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devices.mapper.go
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devices.mapper.go
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//go:build linux && cgo && !agent
package cluster
// The code below was generated by lxd-generate - DO NOT EDIT!
import (
"context"
"database/sql"
"fmt"
"strings"
"github.com/canonical/lxd/lxd/db/query"
"github.com/canonical/lxd/shared/api"
)
var _ = api.ServerEnvironment{}
const deviceObjects = `SELECT %s_devices.id, %s_devices.%s_id, %s_devices.name, %s_devices.type
FROM %s_devices
ORDER BY %s_devices.name`
const deviceCreate = `INSERT INTO %s_devices (%s_id, name, type)
VALUES (?, ?, ?)`
const deviceDelete = `DELETE FROM %s_devices WHERE %s_id = ?`
// deviceColumns returns a string of column names to be used with a SELECT statement for the entity.
// Use this function when building statements to retrieve database entries matching the Device entity.
func deviceColumns() string {
return "%s_devices.id, %s_devices.%s_id, %s_devices.name, %s_devices.type, %s_devices.config"
}
// getDevices can be used to run handwritten sql.Stmts to return a slice of objects.
func getDevices(ctx context.Context, stmt *sql.Stmt, parent string, args ...any) ([]Device, error) {
objects := make([]Device, 0)
dest := func(scan func(dest ...any) error) error {
d := Device{}
err := scan(&d.ID, &d.ReferenceID, &d.Name, &d.Type)
if err != nil {
return err
}
objects = append(objects, d)
return nil
}
err := query.SelectObjects(ctx, stmt, dest, args...)
if err != nil {
return nil, fmt.Errorf("Failed to fetch from \"%s_devices\" table: %w", parent, err)
}
return objects, nil
}
// getDevicesRaw can be used to run handwritten query strings to return a slice of objects.
func getDevicesRaw(ctx context.Context, tx *sql.Tx, sql string, parent string, args ...any) ([]Device, error) {
objects := make([]Device, 0)
dest := func(scan func(dest ...any) error) error {
d := Device{}
err := scan(&d.ID, &d.ReferenceID, &d.Name, &d.Type)
if err != nil {
return err
}
objects = append(objects, d)
return nil
}
err := query.Scan(ctx, tx, sql, dest, args...)
if err != nil {
return nil, fmt.Errorf("Failed to fetch from \"%s_devices\" table: %w", parent, err)
}
return objects, nil
}
// GetDevices returns all available devices for the parent entity.
// generator: device GetMany
func GetDevices(ctx context.Context, tx *sql.Tx, parent string, filters ...DeviceFilter) (map[int][]Device, error) {
var err error
// Result slice.
objects := make([]Device, 0)
deviceObjectsLocal := strings.Replace(deviceObjects, "%s_id", fmt.Sprintf("%s_id", parent), -1)
fillParent := make([]any, strings.Count(deviceObjectsLocal, "%s"))
for i := range fillParent {
fillParent[i] = strings.Replace(parent, "_", "s_", -1) + "s"
}
queryStr := fmt.Sprintf(deviceObjectsLocal, fillParent...)
queryParts := strings.SplitN(queryStr, "ORDER BY", 2)
args := []any{}
for i, filter := range filters {
var cond string
if i == 0 {
cond = " WHERE ( %s )"
} else {
cond = " OR ( %s )"
}
entries := []string{}
if filter.Name != nil {
entries = append(entries, "name = ?")
args = append(args, filter.Name)
}
if filter.Type != nil {
entries = append(entries, "type = ?")
args = append(args, filter.Type)
}
if len(entries) == 0 {
return nil, fmt.Errorf("Cannot filter on empty DeviceFilter")
}
queryParts[0] += fmt.Sprintf(cond, strings.Join(entries, " AND "))
}
queryStr = strings.Join(queryParts, " ORDER BY")
// Select.
objects, err = getDevicesRaw(ctx, tx, queryStr, parent, args...)
if err != nil {
return nil, fmt.Errorf("Failed to fetch from \"%s_devices\" table: %w", parent, err)
}
configFilters := []ConfigFilter{}
for _, f := range filters {
filter := f.Config
if filter != nil {
if filter.Key == nil && filter.Value == nil {
return nil, fmt.Errorf("Cannot filter on empty ConfigFilter")
}
configFilters = append(configFilters, *filter)
}
}
config, err := GetConfig(ctx, tx, parent+"_device", configFilters...)
if err != nil {
return nil, err
}
for i := range objects {
_, ok := config[objects[i].ID]
if !ok {
objects[i].Config = map[string]string{}
} else {
objects[i].Config = config[objects[i].ID]
}
}
resultMap := map[int][]Device{}
for _, object := range objects {
_, ok := resultMap[object.ReferenceID]
if !ok {
resultMap[object.ReferenceID] = []Device{}
}
resultMap[object.ReferenceID] = append(resultMap[object.ReferenceID], object)
}
return resultMap, nil
}
// CreateDevices adds a new device to the database.
// generator: device Create
func CreateDevices(ctx context.Context, tx *sql.Tx, parent string, objects map[string]Device) error {
deviceCreateLocal := strings.Replace(deviceCreate, "%s_id", fmt.Sprintf("%s_id", parent), -1)
fillParent := make([]any, strings.Count(deviceCreateLocal, "%s"))
for i := range fillParent {
fillParent[i] = strings.Replace(parent, "_", "s_", -1) + "s"
}
queryStr := fmt.Sprintf(deviceCreateLocal, fillParent...)
for _, object := range objects {
result, err := tx.ExecContext(ctx, queryStr, object.ReferenceID, object.Name, object.Type)
if err != nil {
return fmt.Errorf("Insert failed for \"%s_devices\" table: %w", parent, err)
}
id, err := result.LastInsertId()
if err != nil {
return fmt.Errorf("Failed to fetch ID: %w", err)
}
referenceID := int(id)
for key, value := range object.Config {
insert := Config{
ReferenceID: referenceID,
Key: key,
Value: value,
}
err = CreateConfig(ctx, tx, parent+"_device", insert)
if err != nil {
return fmt.Errorf("Insert Config failed for Device: %w", err)
}
}
}
return nil
}
// UpdateDevices updates the device matching the given key parameters.
// generator: device Update
func UpdateDevices(ctx context.Context, tx *sql.Tx, parent string, referenceID int, devices map[string]Device) error {
// Delete current entry.
err := DeleteDevices(ctx, tx, parent, referenceID)
if err != nil {
return err
}
// Insert new entries.
for key, object := range devices {
object.ReferenceID = referenceID
devices[key] = object
}
err = CreateDevices(ctx, tx, parent, devices)
if err != nil {
return err
}
return nil
}
// DeleteDevices deletes the device matching the given key parameters.
// generator: device DeleteMany
func DeleteDevices(ctx context.Context, tx *sql.Tx, parent string, referenceID int) error {
deviceDeleteLocal := strings.Replace(deviceDelete, "%s_id", fmt.Sprintf("%s_id", parent), -1)
fillParent := make([]any, strings.Count(deviceDeleteLocal, "%s"))
for i := range fillParent {
fillParent[i] = strings.Replace(parent, "_", "s_", -1) + "s"
}
queryStr := fmt.Sprintf(deviceDeleteLocal, fillParent...)
result, err := tx.ExecContext(ctx, queryStr, referenceID)
if err != nil {
return fmt.Errorf("Delete entry for \"%s_device\" failed: %w", parent, err)
}
_, err = result.RowsAffected()
if err != nil {
return fmt.Errorf("Fetch affected rows: %w", err)
}
return nil
}