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edgeboxctl
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Write queries using prepared statements, better error handling

pull/8/head
Paulo Truta 2021-05-08 20:42:07 +00:00
parent d975710445
commit f238b3fa46
1 changed files with 38 additions and 19 deletions
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57
internal/tasks/tasks.go
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@ -68,10 +68,6 @@ func GetNextTask() Task {
panic(err.Error()) panic(err.Error())
} }
// defer the close till after the main function has finished executing
defer db.Close()
// perform a db.Query insert
results, err := db.Query("SELECT * FROM task WHERE status = 0 ORDER BY created ASC LIMIT 1;") results, err := db.Query("SELECT * FROM task WHERE status = 0 ORDER BY created ASC LIMIT 1;")
// if there is an error inserting, handle it // if there is an error inserting, handle it
@ -90,8 +86,8 @@ func GetNextTask() Task {
} }
} }
// be careful deferring Queries if you are using transactions results.Close()
defer results.Close() db.Close()
return task return task
@ -106,12 +102,14 @@ func ExecuteTask(task Task) Task {
panic(err.Error()) panic(err.Error())
} }
defer db.Close() statement, err := db.Prepare("UPDATE task SET status = ?, updated = ? WHERE ID = ?") // Prepare SQL Statement
_, err = db.Query("UPDATE task SET status = 1 WHERE ID = " + strconv.Itoa(task.ID))
if err != nil { if err != nil {
panic(err.Error()) log.Fatal(err.Error())
}
_, err = statement.Exec(1, "datetime('now')", strconv.Itoa(task.ID)) // Execute SQL Statement
if err != nil {
log.Fatal(err.Error())
} }
if diagnostics.Version == "dev" { if diagnostics.Version == "dev" {
@ -207,16 +205,33 @@ func ExecuteTask(task Task) Task {
} }
statement, err = db.Prepare("Update task SET status = 2, result = '" + task.Result.String + "', updated = datetime('now') WHERE ID = " + strconv.Itoa(task.ID) + ";") // Prepare SQL Statement
if err != nil {
log.Fatal(err.Error())
}
if err != nil {
log.Fatal(err.Error())
}
if task.Result.Valid { if task.Result.Valid {
db.Query("Update task SET status = 2, result = '" + task.Result.String + "' WHERE ID = " + strconv.Itoa(task.ID) + ";") _, err = statement.Exec(2, task.Result.String, "datetime('now')", strconv.Itoa(task.ID)) // Execute SQL Statement with result info
if err != nil {
log.Fatal(err.Error())
}
} else { } else {
db.Query("Update task SET status = 3, result = 'Error' WHERE ID = " + strconv.Itoa(task.ID) + ";") _, err = statement.Exec(3, "Error", "datetime('now')", strconv.Itoa(task.ID)) // Execute SQL Statement with Error info
if err != nil {
log.Fatal(err.Error())
}
} }
if err != nil { if err != nil {
panic(err.Error()) panic(err.Error())
} }
db.Close()
returnTask := task returnTask := task
return returnTask return returnTask
@ -360,17 +375,21 @@ func taskGetEdgeApps() string {
db, err := sql.Open("sqlite3", utils.GetSQLiteDbConnectionDetails()) db, err := sql.Open("sqlite3", utils.GetSQLiteDbConnectionDetails())
if err != nil { if err != nil {
panic(err.Error()) log.Fatal(err.Error())
} }
defer db.Close() statement, err := db.Prepare("REPLACE into option (name, value, created, updated) VALUES (?, ?, ?, ?);") // Prepare SQL Statement
_, err = db.Query("REPLACE into option (name, value) VALUES ('EDGEAPPS_LIST','" + string(edgeAppsJSON) + "');")
if err != nil { if err != nil {
panic(err.Error()) log.Fatal(err.Error())
} }
_, err = statement.Exec("EDGEAPPS_LIST", string(edgeAppsJSON), "datetime('now')", "datetime('now')") // Execute SQL Statement
if err != nil {
log.Fatal(err.Error())
}
db.Close()
return string(edgeAppsJSON) return string(edgeAppsJSON)
} }