From 9cbd32bce8524e32711287f86196382517f37562 Mon Sep 17 00:00:00 2001
From: Aleksey Savchuk <a.savchuk@yadro.com>
Date: Fri, 16 Aug 2024 14:33:03 +0300
Subject: [PATCH] [#1223] lens/tui: Add writecache schema

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>
---
 .../internal/schema/writecache/parsers.go     | 63 ++++++++++++++++++
 .../internal/schema/writecache/types.go       | 66 +++++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 cmd/frostfs-lens/internal/schema/writecache/parsers.go
 create mode 100644 cmd/frostfs-lens/internal/schema/writecache/types.go

diff --git a/cmd/frostfs-lens/internal/schema/writecache/parsers.go b/cmd/frostfs-lens/internal/schema/writecache/parsers.go
new file mode 100644
index 000000000..7d70b27b2
--- /dev/null
+++ b/cmd/frostfs-lens/internal/schema/writecache/parsers.go
@@ -0,0 +1,63 @@
+package writecache
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/mr-tron/base58"
+)
+
+var WritecacheParser = common.WithFallback(
+	DefaultBucketParser,
+	common.RawParser.ToFallbackParser(),
+)
+
+func DefaultBucketParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	if value != nil {
+		return nil, nil, errors.New("not a bucket")
+	}
+	if !bytes.Equal(key, []byte{0}) {
+		return nil, nil, errors.New("invalid key")
+	}
+	return &DefaultBucket{}, DefaultRecordParser, nil
+}
+
+func DefaultRecordParser(key, value []byte) (common.SchemaEntry, common.Parser, error) {
+	parts := strings.Split(string(key), "/")
+
+	if len(parts) != 2 {
+		return nil, nil, errors.New("invalid key, expected address string <CID>/<OID>")
+	}
+
+	cnrRaw, err := base58.Decode(parts[0])
+	if err != nil {
+		return nil, nil, errors.New("can't decode CID string")
+	}
+	objRaw, err := base58.Decode(parts[1])
+	if err != nil {
+		return nil, nil, errors.New("can't decode OID string")
+	}
+
+	cnr := cid.ID{}
+	if err := cnr.Decode(cnrRaw); err != nil {
+		return nil, nil, fmt.Errorf("can't decode CID: %w", err)
+	}
+	obj := oid.ID{}
+	if err := obj.Decode(objRaw); err != nil {
+		return nil, nil, fmt.Errorf("can't decode OID: %w", err)
+	}
+
+	var r DefaultRecord
+
+	r.addr.SetContainer(cnr)
+	r.addr.SetObject(obj)
+
+	r.data = value[:]
+
+	return &r, nil, nil
+}
diff --git a/cmd/frostfs-lens/internal/schema/writecache/types.go b/cmd/frostfs-lens/internal/schema/writecache/types.go
new file mode 100644
index 000000000..3f71c5366
--- /dev/null
+++ b/cmd/frostfs-lens/internal/schema/writecache/types.go
@@ -0,0 +1,66 @@
+package writecache
+
+import (
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-lens/internal/schema/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/davecgh/go-spew/spew"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+type (
+	DefaultBucket struct{}
+
+	DefaultRecord struct {
+		addr oid.Address
+		data []byte
+	}
+)
+
+func (b *DefaultBucket) String() string {
+	return common.FormatSimple("0 Default", tcell.ColorLime)
+}
+
+func (r *DefaultRecord) String() string {
+	return fmt.Sprintf(
+		"CID %s OID %s %c Data {...}",
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Container()), tcell.ColorAqua),
+		common.FormatSimple(fmt.Sprintf("%-44s", r.addr.Object()), tcell.ColorAqua),
+		tview.Borders.Vertical,
+	)
+}
+
+func (b *DefaultBucket) DetailedString() string {
+	return spew.Sdump(*b)
+}
+
+func (r *DefaultRecord) DetailedString() string {
+	return spew.Sdump(*r)
+}
+
+func (b *DefaultBucket) Filter(typ string, _ any) common.FilterResult {
+	switch typ {
+	case "cid":
+		return common.Maybe
+	case "oid":
+		return common.Maybe
+	default:
+		return common.No
+	}
+}
+
+func (r *DefaultRecord) Filter(typ string, val any) common.FilterResult {
+	switch typ {
+	case "cid":
+		id := val.(cid.ID)
+		return common.IfThenElse(r.addr.Container().Equals(id), common.Yes, common.No)
+	case "oid":
+		id := val.(oid.ID)
+		return common.IfThenElse(r.addr.Object().Equals(id), common.Yes, common.No)
+	default:
+		return common.No
+	}
+}