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Merge pull request #10836 from Luap99/diff
podman diff accept two images or containers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package diff | ||
|
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "os" | ||
|
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| "github.com/containers/common/pkg/report" | ||
| "github.com/containers/podman/v3/cmd/podman/registry" | ||
| "github.com/containers/podman/v3/pkg/domain/entities" | ||
| "github.com/docker/docker/pkg/archive" | ||
| "github.com/pkg/errors" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
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| func Diff(cmd *cobra.Command, args []string, options entities.DiffOptions) error { | ||
| results, err := registry.ContainerEngine().Diff(registry.GetContext(), args, options) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| switch { | ||
| case report.IsJSON(options.Format): | ||
| return changesToJSON(results) | ||
| case options.Format == "": | ||
| return changesToTable(results) | ||
| default: | ||
| return errors.New("only supported value for '--format' is 'json'") | ||
| } | ||
| } | ||
|
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| type ChangesReportJSON struct { | ||
| Changed []string `json:"changed,omitempty"` | ||
| Added []string `json:"added,omitempty"` | ||
| Deleted []string `json:"deleted,omitempty"` | ||
| } | ||
|
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| func changesToJSON(diffs *entities.DiffReport) error { | ||
| body := ChangesReportJSON{} | ||
| for _, row := range diffs.Changes { | ||
| switch row.Kind { | ||
| case archive.ChangeAdd: | ||
| body.Added = append(body.Added, row.Path) | ||
| case archive.ChangeDelete: | ||
| body.Deleted = append(body.Deleted, row.Path) | ||
| case archive.ChangeModify: | ||
| body.Changed = append(body.Changed, row.Path) | ||
| default: | ||
| return errors.Errorf("output kind %q not recognized", row.Kind) | ||
| } | ||
| } | ||
|
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| // Pull in configured json library | ||
| enc := json.NewEncoder(os.Stdout) | ||
| enc.SetIndent("", " ") | ||
| return enc.Encode(body) | ||
| } | ||
|
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| func changesToTable(diffs *entities.DiffReport) error { | ||
| for _, row := range diffs.Changes { | ||
| fmt.Fprintln(os.Stdout, row.String()) | ||
| } | ||
| return nil | ||
| } | ||
|
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| // IDOrLatestArgs used to validate a nameOrId was provided or the "--latest" flag | ||
| func ValidateContainerDiffArgs(cmd *cobra.Command, args []string) error { | ||
| given, _ := cmd.Flags().GetBool("latest") | ||
| if len(args) > 0 && !given { | ||
| return cobra.RangeArgs(1, 2)(cmd, args) | ||
| } | ||
| if len(args) > 0 && given { | ||
| return errors.New("--latest and containers cannot be used together") | ||
| } | ||
| if len(args) == 0 && !given { | ||
| return errors.Errorf("%q requires a name, id, or the \"--latest\" flag", cmd.CommandPath()) | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| % podman-container-diff(1) | ||
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| ## NAME | ||
| podman\-container\-diff - Inspect changes on a container's filesystem | ||
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| ## SYNOPSIS | ||
| **podman container diff** [*options*] *container* [*container*] | ||
|
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| ## DESCRIPTION | ||
| Displays changes on a container's filesystem. The container will be compared to its parent layer or the second argument when given. | ||
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| The output is prefixed with the following symbols: | ||
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| | Symbol | Description | | ||
| |--------|-------------| | ||
| | A | A file or directory was added. | | ||
| | D | A file or directory was deleted. | | ||
| | C | A file or directory was changed. | | ||
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| ## OPTIONS | ||
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| #### **--format** | ||
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| Alter the output into a different format. The only valid format for **podman container diff** is `json`. | ||
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| #### **--latest**, **-l** | ||
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| Instead of providing the container name or ID, use the last created container. If you use methods other than Podman | ||
| to run containers such as CRI-O, the last started container could be from either of those methods. (This option is not available with the remote Podman client) | ||
|
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| ## EXAMPLE | ||
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| ``` | ||
| # podman container diff container1 | ||
| C /usr | ||
| C /usr/local | ||
| C /usr/local/bin | ||
| A /usr/local/bin/docker-entrypoint.sh | ||
| ``` | ||
|
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| ``` | ||
| $ podman container diff --format json container1 container2 | ||
| { | ||
| "added": [ | ||
| "/test" | ||
| ] | ||
| } | ||
| ``` | ||
|
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| ## SEE ALSO | ||
| **[podman(1)](podman.1.md)**, **[podman-container(1)](podman-container.1.md)** | ||
|
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| ## HISTORY | ||
| July 2021, Originally compiled by Paul Holzinger <[email protected]> |
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