| // Licensed to Apache Software Foundation (ASF) under one or more contributor |
| // license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright |
| // ownership. Apache Software Foundation (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. |
| |
| package query |
| |
| import ( |
| "context" |
| "time" |
| |
| "github.com/apache/skywalking-banyandb/api/common" |
| "github.com/apache/skywalking-banyandb/api/event" |
| v1 "github.com/apache/skywalking-banyandb/api/proto/banyandb/v1" |
| apischema "github.com/apache/skywalking-banyandb/api/schema" |
| "github.com/apache/skywalking-banyandb/banyand/discovery" |
| "github.com/apache/skywalking-banyandb/banyand/index" |
| "github.com/apache/skywalking-banyandb/banyand/series" |
| "github.com/apache/skywalking-banyandb/pkg/bus" |
| "github.com/apache/skywalking-banyandb/pkg/logger" |
| "github.com/apache/skywalking-banyandb/pkg/query/executor" |
| "github.com/apache/skywalking-banyandb/pkg/query/logical" |
| ) |
| |
| const ( |
| moduleName = "query-processor" |
| ) |
| |
| var ( |
| _ Executor = (*queryProcessor)(nil) |
| _ bus.MessageListener = (*queryProcessor)(nil) |
| _ executor.ExecutionContext = (*queryProcessor)(nil) |
| ) |
| |
| type queryProcessor struct { |
| index.Repo |
| series.UniModel |
| logger *logger.Logger |
| schemaRepo series.SchemaRepo |
| log *logger.Logger |
| serviceRepo discovery.ServiceRepo |
| } |
| |
| func (q *queryProcessor) Rev(message bus.Message) (resp bus.Message) { |
| queryCriteria, ok := message.Data().(*v1.QueryRequest) |
| if !ok { |
| q.log.Warn().Msg("invalid event data type") |
| return |
| } |
| q.log.Info(). |
| Msg("received a query event") |
| analyzer := logical.DefaultAnalyzer() |
| metadata := &common.Metadata{ |
| KindVersion: apischema.SeriesKindVersion, |
| Spec: queryCriteria.GetMetadata(), |
| } |
| s, err := analyzer.BuildTraceSchema(context.TODO(), *metadata) |
| if err != nil { |
| q.logger.Error().Err(err).Msg("fail to build trace schema") |
| return |
| } |
| |
| p, err := analyzer.Analyze(context.TODO(), queryCriteria, metadata, s) |
| if err != nil { |
| q.logger.Error().Err(err).Msg("fail to analyze the query request") |
| return |
| } |
| |
| entities, err := p.Execute(q) |
| if err != nil { |
| q.logger.Error().Err(err).Msg("fail to execute the query plan") |
| return |
| } |
| |
| now := time.Now().UnixNano() |
| resp = bus.NewMessage(bus.MessageID(now), entities) |
| |
| return |
| } |
| |
| func (q *queryProcessor) Name() string { |
| return moduleName |
| } |
| |
| func (q *queryProcessor) PreRun() error { |
| q.log = logger.GetLogger(moduleName) |
| return q.serviceRepo.Subscribe(event.TopicQueryEvent, q) |
| } |