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no not print empty keys in docker info

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Signed-off-by: Victor Vieux <victorvieux@gmail.com>
This commit is contained in:
Victor Vieux 2015-05-29 16:48:02 -07:00
parent 488c355d94
commit c790aa36ea
3 changed files with 42 additions and 16 deletions
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27
api/client/info.go
View file

@ -5,6 +5,7 @@ import (
"fmt"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/ioutils"
flag "github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/pkg/units"
)
@ -29,20 +30,20 @@ func (cli *DockerCli) CmdInfo(args ...string) error {
fmt.Fprintf(cli.out, "Containers: %d\n", info.Containers)
fmt.Fprintf(cli.out, "Images: %d\n", info.Images)
fmt.Fprintf(cli.out, "Storage Driver: %s\n", info.Driver)
ioutils.FprintfIfNotEmpty(cli.out, "Storage Driver: %s\n", info.Driver)
if info.DriverStatus != nil {
for _, pair := range info.DriverStatus {
fmt.Fprintf(cli.out, " %s: %s\n", pair[0], pair[1])
}
}
fmt.Fprintf(cli.out, "Execution Driver: %s\n", info.ExecutionDriver)
fmt.Fprintf(cli.out, "Logging Driver: %s\n", info.LoggingDriver)
fmt.Fprintf(cli.out, "Kernel Version: %s\n", info.KernelVersion)
fmt.Fprintf(cli.out, "Operating System: %s\n", info.OperatingSystem)
ioutils.FprintfIfNotEmpty(cli.out, "Execution Driver: %s\n", info.ExecutionDriver)
ioutils.FprintfIfNotEmpty(cli.out, "Logging Driver: %s\n", info.LoggingDriver)
ioutils.FprintfIfNotEmpty(cli.out, "Kernel Version: %s\n", info.KernelVersion)
ioutils.FprintfIfNotEmpty(cli.out, "Operating System: %s\n", info.OperatingSystem)
fmt.Fprintf(cli.out, "CPUs: %d\n", info.NCPU)
fmt.Fprintf(cli.out, "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal)))
fmt.Fprintf(cli.out, "Name: %s\n", info.Name)
fmt.Fprintf(cli.out, "ID: %s\n", info.ID)
ioutils.FprintfIfNotEmpty(cli.out, "Name: %s\n", info.Name)
ioutils.FprintfIfNotEmpty(cli.out, "ID: %s\n", info.ID)
if info.Debug {
fmt.Fprintf(cli.out, "Debug mode (server): %v\n", info.Debug)
@ -55,15 +56,9 @@ func (cli *DockerCli) CmdInfo(args ...string) error {
fmt.Fprintf(cli.out, "Docker Root Dir: %s\n", info.DockerRootDir)
}
if info.HttpProxy != "" {
fmt.Fprintf(cli.out, "Http Proxy: %s\n", info.HttpProxy)
}
if info.HttpsProxy != "" {
fmt.Fprintf(cli.out, "Https Proxy: %s\n", info.HttpsProxy)
}
if info.NoProxy != "" {
fmt.Fprintf(cli.out, "No Proxy: %s\n", info.NoProxy)
}
ioutils.FprintfIfNotEmpty(cli.out, "Http Proxy: %s\n", info.HttpProxy)
ioutils.FprintfIfNotEmpty(cli.out, "Https Proxy: %s\n", info.HttpsProxy)
ioutils.FprintfIfNotEmpty(cli.out, "No Proxy: %s\n", info.NoProxy)
if info.IndexServerAddress != "" {
u := cli.configFile.AuthConfigs[info.IndexServerAddress].Username

14
pkg/ioutils/fmt.go Normal file
View file

@ -0,0 +1,14 @@
package ioutils
import (
"fmt"
"io"
)
// FprintfIfNotEmpty prints the string value if it's not empty
func FprintfIfNotEmpty(w io.Writer, format, value string) (int, error) {
if value != "" {
return fmt.Fprintf(w, format, value)
}
return 0, nil
}

17
pkg/ioutils/fmt_test.go Normal file
View file

@ -0,0 +1,17 @@
package ioutils
import "testing"
func TestFprintfIfNotEmpty(t *testing.T) {
wc := NewWriteCounter(&NopWriter{})
n, _ := FprintfIfNotEmpty(wc, "foo%s", "")
if wc.Count != 0 || n != 0 {
t.Errorf("Wrong count: %v vs. %v vs. 0", wc.Count, n)
}
n, _ = FprintfIfNotEmpty(wc, "foo%s", "bar")
if wc.Count != 6 || n != 6 {
t.Errorf("Wrong count: %v vs. %v vs. 6", wc.Count, n)
}
}