| /* |
| * Licensed to the 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. 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. |
| */ |
| |
| package test |
| |
| import ( |
| "fmt" |
| "math/rand" |
| "org/apache/htrace/common" |
| ) |
| |
| func NonZeroRand64(rnd *rand.Rand) int64 { |
| for { |
| r := rnd.Int63() |
| if r == 0 { |
| continue |
| } |
| if rnd.Intn(1) != 0 { |
| return -r |
| } |
| return r |
| } |
| } |
| |
| func NonZeroRandSpanId(rnd *rand.Rand) common.SpanId { |
| var id common.SpanId |
| id = make([]byte, 16) |
| for i := 0; i < len(id); i++ { |
| id[i] = byte(rnd.Intn(0x100)) |
| } |
| return id |
| } |
| |
| func NonZeroRand32(rnd *rand.Rand) int32 { |
| for { |
| r := rnd.Int31() |
| if r == 0 { |
| continue |
| } |
| if rnd.Intn(1) != 0 { |
| return -r |
| } |
| return r |
| } |
| } |
| |
| // Create a random span. |
| func NewRandomSpan(rnd *rand.Rand, potentialParents []*common.Span) *common.Span { |
| parents := []common.SpanId{} |
| if potentialParents != nil { |
| parentIdx := rnd.Intn(len(potentialParents) + 1) |
| if parentIdx < len(potentialParents) { |
| parents = []common.SpanId{potentialParents[parentIdx].Id} |
| } |
| } |
| return &common.Span{Id: NonZeroRandSpanId(rnd), |
| SpanData: common.SpanData{ |
| Begin: NonZeroRand64(rnd), |
| End: NonZeroRand64(rnd), |
| Description: "getFileDescriptors", |
| Parents: parents, |
| TracerId: fmt.Sprintf("tracer%d", NonZeroRand32(rnd)), |
| }} |
| } |