Define component on app-side that implements RemoteWriterProvider with next
logic:
* if ServerInfo is nil, call internal dead end provider;
* if address in ServerInfo equals to local node's address, do nothing;
* otherwise create API client instance via client cache and return the
wrapper over it.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement wrapper over StorageEngine on app-side that iterates over the
values returned by ListContainers+ContainerSize method pair. Component will
be used as the source of local metrics.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement wrapper over netmap and container storages on app-side that builds
placement vectors by next steps:
* read container from storage;
* read network map from storage by epoch number;
* build container nodes according to placement policy;
* build placement vectors with epoch-dependent pivot.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement wrapper over API client on app-side that passes used space values
to it. Values are buffered on Put call and sent on Close call.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement wrapper over Container contract's client on app-side that passes
used space values to it. Uses a fixed public key, whose value will be the
key of the local storage node.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement route Builder interface on wrapper over the container placement
builder, Component implies exactly one transfer to each of the most weight
nodes of the container (according to some weighing algorithm).
Implementation is planned for use when transferring local estimates of
storage nodes.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement a component for transmitting the value of the used container space
along a route defined in the system. Implement WriterProvider interface on
it. By implementation, it is the link between the route planner and the
point-to-point transmitter, and abstracts from the implementation of both of
them. In the future, this implementation will be used as a transmitter of
local estimates of storage nodes among themselves.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement API methods of the Container contracts client corresponding
to the calls of the contract for storing the used space of the container
("putContainerSize", "getContainerSize", "listContainerSizes"). Extend
the wrapper over the client with methods abstracted from sidechen calls.
In particular, the method of storing the value will be used to record
the estimates of the used space of containers calculated by the network
participants.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement functions to wrap Writer or Iterator. The resulting wrapper
provides WriterProvider or IteratorProvider interface respectively.
Such a wrapper can be used as a single storage instance provider
regardless of context.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement a component that stores the values of the used space of
containers. The storage allows you to write several values for a fixed
container and epoch number, and read the averaged estimates of all
accumulated values. All values are stored in memory. This component is
planned to be used as an accumulator of opinions from various network
participants about the fullness of the container.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement a component that connects the value stores of the used space of
containers. Implement the Start/Stop operations on it, which will later
become the application handlers of the corresponding events from the
sidechain. The main task of the controller is to temporarily synchronize the
stages of calculating the global estimate of the used space in the
container. The details of the score calculation (the way of collecting /
transmitting local scores, the final score formula and writing to the
contract) are encapsulated in the dependency components, the controller is
abstracted from them.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
There are two notifications:
- start estimation notification produced at the beginning of the
epoch,
- stop estimation notifications should be produced before
basic audit settlement starts.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This small refactoring adds `blocktimer.go` file with
all timer related function and constructors. This way
we can create all timers in one place (at the end of
innerring.Server constructor).
To do that we had to move timer reset into global
server state so it can be accessed by netmap
processor.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
There is no point of making separate `Fee` and `NoFee`
wrappers because all reading operations are free disregarding
of fee value in static client. However we can use these same
wrappers so send transaction.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Pass handler of audit settlement event to netmap event processor. Generate
AuditEvent in during new epoch processing.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Define a processor of events related to monetary transactions. Define
audit-related event. Provide an interface for processing the audit payout
event.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Use client with extraFee instead of readOnlyFee. Rename
NewNoFeeBalanceClient to NewBalanceClient since no-fee client is no longer
used.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Do not pass zero transfers from the calculation table to Exchanger. Revert
transfers with negative amount since Exchanger interface requires positive
amounts of funds.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Move control of the minimum cost of payment for the audit from the
implementation of the Exchanger to the place where the amount is calculated.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Calculate payments to storage nodes for the passed audit when changing the
epoch. The calculation results are wrapped in a call to the Balance contract
(one transaction per user-to-user transfer).
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement component that analyzes audit results and generates transactions
for payment of awards for successfully passed audit. When calculating the
total fee, the declared price of the node (attribute) and the total volume
of storage groups, which were successfully audited by the container, are
taken into account. In one call the calculator processes all audit results
for the previous epoch (relative to the calculated parameter).
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
In previous implementation handler was not called more the one time after
Reset. It was caused by tick counter not being reset inside Reset method.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Container listing already supported in the metabase for `engine.List`
operation. To get container statistics engine should provide both the
option to get container volume estimation and list of all containers.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Objects of one container can be split among shards, so engine
should iterate over all available shards to sum all size
estimations.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Storage nodes keep container size estimation so they
can announce this info and hope for some basic income
settlements. This is also useful for monitoring.
Container size does not include non regular or inhumed
object sizes.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Listen to new blocks from mainnet until the required fix in neo-go lib is
released (https://github.com/nspcc-dev/neo-go/pull/1687).
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Replace WSClient.Init call from the body of BlockNotifications method to
constructor New since Init should be called before working with client
according to neo-go docs.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Write error returned by BlockNotifications() call ins listenLoop method body
to error channel only if it is procided. Otherwise, write debug log message.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Replace block channel's initialization from BlockNotifications method body
to Subscriber's constructor in order to prevent potential writing to nil
channel.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Call handler of the fractional block interval once between base interval
ticks by default. Add option to call handler of fractional block interval
multiple times (N times if fractional interval == BASE_INTERVAL / N).
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Extend Listener with RegisterBlockHandler method. All block handlers are
called on each block read from Subscriber.BlockNotifications channel.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Call SubscribeForNewBlocks in Subscriber's constructor. Provide
BlockNotifications interface method that returns block channel. Write new
blocks to the channel on notification events with BlockEventID type.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
