JCS-pub/common/pkgs/ioswitch2/ops2/public_store.go

package ops2

import (
	"fmt"
	"io"

	"gitlink.org.cn/cloudream/common/pkgs/future"
	"gitlink.org.cn/cloudream/common/pkgs/ioswitch/dag"
	"gitlink.org.cn/cloudream/common/pkgs/ioswitch/exec"
	"gitlink.org.cn/cloudream/common/pkgs/logger"
	"gitlink.org.cn/cloudream/common/utils/io2"
	clitypes "gitlink.org.cn/cloudream/jcs-pub/client/types"
	"gitlink.org.cn/cloudream/jcs-pub/common/pkgs/ioswitch2"
	"gitlink.org.cn/cloudream/jcs-pub/common/pkgs/storage/pool"
)

func init() {
	exec.UseOp[*BaseWrite]()
	exec.UseOp[*BaseRead]()
	exec.UseVarValue[*FileInfoValue]()
}

type FileInfoValue struct {
	Hash clitypes.FileHash `json:"hash"`
	Size int64             `json:"size"`
}

func (v *FileInfoValue) Clone() exec.VarValue {
	return &FileInfoValue{Hash: v.Hash, Size: v.Size}
}

type BaseRead struct {
	Output    exec.VarID
	UserSpace clitypes.UserSpaceDetail
	Path      string
}

func (o *BaseRead) Execute(ctx *exec.ExecContext, e *exec.Executor) error {
	logger.
		WithField("Output", o.Output).
		WithField("UserSpace", o.UserSpace).
		WithField("Path", o.Path).
		Debug("base read")
	defer logger.Debug("base read end")

	stgPool, err := exec.GetValueByType[*pool.Pool](ctx)
	if err != nil {
		return fmt.Errorf("getting storage pool: %w", err)
	}

	store, err := stgPool.GetBaseStore(&o.UserSpace)
	if err != nil {
		return fmt.Errorf("getting base store of storage %v: %w", o.UserSpace, err)
	}

	stream, err := store.Read(o.Path)
	if err != nil {
		return fmt.Errorf("reading object %v: %w", o.Path, err)
	}

	fut := future.NewSetVoid()
	output := &exec.StreamValue{
		Stream: io2.AfterReadClosed(stream, func(closer io.ReadCloser) {
			fut.SetVoid()
		}),
	}

	e.PutVar(o.Output, output)
	return fut.Wait(ctx.Context)
}

func (o *BaseRead) String() string {
	return fmt.Sprintf("PublicRead %v:%v -> %v", o.UserSpace, o.Path, o.Output)
}

type BaseWrite struct {
	Input     exec.VarID
	UserSpace clitypes.UserSpaceDetail
	Path      string
	FileInfo  exec.VarID
}

func (o *BaseWrite) Execute(ctx *exec.ExecContext, e *exec.Executor) error {
	logger.
		WithField("Input", o.Input).
		Debugf("write file to base store")
	defer logger.Debugf("write file to base store finished")

	stgPool, err := exec.GetValueByType[*pool.Pool](ctx)
	if err != nil {
		return fmt.Errorf("getting storage pool: %w", err)
	}

	store, err := stgPool.GetBaseStore(&o.UserSpace)
	if err != nil {
		return fmt.Errorf("getting base store of storage %v: %w", o.UserSpace, err)
	}

	input, err := exec.BindVar[*exec.StreamValue](e, ctx.Context, o.Input)
	if err != nil {
		return err
	}
	defer input.Stream.Close()

	info, err := store.Write(o.Path, input.Stream)
	if err != nil {
		return err
	}

	e.PutVar(o.FileInfo, &FileInfoValue{
		Hash: info.Hash,
		Size: info.Size,
	})
	return nil
}

func (o *BaseWrite) String() string {
	return fmt.Sprintf("PublicWrite %v -> %v:%v", o.Input, o.UserSpace, o.Path)
}

type BaseReadNode struct {
	dag.NodeBase
	From      ioswitch2.From
	UserSpace clitypes.UserSpaceDetail
	Path      string
}

func (b *GraphNodeBuilder) NewPublicRead(from ioswitch2.From, userSpace clitypes.UserSpaceDetail, path string) *BaseReadNode {
	node := &BaseReadNode{
		From:      from,
		UserSpace: userSpace,
		Path:      path,
	}
	b.AddNode(node)

	node.OutputStreams().Init(node, 1)
	return node
}

func (t *BaseReadNode) GetFrom() ioswitch2.From {
	return t.From
}

func (t *BaseReadNode) Output() dag.StreamOutputSlot {
	return dag.StreamOutputSlot{
		Node:  t,
		Index: 0,
	}
}

func (t *BaseReadNode) GenerateOp() (exec.Op, error) {
	return &BaseRead{
		Output:    t.Output().Var().VarID,
		UserSpace: t.UserSpace,
		Path:      t.Path,
	}, nil
}

type BaseWriteNode struct {
	dag.NodeBase
	To               ioswitch2.To
	UserSpace        clitypes.UserSpaceDetail
	Path             string
	FileInfoStoreKey string
}

func (b *GraphNodeBuilder) NewPublicWrite(to ioswitch2.To, userSpace clitypes.UserSpaceDetail, path string) *BaseWriteNode {
	node := &BaseWriteNode{
		To:        to,
		UserSpace: userSpace,
		Path:      path,
	}
	b.AddNode(node)

	node.InputStreams().Init(1)
	return node
}

func (t *BaseWriteNode) GetTo() ioswitch2.To {
	return t.To
}

func (t *BaseWriteNode) SetInput(input *dag.StreamVar) {
	input.To(t, 0)
}

func (t *BaseWriteNode) Input() dag.StreamInputSlot {
	return dag.StreamInputSlot{
		Node:  t,
		Index: 0,
	}
}

func (t *BaseWriteNode) FileInfoVar() *dag.ValueVar {
	return t.OutputValues().Get(0)
}

func (t *BaseWriteNode) GenerateOp() (exec.Op, error) {
	return &BaseWrite{
		Input:     t.InputStreams().Get(0).VarID,
		UserSpace: t.UserSpace,
		Path:      t.Path,
		FileInfo:  t.FileInfoVar().VarID,
	}, nil
}