/usr/share/gocode/src/github.com/influxdb/influxdb/services/opentsdb/service.go is in golang-github-influxdb-influxdb-dev 0.10.0+dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 | package opentsdb
import (
"bufio"
"bytes"
"crypto/tls"
"expvar"
"io"
"log"
"net"
"net/http"
"net/textproto"
"os"
"strconv"
"strings"
"sync"
"time"
"github.com/influxdb/influxdb"
"github.com/influxdb/influxdb/cluster"
"github.com/influxdb/influxdb/models"
"github.com/influxdb/influxdb/services/meta"
"github.com/influxdb/influxdb/tsdb"
)
const leaderWaitTimeout = 30 * time.Second
// statistics gathered by the openTSDB package.
const (
statHTTPConnectionsHandled = "httpConnsHandled"
statTelnetConnectionsActive = "tlConnsActive"
statTelnetConnectionsHandled = "tlConnsHandled"
statTelnetPointsReceived = "tlPointsRx"
statTelnetBytesReceived = "tlBytesRx"
statTelnetReadError = "tlReadErr"
statTelnetBadLine = "tlBadLine"
statTelnetBadTime = "tlBadTime"
statTelnetBadTag = "tlBadTag"
statTelnetBadFloat = "tlBadFloat"
statBatchesTrasmitted = "batchesTx"
statPointsTransmitted = "pointsTx"
statBatchesTransmitFail = "batchesTxFail"
statConnectionsActive = "connsActive"
statConnectionsHandled = "connsHandled"
statDroppedPointsInvalid = "droppedPointsInvalid"
)
// Service manages the listener and handler for an HTTP endpoint.
type Service struct {
ln net.Listener // main listener
httpln *chanListener // http channel-based listener
mu sync.Mutex
wg sync.WaitGroup
done chan struct{}
err chan error
tls bool
cert string
BindAddress string
Database string
RetentionPolicy string
ConsistencyLevel cluster.ConsistencyLevel
PointsWriter interface {
WritePoints(p *cluster.WritePointsRequest) error
}
MetaClient interface {
CreateDatabase(name string) (*meta.DatabaseInfo, error)
}
// Points received over the telnet protocol are batched.
batchSize int
batchPending int
batchTimeout time.Duration
batcher *tsdb.PointBatcher
LogPointErrors bool
Logger *log.Logger
statMap *expvar.Map
}
// NewService returns a new instance of Service.
func NewService(c Config) (*Service, error) {
consistencyLevel, err := cluster.ParseConsistencyLevel(c.ConsistencyLevel)
if err != nil {
return nil, err
}
s := &Service{
done: make(chan struct{}),
tls: c.TLSEnabled,
cert: c.Certificate,
err: make(chan error),
BindAddress: c.BindAddress,
Database: c.Database,
RetentionPolicy: c.RetentionPolicy,
ConsistencyLevel: consistencyLevel,
batchSize: c.BatchSize,
batchPending: c.BatchPending,
batchTimeout: time.Duration(c.BatchTimeout),
Logger: log.New(os.Stderr, "[opentsdb] ", log.LstdFlags),
LogPointErrors: c.LogPointErrors,
}
return s, nil
}
// Open starts the service
func (s *Service) Open() error {
s.mu.Lock()
defer s.mu.Unlock()
s.Logger.Println("Starting OpenTSDB service")
// Configure expvar monitoring. It's OK to do this even if the service fails to open and
// should be done before any data could arrive for the service.
key := strings.Join([]string{"opentsdb", s.BindAddress}, ":")
tags := map[string]string{"bind": s.BindAddress}
s.statMap = influxdb.NewStatistics(key, "opentsdb", tags)
if _, err := s.MetaClient.CreateDatabase(s.Database); err != nil {
s.Logger.Printf("Failed to ensure target database %s exists: %s", s.Database, err.Error())
return err
}
s.batcher = tsdb.NewPointBatcher(s.batchSize, s.batchPending, s.batchTimeout)
s.batcher.Start()
// Start processing batches.
s.wg.Add(1)
go s.processBatches(s.batcher)
// Open listener.
if s.tls {
cert, err := tls.LoadX509KeyPair(s.cert, s.cert)
if err != nil {
return err
}
listener, err := tls.Listen("tcp", s.BindAddress, &tls.Config{
Certificates: []tls.Certificate{cert},
})
if err != nil {
return err
}
s.Logger.Println("Listening on TLS:", listener.Addr().String())
s.ln = listener
} else {
listener, err := net.Listen("tcp", s.BindAddress)
if err != nil {
return err
}
s.Logger.Println("Listening on:", listener.Addr().String())
s.ln = listener
}
s.httpln = newChanListener(s.ln.Addr())
// Begin listening for connections.
s.wg.Add(2)
go s.serveHTTP()
go s.serve()
return nil
}
// Close closes the openTSDB service
func (s *Service) Close() error {
s.mu.Lock()
defer s.mu.Unlock()
if s.ln != nil {
return s.ln.Close()
}
if s.batcher != nil {
s.batcher.Stop()
}
close(s.done)
s.wg.Wait()
return nil
}
// SetLogger sets the internal logger to the logger passed in.
func (s *Service) SetLogger(l *log.Logger) { s.Logger = l }
// Err returns a channel for fatal errors that occur on the listener.
func (s *Service) Err() <-chan error { return s.err }
// Addr returns the listener's address. Returns nil if listener is closed.
func (s *Service) Addr() net.Addr {
if s.ln == nil {
return nil
}
return s.ln.Addr()
}
// serve serves the handler from the listener.
func (s *Service) serve() {
defer s.wg.Done()
for {
// Wait for next connection.
conn, err := s.ln.Accept()
if opErr, ok := err.(*net.OpError); ok && !opErr.Temporary() {
s.Logger.Println("openTSDB TCP listener closed")
return
} else if err != nil {
s.Logger.Println("error accepting openTSDB: ", err.Error())
continue
}
// Handle connection in separate goroutine.
go s.handleConn(conn)
}
}
// handleConn processes conn. This is run in a separate goroutine.
func (s *Service) handleConn(conn net.Conn) {
defer s.statMap.Add(statConnectionsActive, -1)
s.statMap.Add(statConnectionsActive, 1)
s.statMap.Add(statConnectionsHandled, 1)
// Read header into buffer to check if it's HTTP.
var buf bytes.Buffer
r := bufio.NewReader(io.TeeReader(conn, &buf))
// Attempt to parse connection as HTTP.
_, err := http.ReadRequest(r)
// Rebuild connection from buffer and remaining connection data.
bufr := bufio.NewReader(io.MultiReader(&buf, conn))
conn = &readerConn{Conn: conn, r: bufr}
// If no HTTP parsing error occurred then process as HTTP.
if err == nil {
s.statMap.Add(statHTTPConnectionsHandled, 1)
s.httpln.ch <- conn
return
}
// Otherwise handle in telnet format.
s.wg.Add(1)
s.handleTelnetConn(conn)
}
// handleTelnetConn accepts OpenTSDB's telnet protocol.
// Each telnet command consists of a line of the form:
// put sys.cpu.user 1356998400 42.5 host=webserver01 cpu=0
func (s *Service) handleTelnetConn(conn net.Conn) {
defer conn.Close()
defer s.wg.Done()
defer s.statMap.Add(statTelnetConnectionsActive, -1)
s.statMap.Add(statTelnetConnectionsActive, 1)
s.statMap.Add(statTelnetConnectionsHandled, 1)
// Get connection details.
remoteAddr := conn.RemoteAddr().String()
// Wrap connection in a text protocol reader.
r := textproto.NewReader(bufio.NewReader(conn))
for {
line, err := r.ReadLine()
if err != nil {
if err != io.EOF {
s.statMap.Add(statTelnetReadError, 1)
s.Logger.Println("error reading from openTSDB connection", err.Error())
}
return
}
s.statMap.Add(statTelnetPointsReceived, 1)
s.statMap.Add(statTelnetBytesReceived, int64(len(line)))
inputStrs := strings.Fields(line)
if len(inputStrs) == 1 && inputStrs[0] == "version" {
conn.Write([]byte("InfluxDB TSDB proxy"))
continue
}
if len(inputStrs) < 4 || inputStrs[0] != "put" {
s.statMap.Add(statTelnetBadLine, 1)
if s.LogPointErrors {
s.Logger.Printf("malformed line '%s' from %s", line, remoteAddr)
}
continue
}
measurement := inputStrs[1]
tsStr := inputStrs[2]
valueStr := inputStrs[3]
tagStrs := inputStrs[4:]
var t time.Time
ts, err := strconv.ParseInt(tsStr, 10, 64)
if err != nil {
s.statMap.Add(statTelnetBadTime, 1)
if s.LogPointErrors {
s.Logger.Printf("malformed time '%s' from %s", tsStr, remoteAddr)
}
}
switch len(tsStr) {
case 10:
t = time.Unix(ts, 0)
break
case 13:
t = time.Unix(ts/1000, (ts%1000)*1000)
break
default:
s.statMap.Add(statTelnetBadTime, 1)
if s.LogPointErrors {
s.Logger.Printf("bad time '%s' must be 10 or 13 chars, from %s ", tsStr, remoteAddr)
}
continue
}
tags := make(map[string]string)
for t := range tagStrs {
parts := strings.SplitN(tagStrs[t], "=", 2)
if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
s.statMap.Add(statTelnetBadTag, 1)
if s.LogPointErrors {
s.Logger.Printf("malformed tag data '%v' from %s", tagStrs[t], remoteAddr)
}
continue
}
k := parts[0]
tags[k] = parts[1]
}
fields := make(map[string]interface{})
fv, err := strconv.ParseFloat(valueStr, 64)
if err != nil {
s.statMap.Add(statTelnetBadFloat, 1)
if s.LogPointErrors {
s.Logger.Printf("bad float '%s' from %s", valueStr, remoteAddr)
}
continue
}
fields["value"] = fv
pt, err := models.NewPoint(measurement, tags, fields, t)
if err != nil {
s.statMap.Add(statTelnetBadFloat, 1)
if s.LogPointErrors {
s.Logger.Printf("bad float '%s' from %s", valueStr, remoteAddr)
}
continue
}
s.batcher.In() <- pt
}
}
// serveHTTP handles connections in HTTP format.
func (s *Service) serveHTTP() {
srv := &http.Server{Handler: &Handler{
Database: s.Database,
RetentionPolicy: s.RetentionPolicy,
ConsistencyLevel: s.ConsistencyLevel,
PointsWriter: s.PointsWriter,
Logger: s.Logger,
statMap: s.statMap,
}}
srv.Serve(s.httpln)
}
// processBatches continually drains the given batcher and writes the batches to the database.
func (s *Service) processBatches(batcher *tsdb.PointBatcher) {
defer s.wg.Done()
for {
select {
case batch := <-batcher.Out():
if err := s.PointsWriter.WritePoints(&cluster.WritePointsRequest{
Database: s.Database,
RetentionPolicy: s.RetentionPolicy,
ConsistencyLevel: s.ConsistencyLevel,
Points: batch,
}); err == nil {
s.statMap.Add(statBatchesTrasmitted, 1)
s.statMap.Add(statPointsTransmitted, int64(len(batch)))
} else {
s.Logger.Printf("failed to write point batch to database %q: %s", s.Database, err)
s.statMap.Add(statBatchesTransmitFail, 1)
}
case <-s.done:
return
}
}
}
|