8e3173eacd
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>
35 lines
1.1 KiB
Go
35 lines
1.1 KiB
Go
package client
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import (
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"context"
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"fmt"
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v2netmap "github.com/nspcc-dev/neofs-api-go/v2/netmap"
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rpcapi "github.com/nspcc-dev/neofs-api-go/v2/rpc"
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"github.com/nspcc-dev/neofs-api-go/v2/rpc/client"
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)
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// interface of NeoFS API server. Exists for test purposes only.
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type neoFSAPIServer interface {
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netMapSnapshot(context.Context, v2netmap.SnapshotRequest) (*v2netmap.SnapshotResponse, error)
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}
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// wrapper over real client connection which communicates over NeoFS API protocol.
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// Provides neoFSAPIServer for Client instances used in real applications.
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type coreServer client.Client
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// unifies errors of all RPC.
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func rpcErr(e error) error {
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return fmt.Errorf("rpc failure: %w", e)
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}
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// executes NetmapService.NetmapSnapshot RPC declared in NeoFS API protocol
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// using underlying client.Client.
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func (x *coreServer) netMapSnapshot(ctx context.Context, req v2netmap.SnapshotRequest) (*v2netmap.SnapshotResponse, error) {
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resp, err := rpcapi.NetMapSnapshot((*client.Client)(x), &req, client.WithContext(ctx))
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if err != nil {
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return nil, rpcErr(err)
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}
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return resp, nil
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}
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