/
msg_datasize.go
109 lines (90 loc) · 3.2 KB
/
msg_datasize.go
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// Copyright 2021 FerretDB Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package handler
import (
"context"
"fmt"
"time"
"github.com/FerretDB/FerretDB/internal/backends"
"github.com/FerretDB/FerretDB/internal/handler/common"
"github.com/FerretDB/FerretDB/internal/handler/handlererrors"
"github.com/FerretDB/FerretDB/internal/handler/handlerparams"
"github.com/FerretDB/FerretDB/internal/types"
"github.com/FerretDB/FerretDB/internal/util/lazyerrors"
"github.com/FerretDB/FerretDB/internal/util/must"
"github.com/FerretDB/FerretDB/internal/wire"
)
// MsgDataSize implements `dataSize` command.
func (h *Handler) MsgDataSize(ctx context.Context, msg *wire.OpMsg) (*wire.OpMsg, error) {
document, err := msg.Document()
if err != nil {
return nil, lazyerrors.Error(err)
}
if err = common.Unimplemented(document, "keyPattern", "min", "max"); err != nil {
return nil, err
}
common.Ignored(document, h.L, "estimate")
var namespaceParam any
if namespaceParam, err = document.Get(document.Command()); err != nil {
return nil, err
}
namespace, ok := namespaceParam.(string)
if !ok {
return nil, handlererrors.NewCommandErrorMsgWithArgument(
handlererrors.ErrTypeMismatch,
fmt.Sprintf("collection name has invalid type %s", handlerparams.AliasFromType(namespaceParam)),
document.Command(),
)
}
dbName, cName, err := handlerparams.SplitNamespace(namespace, document.Command())
if err != nil {
return nil, err
}
db, err := h.b.Database(dbName)
if err != nil {
if backends.ErrorCodeIs(err, backends.ErrorCodeDatabaseNameIsInvalid) {
msg := fmt.Sprintf("Invalid database specified '%s'", dbName)
return nil, handlererrors.NewCommandErrorMsgWithArgument(handlererrors.ErrInvalidNamespace, msg, document.Command())
}
return nil, lazyerrors.Error(err)
}
c, err := db.Collection(cName)
if err != nil {
if backends.ErrorCodeIs(err, backends.ErrorCodeCollectionNameIsInvalid) {
msg := fmt.Sprintf("Invalid collection name: %s", cName)
return nil, handlererrors.NewCommandErrorMsgWithArgument(handlererrors.ErrInvalidNamespace, msg, document.Command())
}
return nil, lazyerrors.Error(err)
}
started := time.Now()
stats, err := c.Stats(ctx, new(backends.CollectionStatsParams))
if backends.ErrorCodeIs(err, backends.ErrorCodeCollectionDoesNotExist) {
stats = new(backends.CollectionStatsResult)
err = nil
}
if err != nil {
return nil, lazyerrors.Error(err)
}
var reply wire.OpMsg
must.NoError(reply.SetSections(wire.MakeOpMsgSection(
must.NotFail(types.NewDocument(
"estimate", false,
"size", stats.SizeTotal,
"numObjects", stats.CountDocuments,
"millis", int32(time.Since(started).Milliseconds()),
"ok", float64(1),
)),
)))
return &reply, nil
}