func buildContainerListOptions(opts *psOptions) (*types.ContainerListOptions, error) {
options := &types.ContainerListOptions{
All: opts.all,
Limit: opts.last,
Size: opts.size,
Filters: opts.filter.Value(),
}
if opts.nLatest && opts.last == -1 {
options.Limit = 1
}
tmpl, err := templates.Parse(opts.format)
if err != nil {
return nil, err
}
optionsProcessor := listOptionsProcessor{}
// This shouldn't error out but swallowing the error makes it harder
// to track down if preProcessor issues come up. Ref #24696
if err := tmpl.Execute(ioutil.Discard, optionsProcessor); err != nil {
return nil, err
}
// At the moment all we need is to capture .Size for preprocessor
options.Size = opts.size || optionsProcessor["size"]
return options, nil
}
func (c *Context) parseFormat() (*template.Template, error) {
tmpl, err := templates.Parse(c.finalFormat)
if err != nil {
return tmpl, fmt.Errorf("Template parsing error: %v\n", err)
}
return tmpl, err
}
func formatInfo(dockerCli *command.DockerCli, info types.Info, format string) error {
tmpl, err := templates.Parse(format)
if err != nil {
return cli.StatusError{StatusCode: 64,
Status: "Template parsing error: " + err.Error()}
}
err = tmpl.Execute(dockerCli.Out(), info)
dockerCli.Out().Write([]byte{'\n'})
return err
}
func runVersion(dockerCli *command.DockerCli, opts *versionOptions) error {
ctx := context.Background()
templateFormat := versionTemplate
if opts.format != "" {
templateFormat = opts.format
}
tmpl, err := templates.Parse(templateFormat)
if err != nil {
return cli.StatusError{StatusCode: 64,
Status: "Template parsing error: " + err.Error()}
}
APIVersion := dockerCli.Client().ClientVersion()
if defaultAPIVersion := dockerCli.DefaultVersion(); APIVersion != defaultAPIVersion {
APIVersion = fmt.Sprintf("%s (downgraded from %s)", APIVersion, defaultAPIVersion)
}
vd := types.VersionResponse{
Client: &types.Version{
Version: dockerversion.Version,
APIVersion: APIVersion,
GoVersion: runtime.Version(),
GitCommit: dockerversion.GitCommit,
BuildTime: dockerversion.BuildTime,
Os: runtime.GOOS,
Arch: runtime.GOARCH,
},
}
serverVersion, err := dockerCli.Client().ServerVersion(ctx)
if err == nil {
vd.Server = &serverVersion
}
// first we need to make BuildTime more human friendly
t, errTime := time.Parse(time.RFC3339Nano, vd.Client.BuildTime)
if errTime == nil {
vd.Client.BuildTime = t.Format(time.ANSIC)
}
if vd.ServerOK() {
t, errTime = time.Parse(time.RFC3339Nano, vd.Server.BuildTime)
if errTime == nil {
vd.Server.BuildTime = t.Format(time.ANSIC)
}
}
if err2 := tmpl.Execute(dockerCli.Out(), vd); err2 != nil && err == nil {
err = err2
}
dockerCli.Out().Write([]byte{'\n'})
return err
}
// NewTemplateInspectorFromString creates a new TemplateInspector from a string
// which is compiled into a template.
func NewTemplateInspectorFromString(out io.Writer, tmplStr string) (Inspector, error) {
if tmplStr == "" {
return NewIndentedInspector(out), nil
}
tmpl, err := templates.Parse(tmplStr)
if err != nil {
return nil, fmt.Errorf("Template parsing error: %s", err)
}
return NewTemplateInspector(out, tmpl), nil
}
func makeTemplate(format string) (*template.Template, error) {
if format == "" {
return nil, nil
}
tmpl, err := templates.Parse(format)
if err != nil {
return tmpl, err
}
// we execute the template for an empty message, so as to validate
// a bad template like "{{.badFieldString}}"
return tmpl, tmpl.Execute(ioutil.Discard, &eventtypes.Message{})
}
func TestTemplateInspectorEmpty(t *testing.T) {
b := new(bytes.Buffer)
tmpl, err := templates.Parse("{{.DNS}}")
if err != nil {
t.Fatal(err)
}
i := NewTemplateInspector(b, tmpl)
if err := i.Flush(); err != nil {
t.Fatal(err)
}
if b.String() != "\n" {
t.Fatalf("Expected `\\n`, got `%s`", b.String())
}
}
func TestTemplateInspectorRawFallbackError(t *testing.T) {
b := new(bytes.Buffer)
tmpl, err := templates.Parse("{{.Dns}}")
if err != nil {
t.Fatal(err)
}
i := NewTemplateInspector(b, tmpl)
err = i.Inspect(testElement{"0.0.0.0"}, []byte(`{"Foo": "0.0.0.0"}`))
if err == nil {
t.Fatal("Expected error got nil")
}
if !strings.HasPrefix(err.Error(), "Template parsing error") {
t.Fatalf("Expected template error, got %v", err)
}
}
func TestTemplateInspectorRawFallback(t *testing.T) {
b := new(bytes.Buffer)
tmpl, err := templates.Parse("{{.Dns}}")
if err != nil {
t.Fatal(err)
}
i := NewTemplateInspector(b, tmpl)
if err := i.Inspect(testElement{"0.0.0.0"}, []byte(`{"Dns": "0.0.0.0"}`)); err != nil {
t.Fatal(err)
}
if err := i.Flush(); err != nil {
t.Fatal(err)
}
if b.String() != "0.0.0.0\n" {
t.Fatalf("Expected `0.0.0.0\\n`, got `%s`", b.String())
}
}
func TestTemplateInspectorDefault(t *testing.T) {
b := new(bytes.Buffer)
tmpl, err := templates.Parse("{{.DNS}}")
if err != nil {
t.Fatal(err)
}
i := NewTemplateInspector(b, tmpl)
if err := i.Inspect(testElement{"0.0.0.0"}, nil); err != nil {
t.Fatal(err)
}
if err := i.Flush(); err != nil {
t.Fatal(err)
}
if b.String() != "0.0.0.0\n" {
t.Fatalf("Expected `0.0.0.0\\n`, got `%s`", b.String())
}
}