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colonies.go
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colonies.go
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package postgresql
import (
"database/sql"
"errors"
"github.com/colonyos/colonies/pkg/core"
_ "github.com/lib/pq"
)
func (db *PQDatabase) AddColony(colony *core.Colony) error {
if colony == nil {
return errors.New("Colony is nil")
}
exitingColony, err := db.GetColonyByName(colony.Name)
if err != nil {
return err
}
if exitingColony != nil {
return errors.New("Colony with name <" + colony.Name + "> already exists")
}
sqlStatement := `INSERT INTO ` + db.dbPrefix + `COLONIES (COLONY_ID, NAME) VALUES ($1, $2)`
_, err = db.postgresql.Exec(sqlStatement, colony.ID, colony.Name)
if err != nil {
return err
}
return nil
}
func (db *PQDatabase) parseColonies(rows *sql.Rows) ([]*core.Colony, error) {
var colonies []*core.Colony
for rows.Next() {
var name string
var colonyID string
if err := rows.Scan(&name, &colonyID); err != nil {
return nil, err
}
colony := core.CreateColony(colonyID, name)
colonies = append(colonies, colony)
}
return colonies, nil
}
func (db *PQDatabase) GetColonies() ([]*core.Colony, error) {
sqlStatement := `SELECT * FROM ` + db.dbPrefix + `COLONIES`
rows, err := db.postgresql.Query(sqlStatement)
if err != nil {
return nil, err
}
defer rows.Close()
return db.parseColonies(rows)
}
func (db *PQDatabase) GetColonyByID(id string) (*core.Colony, error) {
sqlStatement := `SELECT * FROM ` + db.dbPrefix + `COLONIES WHERE COLONY_ID=$1`
rows, err := db.postgresql.Query(sqlStatement, id)
if err != nil {
return nil, err
}
defer rows.Close()
colonies, err := db.parseColonies(rows)
if err != nil {
return nil, err
}
if len(colonies) == 0 {
return nil, nil
}
return colonies[0], nil
}
func (db *PQDatabase) GetColonyByName(name string) (*core.Colony, error) {
sqlStatement := `SELECT * FROM ` + db.dbPrefix + `COLONIES WHERE NAME=$1`
rows, err := db.postgresql.Query(sqlStatement, name)
if err != nil {
return nil, err
}
defer rows.Close()
colonies, err := db.parseColonies(rows)
if err != nil {
return nil, err
}
if len(colonies) == 0 {
return nil, nil
}
return colonies[0], nil
}
func (db *PQDatabase) ChangeColonyID(colonyName string, oldColonyID, newColonyID string) error {
sqlStatement := `UPDATE ` + db.dbPrefix + `COLONIES SET COLONY_ID=$1 WHERE NAME=$2 AND COLONY_ID=$3`
_, err := db.postgresql.Query(sqlStatement, newColonyID, colonyName, oldColonyID)
if err != nil {
return err
}
return nil
}
func (db *PQDatabase) RenameColony(colonyName string, newName string) error {
sqlStatement := `UPDATE ` + db.dbPrefix + `COLONIES SET NAME=$1 WHERE NAME=$2`
_, err := db.postgresql.Exec(sqlStatement, newName, colonyName)
if err != nil {
return err
}
return nil
}
func (db *PQDatabase) RemoveColonyByName(colonyName string) error {
colony, err := db.GetColonyByName(colonyName)
if err != nil {
return err
}
if colony == nil {
return errors.New("Colony does not exists")
}
err = db.RemoveUsersByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveExecutorsByColonyName(colony.Name)
if err != nil {
return err
}
sqlStatement := `DELETE FROM ` + db.dbPrefix + `COLONIES WHERE NAME=$1`
_, err = db.postgresql.Exec(sqlStatement, colonyName)
if err != nil {
return err
}
err = db.RemoveAllProcessesByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveAllProcessGraphsByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveAllGeneratorsByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveAllCronsByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveFunctionsByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveLogsByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveFilesByColonyName(colony.Name)
if err != nil {
return err
}
err = db.RemoveSnapshotsByColonyName(colony.Name)
if err != nil {
return err
}
return nil
}
func (db *PQDatabase) CountColonies() (int, error) {
colonies, err := db.GetColonies()
if err != nil {
return -1, err
}
return len(colonies), nil
}