forked from buger/goreplay
/
elasticsearch.go
154 lines (135 loc) · 4.85 KB
/
elasticsearch.go
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package main
import (
"encoding/json"
"github.com/mattbaird/elastigo/lib"
"github.com/buger/gor/proto"
"log"
"regexp"
"time"
)
type ESUriErorr struct{}
func (e *ESUriErorr) Error() string {
return "Wrong ElasticSearch URL format. Expected to be: host:port/index_name"
}
type ESPlugin struct {
Active bool
ApiPort string
eConn *elastigo.Conn
Host string
Index string
indexor *elastigo.BulkIndexer
done chan bool
}
type ESRequestResponse struct {
ReqURL string `json:"Req_URL"`
ReqMethod string `json:"Req_Method"`
ReqUserAgent string `json:"Req_User-Agent"`
ReqAcceptLanguage string `json:"Req_Accept-Language,omitempty"`
ReqAccept string `json:"Req_Accept,omitempty"`
ReqAcceptEncoding string `json:"Req_Accept-Encoding,omitempty"`
ReqIfModifiedSince string `json:"Req_If-Modified-Since,omitempty"`
ReqConnection string `json:"Req_Connection,omitempty"`
ReqCookies string `json:"Req_Cookies,omitempty"`
RespStatus string `json:"Resp_Status"`
RespStatusCode string `json:"Resp_Status-Code"`
RespProto string `json:"Resp_Proto,omitempty"`
RespContentLength string `json:"Resp_Content-Length,omitempty"`
RespContentType string `json:"Resp_Content-Type,omitempty"`
RespTransferEncoding string `json:"Resp_Transfer-Encoding,omitempty"`
RespContentEncoding string `json:"Resp_Content-Encoding,omitempty"`
RespExpires string `json:"Resp_Expires,omitempty"`
RespCacheControl string `json:"Resp_Cache-Control,omitempty"`
RespVary string `json:"Resp_Vary,omitempty"`
RespSetCookie string `json:"Resp_Set-Cookie,omitempty"`
Rtt int64 `json:"RTT"`
Timestamp time.Time
}
// Parse ElasticSearch URI
//
// Proper format is: host:port/index_name
func parseURI(URI string) (err error, host string, port string, index string) {
rURI := regexp.MustCompile("(.+):([0-9]+)/(.+)")
match := rURI.FindAllStringSubmatch(URI, -1)
if len(match) == 0 {
err = new(ESUriErorr)
} else {
host = match[0][1]
port = match[0][2]
index = match[0][3]
}
return
}
func (p *ESPlugin) Init(URI string) {
var err error
err, p.Host, p.ApiPort, p.Index = parseURI(URI)
if err != nil {
log.Fatal("Can't initialize ElasticSearch plugin.", err)
}
p.eConn = elastigo.NewConn()
p.eConn.SetPort(p.ApiPort)
p.eConn.SetHosts([]string{p.Host})
p.indexor = p.eConn.NewBulkIndexerErrors(50, 60)
p.done = make(chan bool)
p.indexor.Start()
// Only start the ErrorHandler goroutine when in verbose mode
// no need to burn ressources otherwise
go p.ErrorHandler()
log.Println("Initialized Elasticsearch Plugin")
return
}
func (p *ESPlugin) IndexerShutdown() {
p.indexor.Stop()
return
}
func (p *ESPlugin) ErrorHandler() {
for {
errBuf := <-p.indexor.ErrorChannel
log.Println(errBuf.Err)
}
}
func (p *ESPlugin) RttDurationToMs(d time.Duration) int64 {
sec := d / time.Second
nsec := d % time.Second
fl := float64(sec) + float64(nsec)*1e-6
return int64(fl)
}
func (p *ESPlugin) ResponseAnalyze(req, resp []byte, start, stop time.Time) {
if len(resp) == 0 {
// nil http response - skipped elasticsearch export for this request
return
}
t := time.Now()
rtt := p.RttDurationToMs(stop.Sub(start))
req = payloadBody(req)
esResp := ESRequestResponse{
ReqURL: string(proto.Path(req)),
ReqMethod: string(proto.Method(req)),
ReqUserAgent: string(proto.Header(req, []byte("User-Agent"))),
ReqAcceptLanguage: string(proto.Header(req, []byte("Accept-Language"))),
ReqAccept: string(proto.Header(req, []byte("Accept"))),
ReqAcceptEncoding: string(proto.Header(req, []byte("Accept-Encoding"))),
ReqIfModifiedSince: string(proto.Header(req, []byte("If-Modified-Since"))),
ReqConnection: string(proto.Header(req, []byte("Connection"))),
ReqCookies: string(proto.Header(req, []byte("Cookie"))),
RespStatus: string(proto.Status(resp)),
RespStatusCode: string(proto.Status(resp)),
RespProto: string(proto.Method(resp)),
RespContentLength: string(proto.Header(resp, []byte("Content-Length"))),
RespContentType: string(proto.Header(resp, []byte("Content-Type"))),
RespTransferEncoding: string(proto.Header(resp, []byte("Transfer-Encoding"))),
RespContentEncoding: string(proto.Header(resp, []byte("Content-Encoding"))),
RespExpires: string(proto.Header(resp, []byte("Expires"))),
RespCacheControl: string(proto.Header(resp, []byte("Cache-Control"))),
RespVary: string(proto.Header(resp, []byte("Vary"))),
RespSetCookie: string(proto.Header(resp, []byte("Set-Cookie"))),
Rtt: rtt,
Timestamp: t,
}
j, err := json.Marshal(&esResp)
if err != nil {
log.Println(err)
} else {
p.indexor.Index(p.Index, "RequestResponse", "", "", "", &t, j)
}
return
}