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default_sync_config.go
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/
default_sync_config.go
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package rule
import (
"encoding/json"
"github.com/juju/errors"
)
type defaultTableConfig struct {
Rewrite string `json:"rewrite" toml:"rewrite"`
IndexKeys []string `json:"index-keys" toml:"index-keys"`
}
type defaultDatabaseConfig struct {
Rewrite string `json:"rewrite" toml:"rewrite"`
Tables map[string]*defaultTableConfig `json:"tables"`
}
// DefaultSyncConfig is a default sync config
type DefaultSyncConfig struct {
Databases map[string]*defaultDatabaseConfig `json:"databases"`
}
// NewDefaultSyncConfig creates a new DefaultSyncConfig
func NewDefaultSyncConfig() *DefaultSyncConfig {
return &DefaultSyncConfig{}
}
// ParseJSON parses the json data to SyncDesc slice to create DefaultSyncRule
func (c *DefaultSyncConfig) ParseJSON(data []byte) ([]*SyncDesc, error) {
if nil == data ||
0 == len(data) {
return nil, nil
}
var err error
err = json.Unmarshal(data, c)
if nil != err {
return nil, errors.Trace(err)
}
sds, err := c.ToSyncDescs()
if nil != err {
return nil, errors.Trace(err)
}
return sds, nil
}
// ToSyncDescs convert self to SyncDesc slice
func (c *DefaultSyncConfig) ToSyncDescs() ([]*SyncDesc, error) {
if nil == c.Databases {
return nil, nil
}
sds := make([]*SyncDesc, 0, 32)
for dbName, db := range c.Databases {
if nil == db {
// All sync
var desc SyncDesc
desc.Schema = dbName
desc.RewriteSchema = dbName
sds = append(sds, &desc)
continue
}
if nil == db.Tables {
// All sync
var desc SyncDesc
desc.Schema = dbName
desc.RewriteSchema = db.Rewrite
sds = append(sds, &desc)
continue
}
for tblName, tbl := range db.Tables {
var desc SyncDesc
desc.Schema = dbName
desc.RewriteSchema = db.Rewrite
desc.Table = tblName
if nil != tbl {
desc.RewriteTable = tbl.Rewrite
desc.IndexKeys = tbl.IndexKeys
}
sds = append(sds, &desc)
}
}
return sds, nil
}