97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
package reader
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"log"
|
|
|
|
"github.com/influxdata/telegraf"
|
|
"github.com/influxdata/telegraf/internal/globpath"
|
|
"github.com/influxdata/telegraf/plugins/inputs"
|
|
"github.com/influxdata/telegraf/plugins/parsers"
|
|
)
|
|
|
|
type Reader struct {
|
|
Filepaths []string `toml:"files"`
|
|
FromBeginning bool
|
|
parser parsers.Parser
|
|
|
|
Filenames []string
|
|
}
|
|
|
|
const sampleConfig = `## Files to parse.
|
|
## These accept standard unix glob matching rules, but with the addition of
|
|
## ** as a "super asterisk". ie:
|
|
## /var/log/**.log -> recursively find all .log files in /var/log
|
|
## /var/log/*/*.log -> find all .log files with a parent dir in /var/log
|
|
## /var/log/apache.log -> only tail the apache log file
|
|
files = ["/var/log/apache/access.log"]
|
|
|
|
## The dataformat to be read from files
|
|
## Each data format has its own unique set of configuration options, read
|
|
## more about them here:
|
|
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
|
|
data_format = ""
|
|
`
|
|
|
|
// SampleConfig returns the default configuration of the Input
|
|
func (r *Reader) SampleConfig() string {
|
|
return sampleConfig
|
|
}
|
|
|
|
func (r *Reader) Description() string {
|
|
return "reload and gather from file[s] on telegraf's interval"
|
|
}
|
|
|
|
func (r *Reader) Gather(acc telegraf.Accumulator) error {
|
|
r.refreshFilePaths()
|
|
for _, k := range r.Filenames {
|
|
metrics, err := r.readMetric(k)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, m := range metrics {
|
|
acc.AddFields(m.Name(), m.Fields(), m.Tags())
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *Reader) SetParser(p parsers.Parser) {
|
|
r.parser = p
|
|
}
|
|
|
|
func (r *Reader) refreshFilePaths() {
|
|
var allFiles []string
|
|
for _, filepath := range r.Filepaths {
|
|
g, err := globpath.Compile(filepath)
|
|
if err != nil {
|
|
log.Printf("E! Error Glob %s failed to compile, %s", filepath, err)
|
|
continue
|
|
}
|
|
files := g.Match()
|
|
|
|
for k := range files {
|
|
allFiles = append(allFiles, k)
|
|
}
|
|
}
|
|
|
|
r.Filenames = allFiles
|
|
}
|
|
|
|
//requires that Parser has been compiled
|
|
func (r *Reader) readMetric(filename string) ([]telegraf.Metric, error) {
|
|
fileContents, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
log.Printf("E! File could not be opened: %v", filename)
|
|
}
|
|
return r.parser.Parse(fileContents)
|
|
|
|
}
|
|
|
|
func init() {
|
|
inputs.Add("reader", func() telegraf.Input {
|
|
return &Reader{}
|
|
})
|
|
}
|