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Merge pull request #1209 from stevvooe/remove-errors

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linux, linux/shim: remove error definitions
This commit is contained in:
Derek McGowan
2017-07-18 19:18:23 -07:00
committed by GitHub
parent 35d590048f 6d0bcd5aec
commit a8504277cc
12 changed files with 82 additions and 97 deletions
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11
linux/process.go
View File

@@ -4,12 +4,11 @@ package linux
import (
"context"
"errors"
"github.com/containerd/containerd/api/types/task"
"github.com/containerd/containerd/errdefs"
shim "github.com/containerd/containerd/linux/shim/v1"
"github.com/containerd/containerd/runtime"
"google.golang.org/grpc"
)
type Process struct {
@@ -27,7 +26,7 @@ func (p *Process) Kill(ctx context.Context, signal uint32, _ bool) error {
ID: p.id,
})
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
return errdefs.FromGRPC(err)
}
return err
}
@@ -38,7 +37,7 @@ func (p *Process) State(ctx context.Context) (runtime.State, error) {
ID: p.id,
})
if err != nil {
return runtime.State{}, errors.New(grpc.ErrorDesc(err))
return runtime.State{}, errdefs.FromGRPC(err)
}
var status runtime.Status
switch response.Status {
@@ -69,7 +68,7 @@ func (p *Process) ResizePty(ctx context.Context, size runtime.ConsoleSize) error
Height: size.Height,
})
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}
@@ -80,7 +79,7 @@ func (p *Process) CloseIO(ctx context.Context) error {
Stdin: true,
})
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}

7
linux/runtime.go
View File

@@ -9,10 +9,9 @@ import (
"os"
"path/filepath"
"google.golang.org/grpc"
"github.com/boltdb/bolt"
"github.com/containerd/containerd/api/types"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/identifiers"
client "github.com/containerd/containerd/linux/shim"
shim "github.com/containerd/containerd/linux/shim/v1"
@@ -170,7 +169,7 @@ func (r *Runtime) Create(ctx context.Context, id string, opts runtime.CreateOpts
})
}
if _, err = s.Create(ctx, sopts); err != nil {
return nil, errors.New(grpc.ErrorDesc(err))
return nil, errdefs.FromGRPC(err)
}
t := newTask(id, namespace, s)
if err := r.tasks.Add(ctx, t); err != nil {
@@ -197,7 +196,7 @@ func (r *Runtime) Delete(ctx context.Context, c runtime.Task) (*runtime.Exit, er
}
rsp, err := lc.shim.Delete(ctx, empty)
if err != nil {
return nil, errors.New(grpc.ErrorDesc(err))
return nil, errdefs.FromGRPC(err)
}
if err := lc.shim.KillShim(ctx); err != nil {
log.G(ctx).WithError(err).Error("failed to kill shim")

2
linux/shim/exec.go
View File

@@ -164,7 +164,7 @@ func (e *execProcess) Resize(ws console.WinSize) error {
func (e *execProcess) Kill(ctx context.Context, sig uint32, _ bool) error {
if err := unix.Kill(e.pid, syscall.Signal(sig)); err != nil {
return checkKillError(err)
return errors.Wrapf(checkKillError(err), "exec kill error")
}
return nil
}

6
linux/shim/init.go
View File

@@ -17,12 +17,12 @@ import (
"golang.org/x/sys/unix"
"github.com/containerd/console"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/identifiers"
"github.com/containerd/containerd/linux/runcopts"
shimapi "github.com/containerd/containerd/linux/shim/v1"
"github.com/containerd/containerd/log"
"github.com/containerd/containerd/mount"
"github.com/containerd/containerd/runtime"
"github.com/containerd/containerd/typeurl"
"github.com/containerd/fifo"
runc "github.com/containerd/go-runc"
@@ -388,7 +388,7 @@ func checkKillError(err error) error {
return nil
}
if strings.Contains(err.Error(), "os: process already finished") || err == unix.ESRCH {
return runtime.ErrProcessExited
return errors.Wrapf(errdefs.ErrNotFound, "process already finished")
}
return err
return errors.Wrapf(err, "unknown error after kill")
}

48
linux/shim/service.go
View File

@@ -27,10 +27,6 @@ import (
"golang.org/x/net/context"
)
const (
ErrContainerNotCreated = "container hasn't been created yet"
)
var empty = &google_protobuf.Empty{}
const RuncRoot = "/run/containerd/runc"
@@ -116,7 +112,7 @@ func (s *Service) Create(ctx context.Context, r *shimapi.CreateTaskRequest) (*sh
func (s *Service) Start(ctx context.Context, r *google_protobuf.Empty) (*google_protobuf.Empty, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := s.initProcess.Start(ctx); err != nil {
return nil, err
@@ -130,7 +126,7 @@ func (s *Service) Start(ctx context.Context, r *google_protobuf.Empty) (*google_
func (s *Service) Delete(ctx context.Context, r *google_protobuf.Empty) (*shimapi.DeleteResponse, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
p := s.initProcess
// TODO (@crosbymichael): how to handle errors here
@@ -153,7 +149,7 @@ func (s *Service) Delete(ctx context.Context, r *google_protobuf.Empty) (*shimap
func (s *Service) DeleteProcess(ctx context.Context, r *shimapi.DeleteProcessRequest) (*shimapi.DeleteResponse, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if r.ID == s.initProcess.id {
return nil, grpc.Errorf(codes.InvalidArgument, "cannot delete init process with DeleteProcess")
@@ -162,7 +158,7 @@ func (s *Service) DeleteProcess(ctx context.Context, r *shimapi.DeleteProcessReq
p, ok := s.processes[r.ID]
s.mu.Unlock()
if !ok {
return nil, fmt.Errorf("process %s not found", r.ID)
return nil, errors.Wrapf(errdefs.ErrNotFound, "process %s not found", r.ID)
}
// TODO (@crosbymichael): how to handle errors here
p.Delete(ctx)
@@ -178,14 +174,14 @@ func (s *Service) DeleteProcess(ctx context.Context, r *shimapi.DeleteProcessReq
func (s *Service) Exec(ctx context.Context, r *shimapi.ExecProcessRequest) (*shimapi.ExecProcessResponse, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
s.mu.Lock()
defer s.mu.Unlock()
process, err := newExecProcess(ctx, s.path, r, s.initProcess, r.ID)
if err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
pid := process.Pid()
cmd := &reaper.Cmd{
@@ -207,7 +203,7 @@ func (s *Service) Exec(ctx context.Context, r *shimapi.ExecProcessRequest) (*shi
func (s *Service) ResizePty(ctx context.Context, r *shimapi.ResizePtyRequest) (*google_protobuf.Empty, error) {
if r.ID == "" {
return nil, grpc.Errorf(codes.InvalidArgument, "id not provided")
return nil, errdefs.ToGRPCf(errdefs.ErrInvalidArgument, "id not provided")
}
ws := console.WinSize{
Width: uint16(r.Width),
@@ -220,18 +216,18 @@ func (s *Service) ResizePty(ctx context.Context, r *shimapi.ResizePtyRequest) (*
return nil, errors.Errorf("process does not exist %s", r.ID)
}
if err := p.Resize(ws); err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
func (s *Service) State(ctx context.Context, r *shimapi.StateRequest) (*shimapi.StateResponse, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
p, ok := s.processes[r.ID]
if !ok {
return nil, grpc.Errorf(codes.NotFound, "process id %s not found", r.ID)
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "process id %s not found", r.ID)
}
st, err := s.initProcess.ContainerStatus(ctx)
if err != nil {
@@ -263,7 +259,7 @@ func (s *Service) State(ctx context.Context, r *shimapi.StateRequest) (*shimapi.
func (s *Service) Pause(ctx context.Context, r *google_protobuf.Empty) (*google_protobuf.Empty, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := s.initProcess.Pause(ctx); err != nil {
return nil, err
@@ -276,7 +272,7 @@ func (s *Service) Pause(ctx context.Context, r *google_protobuf.Empty) (*google_
func (s *Service) Resume(ctx context.Context, r *google_protobuf.Empty) (*google_protobuf.Empty, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := s.initProcess.Resume(ctx); err != nil {
return nil, err
@@ -289,20 +285,20 @@ func (s *Service) Resume(ctx context.Context, r *google_protobuf.Empty) (*google
func (s *Service) Kill(ctx context.Context, r *shimapi.KillRequest) (*google_protobuf.Empty, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if r.ID == "" {
if err := s.initProcess.Kill(ctx, r.Signal, r.All); err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
p, ok := s.processes[r.ID]
if !ok {
return nil, grpc.Errorf(codes.NotFound, "process id %s not found", r.ID)
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "process id %s not found", r.ID)
}
if err := p.Kill(ctx, r.Signal, r.All); err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
@@ -310,7 +306,7 @@ func (s *Service) Kill(ctx context.Context, r *shimapi.KillRequest) (*google_pro
func (s *Service) ListPids(ctx context.Context, r *shimapi.ListPidsRequest) (*shimapi.ListPidsResponse, error) {
pids, err := s.getContainerPids(ctx, r.ID)
if err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
return &shimapi.ListPidsResponse{
Pids: pids,
@@ -320,7 +316,7 @@ func (s *Service) ListPids(ctx context.Context, r *shimapi.ListPidsRequest) (*sh
func (s *Service) CloseIO(ctx context.Context, r *shimapi.CloseIORequest) (*google_protobuf.Empty, error) {
p, ok := s.processes[r.ID]
if !ok {
return nil, grpc.Errorf(codes.NotFound, "process does not exist %s", r.ID)
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "process does not exist %s", r.ID)
}
if err := p.Stdin().Close(); err != nil {
return nil, err
@@ -330,10 +326,10 @@ func (s *Service) CloseIO(ctx context.Context, r *shimapi.CloseIORequest) (*goog
func (s *Service) Checkpoint(ctx context.Context, r *shimapi.CheckpointTaskRequest) (*google_protobuf.Empty, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := s.initProcess.Checkpoint(ctx, r); err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
s.events <- &events.TaskCheckpointed{
ContainerID: s.id,
@@ -349,10 +345,10 @@ func (s *Service) ShimInfo(ctx context.Context, r *google_protobuf.Empty) (*shim
func (s *Service) Update(ctx context.Context, r *shimapi.UpdateTaskRequest) (*google_protobuf.Empty, error) {
if s.initProcess == nil {
return nil, errors.New(ErrContainerNotCreated)
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := s.initProcess.Update(ctx, r); err != nil {
return nil, err
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}

26
linux/task.go
View File

@@ -5,14 +5,12 @@ package linux
import (
"context"
"google.golang.org/grpc"
"github.com/containerd/containerd/api/types/task"
"github.com/containerd/containerd/errdefs"
client "github.com/containerd/containerd/linux/shim"
shim "github.com/containerd/containerd/linux/shim/v1"
"github.com/containerd/containerd/runtime"
"github.com/gogo/protobuf/types"
"github.com/pkg/errors"
)
type Task struct {
@@ -44,7 +42,7 @@ func (t *Task) Info() runtime.TaskInfo {
func (t *Task) Start(ctx context.Context) error {
_, err := t.shim.Start(ctx, empty)
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}
@@ -54,7 +52,7 @@ func (t *Task) State(ctx context.Context) (runtime.State, error) {
ID: t.id,
})
if err != nil {
return runtime.State{}, errors.New(grpc.ErrorDesc(err))
return runtime.State{}, errdefs.FromGRPC(err)
}
var status runtime.Status
switch response.Status {
@@ -81,7 +79,7 @@ func (t *Task) State(ctx context.Context) (runtime.State, error) {
func (t *Task) Pause(ctx context.Context) error {
_, err := t.shim.Pause(ctx, empty)
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}
@@ -89,7 +87,7 @@ func (t *Task) Pause(ctx context.Context) error {
func (t *Task) Resume(ctx context.Context) error {
_, err := t.shim.Resume(ctx, empty)
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}
@@ -101,7 +99,7 @@ func (t *Task) Kill(ctx context.Context, signal uint32, all bool) error {
All: all,
})
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
return errdefs.FromGRPC(err)
}
return err
}
@@ -116,7 +114,7 @@ func (t *Task) Exec(ctx context.Context, id string, opts runtime.ExecOpts) (runt
Spec: opts.Spec,
}
if _, err := t.shim.Exec(ctx, request); err != nil {
return nil, errors.New(grpc.ErrorDesc(err))
return nil, errdefs.FromGRPC(err)
}
return &Process{
id: id,
@@ -130,7 +128,7 @@ func (t *Task) Pids(ctx context.Context) ([]uint32, error) {
ID: t.id,
})
if err != nil {
return nil, errors.New(grpc.ErrorDesc(err))
return nil, errdefs.FromGRPC(err)
}
return resp.Pids, nil
}
@@ -142,7 +140,7 @@ func (t *Task) ResizePty(ctx context.Context, size runtime.ConsoleSize) error {
Height: size.Height,
})
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}
@@ -153,7 +151,7 @@ func (t *Task) CloseIO(ctx context.Context) error {
Stdin: true,
})
if err != nil {
err = errors.New(grpc.ErrorDesc(err))
err = errdefs.FromGRPC(err)
}
return err
}
@@ -164,7 +162,7 @@ func (t *Task) Checkpoint(ctx context.Context, path string, options *types.Any)
Options: options,
}
if _, err := t.shim.Checkpoint(ctx, r); err != nil {
return errors.New(grpc.ErrorDesc(err))
return errdefs.FromGRPC(err)
}
return nil
}
@@ -174,7 +172,7 @@ func (t *Task) DeleteProcess(ctx context.Context, id string) (*runtime.Exit, err
ID: id,
})
if err != nil {
return nil, errors.New(grpc.ErrorDesc(err))
return nil, errdefs.FromGRPC(err)
}
return &runtime.Exit{
Status: r.ExitStatus,