Allow to pass connection to a client #26

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opened 2023-05-02 08:31:43 +00:00 by fyrchik · 2 comments

fyrchik commented

2023-05-02 08:31:43 +00:00

Owner

I suggest to allow passing raw *grpc.ClientConn as an argument to the client. If it is provided, we use the specified connection and (may be) do not close it.

cc @TrueCloudLab/storage-core-committers @TrueCloudLab/storage-core-developers

Client is just an interface on top of some gRPC connection. Currently, we Dial/Init inside, which makes it impossible to implement some connection pooling. Debugging is also not pleasant, especially if you are a fan of printf-style. I suggest to allow passing raw `*grpc.ClientConn` as an argument to the client. If it is provided, we use the specified connection and (may be) do not close it. cc @TrueCloudLab/storage-core-committers @TrueCloudLab/storage-core-developers

fyrchik added the

enhancement

discussion

labels 2023-05-02 08:31:57 +00:00

fyrchik added this to the v2.16.0 milestone 2023-05-02 08:31:59 +00:00

fyrchik removed this from the v2.16.0 milestone 2023-05-02 08:32:08 +00:00

ale64bit commented

2023-05-18 08:59:58 +00:00

Collaborator

The gRPC connection itself (namely, ClientConn which is a virtual connection) already does pooling, multiplexing and even manages reconnections. Why do we need to do any caching on our side?

The gRPC connection itself (namely, `ClientConn` which is a virtual connection) already does pooling, multiplexing and even manages reconnections. Why do we need to do any caching on our side?

aarifullin referenced this issue

2023-05-23 15:54:06 +00:00

[#26] netmap: Add NOT and UNIQUE keywords #35

fyrchik referenced this issue from a commit

2023-05-31 10:03:27 +00:00

[#26] netmap: Add NOT and UNIQUE keywords

fyrchik commented

2023-06-02 08:52:03 +00:00

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We already have this https://git.frostfs.info/TrueCloudLab/frostfs-api-go/src/branch/master/rpc/client/options.go#L117

@ale64bit you are right, but AFAIK there is no way to prioritize particular RPCs. Cockroach does sth similar with connections for example bf25b7bf93/pkg/rpc/connection_class.go (L20)

Another possibility is to have multiple endpoints to the same node.

We already have this https://git.frostfs.info/TrueCloudLab/frostfs-api-go/src/branch/master/rpc/client/options.go#L117 @ale64bit you are right, but AFAIK there is no way to prioritize particular RPCs. Cockroach does sth similar with connections for example https://github.com/cockroachdb/cockroach/blob/bf25b7bf93a6b8e57557813957da263389796bb4/pkg/rpc/connection_class.go#L20 Another possibility is to have multiple endpoints to the same node.

fyrchik closed this issue

2023-06-02 08:52:04 +00:00