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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>
45 lines
1.2 KiB
Go
45 lines
1.2 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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"net/url"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/filters"
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"github.com/docker/docker/api/types/versions"
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)
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// ImageList returns a list of images in the docker host.
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func (cli *Client) ImageList(ctx context.Context, options types.ImageListOptions) ([]types.ImageSummary, error) {
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var images []types.ImageSummary
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query := url.Values{}
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optionFilters := options.Filters
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referenceFilters := optionFilters.Get("reference")
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if versions.LessThan(cli.version, "1.25") && len(referenceFilters) > 0 {
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query.Set("filter", referenceFilters[0])
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for _, filterValue := range referenceFilters {
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optionFilters.Del("reference", filterValue)
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}
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}
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if optionFilters.Len() > 0 {
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filterJSON, err := filters.ToParamWithVersion(cli.version, optionFilters)
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if err != nil {
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return images, err
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}
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query.Set("filters", filterJSON)
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}
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if options.All {
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query.Set("all", "1")
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}
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serverResp, err := cli.get(ctx, "/images/json", query, nil)
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defer ensureReaderClosed(serverResp)
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if err != nil {
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return images, err
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}
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err = json.NewDecoder(serverResp.body).Decode(&images)
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return images, err
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}
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