mirror of
https://github.com/yunionio/cloudpods.git
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100 lines
3.0 KiB
Go
100 lines
3.0 KiB
Go
// Copyright 2019 Yunion
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package splitable
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import (
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"database/sql"
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"time"
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"yunion.io/x/pkg/errors"
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"yunion.io/x/sqlchemy"
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)
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type STableMetadata struct {
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Id int64 `primary:"true" auto_increment:"true"`
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Table string `width:"64" charset:"ascii"`
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Start int64 `nullable:"true"`
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End int64 `nullable:"true"`
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Count uint64 `nullable:"true"`
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StartDate time.Time `nullable:"true"`
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EndDate time.Time `nullable:"true"`
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Deleted bool `nullable:"false"`
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DeleteAt time.Time `nullable:"true"`
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CreatedAt time.Time `nullable:"false" created_at:"true"`
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}
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func (spec *SSplitTableSpec) getTableLastMeta() (*STableMetadata, error) {
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return spec.GetTableMetaByTime(time.Time{})
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}
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func (spec *SSplitTableSpec) GetTableMetaByTime(recordTime time.Time) (*STableMetadata, error) {
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q := spec.metaSpec.Query().Desc("id").IsFalse("deleted")
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if !recordTime.IsZero() {
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q = q.LE("start_date", recordTime.Add(time.Second))
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}
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meta := new(STableMetadata)
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err := q.First(meta)
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return meta, err
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}
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type ISplitTableObject interface {
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GetRecordTime() time.Time
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}
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func (spec *SSplitTableSpec) GetTableMetaByObject(obj ISplitTableObject) (*STableMetadata, error) {
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return spec.GetTableMetaByTime(obj.GetRecordTime())
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}
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func (spec *SSplitTableSpec) getTableMetasForInit() ([]STableMetadata, error) {
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q := spec.metaSpec.Query().Asc("id").IsFalse("deleted")
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q = q.AppendField(q.Field("table"))
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q = q.AppendField(q.Field("start"))
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metas := make([]STableMetadata, 0)
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err := q.All(&metas)
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if err != nil && errors.Cause(err) != sql.ErrNoRows {
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return nil, errors.Wrap(err, "query metadata")
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}
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return metas, nil
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}
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func (spec *SSplitTableSpec) GetTableMetas() ([]STableMetadata, error) {
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q := spec.metaSpec.Query().Asc("id").IsFalse("deleted")
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metas := make([]STableMetadata, 0)
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err := q.All(&metas)
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if err != nil && errors.Cause(err) != sql.ErrNoRows {
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return nil, errors.Wrap(err, "query metadata")
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}
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for i := 0; i < len(metas); i++ {
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if metas[i].Count <= 0 {
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// fix count
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tbl := spec.GetTableSpec(metas[i]).Instance()
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cnt, err := tbl.Query().CountWithError()
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if err != nil {
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return nil, errors.Wrap(err, "CountWithError")
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}
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spec.metaSpec.Update(&metas[i], func() error {
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metas[i].Count = uint64(cnt)
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return nil
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})
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}
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}
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return metas, nil
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}
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func (spec *SSplitTableSpec) GetTableSpec(meta STableMetadata) *sqlchemy.STableSpec {
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tbSpec := *spec.tableSpec
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return tbSpec.Clone(meta.Table, meta.Start)
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}
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