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