state

package
v0.20.0 Latest Latest
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 Go to latest Published: Jul 24, 2018 License: Apache-2.0 Imports: 7 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetMutableAccount 

func GetMutableAccount(getter AccountGetter, address crypto.Address) (*acm.MutableAccount, error)

func GlobalAccountPermissions 

func GlobalAccountPermissions(getter AccountGetter) permission.AccountPermissions

Get global permissions from the account at GlobalPermissionsAddress

func GlobalPermissionsAccount 

func GlobalPermissionsAccount(getter AccountGetter) acm.Account

Types

type AccountGetter 

type AccountGetter interface {
	// Get an account by its address return nil if it does not exist (which should not be an error)
	GetAccount(address crypto.Address) (acm.Account, error)
}

type AccountIterable 

type AccountIterable interface {
	// Iterates through accounts calling passed function once per account, if the consumer
	// returns true the iteration breaks and returns true to indicate it iteration
	// was escaped
	IterateAccounts(consumer func(acm.Account) (stop bool)) (stopped bool, err error)
}

type AccountUpdater 

type AccountUpdater interface {
	// Updates the fields of updatedAccount by address, creating the account
	// if it does not exist
	UpdateAccount(updatedAccount acm.Account) error
	// Remove the account at address
	RemoveAccount(address crypto.Address) error
}

type Cache 

type Cache struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func NewCache 

func NewCache(backend Reader, options ...CacheOption) *Cache

Returns a Cache that wraps an underlying Reader to use on a cache miss, can write to an output Writer via Sync. Goroutine safe for concurrent access.

func (*Cache) Flush 

func (cache *Cache) Flush(output Writer, backend Reader) error

Syncs the Cache to output and Resets it to use backend as Reader

func (*Cache) GetAccount 

func (cache *Cache) GetAccount(address crypto.Address) (acm.Account, error)

func (*Cache) GetStorage 

func (cache *Cache) GetStorage(address crypto.Address, key binary.Word256) (binary.Word256, error)

func (*Cache) IterateCachedAccount 

func (cache *Cache) IterateCachedAccount(consumer func(acm.Account) (stop bool)) (stopped bool, err error)

Iterates over all cached accounts first in cache and then in backend until consumer returns true for 'stop'

func (*Cache) IterateCachedStorage 

func (cache *Cache) IterateCachedStorage(address crypto.Address,
	consumer func(key, value binary.Word256) (stop bool)) (stopped bool, err error)

Iterates over all cached storage items first in cache and then in backend until consumer returns true for 'stop'

func (*Cache) RemoveAccount 

func (cache *Cache) RemoveAccount(address crypto.Address) error

func (*Cache) Reset 

func (cache *Cache) Reset(backend Reader)

Resets the cache to empty initialising the backing map to the same size as the previous iteration.

func (*Cache) SetStorage 

func (cache *Cache) SetStorage(address crypto.Address, key binary.Word256, value binary.Word256) error

NOTE: Set value to zero to remove.

func (*Cache) String 

func (cache *Cache) String() string

func (*Cache) Sync 

func (cache *Cache) Sync(state Writer) error

Syncs changes to the backend in deterministic order. Sends storage updates before updating the account they belong so that storage values can be taken account of in the update.

func (*Cache) UpdateAccount 

func (cache *Cache) UpdateAccount(account acm.Account) error

type CacheOption 

type CacheOption func(*Cache)

func Name 

func Name(name string) CacheOption

type Iterable 

type Iterable interface {
	AccountIterable
	StorageIterable
}

type IterableReader 

type IterableReader interface {
	Iterable
	Reader
}

Read and list account and storage state

type IterableReaderWriter 

type IterableReaderWriter interface {
	Iterable
	Reader
	Writer
}

type MemoryState 

type MemoryState struct {
	Accounts map[crypto.Address]acm.Account
	Storage  map[crypto.Address]map[binary.Word256]binary.Word256
}

func NewMemoryState 

func NewMemoryState() *MemoryState

Get an in-memory state IterableReader

func (*MemoryState) GetAccount 

func (ms *MemoryState) GetAccount(address crypto.Address) (acm.Account, error)

func (*MemoryState) GetStorage 

func (ms *MemoryState) GetStorage(address crypto.Address, key binary.Word256) (binary.Word256, error)

func (*MemoryState) IterateAccounts 

func (ms *MemoryState) IterateAccounts(consumer func(acm.Account) (stop bool)) (stopped bool, err error)

func (*MemoryState) IterateStorage 

func (ms *MemoryState) IterateStorage(address crypto.Address, consumer func(key, value binary.Word256) (stop bool)) (stopped bool, err error)

func (*MemoryState) RemoveAccount 

func (ms *MemoryState) RemoveAccount(address crypto.Address) error

func (*MemoryState) SetStorage 

func (ms *MemoryState) SetStorage(address crypto.Address, key, value binary.Word256) error

func (*MemoryState) UpdateAccount 

func (ms *MemoryState) UpdateAccount(updatedAccount acm.Account) error

type Reader 

type Reader interface {
	AccountGetter
	StorageGetter
}

Read-only account and storage state

type ReaderWriter 

type ReaderWriter interface {
	Reader
	Writer
}

Read and write account and storage state

type StorageGetter 

type StorageGetter interface {
	// Retrieve a 32-byte value stored at key for the account at address, return Zero256 if key does not exist but
	// error if address does not
	GetStorage(address crypto.Address, key binary.Word256) (value binary.Word256, err error)
}

type StorageIterable 

type StorageIterable interface {
	// Iterates through the storage of account ad address calling the passed function once per account,
	// if the iterator function returns true the iteration breaks and returns true to indicate it iteration
	// was escaped
	IterateStorage(address crypto.Address, consumer func(key, value binary.Word256) (stop bool)) (stopped bool, err error)
}

type StorageSetter 

type StorageSetter interface {
	// Store a 32-byte value at key for the account at address, setting to Zero256 removes the key
	SetStorage(address crypto.Address, key, value binary.Word256) error
}

type Writer 

type Writer interface {
	AccountUpdater
	StorageSetter
}

Source Files

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