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instances.go
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instances.go
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//go:build linux && cgo && !agent
package db
import (
"context"
"database/sql"
"fmt"
"net/http"
"sort"
"strings"
"time"
internalInstance "github.com/lxc/incus/v6/internal/instance"
"github.com/lxc/incus/v6/internal/server/db/cluster"
"github.com/lxc/incus/v6/internal/server/db/query"
deviceConfig "github.com/lxc/incus/v6/internal/server/device/config"
"github.com/lxc/incus/v6/internal/server/instance/instancetype"
"github.com/lxc/incus/v6/shared/api"
)
// InstanceArgs is a value object holding all db-related details about an instance.
type InstanceArgs struct {
// Don't set manually
ID int
Node string
Type instancetype.Type
Snapshot bool
// Creation only
Project string
BaseImage string
CreationDate time.Time
Architecture int
Config map[string]string
Description string
Devices deviceConfig.Devices
Ephemeral bool
LastUsedDate time.Time
Name string
Profiles []api.Profile
Stateful bool
ExpiryDate time.Time
}
// GetInstanceNames returns the names of all containers the given project.
func (c *ClusterTx) GetInstanceNames(ctx context.Context, project string) ([]string, error) {
stmt := `
SELECT instances.name FROM instances
JOIN projects ON projects.id = instances.project_id
WHERE projects.name = ?
`
return query.SelectStrings(ctx, c.tx, stmt, project)
}
// GetNodeAddressOfInstance returns the address of the node hosting the
// instance with the given name in the given project.
//
// It returns the empty string if the container is hosted on this node.
func (c *ClusterTx) GetNodeAddressOfInstance(ctx context.Context, project string, name string, instType instancetype.Type) (string, error) {
var stmt string
args := make([]any, 0, 4) // Expect up to 4 filters.
var filters strings.Builder
// Project filter.
filters.WriteString("projects.name = ?")
args = append(args, project)
// Instance type filter.
if instType != instancetype.Any {
filters.WriteString(" AND instances.type = ?")
args = append(args, instType)
}
if strings.Contains(name, internalInstance.SnapshotDelimiter) {
parts := strings.SplitN(name, internalInstance.SnapshotDelimiter, 2)
// Instance name filter.
filters.WriteString(" AND instances.name = ?")
args = append(args, parts[0])
// Snapshot name filter.
filters.WriteString(" AND instances_snapshots.name = ?")
args = append(args, parts[1])
stmt = fmt.Sprintf(`
SELECT nodes.id, nodes.address
FROM nodes
JOIN instances ON instances.node_id = nodes.id
JOIN projects ON projects.id = instances.project_id
JOIN instances_snapshots ON instances_snapshots.instance_id = instances.id
WHERE %s
`, filters.String())
} else {
// Instance name filter.
filters.WriteString(" AND instances.name = ?")
args = append(args, name)
stmt = fmt.Sprintf(`
SELECT nodes.id, nodes.address
FROM nodes
JOIN instances ON instances.node_id = nodes.id
JOIN projects ON projects.id = instances.project_id
WHERE %s
`, filters.String())
}
var address string
var id int64
rows, err := c.tx.QueryContext(ctx, stmt, args...)
if err != nil {
return "", err
}
defer func() { _ = rows.Close() }()
if !rows.Next() {
return "", api.StatusErrorf(http.StatusNotFound, "Instance not found")
}
err = rows.Scan(&id, &address)
if err != nil {
return "", err
}
if rows.Next() {
return "", fmt.Errorf("More than one cluster member associated with instance")
}
err = rows.Err()
if err != nil {
return "", err
}
if id == c.nodeID {
return "", nil
}
return address, nil
}
// Instance represents basic instance info.
type Instance struct {
ID int64
Name string
Project string
Location string
Type instancetype.Type
}
// GetInstancesByMemberAddress returns the instances associated to each cluster member address.
// The member address of instances running on the local member is set to the empty string, to distinguish it from
// remote nodes. Instances whose member is down are added to the special address "0.0.0.0".
func (c *ClusterTx) GetInstancesByMemberAddress(ctx context.Context, offlineThreshold time.Duration, projects []string, instType instancetype.Type) (map[string][]Instance, error) {
args := make([]any, 0, 2) // Expect up to 2 filters.
var q strings.Builder
q.WriteString(`SELECT
instances.id, instances.name, instances.type,
nodes.id, nodes.name, nodes.address, nodes.heartbeat,
projects.name
FROM instances
JOIN nodes ON nodes.id = instances.node_id
JOIN projects ON projects.id = instances.project_id
`)
// Project filter.
q.WriteString(fmt.Sprintf("WHERE projects.name IN %s", query.Params(len(projects))))
for _, project := range projects {
args = append(args, project)
}
// Instance type filter.
if instType != instancetype.Any {
q.WriteString(" AND instances.type = ?")
args = append(args, instType)
}
q.WriteString(" ORDER BY instances.id")
rows, err := c.tx.QueryContext(ctx, q.String(), args...)
if err != nil {
return nil, err
}
defer func() { _ = rows.Close() }()
memberAddressInstances := make(map[string][]Instance)
for rows.Next() {
var inst Instance
var memberAddress string
var memberID int64
var memberHeartbeat time.Time
err := rows.Scan(&inst.ID, &inst.Name, &inst.Type, &memberID, &inst.Location, &memberAddress, &memberHeartbeat, &inst.Project)
if err != nil {
return nil, err
}
if memberID == c.nodeID {
memberAddress = ""
} else if nodeIsOffline(offlineThreshold, memberHeartbeat) {
memberAddress = "0.0.0.0"
}
memberAddressInstances[memberAddress] = append(memberAddressInstances[memberAddress], inst)
}
err = rows.Err()
if err != nil {
return nil, err
}
return memberAddressInstances, nil
}
// ErrInstanceListStop used as return value from InstanceList's instanceFunc when prematurely stopping the search.
var ErrInstanceListStop = fmt.Errorf("search stopped")
// InstanceList loads all instances across all projects and for each instance runs the instanceFunc passing in the
// instance and it's project and profiles. Accepts optional filter arguments to specify a subset of instances.
func (c *ClusterTx) InstanceList(ctx context.Context, instanceFunc func(inst InstanceArgs, project api.Project) error, filters ...cluster.InstanceFilter) error {
projectsByName := make(map[string]*api.Project)
var instances map[int]InstanceArgs
emptyFilter := cluster.InstanceFilter{}
validFilters := []cluster.InstanceFilter{}
for _, filter := range filters {
if filter.Type != nil && *filter.Type == instancetype.Any {
filter.Type = nil
}
if filter != emptyFilter {
validFilters = append(validFilters, filter)
}
}
// Retrieve required info from the database in single transaction for performance.
// Get all projects.
projects, err := cluster.GetProjects(ctx, c.tx)
if err != nil {
return fmt.Errorf("Failed loading projects: %w", err)
}
// Get all instances using supplied filter.
dbInstances, err := cluster.GetInstances(ctx, c.tx, validFilters...)
if err != nil {
return fmt.Errorf("Failed loading instances: %w", err)
}
// Fill instances with config, devices and profiles.
instances, err = c.InstancesToInstanceArgs(ctx, true, dbInstances...)
if err != nil {
return err
}
// Record which projects are referenced by at least one instance in the list.
for _, instance := range instances {
_, ok := projectsByName[instance.Project]
if !ok {
projectsByName[instance.Project] = nil
}
}
// Populate projectsByName map entry for referenced projects.
// This way we only call ToAPI() on the projects actually referenced by the instances in
// the list, which can reduce the number of queries run.
for _, project := range projects {
_, ok := projectsByName[project.Name]
if !ok {
continue
}
projectsByName[project.Name], err = project.ToAPI(ctx, c.tx)
if err != nil {
return err
}
}
// Call the instanceFunc provided for each instance after the transaction has ended, as we don't know if
// the instanceFunc will be slow or may need to make additional DB queries.
for _, instance := range instances {
project := projectsByName[instance.Project]
if project == nil {
return fmt.Errorf("Instance references %d project %q that isn't loaded", instance.ID, instance.Project)
}
err = instanceFunc(instance, *project)
if err != nil {
return err
}
}
return nil
}
// instanceConfigFill function loads config for all specified instances in a single query and then updates
// the entries in the instances map.
func (c *ClusterTx) instanceConfigFill(ctx context.Context, snapshotsMode bool, instanceArgs *map[int]InstanceArgs) error {
instances := *instanceArgs
// Don't use query parameters for the IN statement to workaround an issue in Dqlite (apparently)
// that means that >255 query parameters causes partial result sets. See #10705
// This is safe as the inputs are ints.
var q strings.Builder
if snapshotsMode {
q.WriteString(`SELECT
instance_snapshot_id,
key,
value
FROM instances_snapshots_config
WHERE instance_snapshot_id IN (`)
} else {
q.WriteString(`SELECT
instance_id,
key,
value
FROM instances_config
WHERE instance_id IN (`)
}
q.Grow(len(instances) * 2) // We know the minimum length of the separators and integers.
first := true
for instanceID := range instances {
if !first {
q.WriteString(",")
}
first = false
q.WriteString(fmt.Sprintf("%d", instanceID))
}
q.WriteString(`)`)
return query.Scan(ctx, c.Tx(), q.String(), func(scan func(dest ...any) error) error {
var instanceID int
var key, value string
err := scan(&instanceID, &key, &value)
if err != nil {
return err
}
_, found := instances[instanceID]
if !found {
return fmt.Errorf("Failed loading instance config, referenced instance %d not loaded", instanceID)
}
if instances[instanceID].Config == nil {
inst := instances[instanceID]
inst.Config = make(map[string]string)
instances[instanceID] = inst
}
_, found = instances[instanceID].Config[key]
if found {
return fmt.Errorf("Duplicate config row found for key %q for instance ID %d", key, instanceID)
}
instances[instanceID].Config[key] = value
return nil
})
}
// instanceDevicesFill loads the device config for all instances specified in a single query and then updates
// the entries in the instances map.
func (c *ClusterTx) instanceDevicesFill(ctx context.Context, snapshotsMode bool, instanceArgs *map[int]InstanceArgs) error {
instances := *instanceArgs
// Don't use query parameters for the IN statement to workaround an issue in Dqlite (apparently)
// that means that >255 query parameters causes partial result sets. See #10705
// This is safe as the inputs are ints.
var q strings.Builder
if snapshotsMode {
q.WriteString(`
SELECT
instances_snapshots_devices.instance_snapshot_id AS instance_snapshot_id,
instances_snapshots_devices.name AS device_name,
instances_snapshots_devices.type AS device_type,
instances_snapshots_devices_config.key,
instances_snapshots_devices_config.value
FROM instances_snapshots_devices_config
JOIN instances_snapshots_devices ON instances_snapshots_devices.id = instances_snapshots_devices_config.instance_snapshot_device_id
WHERE instances_snapshots_devices.instance_snapshot_id IN (`)
} else {
q.WriteString(`
SELECT
instances_devices.instance_id AS instance_id,
instances_devices.name AS device_name,
instances_devices.type AS device_type,
instances_devices_config.key,
instances_devices_config.value
FROM instances_devices_config
JOIN instances_devices ON instances_devices.id = instances_devices_config.instance_device_id
WHERE instances_devices.instance_id IN (`)
}
q.Grow(len(instances) * 2) // We know the minimum length of the separators and integers.
first := true
for instanceID := range instances {
if !first {
q.WriteString(",")
}
first = false
q.WriteString(fmt.Sprintf("%d", instanceID))
}
q.WriteString(`)`)
return query.Scan(ctx, c.Tx(), q.String(), func(scan func(dest ...any) error) error {
var instanceID int
var deviceType cluster.DeviceType
var deviceName, key, value string
err := scan(&instanceID, &deviceName, &deviceType, &key, &value)
if err != nil {
return err
}
_, found := instances[instanceID]
if !found {
return fmt.Errorf("Failed loading instance device, referenced instance %d not loaded", instanceID)
}
if instances[instanceID].Devices == nil {
inst := instances[instanceID]
inst.Devices = make(deviceConfig.Devices)
instances[instanceID] = inst
}
_, found = instances[instanceID].Devices[deviceName]
if !found {
instances[instanceID].Devices[deviceName] = deviceConfig.Device{
"type": deviceType.String(), // Map instances_devices type to config field.
}
}
_, found = instances[instanceID].Devices[deviceName][key]
if found && key != "type" {
// For legacy reasons the type value is in both the instances_devices and
// instances_devices_config tables. We use the one from the instances_devices.
return fmt.Errorf("Duplicate device row found for device %q key %q for instance ID %d", deviceName, key, instanceID)
}
instances[instanceID].Devices[deviceName][key] = value
return nil
})
}
// instanceProfiles loads the profile IDs to apply to an instance (in the application order) for all
// instanceIDs in a single query and then updates the instanceApplyProfileIDs and profilesByID maps.
func (c *ClusterTx) instanceProfilesFill(ctx context.Context, snapshotsMode bool, instanceArgs *map[int]InstanceArgs) error {
instances := *instanceArgs
// Get profiles referenced by instances.
// Don't use query parameters for the IN statement to workaround an issue in Dqlite (apparently)
// that means that >255 query parameters causes partial result sets. See #10705
// This is safe as the inputs are ints.
var q strings.Builder
if snapshotsMode {
q.WriteString(`
SELECT
instances_snapshots.id AS snapshot_id,
instances_profiles.profile_id AS profile_id
FROM instances_profiles
JOIN instances_snapshots ON instances_snapshots.instance_id = instances_profiles.instance_id
WHERE instances_snapshots.id IN (`)
} else {
q.WriteString(`
SELECT
instances_profiles.instance_id AS instance_id,
instances_profiles.profile_id AS profile_id
FROM instances_profiles
WHERE instances_profiles.instance_id IN (`)
}
q.Grow(len(instances) * 2) // We know the minimum length of the separators and integers.
first := true
for instanceID := range instances {
if !first {
q.WriteString(",")
}
first = false
q.WriteString(fmt.Sprintf("%d", instanceID))
}
q.WriteString(`)
ORDER BY instances_profiles.instance_id, instances_profiles.apply_order`)
profilesByID := make(map[int]*api.Profile)
instanceApplyProfileIDs := make(map[int64][]int, len(instances))
err := query.Scan(ctx, c.Tx(), q.String(), func(scan func(dest ...any) error) error {
var instanceID int64
var profileID int
err := scan(&instanceID, &profileID)
if err != nil {
return err
}
instanceApplyProfileIDs[instanceID] = append(instanceApplyProfileIDs[instanceID], profileID)
// Record that this profile is referenced by at least one instance in the list.
_, ok := profilesByID[profileID]
if !ok {
profilesByID[profileID] = nil
}
return nil
})
if err != nil {
return err
}
// Get all profiles.
profiles, err := cluster.GetProfiles(context.TODO(), c.Tx())
if err != nil {
return fmt.Errorf("Failed loading profiles: %w", err)
}
// Populate profilesByID map entry for referenced profiles.
// This way we only call ToAPI() on the profiles actually referenced by the instances in
// the list, which can reduce the number of queries run.
for _, profile := range profiles {
_, ok := profilesByID[profile.ID]
if !ok {
continue
}
profilesByID[profile.ID], err = profile.ToAPI(context.TODO(), c.tx)
if err != nil {
return err
}
}
// Populate instance profiles list in apply order.
for instanceID := range instances {
inst := instances[instanceID]
inst.Profiles = make([]api.Profile, 0, len(inst.Profiles))
for _, applyProfileID := range instanceApplyProfileIDs[int64(inst.ID)] {
profile := profilesByID[applyProfileID]
if profile == nil {
return fmt.Errorf("Instance %d references profile %d that isn't loaded", inst.ID, applyProfileID)
}
inst.Profiles = append(inst.Profiles, *profile)
}
instances[instanceID] = inst
}
return nil
}
// InstancesToInstanceArgs converts many cluster.Instance to a map of InstanceArgs in as few queries as possible.
// Accepts fillProfiles argument that controls whether or not the returned InstanceArgs have their Profiles field
// populated. This avoids the need to load profile info from the database if it is already available in the
// caller's context and can be populated afterwards.
func (c *ClusterTx) InstancesToInstanceArgs(ctx context.Context, fillProfiles bool, instances ...cluster.Instance) (map[int]InstanceArgs, error) {
var instanceCount, snapshotCount uint
// Convert instances to partial InstanceArgs slice (Config, Devices and Profiles not populated yet).
instanceArgs := make(map[int]InstanceArgs, len(instances))
for _, instance := range instances {
if instance.Snapshot {
snapshotCount++
} else {
instanceCount++
}
args := InstanceArgs{
ID: instance.ID,
Project: instance.Project,
Name: instance.Name,
Node: instance.Node,
Type: instance.Type,
Snapshot: instance.Snapshot,
Architecture: instance.Architecture,
Ephemeral: instance.Ephemeral,
CreationDate: instance.CreationDate,
Stateful: instance.Stateful,
LastUsedDate: instance.LastUseDate.Time,
Description: instance.Description,
ExpiryDate: instance.ExpiryDate.Time,
}
instanceArgs[instance.ID] = args
}
if instanceCount > 0 && snapshotCount > 0 {
return nil, fmt.Errorf("Cannot use InstancesToInstanceArgs with mixed instance and instance snapshots")
}
// Populate instance config.
err := c.instanceConfigFill(ctx, snapshotCount > 0, &instanceArgs)
if err != nil {
return nil, fmt.Errorf("Failed loading instance config: %w", err)
}
// Populate instance devices.
err = c.instanceDevicesFill(ctx, snapshotCount > 0, &instanceArgs)
if err != nil {
return nil, fmt.Errorf("Failed loading instance devices: %w", err)
}
// Populate instance profiles if requested.
if fillProfiles {
err = c.instanceProfilesFill(ctx, snapshotCount > 0, &instanceArgs)
if err != nil {
return nil, fmt.Errorf("Failed loading instance profiles: %w", err)
}
}
return instanceArgs, nil
}
// UpdateInstanceNode changes the name of an instance and the cluster member hosting it.
// It's meant to be used when moving a non-running instance backed by remote storage from one cluster node to another.
func (c *ClusterTx) UpdateInstanceNode(ctx context.Context, project string, oldName string, newName string, newMemberName string, poolID int64, volumeType int) error {
// Update the name of the instance and its snapshots, and the member ID they are associated with.
instanceID, err := cluster.GetInstanceID(ctx, c.tx, project, oldName)
if err != nil {
return fmt.Errorf("Failed to get instance's ID: %w", err)
}
member, err := c.GetNodeByName(ctx, newMemberName)
if err != nil {
return fmt.Errorf("Failed to get new member %q info: %w", newMemberName, err)
}
stmt := "UPDATE instances SET node_id=?, name=? WHERE id=?"
result, err := c.tx.Exec(stmt, member.ID, newName, instanceID)
if err != nil {
return fmt.Errorf("Failed to update instance's name and member ID: %w", err)
}
n, err := result.RowsAffected()
if err != nil {
return fmt.Errorf("Failed to get rows affected by instance update: %w", err)
}
if n != 1 {
return fmt.Errorf("Unexpected number of updated rows in instances table: %d", n)
}
// No need to update storage_volumes if the name is identical
if newName == oldName {
return nil
}
stmt = "UPDATE storage_volumes SET name=? WHERE name=? AND storage_pool_id=? AND type=?"
result, err = c.tx.Exec(stmt, newName, oldName, poolID, volumeType)
if err != nil {
return fmt.Errorf("Failed to update instance's volume name: %w", err)
}
n, err = result.RowsAffected()
if err != nil {
return fmt.Errorf("Failed to get rows affected by instance volume update: %w", err)
}
if n != 1 {
return fmt.Errorf("Unexpected number of updated rows in volumes table: %d", n)
}
return nil
}
// GetLocalInstancesInProject retuurns all instances of the given type on the local member in the given project.
// If projectName is empty then all instances in all projects are returned.
func (c *ClusterTx) GetLocalInstancesInProject(ctx context.Context, filter cluster.InstanceFilter) ([]cluster.Instance, error) {
node, err := c.GetLocalNodeName(ctx)
if err != nil {
return nil, fmt.Errorf("Local node name: %w", err)
}
if node != "" {
filter.Node = &node
}
return cluster.GetInstances(ctx, c.tx, filter)
}
// CreateInstanceConfig inserts a new config for the container with the given ID.
func (c *ClusterTx) CreateInstanceConfig(ctx context.Context, id int, config map[string]string) error {
return CreateInstanceConfig(ctx, c.tx, id, config)
}
// UpdateInstanceConfig inserts/updates/deletes the provided keys.
func (c *ClusterTx) UpdateInstanceConfig(id int, values map[string]string) error {
insertSQL := "INSERT OR REPLACE INTO instances_config (instance_id, key, value) VALUES"
deleteSQL := "DELETE FROM instances_config WHERE key IN %s AND instance_id=?"
return c.configUpdate(id, values, insertSQL, deleteSQL)
}
func (c *ClusterTx) configUpdate(id int, values map[string]string, insertSQL, deleteSQL string) error {
changes := map[string]string{}
deletes := []string{}
// Figure out which key to set/unset
for key, value := range values {
if value == "" {
deletes = append(deletes, key)
continue
}
changes[key] = value
}
// Insert/update keys
if len(changes) > 0 {
query := insertSQL
exprs := []string{}
params := []any{}
for key, value := range changes {
exprs = append(exprs, "(?, ?, ?)")
params = append(params, []any{id, key, value}...)
}
query += strings.Join(exprs, ",")
_, err := c.tx.Exec(query, params...)
if err != nil {
return err
}
}
// Delete keys
if len(deletes) > 0 {
query := fmt.Sprintf(deleteSQL, query.Params(len(deletes)))
params := []any{}
for _, key := range deletes {
params = append(params, key)
}
params = append(params, id)
_, err := c.tx.Exec(query, params...)
if err != nil {
return err
}
}
return nil
}
// DeleteInstanceConfigKey removes the given key from the config of the instance
// with the given ID.
func (c *ClusterTx) DeleteInstanceConfigKey(ctx context.Context, id int64, key string) error {
q := "DELETE FROM instances_config WHERE key=? AND instance_id=?"
_, err := c.tx.ExecContext(ctx, q, key, id)
return err
}
// UpdateInstancePowerState sets the power state of the container with the given ID.
func (c *ClusterTx) UpdateInstancePowerState(id int, state string) error {
// Set the new value
str := "INSERT OR REPLACE INTO instances_config (instance_id, key, value) VALUES (?, 'volatile.last_state.power', ?)"
_, err := c.tx.Exec(str, id, state)
if err != nil {
return err
}
return nil
}
// UpdateInstanceLastUsedDate updates the last_use_date field of the instance
// with the given ID.
func (c *ClusterTx) UpdateInstanceLastUsedDate(id int, date time.Time) error {
str := `UPDATE instances SET last_use_date=? WHERE id=?`
_, err := c.tx.Exec(str, date, id)
if err != nil {
return err
}
return nil
}
// GetInstanceSnapshotsWithName returns all snapshots of a given instance in date created order, oldest first.
func (c *ClusterTx) GetInstanceSnapshotsWithName(ctx context.Context, project string, name string) ([]cluster.Instance, error) {
instance, err := cluster.GetInstance(ctx, c.tx, project, name)
if err != nil {
return nil, err
}
filter := cluster.InstanceSnapshotFilter{
Project: &project,
Instance: &name,
}
snapshots, err := cluster.GetInstanceSnapshots(ctx, c.tx, filter)
if err != nil {
return nil, err
}
sort.SliceStable(snapshots, func(i, j int) bool {
return snapshots[i].CreationDate.Before(snapshots[j].CreationDate)
})
instances := make([]cluster.Instance, len(snapshots))
for i, snapshot := range snapshots {
instances[i] = snapshot.ToInstance(instance.Name, instance.Node, instance.Type, instance.Architecture)
}
return instances, nil
}
// GetLocalInstanceWithVsockID returns all available instances with the given config key and value.
func (c *ClusterTx) GetLocalInstanceWithVsockID(ctx context.Context, vsockID int) (*cluster.Instance, error) {
q := `
SELECT instances.id, projects.name AS project, instances.name, nodes.name AS node, instances.type, instances.architecture, instances.ephemeral, instances.creation_date, instances.stateful, instances.last_use_date, coalesce(instances.description, ''), instances.expiry_date
FROM instances JOIN projects ON instances.project_id = projects.id JOIN nodes ON instances.node_id = nodes.id JOIN instances_config ON instances.id = instances_config.instance_id
WHERE instances.node_id = ? AND instances.type = ? AND instances_config.key = "volatile.vsock_id" AND instances_config.value = ? LIMIT 1
`
inargs := []any{c.nodeID, instancetype.VM, vsockID}
inst := cluster.Instance{}
err := c.tx.QueryRowContext(ctx, q, inargs...).Scan(&inst.ID, &inst.Project, &inst.Name, &inst.Node, &inst.Type, &inst.Architecture, &inst.Ephemeral, &inst.CreationDate, &inst.Stateful, &inst.LastUseDate, &inst.Description, &inst.ExpiryDate)
if err != nil {
if err == sql.ErrNoRows {
return nil, api.StatusErrorf(http.StatusNotFound, "Instance not found")
}
return nil, err
}
return &inst, nil
}
// GetInstancePool returns the storage pool of a given instance (or snapshot).
func (c *ClusterTx) GetInstancePool(ctx context.Context, projectName string, instanceName string) (string, error) {
// Strip snapshot name if supplied in instanceName, and lookup the storage pool of the parent instance
// as that must always be the same as the snapshot's storage pool.
instanceName, _, _ = api.GetParentAndSnapshotName(instanceName)
remoteDrivers := StorageRemoteDriverNames()
// Get container storage volume. Since container names are globally
// unique, and their storage volumes carry the same name, their storage
// volumes are unique too.
poolName := ""
query := fmt.Sprintf(`
SELECT storage_pools.name FROM storage_pools
JOIN storage_volumes_all ON storage_pools.id=storage_volumes_all.storage_pool_id
JOIN instances ON instances.name=storage_volumes_all.name
JOIN projects ON projects.id=instances.project_id
WHERE projects.name=?
AND storage_volumes_all.name=?
AND storage_volumes_all.type IN (?,?)
AND storage_volumes_all.project_id = instances.project_id
AND (storage_volumes_all.node_id=? OR storage_volumes_all.node_id IS NULL AND storage_pools.driver IN %s)`, query.Params(len(remoteDrivers)))
inargs := []any{projectName, instanceName, StoragePoolVolumeTypeContainer, StoragePoolVolumeTypeVM, c.nodeID}
outargs := []any{&poolName}
for _, driver := range remoteDrivers {
inargs = append(inargs, driver)
}
err := c.tx.QueryRowContext(ctx, query, inargs...).Scan(outargs...)
if err != nil {
if err == sql.ErrNoRows {
return "", api.StatusErrorf(http.StatusNotFound, "Instance storage pool not found")
}
return "", err
}
return poolName, nil
}
// DeleteInstance removes the instance with the given name from the database.
func (c *ClusterTx) DeleteInstance(ctx context.Context, project, name string) error {
if strings.Contains(name, internalInstance.SnapshotDelimiter) {
parts := strings.SplitN(name, internalInstance.SnapshotDelimiter, 2)
return cluster.DeleteInstanceSnapshot(ctx, c.tx, project, parts[0], parts[1])
}
return cluster.DeleteInstance(ctx, c.tx, project, name)
}
// GetInstanceProjectAndName returns the project and the name of the instance
// with the given ID.
func (c *ClusterTx) GetInstanceProjectAndName(ctx context.Context, id int) (string, string, error) {
var project string
var name string
q := `
SELECT projects.name, instances.name
FROM instances
JOIN projects ON projects.id = instances.project_id
WHERE instances.id=?
`
err := c.tx.QueryRowContext(ctx, q, id).Scan(&project, &name)
if err == sql.ErrNoRows {
return "", "", api.StatusErrorf(http.StatusNotFound, "Instance not found")
}
return project, name, err
}
// GetInstanceID returns the ID of the instance with the given name.
func (c *ClusterTx) GetInstanceID(ctx context.Context, project, name string) (int, error) {
id, err := cluster.GetInstanceID(ctx, c.tx, project, name)
return int(id), err
}
// GetInstanceConfig returns the value of the given key in the configuration
// of the instance with the given ID.
func (c *ClusterTx) GetInstanceConfig(ctx context.Context, id int, key string) (string, error) {
q := "SELECT value FROM instances_config WHERE instance_id=? AND key=?"
value := ""
err := c.tx.QueryRowContext(ctx, q, id, key).Scan(&value)
if err == sql.ErrNoRows {
return "", api.StatusErrorf(http.StatusNotFound, "Instance config not found")
}
return value, err
}
// UpdateInstanceStatefulFlag toggles the stateful flag of the instance with
// the given ID.
func (c *ClusterTx) UpdateInstanceStatefulFlag(ctx context.Context, id int, stateful bool) error {
statefulInt := 0
if stateful {
statefulInt = 1
}
_, err := c.tx.ExecContext(ctx, "UPDATE instances SET stateful=? WHERE id=?", statefulInt, id)
if err != nil {
return fmt.Errorf("Failed updating instance stateful flag: %w", err)
}
return nil
}
// UpdateInstanceSnapshotCreationDate updates the creation_date field of the instance snapshot with ID.
func (c *ClusterTx) UpdateInstanceSnapshotCreationDate(ctx context.Context, instanceID int, date time.Time) error {
stmt := `UPDATE instances_snapshots SET creation_date=? WHERE id=?`
_, err := c.tx.ExecContext(ctx, stmt, date, instanceID)
if err != nil {
return fmt.Errorf("Failed updating instance snapshot creation date: %w", err)
}
return nil
}
// GetInstanceSnapshotsNames returns the names of all snapshots of the instance
// in the given project with the given name.
// Returns snapshots slice ordered by when they were created, oldest first.
func (c *ClusterTx) GetInstanceSnapshotsNames(ctx context.Context, project, name string) ([]string, error) {
result := []string{}
q := `
SELECT instances_snapshots.name
FROM instances_snapshots
JOIN instances ON instances.id = instances_snapshots.instance_id
JOIN projects ON projects.id = instances.project_id
WHERE projects.name=? AND instances.name=?
ORDER BY instances_snapshots.creation_date, instances_snapshots.id
`
inargs := []any{project, name}
outfmt := []any{name}
dbResults, err := queryScan(ctx, c, q, inargs, outfmt)
if err != nil {
return result, err
}
for _, r := range dbResults {
result = append(result, name+internalInstance.SnapshotDelimiter+r[0].(string))
}
return result, nil
}
// GetNextInstanceSnapshotIndex returns the index that the next snapshot of the
// instance with the given name and pattern should have.
func (c *ClusterTx) GetNextInstanceSnapshotIndex(ctx context.Context, project string, name string, pattern string) int {
q := `
SELECT instances_snapshots.name
FROM instances_snapshots
JOIN instances ON instances.id = instances_snapshots.instance_id