// GetValue - Returns the key value from rdpg.config
func GetValue(keyName string) (defaultBasePath string, err error) {
address := `127.0.0.1`
sq := fmt.Sprintf(`SELECT value AS keyvalue FROM rdpg.config WHERE key = '%s' AND cluster_id = '%s' ; `, keyName, globals.ClusterID)
keyValue, err := rdpgpg.GetList(address, sq)
if err != nil {
if err == sql.ErrNoRows {
log.Error(fmt.Sprintf("config.GetValue ! No default value found for %s ! %s", keyName, err))
} else {
log.Error(fmt.Sprintf("config.GetValue ! Error when retrieving key value %s ! %s", keyName, err))
}
return ``, err
}
if len(keyValue) == 0 {
log.Error(fmt.Sprintf("config.GetValue ! No value found for %s ! %s", keyName, err))
return ``, fmt.Errorf("Key name %s not found", keyName)
}
return keyValue[0], nil
}
//ScheduleNewDatabaseBackups - Responsible for adding any databases which are in
//cfsb.instances and aren't already scheduled in tasks.schedules
func (t *Task) ScheduleNewDatabaseBackups() (err error) {
//SELECT active databases in cfsb.instances which aren't in tasks.schedules
address := `127.0.0.1`
sq := `SELECT name FROM ( (SELECT dbname AS name FROM cfsb.instances WHERE effective_at IS NOT NULL AND decommissioned_at IS NULL) EXCEPT (SELECT data AS name FROM tasks.schedules WHERE action = 'BackupDatabase' ) ) AS missing_databases; `
listMissingDatabases, err := rdpgpg.GetList(address, sq)
if err != nil {
log.Error(fmt.Sprintf(`tasks.Task<%d>#ScheduleNewDatabaseBackups() Failed to load list of databases ! %s`, t.ID, err))
}
for _, databaseName := range listMissingDatabases {
log.Trace(fmt.Sprintf("tasks.BackupDatabase() > Attempting to add %s", databaseName))
nodeType := `write`
if t.ClusterService == "pgbdr" {
nodeType = `read`
}
newScheduledTask := Schedule{ClusterID: ClusterID, ClusterService: t.ClusterService, Role: `service`, Action: `BackupDatabase`, Data: databaseName, NodeType: nodeType, Frequency: `1 hour`, Enabled: true}
err = newScheduledTask.Add()
}
return
}
//BackupDatabase - Perform a schema and database backup of a given database to local disk
func (t *Task) BackupDatabase() (err error) {
b := backupParams{}
//Make sure database actually exists first.
b.databaseName = t.Data
if b.databaseName != "rdpg" {
address := `127.0.0.1`
sq := fmt.Sprintf(`SELECT 1 FROM cfsb.instances WHERE effective_at IS NOT NULL AND decommissioned_at IS NULL AND dbname = '%s';`, b.databaseName)
databasesWithThatName, err := rdpgpg.GetList(address, sq)
if err != nil {
log.Error(fmt.Sprintf("Tasks.BackupDatabase() utils/backup.GetList(%s, %s) Error trying to query for database.", address, b.databaseName))
return err
}
if len(databasesWithThatName) == 0 {
log.Error(fmt.Sprintf("Task.BackupDatabase() Attempt to back up non-existant or non-commissioned database with name: %s", b.databaseName))
return errors.New("Database doesn't exist.")
}
}
lockAcquired, sessID := acquireBackupLock(b.databaseName)
if !lockAcquired {
log.Warn("Aborting Backup: Unable to acquire database lock. Is another backup already in progress?")
return errors.New("Unable to acquire database lock")
}
defer releaseBackupLock(b.databaseName, sessID)
b.pgDumpPath, err = config.GetValue(`pgDumpBinaryLocation`)
if err != nil {
return err
}
b.pgPort, err = config.GetValue(`BackupPort`)
if err != nil {
return err
}
b.basePath, err = config.GetValue(`BackupsPath`)
if err != nil {
return err
}
b.node, err = rdpgconsul.GetNode()
if err != nil {
return err
}
b.baseFileName = getBaseFileName() //Use this to keep schema and data file names the same
err = createTargetFolder(b.basePath + `/` + b.databaseName)
if err != nil {
log.Error(fmt.Sprintf("tasks.BackupDatabase() Could not create target folder %s ! %s", b.basePath, err))
return err
}
schemaDataFileHistory, err := createSchemaAndDataFile(b)
if err != nil {
log.Error(fmt.Sprintf("tasks.BackupDatabase() Could not create schema and data file for database %s ! %s", b.databaseName, err))
schemaDataFileHistory.Status = `error`
}
err = history.InsertBackupHistory(schemaDataFileHistory)
if b.databaseName == `rdpg` {
globalsFileHistory, err := createGlobalsFile(b)
if err != nil {
log.Error(fmt.Sprintf("tasks.BackupDatabase() Could not create globals file for database %s ! %s", b.databaseName, err))
globalsFileHistory.Status = `error`
}
err = history.InsertBackupHistory(globalsFileHistory)
}
return
}
