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|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| // Copyright (c) 2020 Minoru Osuka | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package client | ||
|
|
||
| import ( | ||
| "context" | ||
| "log" | ||
| "math" | ||
|
|
||
| "github.com/golang/protobuf/ptypes/empty" | ||
| "github.com/mosuka/cete/errors" | ||
| "github.com/mosuka/cete/protobuf" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
|
|
||
| type GRPCClient struct { | ||
| ctx context.Context | ||
| cancel context.CancelFunc | ||
| conn *grpc.ClientConn | ||
| client protobuf.KVSClient | ||
|
|
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| logger *log.Logger | ||
| } | ||
|
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| func NewGRPCClient(address string) (*GRPCClient, error) { | ||
| baseCtx := context.TODO() | ||
| ctx, cancel := context.WithCancel(baseCtx) | ||
|
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| dialOpts := []grpc.DialOption{ | ||
| grpc.WithInsecure(), | ||
| grpc.WithDefaultCallOptions( | ||
| grpc.MaxCallSendMsgSize(math.MaxInt64), | ||
| grpc.MaxCallRecvMsgSize(math.MaxInt64), | ||
| ), | ||
| } | ||
|
|
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| conn, err := grpc.DialContext(ctx, address, dialOpts...) | ||
| if err != nil { | ||
| cancel() | ||
| return nil, err | ||
| } | ||
|
|
||
| return &GRPCClient{ | ||
| ctx: ctx, | ||
| cancel: cancel, | ||
| conn: conn, | ||
| client: protobuf.NewKVSClient(conn), | ||
| }, nil | ||
| } | ||
|
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| func (c *GRPCClient) Close() error { | ||
| c.cancel() | ||
| if c.conn != nil { | ||
| return c.conn.Close() | ||
| } | ||
|
|
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| return c.ctx.Err() | ||
| } | ||
|
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| func (c *GRPCClient) Target() string { | ||
| return c.conn.Target() | ||
| } | ||
|
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| func (c *GRPCClient) Join(req *protobuf.JoinRequest, opts ...grpc.CallOption) error { | ||
| if _, err := c.client.Join(c.ctx, req, opts...); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| func (c *GRPCClient) Leave(req *protobuf.LeaveRequest, opts ...grpc.CallOption) error { | ||
| if _, err := c.client.Leave(c.ctx, req, opts...); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| func (c *GRPCClient) Node(opts ...grpc.CallOption) (*protobuf.NodeResponse, error) { | ||
| if resp, err := c.client.Node(c.ctx, &empty.Empty{}, opts...); err != nil { | ||
| return nil, err | ||
| } else { | ||
| return resp, nil | ||
| } | ||
| } | ||
|
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| func (c *GRPCClient) Cluster(opts ...grpc.CallOption) (*protobuf.ClusterResponse, error) { | ||
| if resp, err := c.client.Cluster(c.ctx, &empty.Empty{}, opts...); err != nil { | ||
| return nil, err | ||
| } else { | ||
| return resp, nil | ||
| } | ||
| } | ||
|
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| func (c *GRPCClient) Snapshot(opts ...grpc.CallOption) error { | ||
| if _, err := c.client.Snapshot(c.ctx, &empty.Empty{}); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| func (c *GRPCClient) Get(req *protobuf.GetRequest, opts ...grpc.CallOption) (*protobuf.GetResponse, error) { | ||
| if resp, err := c.client.Get(c.ctx, req, opts...); err != nil { | ||
| st, _ := status.FromError(err) | ||
| switch st.Code() { | ||
| case codes.NotFound: | ||
| return nil, errors.ErrNotFound | ||
| default: | ||
| return nil, err | ||
| } | ||
| } else { | ||
| return resp, nil | ||
| } | ||
| } | ||
|
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| func (c *GRPCClient) Put(req *protobuf.PutRequest, opts ...grpc.CallOption) error { | ||
| if _, err := c.client.Put(c.ctx, req, opts...); err != nil { | ||
| return err | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func (c *GRPCClient) Delete(req *protobuf.DeleteRequest, opts ...grpc.CallOption) error { | ||
| if _, err := c.client.Delete(c.ctx, req, opts...); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| func (c *GRPCClient) Watch(req *empty.Empty, opts ...grpc.CallOption) (protobuf.KVS_WatchClient, error) { | ||
| return c.client.Watch(c.ctx, req, opts...) | ||
| } | ||
|
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| func (c *GRPCClient) Metrics(opts ...grpc.CallOption) (*protobuf.MetricsResponse, error) { | ||
| if resp, err := c.client.Metrics(c.ctx, &empty.Empty{}, opts...); err != nil { | ||
| return nil, err | ||
| } else { | ||
| return resp, nil | ||
| } | ||
| } |
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