContainerExecAttach(ctx context.Context, execID string, config types.ExecStartCheck) (types.HijackedResponse, error) {
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headers := map[string][]string{"Content-Type": {"application/json"}}
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return cli.postHijacked(ctx, "/exec/"+execID+"/start", nil, config, headers)
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}
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// ContainerExecInspect returns information about a specific exec process on the docker host.
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func (cli *Client) ContainerExecInspect(ctx context.Context, execID string) (types.ContainerExecInspect, error) {
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var response types.ContainerExecInspect
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resp, err := cli.get(ctx, "/exec/"+execID+"/json", nil, nil)
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if err != nil {
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return response, err
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}
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err = json.NewDecoder(resp.body).Decode(&response)
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ensureReaderClosed(resp)
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return response, err
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}
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