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moby--moby/api/common.go
Avi Das c136591f40 Add comments to api/common constants, closes #11583
Signed-off-by: Avi Das <andas222@gmail.com>
2015-03-23 22:35:41 -05:00

133 lines
3.9 KiB
Go

package api
import (
"fmt"
"mime"
"os"
"path/filepath"
"strings"
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/engine"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/pkg/version"
"github.com/docker/libtrust"
)
// Common constants for daemon and client.
const (
APIVERSION version.Version = "1.18" // Current REST API version
DEFAULTHTTPHOST = "127.0.0.1" // Default HTTP Host used if only port is provided to -H flag e.g. docker -d -H tcp://:8080
DEFAULTUNIXSOCKET = "/var/run/docker.sock" // Docker daemon by default always listens on the default unix socket
DefaultDockerfileName string = "Dockerfile" // Default filename with Docker commands, read by docker build
)
func ValidateHost(val string) (string, error) {
host, err := parsers.ParseHost(DEFAULTHTTPHOST, DEFAULTUNIXSOCKET, val)
if err != nil {
return val, err
}
return host, nil
}
// TODO remove, used on < 1.5 in getContainersJSON
func DisplayablePorts(ports *engine.Table) string {
var (
result = []string{}
hostMappings = []string{}
firstInGroupMap map[string]int
lastInGroupMap map[string]int
)
firstInGroupMap = make(map[string]int)
lastInGroupMap = make(map[string]int)
ports.SetKey("PrivatePort")
ports.Sort()
for _, port := range ports.Data {
var (
current = port.GetInt("PrivatePort")
portKey = port.Get("Type")
firstInGroup int
lastInGroup int
)
if port.Get("IP") != "" {
if port.GetInt("PublicPort") != current {
hostMappings = append(hostMappings, fmt.Sprintf("%s:%d->%d/%s", port.Get("IP"), port.GetInt("PublicPort"), port.GetInt("PrivatePort"), port.Get("Type")))
continue
}
portKey = fmt.Sprintf("%s/%s", port.Get("IP"), port.Get("Type"))
}
firstInGroup = firstInGroupMap[portKey]
lastInGroup = lastInGroupMap[portKey]
if firstInGroup == 0 {
firstInGroupMap[portKey] = current
lastInGroupMap[portKey] = current
continue
}
if current == (lastInGroup + 1) {
lastInGroupMap[portKey] = current
continue
}
result = append(result, FormGroup(portKey, firstInGroup, lastInGroup))
firstInGroupMap[portKey] = current
lastInGroupMap[portKey] = current
}
for portKey, firstInGroup := range firstInGroupMap {
result = append(result, FormGroup(portKey, firstInGroup, lastInGroupMap[portKey]))
}
result = append(result, hostMappings...)
return strings.Join(result, ", ")
}
func FormGroup(key string, start, last int) string {
var (
group string
parts = strings.Split(key, "/")
groupType = parts[0]
ip = ""
)
if len(parts) > 1 {
ip = parts[0]
groupType = parts[1]
}
if start == last {
group = fmt.Sprintf("%d", start)
} else {
group = fmt.Sprintf("%d-%d", start, last)
}
if ip != "" {
group = fmt.Sprintf("%s:%s->%s", ip, group, group)
}
return fmt.Sprintf("%s/%s", group, groupType)
}
func MatchesContentType(contentType, expectedType string) bool {
mimetype, _, err := mime.ParseMediaType(contentType)
if err != nil {
log.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 := os.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
}