state

package
v1.0.3 Latest Latest
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 Go to latest Published: Jan 28, 2021 License: MPL-2.0 Imports: 20 Imported by: 219

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NeedsUpgrade 

func NeedsUpgrade(bdb *bolt.DB) (bool, error)

NeedsUpgrade returns true if the BoltDB needs upgrading or false if it is already up to date.

func UpgradeAllocs 

func UpgradeAllocs(logger hclog.Logger, tx *boltdd.Tx) error

UpgradeSchema upgrades the boltdb schema. Example 0.8 schema:

  • allocations
  • 15d83e8a-74a2-b4da-3f17-ed5c12895ea8
  • echo
  • simple-all (342 bytes)
  • alloc (2827 bytes)
  • alloc-dir (166 bytes)
  • immutable (15 bytes)
  • mutable (1294 bytes)

Types

type BoltStateDB 

type BoltStateDB struct {
	// contains filtered or unexported fields
}

BoltStateDB persists and restores Nomad client state in a boltdb. All methods are safe for concurrent access.

func (*BoltStateDB) Close 

func (s *BoltStateDB) Close() error

Close releases all database resources and unlocks the database file on disk. All transactions must be closed before closing the database.

func (*BoltStateDB) DB 

func (s *BoltStateDB) DB() *boltdd.DB

DB allows access to the underlying BoltDB for testing purposes.

func (*BoltStateDB) DeleteAllocationBucket 

func (s *BoltStateDB) DeleteAllocationBucket(allocID string, opts ...WriteOption) error

DeleteAllocationBucket is used to delete an allocation bucket if it exists.

func (*BoltStateDB) DeleteTaskBucket 

func (s *BoltStateDB) DeleteTaskBucket(allocID, taskName string) error

DeleteTaskBucket is used to delete a task bucket if it exists.

func (*BoltStateDB) GetAllAllocations 

func (s *BoltStateDB) GetAllAllocations() ([]*structs.Allocation, map[string]error, error)

GetAllAllocations gets all allocations persisted by this client and returns a map of alloc ids to errors for any allocations that could not be restored.

If a fatal error was encountered it will be returned and the other two values will be nil.

func (*BoltStateDB) GetDeploymentStatus 

func (s *BoltStateDB) GetDeploymentStatus(allocID string) (*structs.AllocDeploymentStatus, error)

GetDeploymentStatus retrieves an allocation's DeploymentStatus or returns an error.

func (*BoltStateDB) GetDevicePluginState 

func (s *BoltStateDB) GetDevicePluginState() (*dmstate.PluginState, error)

GetDevicePluginState stores the device manager's plugin state or returns an error.

func (*BoltStateDB) GetDriverPluginState 

func (s *BoltStateDB) GetDriverPluginState() (*driverstate.PluginState, error)

GetDriverPluginState stores the driver manager's plugin state or returns an error.

func (*BoltStateDB) GetDynamicPluginRegistryState added in v0.11.0 

func (s *BoltStateDB) GetDynamicPluginRegistryState() (*dynamicplugins.RegistryState, error)

GetDynamicPluginRegistryState stores the dynamic plugin registry's registry state or returns an error.

func (*BoltStateDB) GetNetworkStatus added in v1.0.0 

func (s *BoltStateDB) GetNetworkStatus(allocID string) (*structs.AllocNetworkStatus, error)

GetNetworkStatus retrieves an allocation's NetworkStatus or returns an error.

func (*BoltStateDB) GetTaskRunnerState 

func (s *BoltStateDB) GetTaskRunnerState(allocID, taskName string) (*trstate.LocalState, *structs.TaskState, error)

GetTaskRunnerState returns the LocalState and TaskState for a TaskRunner. LocalState or TaskState will be nil if they do not exist.

If an error is encountered both LocalState and TaskState will be nil.

func (*BoltStateDB) Name 

func (s *BoltStateDB) Name() string

func (*BoltStateDB) PutAllocation 

func (s *BoltStateDB) PutAllocation(alloc *structs.Allocation, opts ...WriteOption) error

PutAllocation stores an allocation or returns an error.

func (*BoltStateDB) PutDeploymentStatus 

func (s *BoltStateDB) PutDeploymentStatus(allocID string, ds *structs.AllocDeploymentStatus) error

PutDeploymentStatus stores an allocation's DeploymentStatus or returns an error.

func (*BoltStateDB) PutDevicePluginState 

func (s *BoltStateDB) PutDevicePluginState(ps *dmstate.PluginState) error

PutDevicePluginState stores the device manager's plugin state or returns an error.

func (*BoltStateDB) PutDriverPluginState 

func (s *BoltStateDB) PutDriverPluginState(ps *driverstate.PluginState) error

PutDriverPluginState stores the driver manager's plugin state or returns an error.

func (*BoltStateDB) PutDynamicPluginRegistryState added in v0.11.0 

func (s *BoltStateDB) PutDynamicPluginRegistryState(ps *dynamicplugins.RegistryState) error

PutDynamicPluginRegistryState stores the dynamic plugin registry's state or returns an error.

func (*BoltStateDB) PutNetworkStatus added in v1.0.0 

func (s *BoltStateDB) PutNetworkStatus(allocID string, ds *structs.AllocNetworkStatus, opts ...WriteOption) error

PutDeploymentStatus stores an allocation's DeploymentStatus or returns an error.

func (*BoltStateDB) PutTaskRunnerLocalState 

func (s *BoltStateDB) PutTaskRunnerLocalState(allocID, taskName string, val *trstate.LocalState) error

PutTaskRunnerLocalState stores TaskRunner's LocalState or returns an error.

func (*BoltStateDB) PutTaskState 

func (s *BoltStateDB) PutTaskState(allocID, taskName string, state *structs.TaskState) error

PutTaskState stores a task's state or returns an error.

func (*BoltStateDB) Upgrade 

func (s *BoltStateDB) Upgrade() error

Upgrade bolt state db from 0.8 schema to 0.9 schema. Noop if already using 0.9 schema. Creates a backup before upgrading.

type ErrDB 

type ErrDB struct {
	// Allocs is a preset slice of allocations used in GetAllAllocations
	Allocs []*structs.Allocation
}

ErrDB implements a StateDB that returns errors on restore methods, used for testing

func (*ErrDB) Close 

func (m *ErrDB) Close() error

func (*ErrDB) DeleteAllocationBucket 

func (m *ErrDB) DeleteAllocationBucket(allocID string, opts ...WriteOption) error

func (*ErrDB) DeleteTaskBucket 

func (m *ErrDB) DeleteTaskBucket(allocID, taskName string) error

func (*ErrDB) GetAllAllocations 

func (m *ErrDB) GetAllAllocations() ([]*structs.Allocation, map[string]error, error)

func (*ErrDB) GetDeploymentStatus 

func (m *ErrDB) GetDeploymentStatus(allocID string) (*structs.AllocDeploymentStatus, error)

func (*ErrDB) GetDevicePluginState 

func (m *ErrDB) GetDevicePluginState() (*dmstate.PluginState, error)

GetDevicePluginState stores the device manager's plugin state or returns an error.

func (*ErrDB) GetDriverPluginState 

func (m *ErrDB) GetDriverPluginState() (*driverstate.PluginState, error)

func (*ErrDB) GetDynamicPluginRegistryState added in v1.0.0 

func (m *ErrDB) GetDynamicPluginRegistryState() (*dynamicplugins.RegistryState, error)

func (*ErrDB) GetNetworkStatus added in v1.0.0 

func (m *ErrDB) GetNetworkStatus(allocID string) (*structs.AllocNetworkStatus, error)

func (*ErrDB) GetTaskRunnerState 

func (m *ErrDB) GetTaskRunnerState(allocID string, taskName string) (*state.LocalState, *structs.TaskState, error)

func (*ErrDB) Name 

func (m *ErrDB) Name() string

func (*ErrDB) PutAllocation 

func (m *ErrDB) PutAllocation(alloc *structs.Allocation, opts ...WriteOption) error

func (*ErrDB) PutDeploymentStatus 

func (m *ErrDB) PutDeploymentStatus(allocID string, ds *structs.AllocDeploymentStatus) error

func (*ErrDB) PutDevicePluginState 

func (m *ErrDB) PutDevicePluginState(ps *dmstate.PluginState) error

func (*ErrDB) PutDriverPluginState 

func (m *ErrDB) PutDriverPluginState(ps *driverstate.PluginState) error

func (*ErrDB) PutDynamicPluginRegistryState added in v1.0.0 

func (m *ErrDB) PutDynamicPluginRegistryState(state *dynamicplugins.RegistryState) error

func (*ErrDB) PutNetworkStatus added in v1.0.0 

func (m *ErrDB) PutNetworkStatus(allocID string, ns *structs.AllocNetworkStatus, opts ...WriteOption) error

func (*ErrDB) PutTaskRunnerLocalState 

func (m *ErrDB) PutTaskRunnerLocalState(allocID string, taskName string, val *state.LocalState) error

func (*ErrDB) PutTaskState 

func (m *ErrDB) PutTaskState(allocID string, taskName string, state *structs.TaskState) error

func (*ErrDB) Upgrade 

func (m *ErrDB) Upgrade() error

type MemDB 

type MemDB struct {
	// contains filtered or unexported fields
}

MemDB implements a StateDB that stores data in memory and should only be used for testing. All methods are safe for concurrent use.

func NewMemDB 

func NewMemDB(logger hclog.Logger) *MemDB

func (*MemDB) Close 

func (m *MemDB) Close() error

func (*MemDB) DeleteAllocationBucket 

func (m *MemDB) DeleteAllocationBucket(allocID string, opts ...WriteOption) error

func (*MemDB) DeleteTaskBucket 

func (m *MemDB) DeleteTaskBucket(allocID, taskName string) error

func (*MemDB) GetAllAllocations 

func (m *MemDB) GetAllAllocations() ([]*structs.Allocation, map[string]error, error)

func (*MemDB) GetDeploymentStatus 

func (m *MemDB) GetDeploymentStatus(allocID string) (*structs.AllocDeploymentStatus, error)

func (*MemDB) GetDevicePluginState 

func (m *MemDB) GetDevicePluginState() (*dmstate.PluginState, error)

GetDevicePluginState stores the device manager's plugin state or returns an error.

func (*MemDB) GetDriverPluginState 

func (m *MemDB) GetDriverPluginState() (*driverstate.PluginState, error)

func (*MemDB) GetDynamicPluginRegistryState added in v0.11.0 

func (m *MemDB) GetDynamicPluginRegistryState() (*dynamicplugins.RegistryState, error)

func (*MemDB) GetNetworkStatus added in v1.0.0 

func (m *MemDB) GetNetworkStatus(allocID string) (*structs.AllocNetworkStatus, error)

func (*MemDB) GetTaskRunnerState 

func (m *MemDB) GetTaskRunnerState(allocID string, taskName string) (*state.LocalState, *structs.TaskState, error)

func (*MemDB) Name 

func (m *MemDB) Name() string

func (*MemDB) PutAllocation 

func (m *MemDB) PutAllocation(alloc *structs.Allocation, opts ...WriteOption) error

func (*MemDB) PutDeploymentStatus 

func (m *MemDB) PutDeploymentStatus(allocID string, ds *structs.AllocDeploymentStatus) error

func (*MemDB) PutDevicePluginState 

func (m *MemDB) PutDevicePluginState(ps *dmstate.PluginState) error

func (*MemDB) PutDriverPluginState 

func (m *MemDB) PutDriverPluginState(ps *driverstate.PluginState) error

func (*MemDB) PutDynamicPluginRegistryState added in v0.11.0 

func (m *MemDB) PutDynamicPluginRegistryState(ps *dynamicplugins.RegistryState) error

func (*MemDB) PutNetworkStatus added in v1.0.0 

func (m *MemDB) PutNetworkStatus(allocID string, ns *structs.AllocNetworkStatus, opts ...WriteOption) error

func (*MemDB) PutTaskRunnerLocalState 

func (m *MemDB) PutTaskRunnerLocalState(allocID string, taskName string, val *state.LocalState) error

func (*MemDB) PutTaskState 

func (m *MemDB) PutTaskState(allocID string, taskName string, state *structs.TaskState) error

func (*MemDB) Upgrade 

func (m *MemDB) Upgrade() error

type NewStateDBFunc 

type NewStateDBFunc func(logger hclog.Logger, stateDir string) (StateDB, error)

NewStateDBFunc creates a StateDB given a state directory.

func GetStateDBFactory 

func GetStateDBFactory(devMode bool) NewStateDBFunc

GetStateDBFactory returns a func for creating a StateDB

type NoopDB 

type NoopDB struct{}

NoopDB implements a StateDB that does not persist any data.

func (NoopDB) Close 

func (n NoopDB) Close() error

func (NoopDB) DeleteAllocationBucket 

func (n NoopDB) DeleteAllocationBucket(allocID string, opts ...WriteOption) error

func (NoopDB) DeleteTaskBucket 

func (n NoopDB) DeleteTaskBucket(allocID, taskName string) error

func (NoopDB) GetAllAllocations 

func (n NoopDB) GetAllAllocations() ([]*structs.Allocation, map[string]error, error)

func (NoopDB) GetDeploymentStatus 

func (n NoopDB) GetDeploymentStatus(allocID string) (*structs.AllocDeploymentStatus, error)

func (NoopDB) GetDevicePluginState 

func (n NoopDB) GetDevicePluginState() (*dmstate.PluginState, error)

func (NoopDB) GetDriverPluginState 

func (n NoopDB) GetDriverPluginState() (*driverstate.PluginState, error)

func (NoopDB) GetDynamicPluginRegistryState added in v0.11.0 

func (n NoopDB) GetDynamicPluginRegistryState() (*dynamicplugins.RegistryState, error)

func (NoopDB) GetNetworkStatus added in v1.0.0 

func (n NoopDB) GetNetworkStatus(allocID string) (*structs.AllocNetworkStatus, error)

func (NoopDB) GetTaskRunnerState 

func (n NoopDB) GetTaskRunnerState(allocID string, taskName string) (*state.LocalState, *structs.TaskState, error)

func (NoopDB) Name 

func (n NoopDB) Name() string

func (NoopDB) PutAllocation 

func (n NoopDB) PutAllocation(alloc *structs.Allocation, opts ...WriteOption) error

func (NoopDB) PutDeploymentStatus 

func (n NoopDB) PutDeploymentStatus(allocID string, ds *structs.AllocDeploymentStatus) error

func (NoopDB) PutDevicePluginState 

func (n NoopDB) PutDevicePluginState(ps *dmstate.PluginState) error

func (NoopDB) PutDriverPluginState 

func (n NoopDB) PutDriverPluginState(ps *driverstate.PluginState) error

func (NoopDB) PutDynamicPluginRegistryState added in v0.11.0 

func (n NoopDB) PutDynamicPluginRegistryState(ps *dynamicplugins.RegistryState) error

func (NoopDB) PutNetworkStatus added in v1.0.0 

func (n NoopDB) PutNetworkStatus(allocID string, ds *structs.AllocNetworkStatus, opts ...WriteOption) error

func (NoopDB) PutTaskRunnerLocalState 

func (n NoopDB) PutTaskRunnerLocalState(allocID string, taskName string, val *state.LocalState) error

func (NoopDB) PutTaskState 

func (n NoopDB) PutTaskState(allocID string, taskName string, state *structs.TaskState) error

func (NoopDB) Upgrade 

func (n NoopDB) Upgrade() error

type StateDB 

type StateDB interface {
	// Name of implementation.
	Name() string

	// Upgrade ensures the layout of the database is at the latest version
	// or returns an error. Corrupt data will be dropped when possible.
	// Errors should be considered critical and unrecoverable.
	Upgrade() error

	// GetAllAllocations returns all valid allocations and a map of
	// allocation IDs to retrieval errors.
	//
	// If a single error is returned then both allocations and the map will be nil.
	GetAllAllocations() ([]*structs.Allocation, map[string]error, error)

	// PutAllocation stores an allocation or returns an error if it could
	// not be stored.
	PutAllocation(*structs.Allocation, ...WriteOption) error

	// Get/Put DeploymentStatus get and put the allocation's deployment
	// status. It may be nil.
	GetDeploymentStatus(allocID string) (*structs.AllocDeploymentStatus, error)
	PutDeploymentStatus(allocID string, ds *structs.AllocDeploymentStatus) error

	// Get/Put NetworkStatus get and put the allocation's network
	// status. It may be nil.
	GetNetworkStatus(allocID string) (*structs.AllocNetworkStatus, error)
	PutNetworkStatus(allocID string, ns *structs.AllocNetworkStatus, opts ...WriteOption) error

	// GetTaskRunnerState returns the LocalState and TaskState for a
	// TaskRunner. Either state may be nil if it is not found, but if an
	// error is encountered only the error will be non-nil.
	GetTaskRunnerState(allocID, taskName string) (*state.LocalState, *structs.TaskState, error)

	// PutTaskRunnerLocalTask stores the LocalState for a TaskRunner or
	// returns an error.
	PutTaskRunnerLocalState(allocID, taskName string, val *state.LocalState) error

	// PutTaskState stores the TaskState for a TaskRunner or returns an
	// error.
	PutTaskState(allocID, taskName string, state *structs.TaskState) error

	// DeleteTaskBucket deletes a task's state bucket if it exists. No
	// error is returned if it does not exist.
	DeleteTaskBucket(allocID, taskName string) error

	// DeleteAllocationBucket deletes an allocation's state bucket if it
	// exists. No error is returned if it does not exist.
	DeleteAllocationBucket(allocID string, opts ...WriteOption) error

	// GetDevicePluginState is used to retrieve the device manager's plugin
	// state.
	GetDevicePluginState() (*dmstate.PluginState, error)

	// PutDevicePluginState is used to store the device manager's plugin
	// state.
	PutDevicePluginState(state *dmstate.PluginState) error

	// GetDriverPluginState is used to retrieve the driver manager's plugin
	// state.
	GetDriverPluginState() (*driverstate.PluginState, error)

	// PutDriverPluginState is used to store the driver manager's plugin
	// state.
	PutDriverPluginState(state *driverstate.PluginState) error

	// GetDynamicPluginRegistryState is used to retrieve a dynamic plugin manager's state.
	GetDynamicPluginRegistryState() (*dynamicplugins.RegistryState, error)

	// PutDynamicPluginRegistryState is used to store the dynamic plugin manager's state.
	PutDynamicPluginRegistryState(state *dynamicplugins.RegistryState) error

	// Close the database. Unsafe for further use after calling regardless
	// of return value.
	Close() error
}

StateDB implementations store and load Nomad client state.

func NewBoltStateDB 

func NewBoltStateDB(logger hclog.Logger, stateDir string) (StateDB, error)

NewBoltStateDB creates or opens an existing boltdb state file or returns an error.

type TaskRunnerHandle08 

type TaskRunnerHandle08 struct {
	// Docker specific handle info
	ContainerID string `json:"ContainerID"`
	Image       string `json:"Image"`

	// LXC specific handle info
	ContainerName string `json:"ContainerName"`
	LxcPath       string `json:"LxcPath"`

	// Executor reattach config
	PluginConfig struct {
		Pid      int    `json:"Pid"`
		AddrNet  string `json:"AddrNet"`
		AddrName string `json:"AddrName"`
	} `json:"PluginConfig"`
}

func UnmarshalPre09HandleID 

func UnmarshalPre09HandleID(raw []byte) (*TaskRunnerHandle08, error)

UnmarshalPre09HandleID decodes the pre09 json encoded handle ID

func (*TaskRunnerHandle08) ReattachConfig 

func (t *TaskRunnerHandle08) ReattachConfig() *pstructs.ReattachConfig

type WriteOption added in v1.0.0 

type WriteOption func(*WriteOptions)

WriteOption is a function that modifies WriteOptions struct above.

func WithBatchMode added in v1.0.0 

func WithBatchMode() WriteOption

Enable Batch mode for write requests (Put* and Delete* operations above).

type WriteOptions added in v1.0.0 

type WriteOptions struct {
	// In Batch mode, concurrent writes (Put* and Delete* operations above) are
	// coalesced into a single transaction, increasing write performance. To benefit
	// from this mode, writes must happen concurrently in goroutines, as every write
	// request still waits for the shared transaction to commit before returning.
	// See https://github.com/boltdb/bolt#batch-read-write-transactions for details.
	// This mode is only supported for BoltDB state backend and is ignored in other backends.
	BatchMode bool
}

WriteOptions adjusts the way the data is persisted by the StateDB above. Default is zero/false values for all fields. To provide different values, use With* functions below, like this: statedb.PutAllocation(alloc, WithBatchMode())

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