A particular status code does not imply that a connection has not been
established. However, `Dial()` requires user to call `Close()` only if
the error was nil. Thus, it is `Dial()` responsibility to close
everything if it returns an error.
Introduced after the gRPC update in #270 (6009d089fc).
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
After removing `grpc.Dial` from client `DialTimeout` used only if
custom dialer provided. Client uses `BalanceOf` instead of `grpc.Dial`,
so it is required to use `DialTimeout` to not to use RPC timeout.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
After api-go upgrade created client doesn't establish connection after created,
so RPC call is required to establish and check connection.
RPC call returns status error, so conversion from status error to context error
is required to satisfy Dial contract and unit tests.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Passing `nil` context to `rpc.Balance` leads to panic. To prevent panic,
we need to provide some default context in `Dial`.
Signed-off-by: Leonard Lyubich <ctulhurider@gmail.com>
In previous implementation of `Client.Dial` there was no ability to
specify parent context (e.g. global application context).
Add `PrmDial.SetContext` method which accepts optional base dial
context. Use the context to open client connection or fall back to using
`context.Background()`.
Upgraded version of `github.com/nspcc-dev/neofs-api-go/v2` module
also fixes the problem when dial timeout didn't work properly.
Signed-off-by: Leonard Lyubich <ctulhurider@gmail.com>
There is a need to test each `Client` operation. In previous
implementation `Client` was based on real socket connection. This didn't
allow to test the `Client` without OS resources. In order to write
convenient and useful unit tests we need to slightly refactor the code.
Introduce `neoFSAPIServer` interface as a provider of `Client` type's
abstraction from the exact NeoFS API server. Add `netMapSnapshot` method
for initial implementation. Define core interface provider used in real
code. Set `coreServer` as an underlying `neoFSAPIServer` in
`Client.Dial`. Cover `Client.NetMapSnapshot` method with unit tests
using the opportunity to override the server.
From now client library can be tested not only with real physical
listeners but with imitations.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Get rid of `Option` pattern. Define `Init`, `Dial` and `Close` methods
for the corresponding stages of use.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Extend docs with supported status returns. Add several helper functions
which allow to check the particular status.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Define base `Status` interface. Provide the functionality to distinguish
success and failure returns. Provide functionality to transport statuses
over NeoFS API V2 protocol. Support success `OK` and failure `INTERNAL`
returns.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
