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moby--moby/api/common.go
Alexander Morozov 01112989b7 Fix some style issues
Just read code and saw inconsistencies in variable decls and stuff.

Signed-off-by: Alexander Morozov <lk4d4@docker.com>
2015-10-02 13:39:33 -07:00

127 lines
3.6 KiB
Go

package api
import (
"fmt"
"mime"
"path/filepath"
"sort"
"strconv"
"strings"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/system"
"github.com/docker/docker/pkg/version"
"github.com/docker/libtrust"
)
// Common constants for daemon and client.
const (
// Version of Current REST API
Version version.Version = "1.21"
// MinVersion represents Minimun REST API version supported
MinVersion version.Version = "1.12"
// DefaultDockerfileName is the Default filename with Docker commands, read by docker build
DefaultDockerfileName string = "Dockerfile"
)
// byPrivatePort is temporary type used to sort types.Port by PrivatePort
type byPrivatePort []types.Port
func (r byPrivatePort) Len() int { return len(r) }
func (r byPrivatePort) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
func (r byPrivatePort) Less(i, j int) bool { return r[i].PrivatePort < r[j].PrivatePort }
// DisplayablePorts returns formatted string representing open ports of container
// e.g. "0.0.0.0:80->9090/tcp, 9988/tcp"
// it's used by command 'docker ps'
func DisplayablePorts(ports []types.Port) string {
type portGroup struct {
first int
last int
}
groupMap := make(map[string]*portGroup)
var result []string
var hostMappings []string
sort.Sort(byPrivatePort(ports))
for _, port := range ports {
current := port.PrivatePort
portKey := port.Type
if port.IP != "" {
if port.PublicPort != current {
hostMappings = append(hostMappings, fmt.Sprintf("%s:%d->%d/%s", port.IP, port.PublicPort, port.PrivatePort, port.Type))
continue
}
portKey = fmt.Sprintf("%s/%s", port.IP, port.Type)
}
group := groupMap[portKey]
if group == nil {
groupMap[portKey] = &portGroup{first: current, last: current}
continue
}
if current == (group.last + 1) {
group.last = current
continue
}
result = append(result, formGroup(portKey, group.first, group.last))
groupMap[portKey] = &portGroup{first: current, last: current}
}
for portKey, g := range groupMap {
result = append(result, formGroup(portKey, g.first, g.last))
}
result = append(result, hostMappings...)
return strings.Join(result, ", ")
}
func formGroup(key string, start, last int) string {
parts := strings.Split(key, "/")
groupType := parts[0]
var ip string
if len(parts) > 1 {
ip = parts[0]
groupType = parts[1]
}
group := strconv.Itoa(start)
if start != last {
group = fmt.Sprintf("%s-%d", group, last)
}
if ip != "" {
group = fmt.Sprintf("%s:%s->%s", ip, group, group)
}
return fmt.Sprintf("%s/%s", group, groupType)
}
// MatchesContentType validates the content type against the expected one
func MatchesContentType(contentType, expectedType string) bool {
mimetype, _, err := mime.ParseMediaType(contentType)
if err != nil {
logrus.Errorf("Error parsing media type: %s error: %v", contentType, err)
}
return err == nil && mimetype == expectedType
}
// LoadOrCreateTrustKey attempts to load the libtrust key at the given path,
// otherwise generates a new one
func LoadOrCreateTrustKey(trustKeyPath string) (libtrust.PrivateKey, error) {
err := system.MkdirAll(filepath.Dir(trustKeyPath), 0700)
if err != nil {
return nil, err
}
trustKey, err := libtrust.LoadKeyFile(trustKeyPath)
if err == libtrust.ErrKeyFileDoesNotExist {
trustKey, err = libtrust.GenerateECP256PrivateKey()
if err != nil {
return nil, fmt.Errorf("Error generating key: %s", err)
}
if err := libtrust.SaveKey(trustKeyPath, trustKey); err != nil {
return nil, fmt.Errorf("Error saving key file: %s", err)
}
} else if err != nil {
return nil, fmt.Errorf("Error loading key file %s: %s", trustKeyPath, err)
}
return trustKey, nil
}