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task.go
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task.go
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/*
Copyright 2021 Loggie Authors
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 file
import (
"os"
"regexp"
"strings"
"sync"
"time"
"github.com/loggie-io/loggie/pkg/core/api"
"github.com/loggie-io/loggie/pkg/core/event"
"github.com/loggie-io/loggie/pkg/core/log"
"github.com/loggie-io/loggie/pkg/pipeline"
)
const (
START = WatchTaskType("start")
STOP = WatchTaskType("stop")
)
type WatchTaskType string
type WatchTaskEvent struct {
watchTaskType WatchTaskType
watchTask *WatchTask
}
type WatchTask struct {
epoch *pipeline.Epoch
pipelineName string
sourceName string
config CollectConfig
eventPool *event.Pool
productFunc api.ProductFunc
activeChan chan *Job
countDown *sync.WaitGroup
waiteForStopJobs map[string]*Job
stopTime time.Time
sourceFields map[string]interface{}
}
func NewWatchTask(epoch *pipeline.Epoch, pipelineName string, sourceName string, config CollectConfig,
eventPool *event.Pool, productFunc api.ProductFunc, activeChan chan *Job, sourceFields map[string]interface{}) *WatchTask {
w := &WatchTask{
epoch: epoch,
pipelineName: pipelineName,
sourceName: sourceName,
config: config,
eventPool: eventPool,
productFunc: productFunc,
activeChan: activeChan,
countDown: &sync.WaitGroup{},
sourceFields: sourceFields,
}
// init excludeFilePatterns
l := len(w.config.ExcludeFiles)
if l > 0 {
excludeFilePatterns := make([]*regexp.Regexp, l)
for i, excludeFile := range w.config.ExcludeFiles {
pattern, err := regexp.Compile(excludeFile)
if err != nil {
log.Error("compile exclude file pattern(%s) fail: %v", excludeFile, err)
continue
}
excludeFilePatterns[i] = pattern
}
w.config.excludeFilePatterns = excludeFilePatterns
}
// init glob path support recursive
w.config.Paths = getRecursivePath(w.config.Paths)
return w
}
func getRecursivePath(paths []string) []string {
var pathRec []string
for _, path := range paths {
if strings.HasSuffix(path, "**") {
path = path + "/*"
}
if strings.HasSuffix(path, "**/") {
path = path + "*"
}
pathRec = append(pathRec, path)
}
return pathRec
}
func (wt *WatchTask) newJob(filename string, info os.FileInfo) *Job {
return NewJob(wt, filename, info)
}
func (wt *WatchTask) WatchTaskKey() string {
var watchTaskKey strings.Builder
watchTaskKey.WriteString(wt.pipelineName)
watchTaskKey.WriteString(":")
watchTaskKey.WriteString(wt.sourceName)
return watchTaskKey.String()
}
func (wt *WatchTask) isParentOf(job *Job) bool {
return job.task.pipelineName == wt.pipelineName && job.task.sourceName == wt.sourceName
}
func (wt *WatchTask) String() string {
var watchTaskString strings.Builder
watchTaskString.WriteString(wt.epoch.String())
watchTaskString.WriteString(":")
watchTaskString.WriteString(wt.sourceName)
return watchTaskString.String()
}
func (wt *WatchTask) StopJobsInfo() string {
if len(wt.waiteForStopJobs) <= 0 {
return ""
}
var stopJobsInfo strings.Builder
for _, job := range wt.waiteForStopJobs {
stopJobsInfo.WriteString("{")
stopJobsInfo.WriteString(job.WatchUid())
stopJobsInfo.WriteString(":")
stopJobsInfo.WriteString(job.filename)
stopJobsInfo.WriteString("}")
}
return stopJobsInfo.String()
}
func (wt *WatchTask) IsStop() bool {
return !wt.stopTime.IsZero()
}