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enhance: Use stats Handler to record request/response size metrics (m…
…ilvus-io#36107) Related to milvus-io#36102 This PR use newly added `grpcSizeStatsHandler` to reduce calling `proto.Size` since the request & response size info is recorded by grpc framework. Signed-off-by: Congqi Xia <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| // Licensed to the LF AI & Data foundation under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you 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. | ||
|
|
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| package metrics | ||
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| import ( | ||
| "context" | ||
| "strconv" | ||
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|
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| "google.golang.org/grpc/stats" | ||
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| "github.com/milvus-io/milvus/pkg/util/typeutil" | ||
| ) | ||
|
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| // milvusGrpcKey is context key type. | ||
| type milvusGrpcKey struct{} | ||
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| // GrpcStats stores the meta and payload size info | ||
| // it should be attached to context so that request sizing could be avoided | ||
| type GrpcStats struct { | ||
| fullMethodName string | ||
| collectionName string | ||
| inboundPayloadSize int | ||
| inboundLabel string | ||
| nodeID int64 | ||
| } | ||
|
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| func (s *GrpcStats) SetCollectionName(collName string) *GrpcStats { | ||
| if s == nil { | ||
| return s | ||
| } | ||
| s.collectionName = collName | ||
| return s | ||
| } | ||
|
|
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| func (s *GrpcStats) SetInboundLabel(label string) *GrpcStats { | ||
| if s == nil { | ||
| return s | ||
| } | ||
| s.inboundLabel = label | ||
| return s | ||
| } | ||
|
|
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| func (s *GrpcStats) SetNodeID(nodeID int64) *GrpcStats { | ||
| if s == nil { | ||
| return s | ||
| } | ||
| s.nodeID = nodeID | ||
| return s | ||
| } | ||
|
|
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| func attachStats(ctx context.Context, stats *GrpcStats) context.Context { | ||
| return context.WithValue(ctx, milvusGrpcKey{}, stats) | ||
| } | ||
|
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| func GetStats(ctx context.Context) *GrpcStats { | ||
| stats, ok := ctx.Value(milvusGrpcKey{}).(*GrpcStats) | ||
| if !ok { | ||
| return nil | ||
| } | ||
|
|
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| return stats | ||
| } | ||
|
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| // grpcSizeStatsHandler implementing stats.Handler | ||
| // this handler process grpc request & response related metrics logic | ||
| type grpcSizeStatsHandler struct { | ||
| outboundMethods typeutil.Set[string] | ||
| targetMethods typeutil.Set[string] | ||
| } | ||
|
|
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| func NewGRPCSizeStatsHandler() *grpcSizeStatsHandler { | ||
| return &grpcSizeStatsHandler{ | ||
| targetMethods: make(typeutil.Set[string]), | ||
| outboundMethods: make(typeutil.Set[string]), | ||
| } | ||
| } | ||
|
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| func (h *grpcSizeStatsHandler) isTarget(method string) bool { | ||
| return h.targetMethods.Contain(method) | ||
| } | ||
|
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| func (h *grpcSizeStatsHandler) shouldRecordOutbound(method string) bool { | ||
| return h.outboundMethods.Contain(method) | ||
| } | ||
|
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| func (h *grpcSizeStatsHandler) WithTargetMethods(methods ...string) *grpcSizeStatsHandler { | ||
| h.targetMethods.Insert(methods...) | ||
| h.outboundMethods.Insert(methods...) | ||
| return h | ||
| } | ||
|
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| func (h *grpcSizeStatsHandler) WithInboundRecord(methods ...string) *grpcSizeStatsHandler { | ||
| h.targetMethods.Insert(methods...) | ||
| return h | ||
| } | ||
|
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| // TagConn exists to satisfy gRPC stats.Handler interface. | ||
| func (h *grpcSizeStatsHandler) TagConn(ctx context.Context, _ *stats.ConnTagInfo) context.Context { | ||
| return ctx | ||
| } | ||
|
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| // HandleConn exists to satisfy gRPC stats.Handler interface. | ||
| func (h *grpcSizeStatsHandler) HandleConn(_ context.Context, _ stats.ConnStats) {} | ||
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| func (h *grpcSizeStatsHandler) TagRPC(ctx context.Context, info *stats.RPCTagInfo) context.Context { | ||
| // if method is not target, just return origin ctx | ||
| if !h.isTarget(info.FullMethodName) { | ||
| return ctx | ||
| } | ||
| // attach stats | ||
| return attachStats(ctx, &GrpcStats{fullMethodName: info.FullMethodName}) | ||
| } | ||
|
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| // HandleRPC implements per-RPC stats instrumentation. | ||
| func (h *grpcSizeStatsHandler) HandleRPC(ctx context.Context, rs stats.RPCStats) { | ||
| mstats := GetStats(ctx) | ||
| // if no stats found, do nothing | ||
| if mstats == nil { | ||
| return | ||
| } | ||
|
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| switch rs := rs.(type) { | ||
| case *stats.InPayload: | ||
| // store inbound payload size in stats, collection name could be fetch in service after | ||
| mstats.inboundPayloadSize = rs.Length | ||
| case *stats.OutPayload: | ||
| // all info set | ||
| // set metrics with inbound size and related meta | ||
| nodeIDValue := strconv.FormatInt(mstats.nodeID, 10) | ||
| ProxyReceiveBytes.WithLabelValues( | ||
| nodeIDValue, | ||
| mstats.inboundLabel, mstats.collectionName).Add(float64(mstats.inboundPayloadSize)) | ||
| // set outbound payload size metrics for marked methods | ||
| if h.shouldRecordOutbound(mstats.fullMethodName) { | ||
| ProxyReadReqSendBytes.WithLabelValues(nodeIDValue).Add(float64(rs.Length)) | ||
| } | ||
| default: | ||
| } | ||
| } |