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Merge pull request #91 from illacloud/develop
feat! & fix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // Copyright 2022 The ILLA Authors. | ||
| // | ||
| // 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 clickhouse | ||
|
|
||
| import ( | ||
| "crypto/tls" | ||
| "crypto/x509" | ||
| "database/sql" | ||
| "encoding/pem" | ||
| "errors" | ||
| "fmt" | ||
|
|
||
| "github.com/ClickHouse/clickhouse-go/v2" | ||
| "github.com/mitchellh/mapstructure" | ||
| ) | ||
|
|
||
| const ( | ||
| tableSQLStr = "SHOW TABLES" | ||
| columnSQLStr = "DESCRIBE TABLE " | ||
| ) | ||
|
|
||
| func (c *Connector) getConnectionWithOptions(resourceOptions map[string]interface{}) (*sql.DB, error) { | ||
| if err := mapstructure.Decode(resourceOptions, &c.ResourceOpts); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| t := &tls.Config{} | ||
| if c.ResourceOpts.SSL.SSL && c.ResourceOpts.SSL.SelfSigned { | ||
| pool := x509.NewCertPool() | ||
| if ok := pool.AppendCertsFromPEM([]byte(c.ResourceOpts.SSL.CACert)); !ok { | ||
| return nil, errors.New("clickhouse SSL/TLS Connection failed") | ||
| } | ||
| t.RootCAs = pool | ||
| ccBlock, _ := pem.Decode([]byte(c.ResourceOpts.SSL.ClientCert)) | ||
| ckBlock, _ := pem.Decode([]byte(c.ResourceOpts.SSL.PrivateKey)) | ||
| if (ccBlock != nil && ccBlock.Type == "CERTIFICATE") && (ckBlock != nil || ckBlock.Type == "PRIVATE KEY") { | ||
| cert, err := tls.X509KeyPair([]byte(c.ResourceOpts.SSL.ClientCert), []byte(c.ResourceOpts.SSL.PrivateKey)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| t.Certificates = []tls.Certificate{cert} | ||
| } | ||
| } | ||
|
|
||
| db := clickhouse.OpenDB(&clickhouse.Options{ | ||
| Addr: []string{fmt.Sprintf("%s:%d", c.ResourceOpts.Host, c.ResourceOpts.Port)}, | ||
| Auth: clickhouse.Auth{ | ||
| Database: c.ResourceOpts.DatabaseName, | ||
| Username: c.ResourceOpts.Username, | ||
| Password: c.ResourceOpts.Password, | ||
| }, | ||
| TLS: t, | ||
| }) | ||
|
|
||
| return db, nil | ||
| } | ||
|
|
||
| func tablesInfo(db *sql.DB, dbName string) []string { | ||
| tableNames := make([]string, 0, 0) | ||
| tableRows, err := db.Query(tableSQLStr, dbName) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
| for tableRows.Next() { | ||
| var tableName string | ||
| err = tableRows.Scan(&tableName) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
|
|
||
| tableNames = append(tableNames, tableName) | ||
| } | ||
|
|
||
| return tableNames | ||
| } | ||
|
|
||
| func fieldsInfo(db *sql.DB, dbName string, tableNames []string) map[string]interface{} { | ||
| columns := make(map[string]interface{}) | ||
| for _, tableName := range tableNames { | ||
| tmpSQLStr := columnSQLStr + tableName | ||
| columnRows, err := db.Query(tmpSQLStr) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
| tables := make(map[string]interface{}) | ||
| for columnRows.Next() { | ||
| var Name, Type, defaultType, defaultExpression, ttlExpression, comment, codecExpression string | ||
| err = columnRows.Scan(&Name, &Type, &defaultType, &defaultExpression, &ttlExpression, &comment, &codecExpression) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
| tables[Name] = map[string]string{"data_type": Type} | ||
|
|
||
| } | ||
| columns[tableName] = tables | ||
| } | ||
| return columns | ||
| } |
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