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c083ca1d08
- based on dragonboat lib (https://github.com/lni/dragonboat) - add extended config with validate - add backend managment to allow simple implementation for backend simple, cocurrent & disk - has no backend implemented and must be a lib for a cluster mode of one backend
108 lines
3.6 KiB
Go
108 lines
3.6 KiB
Go
/***********************************************************************************************************************
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*
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* MIT License
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*
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* Copyright (c) 2021 Nicolas JUHEL
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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**********************************************************************************************************************/
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package cluster
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import (
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"fmt"
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"github.com/go-playground/validator/v10"
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dgbcfg "github.com/lni/dragonboat/v3/config"
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liberr "github.com/nabbar/golib/errors"
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)
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type ConfigEngine struct {
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// ExecShards is the number of execution shards in the first stage of the
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// execution engine. Default value is 16. Once deployed, this value can not
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// be changed later.
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ExecShards uint64 `mapstructure:"exec_shards" json:"exec_shards" yaml:"exec_shards" toml:"exec_shards"`
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// CommitShards is the number of commit shards in the second stage of the
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// execution engine. Default value is 16.
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CommitShards uint64 `mapstructure:"commit_shards" json:"commit_shards" yaml:"commit_shards" toml:"commit_shards"`
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// ApplyShards is the number of apply shards in the third stage of the
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// execution engine. Default value is 16.
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ApplyShards uint64 `mapstructure:"apply_shards" json:"apply_shards" yaml:"apply_shards" toml:"apply_shards"`
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// SnapshotShards is the number of snapshot shards in the forth stage of the
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// execution engine. Default value is 48.
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SnapshotShards uint64 `mapstructure:"snapshot_shards" json:"snapshot_shards" yaml:"snapshot_shards" toml:"snapshot_shards"`
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// CloseShards is the number of close shards used for closing stopped
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// state machines. Default value is 32.
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CloseShards uint64 `mapstructure:"close_shards" json:"close_shards" yaml:"close_shards" toml:"close_shards"`
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}
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func (c ConfigEngine) GetDGBConfigEngine() dgbcfg.EngineConfig {
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d := dgbcfg.EngineConfig{}
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if c.ExecShards > 0 {
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d.ExecShards = c.ExecShards
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}
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if c.CommitShards > 0 {
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d.CommitShards = c.CommitShards
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}
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if c.ApplyShards > 0 {
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d.ApplyShards = c.ApplyShards
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}
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if c.SnapshotShards > 0 {
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d.SnapshotShards = c.SnapshotShards
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}
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if c.CloseShards > 0 {
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d.CloseShards = c.CloseShards
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}
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return d
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}
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func (c ConfigEngine) Validate() liberr.Error {
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val := validator.New()
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err := val.Struct(c)
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if e, ok := err.(*validator.InvalidValidationError); ok {
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return ErrorValidateEngine.ErrorParent(e)
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}
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out := ErrorValidateEngine.Error(nil)
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for _, e := range err.(validator.ValidationErrors) {
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//nolint goerr113
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out.AddParent(fmt.Errorf("config field '%s' is not validated by constraint '%s'", e.Field(), e.ActualTag()))
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}
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if out.HasParent() {
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return out
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}
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return nil
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}
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