open-nomad/client/state/errdb.go
Alexander Shtuchkin 90fd8bb85f
Implement 'batch mode' for persisting allocations on the client. (#9093)
Fixes #9047, see problem details there.

As a solution, we use BoltDB's 'Batch' mode that combines multiple
parallel writes into small number of transactions. See
https://github.com/boltdb/bolt#batch-read-write-transactions for
more information.
2020-10-20 16:15:37 -04:00

103 lines
2.9 KiB
Go

package state
import (
"fmt"
"github.com/hashicorp/nomad/client/allocrunner/taskrunner/state"
dmstate "github.com/hashicorp/nomad/client/devicemanager/state"
"github.com/hashicorp/nomad/client/dynamicplugins"
driverstate "github.com/hashicorp/nomad/client/pluginmanager/drivermanager/state"
"github.com/hashicorp/nomad/nomad/structs"
)
// ErrDB implements a StateDB that returns errors on restore methods, used for testing
type ErrDB struct {
// Allocs is a preset slice of allocations used in GetAllAllocations
Allocs []*structs.Allocation
}
func (m *ErrDB) Name() string {
return "errdb"
}
func (m *ErrDB) Upgrade() error {
return nil
}
func (m *ErrDB) GetAllAllocations() ([]*structs.Allocation, map[string]error, error) {
return m.Allocs, nil, nil
}
func (m *ErrDB) PutAllocation(alloc *structs.Allocation, opts ...WriteOption) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) GetDeploymentStatus(allocID string) (*structs.AllocDeploymentStatus, error) {
return nil, fmt.Errorf("Error!")
}
func (m *ErrDB) PutDeploymentStatus(allocID string, ds *structs.AllocDeploymentStatus) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) GetNetworkStatus(allocID string) (*structs.AllocNetworkStatus, error) {
return nil, fmt.Errorf("Error!")
}
func (m *ErrDB) PutNetworkStatus(allocID string, ns *structs.AllocNetworkStatus, opts ...WriteOption) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) GetTaskRunnerState(allocID string, taskName string) (*state.LocalState, *structs.TaskState, error) {
return nil, nil, fmt.Errorf("Error!")
}
func (m *ErrDB) PutTaskRunnerLocalState(allocID string, taskName string, val *state.LocalState) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) PutTaskState(allocID string, taskName string, state *structs.TaskState) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) DeleteTaskBucket(allocID, taskName string) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) DeleteAllocationBucket(allocID string, opts ...WriteOption) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) PutDevicePluginState(ps *dmstate.PluginState) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) GetDynamicPluginRegistryState() (*dynamicplugins.RegistryState, error) {
return nil, fmt.Errorf("Error!")
}
func (m *ErrDB) PutDynamicPluginRegistryState(state *dynamicplugins.RegistryState) error {
return fmt.Errorf("Error!")
}
// GetDevicePluginState stores the device manager's plugin state or returns an
// error.
func (m *ErrDB) GetDevicePluginState() (*dmstate.PluginState, error) {
return nil, fmt.Errorf("Error!")
}
func (m *ErrDB) GetDriverPluginState() (*driverstate.PluginState, error) {
return nil, fmt.Errorf("Error!")
}
func (m *ErrDB) PutDriverPluginState(ps *driverstate.PluginState) error {
return fmt.Errorf("Error!")
}
func (m *ErrDB) Close() error {
return fmt.Errorf("Error!")
}
// Ensure *ErrDB implements StateDB
var _ StateDB = (*ErrDB)(nil)