mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 21:09:06 +08:00
85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package flowgraph
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import (
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"github.com/milvus-io/milvus/internal/msgstream"
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"github.com/milvus-io/milvus/internal/util/trace"
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"github.com/opentracing/opentracing-go"
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)
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type InputNode struct {
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BaseNode
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inStream *msgstream.MsgStream
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name string
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}
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func (inNode *InputNode) IsInputNode() bool {
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return true
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}
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func (inNode *InputNode) Close() {
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(*inNode.inStream).Close()
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}
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func (inNode *InputNode) Name() string {
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return inNode.name
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}
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func (inNode *InputNode) InStream() *msgstream.MsgStream {
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return inNode.inStream
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}
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// empty input and return one *Msg
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func (inNode *InputNode) Operate(in []Msg) []Msg {
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//fmt.Println("Do InputNode operation")
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msgPack := (*inNode.inStream).Consume()
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// TODO: add status
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if msgPack == nil {
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return nil
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}
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var spans []opentracing.Span
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for _, msg := range msgPack.Msgs {
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sp, ctx := trace.StartSpanFromContext(msg.TraceCtx())
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spans = append(spans, sp)
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msg.SetTraceCtx(ctx)
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}
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var msgStreamMsg Msg = &MsgStreamMsg{
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tsMessages: msgPack.Msgs,
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timestampMin: msgPack.BeginTs,
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timestampMax: msgPack.EndTs,
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startPositions: msgPack.StartPositions,
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endPositions: msgPack.EndPositions,
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}
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for _, span := range spans {
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span.Finish()
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}
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return []Msg{msgStreamMsg}
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}
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func NewInputNode(inStream *msgstream.MsgStream, nodeName string, maxQueueLength int32, maxParallelism int32) *InputNode {
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baseNode := BaseNode{}
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baseNode.SetMaxQueueLength(maxQueueLength)
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baseNode.SetMaxParallelism(maxParallelism)
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return &InputNode{
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BaseNode: baseNode,
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inStream: inStream,
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name: nodeName,
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}
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}
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