/
utils.go
351 lines (303 loc) · 9.32 KB
/
utils.go
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package ctrd
import (
"context"
"crypto/tls"
"net"
"net/http"
"net/url"
"syscall"
"time"
"github.com/alibaba/pouch/apis/types"
"github.com/alibaba/pouch/pkg/errtypes"
"github.com/alibaba/pouch/pkg/log"
"github.com/alibaba/pouch/pkg/reference"
"github.com/containerd/containerd"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/remotes"
"github.com/containerd/containerd/remotes/docker"
"github.com/containerd/containerd/runtime/linux/runctypes"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
)
func withExitShimV1CheckpointTaskOpts() containerd.CheckpointTaskOpts {
return func(r *containerd.CheckpointTaskInfo) error {
r.Options = &runctypes.CheckpointOptions{
Exit: true,
}
return nil
}
}
// isInsecureDomain will return true if the domain of reference is in the
// insecure registry. The insecure registry will accept HTTP or HTTPS with
// certificates from unknown CAs.
func (c *Client) isInsecureDomain(ref string) bool {
u, err := url.Parse("dummy://" + ref)
if err != nil {
log.With(nil).Warningf("failed to parse reference(%s) into url: %v", ref, err)
return false
}
for _, r := range c.insecureRegistries {
if r == u.Host {
return true
}
}
return false
}
// resolverWrapper wrap a image resolver
// do reference <-> name translation before each operation.
type resolverWrapper struct {
refToName map[string]string
resolver remotes.Resolver
}
// Resolve attempts to resolve the reference into a name and descriptor.
// translate the reference to a name which may be a short name like 'library/ubuntu'.
func (r *resolverWrapper) Resolve(ctx context.Context, ref string) (name string, desc ocispec.Descriptor, err error) {
newRef, desc, err := r.resolver.Resolve(ctx, ref)
if err != nil {
return "", ocispec.Descriptor{}, err
}
if name, ok := r.refToName[newRef]; ok {
return name, desc, nil
}
return newRef, desc, nil
}
// Fetcher returns a new fetcher for the provided reference.
// All content fetched from the returned fetcher will be
// from the namespace referred to by ref.
func (r *resolverWrapper) Fetcher(ctx context.Context, name string) (remotes.Fetcher, error) {
ref := name
for rf, n := range r.refToName {
if name == n {
ref = rf
break
}
}
return r.resolver.Fetcher(ctx, ref)
}
// Pusher returns a new pusher for the provided reference
func (r *resolverWrapper) Pusher(ctx context.Context, name string) (remotes.Pusher, error) {
ref := name
for rf, n := range r.refToName {
if name == n {
ref = rf
break
}
}
return r.resolver.Pusher(ctx, ref)
}
func newImageResolver(refToName map[string]string, resolverOpt docker.ResolverOptions) remotes.Resolver {
return &resolverWrapper{
refToName: refToName,
resolver: docker.NewResolver(resolverOpt),
}
}
// getResolver try to resolve ref in the reference list, return the resolver and the first available ref.
func (c *Client) getResolver(ctx context.Context, authConfig *types.AuthConfig, name string, refs []string, resolverOpt docker.ResolverOptions) (remotes.Resolver, string, error) {
username, secret := "", ""
if authConfig != nil {
username = authConfig.Username
secret = authConfig.Password
}
var (
availableRef string
opt docker.ResolverOptions
resolveErr error
)
for _, ref := range refs {
namedRef, err := reference.Parse(ref)
if err != nil {
log.With(nil).Warnf("failed to parse image reference when trying to resolve image %s, raw reference is %s: %v", ref, name, err)
continue
}
namedRef = reference.TrimTagForDigest(reference.WithDefaultTagIfMissing(namedRef))
insecure := c.isInsecureDomain(ref)
tr := &http.Transport{
Proxy: proxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 10,
IdleConnTimeout: 30 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: &tls.Config{
InsecureSkipVerify: insecure,
},
ExpectContinueTimeout: 5 * time.Second,
}
opt = docker.ResolverOptions{
Tracker: resolverOpt.Tracker,
PlainHTTP: insecure,
Credentials: func(host string) (string, string, error) {
// Only one host
return username, secret, nil
},
Client: &http.Client{
Transport: tr,
},
}
resolver := docker.NewResolver(opt)
_, _, err = resolver.Resolve(ctx, namedRef.String())
if err == nil {
availableRef = namedRef.String()
break
}
if errors.Cause(err) == docker.ErrInvalidAuthorization {
resolveErr = errors.Wrap(errtypes.ErrInvalidAuthorization, err.Error())
} else {
resolveErr = errors.Wrap(errtypes.ErrNotfound, err.Error())
}
}
if availableRef == "" {
log.With(nil).Warnf("there is no available image reference after trying %+q", refs)
return nil, "", resolveErr
}
refToName := map[string]string{
availableRef: name,
}
return newImageResolver(refToName, opt), availableRef, nil
}
func (c *Client) preparePushResolver(authConfig *types.AuthConfig, ref string, resolverOpt docker.ResolverOptions) (remotes.Resolver, error) {
var (
username = ""
secret = ""
insecure = c.isInsecureDomain(ref)
)
if authConfig != nil {
username = authConfig.Username
secret = authConfig.Password
}
tr := &http.Transport{
Proxy: proxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 10,
IdleConnTimeout: 30 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: &tls.Config{
InsecureSkipVerify: insecure,
},
ExpectContinueTimeout: 5 * time.Second,
}
options := docker.ResolverOptions{
Tracker: resolverOpt.Tracker,
PlainHTTP: insecure,
Credentials: func(host string) (string, string, error) {
// Only one host
return username, secret, nil
},
Client: &http.Client{
Transport: tr,
},
}
return docker.NewResolver(options), nil
}
// GetWeightDevice Convert weight device from []*types.WeightDevice to []specs.LinuxWeightDevice
func GetWeightDevice(devs []*types.WeightDevice) ([]specs.LinuxWeightDevice, error) {
var stat syscall.Stat_t
var weightDevice []specs.LinuxWeightDevice
for _, dev := range devs {
if err := syscall.Stat(dev.Path, &stat); err != nil {
return nil, err
}
d := specs.LinuxWeightDevice{
Weight: &dev.Weight,
}
d.Major = int64(stat.Rdev >> 8)
d.Minor = int64(stat.Rdev & 255)
weightDevice = append(weightDevice, d)
}
return weightDevice, nil
}
// GetThrottleDevice Convert throttle device from []*types.ThrottleDevice to []specs.LinuxThrottleDevice
func GetThrottleDevice(devs []*types.ThrottleDevice) ([]specs.LinuxThrottleDevice, error) {
var stat syscall.Stat_t
var ThrottleDevice []specs.LinuxThrottleDevice
for _, dev := range devs {
if err := syscall.Stat(dev.Path, &stat); err != nil {
return nil, err
}
d := specs.LinuxThrottleDevice{
Rate: dev.Rate,
}
d.Major = int64(stat.Rdev >> 8)
d.Minor = int64(stat.Rdev & 255)
ThrottleDevice = append(ThrottleDevice, d)
}
return ThrottleDevice, nil
}
// toLinuxResources transfers Pouch Resources to LinuxResources.
func toLinuxResources(resources types.Resources) (*specs.LinuxResources, error) {
r := &specs.LinuxResources{}
// toLinuxBlockIO
readBpsDevice, err := GetThrottleDevice(resources.BlkioDeviceReadBps)
if err != nil {
return nil, err
}
readIOpsDevice, err := GetThrottleDevice(resources.BlkioDeviceReadIOps)
if err != nil {
return nil, err
}
writeBpsDevice, err := GetThrottleDevice(resources.BlkioDeviceWriteBps)
if err != nil {
return nil, err
}
writeIOpsDevice, err := GetThrottleDevice(resources.BlkioDeviceWriteIOps)
if err != nil {
return nil, err
}
r.BlockIO = &specs.LinuxBlockIO{
Weight: &resources.BlkioWeight,
ThrottleReadBpsDevice: readBpsDevice,
ThrottleReadIOPSDevice: readIOpsDevice,
ThrottleWriteBpsDevice: writeBpsDevice,
ThrottleWriteIOPSDevice: writeIOpsDevice,
}
// toLinuxCPU
shares := uint64(resources.CPUShares)
period := uint64(resources.CPUPeriod)
r.CPU = &specs.LinuxCPU{
Cpus: resources.CpusetCpus,
Mems: resources.CpusetMems,
Shares: &shares,
Period: &period,
Quota: &resources.CPUQuota,
}
// toLinuxMemory
r.Memory = &specs.LinuxMemory{
Limit: &resources.Memory,
Swap: &resources.MemorySwap,
Reservation: &resources.MemoryReservation,
Kernel: &resources.KernelMemory,
// TODO: add other fields of specs.LinuxMemory
}
// TODO: add more fields.
return r, nil
}
// convertCtrdErr converts containerd client error into a pouchd manager error.
// containerd client error converts GRPC code from containerd API to containerd client error.
// pouchd manager error is used in the whole managers and API layers to construct status code for API.
// there should be a way convert the previous to the latter one.
func convertCtrdErr(err error) error {
if err == nil {
return nil
}
if errdefs.IsNotFound(err) {
return errors.Wrap(errtypes.ErrNotfound, err.Error())
}
if errdefs.IsAlreadyExists(err) {
return errors.Wrap(errtypes.ErrAlreadyExisted, err.Error())
}
if errdefs.IsInvalidArgument(err) {
return errors.Wrap(errtypes.ErrInvalidParam, err.Error())
}
if errdefs.IsNotImplemented(err) {
return errors.Wrap(errtypes.ErrNotImplemented, err.Error())
}
return err
}