mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
133 lines
3.5 KiB
Go
133 lines
3.5 KiB
Go
// +build linux
|
|
|
|
package server
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"net/http"
|
|
"strconv"
|
|
|
|
"github.com/Sirupsen/logrus"
|
|
"github.com/docker/docker/daemon"
|
|
"github.com/docker/docker/pkg/sockets"
|
|
"github.com/docker/docker/pkg/systemd"
|
|
"github.com/docker/docker/pkg/version"
|
|
"github.com/docker/docker/runconfig"
|
|
"github.com/docker/libnetwork/portallocator"
|
|
)
|
|
|
|
const (
|
|
// See http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/tree/kernel/sched/sched.h?id=8cd9234c64c584432f6992fe944ca9e46ca8ea76#n269
|
|
linuxMinCpuShares = 2
|
|
linuxMaxCpuShares = 262144
|
|
)
|
|
|
|
// newServer sets up the required serverClosers and does protocol specific checking.
|
|
func (s *Server) newServer(proto, addr string) ([]serverCloser, error) {
|
|
var (
|
|
err error
|
|
ls []net.Listener
|
|
)
|
|
switch proto {
|
|
case "fd":
|
|
ls, err = systemd.ListenFD(addr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// We don't want to start serving on these sockets until the
|
|
// daemon is initialized and installed. Otherwise required handlers
|
|
// won't be ready.
|
|
<-s.start
|
|
case "tcp":
|
|
l, err := s.initTcpSocket(addr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ls = append(ls, l)
|
|
case "unix":
|
|
l, err := sockets.NewUnixSocket(addr, s.cfg.SocketGroup, s.start)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ls = append(ls, l)
|
|
default:
|
|
return nil, fmt.Errorf("Invalid protocol format: %q", proto)
|
|
}
|
|
var res []serverCloser
|
|
for _, l := range ls {
|
|
res = append(res, &HttpServer{
|
|
&http.Server{
|
|
Addr: addr,
|
|
Handler: s.router,
|
|
},
|
|
l,
|
|
})
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func (s *Server) AcceptConnections(d *daemon.Daemon) {
|
|
// Tell the init daemon we are accepting requests
|
|
s.daemon = d
|
|
s.registerSubRouter()
|
|
go systemd.SdNotify("READY=1")
|
|
// close the lock so the listeners start accepting connections
|
|
select {
|
|
case <-s.start:
|
|
default:
|
|
close(s.start)
|
|
}
|
|
}
|
|
|
|
func allocateDaemonPort(addr string) error {
|
|
host, port, err := net.SplitHostPort(addr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
intPort, err := strconv.Atoi(port)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var hostIPs []net.IP
|
|
if parsedIP := net.ParseIP(host); parsedIP != nil {
|
|
hostIPs = append(hostIPs, parsedIP)
|
|
} else if hostIPs, err = net.LookupIP(host); err != nil {
|
|
return fmt.Errorf("failed to lookup %s address in host specification", host)
|
|
}
|
|
|
|
pa := portallocator.Get()
|
|
for _, hostIP := range hostIPs {
|
|
if _, err := pa.RequestPort(hostIP, "tcp", intPort); err != nil {
|
|
return fmt.Errorf("failed to allocate daemon listening port %d (err: %v)", intPort, err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func adjustCpuShares(version version.Version, hostConfig *runconfig.HostConfig) {
|
|
if version.LessThan("1.19") {
|
|
if hostConfig != nil && hostConfig.CPUShares > 0 {
|
|
// Handle unsupported CpuShares
|
|
if hostConfig.CPUShares < linuxMinCpuShares {
|
|
logrus.Warnf("Changing requested CpuShares of %d to minimum allowed of %d", hostConfig.CPUShares, linuxMinCpuShares)
|
|
hostConfig.CPUShares = linuxMinCpuShares
|
|
} else if hostConfig.CPUShares > linuxMaxCpuShares {
|
|
logrus.Warnf("Changing requested CpuShares of %d to maximum allowed of %d", hostConfig.CPUShares, linuxMaxCpuShares)
|
|
hostConfig.CPUShares = linuxMaxCpuShares
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// getContainersByNameDownlevel performs processing for pre 1.20 APIs. This
|
|
// is only relevant on non-Windows daemons.
|
|
func getContainersByNameDownlevel(w http.ResponseWriter, s *Server, namevar string) error {
|
|
containerJSONRaw, err := s.daemon.ContainerInspectPre120(namevar)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return writeJSON(w, http.StatusOK, containerJSONRaw)
|
|
}
|