Updated client now supports subscription to chain notifications and RPC
switch between provided RPC endpoints.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
It is much more convenient to skip source creation.
Also fix some bugs:
1. `cryptoSource.Int63()` now returns number in [0, 1<<63) as required
by `rand.Source` interface.
2. Replace `cryptoSource.Uint63()` with `cryptoSource.Uint64` to allow
generate uint64 numbers directly (see rand.Source64 docs).
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Make `Client.EnableNotarySupport` method to call `NNSContractAddress`
for proxy contract if it is not specified in corresponding option.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Do not set `till` as some constant:
use maximum of two values instead:
1. currentDepositTill;
2. currentHeight+epochDuration+constant.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Add `NotarySignAndInvokeTX` method to morph
client. This function allows invoking notary
request with passed main TX(not creating a
new one). It signs passed main TX with
client's key.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Add `NotaryInvokeNotAlpha` to low-level
client. It creates and sends notary request
that must be signed by Alphabet nodes, but
does not sign it by current node's private
key.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
`fallbackTime` is delta b/w `ValidUntilBlock` of
the main transaction and block when `fallback`
transaction is sent.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Caching is performed inside `GetNativeContractHash` method of neo-go client,
so the additional cache level is redundant.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement `error` interface on new `neofsError` type which is a wrapper over
NeoFS-specific error. Wrap all `Client` errors except neo-go client API ones
into `neofsError`. Wrapped errors are going to be used for multi-endpoint
loop control.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
There is a need to work with a set of Neo RPC nodes in order not to depend
on the failure of some nodes while others are active.
Support "multi-client" mode of morph `Client` entity. If instance is not
"multi-client", it works as before. Constructor `New` creates multi-client,
and each method performs iterating over the fixed set of endpoints until
success. Opened client connections are cached (without eviction for now).
Storage (as earlier) and IR (from now) nodes can be configured with multiple
Neo endpoints. As above, `New` creates multi-client instance, so we don't
need initialization changes on app-side.
`Wait` and `GetDesignateHash` methods of `Client` return an error from now
to detect connection errors. `NotaryEnabled` method is removed as unused.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Do not read `without_notary` config value from env.
Make morph client constructor return client without
notary support. Enabling notary support should be done
with public `EnableNotarySupport` method separately.
Notary availability is deducted with client. Further,
if notary is presented on chain its support is
enabled at the corresponding client.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
To enable notary support in main chain, notary subsystem should not get
alphabet keys from (main chain) committee. This key fetcher is now
separated and may be overwritten by `WithAlphabetSource` option.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
With neo-go v0.94.1 verification fee can be calculated
precisely and alphabet keys are fetched from committee
instead of network map contract.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Add checking if returned error contains
"already on chain" substring. Do not
consider that behavior to be erroneous.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
If non-"HALT" `State` occurs after
calling `InvokeFunction` NeoGo client
method, add `FaultException` information
to returning error. Add returning state
check to `NotaryInvoke` method of the
morph/client.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
New neo-go version provides:
- new type for roles in `RoleManagement` contract,
- methods to get keys from `RoleManagement` contract,
- new way to sign notary transaction.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Committee invocations use other M/N parameters of multi signature
signer address. For committee M = N/2 + 1
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
