/
proxy_query_partition_command.go
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/
proxy_query_partition_command.go
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// Copyright 2014-2022 Aerospike, Inc.
//
// 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 aerospike
import (
"math/rand"
kvs "github.com/aerospike/aerospike-client-go/v7/proto/kvs"
)
type grpcQueryPartitionCommand struct {
baseMultiCommand
policy *QueryPolicy
writePolicy *WritePolicy
statement *Statement
partitionFilter *PartitionFilter
operations []*Operation
}
func newGrpcQueryPartitionCommand(
policy *QueryPolicy,
writePolicy *WritePolicy,
statement *Statement,
operations []*Operation,
partitionTracker *partitionTracker,
partitionFilter *PartitionFilter,
recordset *Recordset,
) *grpcQueryPartitionCommand {
cmd := &grpcQueryPartitionCommand{
baseMultiCommand: *newCorrectStreamingMultiCommand(recordset, statement.Namespace),
policy: policy,
writePolicy: writePolicy,
statement: statement,
partitionFilter: partitionFilter,
operations: operations,
}
cmd.rawCDT = policy.RawCDT
cmd.tracker = partitionTracker
cmd.terminationErrorType = statement.terminationError()
cmd.nodePartitions = newNodePartitions(nil, _PARTITIONS)
return cmd
}
func (cmd *grpcQueryPartitionCommand) getPolicy(ifc command) Policy {
return cmd.policy
}
func (cmd *grpcQueryPartitionCommand) writeBuffer(ifc command) Error {
return cmd.setQuery(cmd.policy, cmd.writePolicy, cmd.statement, cmd.recordset.TaskId(), cmd.operations, cmd.writePolicy != nil, nil)
}
func (cmd *grpcQueryPartitionCommand) shouldRetry(e Error) bool {
panic("UNREACHABLE")
}
func (cmd *grpcQueryPartitionCommand) Execute() Error {
panic("UNREACHABLE")
}
func (cmd *grpcQueryPartitionCommand) ExecuteGRPC(clnt *ProxyClient) Error {
defer cmd.recordset.signalEnd()
cmd.dataBuffer = bufPool.Get().([]byte)
defer cmd.grpcPutBufferBack()
err := cmd.prepareBuffer(cmd, cmd.policy.deadline())
if err != nil {
return err
}
queryReq := &kvs.QueryRequest{
Statement: cmd.statement.grpc(cmd.policy, cmd.operations),
PartitionFilter: cmd.partitionFilter.grpc(),
QueryPolicy: cmd.policy.grpc(),
}
req := kvs.AerospikeRequestPayload{
Id: rand.Uint32(),
Iteration: 1,
Payload: cmd.dataBuffer[:cmd.dataOffset],
QueryRequest: queryReq,
}
conn, err := clnt.grpcConn()
if err != nil {
return err
}
client := kvs.NewQueryClient(conn)
ctx := cmd.policy.grpcDeadlineContext()
streamRes, gerr := client.Query(ctx, &req)
if gerr != nil {
return newGrpcError(gerr, gerr.Error())
}
cmd.commandWasSent = true
readCallback := func() ([]byte, Error) {
if cmd.grpcEOS {
return nil, errGRPCStreamEnd
}
res, gerr := streamRes.Recv()
if gerr != nil {
e := newGrpcError(gerr)
cmd.recordset.sendError(e)
return nil, e
}
if res.Status != 0 {
e := newGrpcStatusError(res)
cmd.recordset.sendError(e)
return res.Payload, e
}
cmd.grpcEOS = !res.HasNext
return res.Payload, nil
}
cmd.conn = newGrpcFakeConnection(nil, readCallback)
err = cmd.parseResult(cmd, cmd.conn)
if err != nil && err != errGRPCStreamEnd {
cmd.recordset.sendError(err)
return err
}
done, err := cmd.tracker.isComplete(false, &cmd.policy.BasePolicy, []*nodePartitions{cmd.nodePartitions})
if !cmd.recordset.IsActive() || done || err != nil {
// Query is complete.
if err != nil {
cmd.tracker.partitionError()
cmd.recordset.sendError(err)
}
}
clnt.returnGrpcConnToPool(conn)
return nil
}