mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-15 16:30:55 +01:00
817 lines
24 KiB
Go
817 lines
24 KiB
Go
package transport
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import (
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"flag"
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"fmt"
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"io"
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"net"
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"sync"
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"sync/atomic"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/consts"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/handshake"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
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"github.com/VictoriaMetrics/metrics"
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)
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var (
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maxTagKeysPerSearch = flag.Int("search.maxTagKeys", 10e3, "The maximum number of tag keys returned per search")
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maxTagValuesPerSearch = flag.Int("search.maxTagValues", 10e3, "The maximum number of tag values returned per search")
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maxMetricsPerSearch = flag.Int("search.maxUniqueTimeseries", 100e3, "The maximum number of unique time series each search can scan")
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precisionBits = flag.Int("precisionBits", 64, "The number of precision bits to store per each value. Lower precision bits improves data compression at the cost of precision loss")
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disableRPCCompression = flag.Bool(`rpc.disableCompression`, false, "Disable compression of RPC traffic. This reduces CPU usage at the cost of higher network bandwidth usage")
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)
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// Server processes connections from vminsert and vmselect.
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type Server struct {
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storage *storage.Storage
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vminsertLN net.Listener
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vmselectLN net.Listener
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vminsertWG sync.WaitGroup
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vmselectWG sync.WaitGroup
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vminsertConnsMap connsMap
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vmselectConnsMap connsMap
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stopFlag uint64
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}
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type connsMap struct {
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mu sync.Mutex
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m map[net.Conn]struct{}
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}
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func (cm *connsMap) Init() {
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cm.m = make(map[net.Conn]struct{})
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}
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func (cm *connsMap) Add(c net.Conn) {
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cm.mu.Lock()
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cm.m[c] = struct{}{}
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cm.mu.Unlock()
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}
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func (cm *connsMap) Delete(c net.Conn) {
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cm.mu.Lock()
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delete(cm.m, c)
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cm.mu.Unlock()
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}
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func (cm *connsMap) CloseAll() {
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cm.mu.Lock()
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for c := range cm.m {
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_ = c.Close()
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}
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cm.mu.Unlock()
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}
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// NewServer returns new Server.
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func NewServer(vminsertAddr, vmselectAddr string, storage *storage.Storage) (*Server, error) {
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vminsertLN, err := netutil.NewTCPListener("vminsert", vminsertAddr)
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if err != nil {
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return nil, fmt.Errorf("unable to listen vminsertAddr %s: %s", vminsertAddr, err)
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}
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vmselectLN, err := netutil.NewTCPListener("vmselect", vmselectAddr)
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if err != nil {
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return nil, fmt.Errorf("unable to listen vmselectAddr %s: %s", vmselectAddr, err)
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}
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if err := encoding.CheckPrecisionBits(uint8(*precisionBits)); err != nil {
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return nil, fmt.Errorf("invalid -precisionBits: %s", err)
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}
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// Set network-level write timeouts to reasonable values in order to protect
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// from broken networks.
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// Do not set read timeouts, since they are managed separately -
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// search for SetReadDeadline in this file.
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vminsertLN.WriteTimeout = time.Minute
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vmselectLN.WriteTimeout = time.Minute
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s := &Server{
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storage: storage,
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vminsertLN: vminsertLN,
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vmselectLN: vmselectLN,
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}
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s.vminsertConnsMap.Init()
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s.vmselectConnsMap.Init()
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return s, nil
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}
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// RunVMInsert runs a server accepting connections from vminsert.
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func (s *Server) RunVMInsert() {
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logger.Infof("accepting vminsert conns at %s", s.vminsertLN.Addr())
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for {
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c, err := s.vminsertLN.Accept()
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if err != nil {
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if pe, ok := err.(net.Error); ok && pe.Temporary() {
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continue
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}
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if s.isStopping() {
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return
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}
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logger.Panicf("FATAL: cannot process vminsert conns at %s: %s", s.vminsertLN.Addr(), err)
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}
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logger.Infof("accepted vminsert conn from %s", c.RemoteAddr())
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vminsertConns.Inc()
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s.vminsertConnsMap.Add(c)
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s.vminsertWG.Add(1)
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go func() {
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defer func() {
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s.vminsertConnsMap.Delete(c)
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vminsertConns.Dec()
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s.vminsertWG.Done()
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}()
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// There is no need in response compression, since
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// vmstorage doesn't send anything back to vminsert.
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compressionLevel := 0
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bc, err := handshake.VMInsertServer(c, compressionLevel)
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if err != nil {
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if s.isStopping() {
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// c is stopped inside Server.MustClose
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return
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}
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logger.Errorf("cannot perform vminsert handshake with client %q: %s", c.RemoteAddr(), err)
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_ = c.Close()
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return
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}
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defer func() {
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if !s.isStopping() {
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logger.Infof("closing vminsert conn from %s", c.RemoteAddr())
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}
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_ = bc.Close()
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}()
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logger.Infof("processing vminsert conn from %s", c.RemoteAddr())
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if err := s.processVMInsertConn(bc); err != nil {
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if s.isStopping() {
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return
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}
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vminsertConnErrors.Inc()
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logger.Errorf("cannot process vminsert conn from %s: %s", c.RemoteAddr(), err)
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}
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}()
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}
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}
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var (
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vminsertConns = metrics.NewCounter("vm_vminsert_conns")
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vminsertConnErrors = metrics.NewCounter("vm_vminsert_conn_errors_total")
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)
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// RunVMSelect runs a server accepting connections from vmselect.
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func (s *Server) RunVMSelect() {
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logger.Infof("accepting vmselect conns at %s", s.vmselectLN.Addr())
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for {
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c, err := s.vmselectLN.Accept()
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if err != nil {
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if pe, ok := err.(net.Error); ok && pe.Temporary() {
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continue
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}
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if s.isStopping() {
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return
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}
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logger.Panicf("FATAL: cannot process vmselect conns at %s: %s", s.vmselectLN.Addr(), err)
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}
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logger.Infof("accepted vmselect conn from %s", c.RemoteAddr())
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vmselectConns.Inc()
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s.vmselectConnsMap.Add(c)
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s.vmselectWG.Add(1)
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go func() {
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defer func() {
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s.vmselectConnsMap.Delete(c)
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vmselectConns.Dec()
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s.vmselectWG.Done()
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}()
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// Compress responses to vmselect even if they already contain compressed blocks.
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// Responses contain uncompressed metric names, which should compress well
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// when the response contains high number of time series.
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// Additionally, recently added metric blocks are usually uncompressed, so the compression
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// should save network bandwidth.
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compressionLevel := 1
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if *disableRPCCompression {
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compressionLevel = 0
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}
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bc, err := handshake.VMSelectServer(c, compressionLevel)
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if err != nil {
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if s.isStopping() {
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// c is closed inside Server.MustClose
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return
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}
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logger.Errorf("cannot perform vmselect handshake with client %q: %s", c.RemoteAddr(), err)
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_ = c.Close()
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return
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}
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defer func() {
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if !s.isStopping() {
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logger.Infof("closing vmselect conn from %s", c.RemoteAddr())
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}
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_ = bc.Close()
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}()
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logger.Infof("processing vmselect conn from %s", c.RemoteAddr())
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if err := s.processVMSelectConn(bc); err != nil {
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if s.isStopping() {
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return
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}
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vmselectConnErrors.Inc()
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logger.Errorf("cannot process vmselect conn %s: %s", c.RemoteAddr(), err)
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}
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}()
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}
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}
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var (
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vmselectConns = metrics.NewCounter("vm_vmselect_conns")
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vmselectConnErrors = metrics.NewCounter("vm_vmselect_conn_errors_total")
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)
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// MustClose gracefully closes the server,
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// so it no longer touches s.storage after returning.
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func (s *Server) MustClose() {
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// Mark the server as stoping.
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s.setIsStopping()
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// Stop accepting new connections from vminsert and vmselect.
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if err := s.vminsertLN.Close(); err != nil {
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logger.Panicf("FATAL: cannot close vminsert listener: %s", err)
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}
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if err := s.vmselectLN.Close(); err != nil {
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logger.Panicf("FATAL: cannot close vmselect listener: %s", err)
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}
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// Close existing connections from vminsert, so the goroutines
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// processing these connections are finished.
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s.vminsertConnsMap.CloseAll()
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// Close existing connections from vmselect, so the goroutines
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// processing these connections are finished.
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s.vmselectConnsMap.CloseAll()
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// Wait until all the goroutines processing vminsert and vmselect conns
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// are finished.
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s.vminsertWG.Wait()
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s.vmselectWG.Wait()
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}
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func (s *Server) setIsStopping() {
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atomic.StoreUint64(&s.stopFlag, 1)
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}
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func (s *Server) isStopping() bool {
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return atomic.LoadUint64(&s.stopFlag) != 0
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}
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func (s *Server) processVMInsertConn(r io.Reader) error {
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sizeBuf := make([]byte, 8)
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var buf []byte
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var mrs []storage.MetricRow
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for {
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if _, err := io.ReadFull(r, sizeBuf); err != nil {
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if err == io.EOF {
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// Remote end gracefully closed the connection.
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return nil
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}
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return fmt.Errorf("cannot read packet size: %s", err)
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}
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packetSize := encoding.UnmarshalUint64(sizeBuf)
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if packetSize > consts.MaxInsertPacketSize {
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return fmt.Errorf("too big packet size: %d; shouldn't exceed %d", packetSize, consts.MaxInsertPacketSize)
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}
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buf = bytesutil.Resize(buf, int(packetSize))
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if _, err := io.ReadFull(r, buf); err != nil {
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return fmt.Errorf("cannot read packet with size %d: %s", packetSize, err)
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}
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vminsertPacketsRead.Inc()
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// Read metric rows from the packet.
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mrs = mrs[:0]
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tail := buf
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for len(tail) > 0 {
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if len(mrs) < cap(mrs) {
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mrs = mrs[:len(mrs)+1]
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} else {
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mrs = append(mrs, storage.MetricRow{})
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}
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mr := &mrs[len(mrs)-1]
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var err error
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tail, err = mr.Unmarshal(tail)
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if err != nil {
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return fmt.Errorf("cannot unmarshal MetricRow: %s", err)
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}
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}
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vminsertMetricsRead.Add(len(mrs))
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if err := s.storage.AddRows(mrs, uint8(*precisionBits)); err != nil {
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return fmt.Errorf("cannot store metrics: %s", err)
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}
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}
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}
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var (
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vminsertPacketsRead = metrics.NewCounter("vm_vminsert_packets_read_total")
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vminsertMetricsRead = metrics.NewCounter("vm_vminsert_metrics_read_total")
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)
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func (s *Server) processVMSelectConn(bc *handshake.BufferedConn) error {
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ctx := &vmselectRequestCtx{
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bc: bc,
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sizeBuf: make([]byte, 8),
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}
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for {
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err := s.processVMSelectRequest(ctx)
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n := atomic.LoadUint64(&ctx.sr.MissingMetricNamesForMetricID)
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missingMetricNamesForMetricID.Add(int(n))
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if err != nil {
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if err == io.EOF {
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// Remote client gracefully closed the connection.
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return nil
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}
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return fmt.Errorf("cannot process vmselect request: %s", err)
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}
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if err := bc.Flush(); err != nil {
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return fmt.Errorf("cannot flush compressed buffers: %s", err)
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}
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}
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}
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var missingMetricNamesForMetricID = metrics.NewCounter(`vm_missing_metric_names_for_metric_id_total`)
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type vmselectRequestCtx struct {
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bc *handshake.BufferedConn
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sizeBuf []byte
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dataBuf []byte
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sq storage.SearchQuery
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tfss []*storage.TagFilters
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sr storage.Search
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}
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func (ctx *vmselectRequestCtx) readUint32() (uint32, error) {
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ctx.sizeBuf = bytesutil.Resize(ctx.sizeBuf, 4)
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if _, err := io.ReadFull(ctx.bc, ctx.sizeBuf); err != nil {
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if err == io.EOF {
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return 0, err
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}
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return 0, fmt.Errorf("cannot read uint32: %s", err)
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}
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n := encoding.UnmarshalUint32(ctx.sizeBuf)
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return n, nil
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}
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func (ctx *vmselectRequestCtx) readDataBufBytes(maxDataSize int) error {
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ctx.sizeBuf = bytesutil.Resize(ctx.sizeBuf, 8)
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if _, err := io.ReadFull(ctx.bc, ctx.sizeBuf); err != nil {
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if err == io.EOF {
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return err
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}
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return fmt.Errorf("cannot read data size: %s", err)
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}
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dataSize := encoding.UnmarshalUint64(ctx.sizeBuf)
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if dataSize > uint64(maxDataSize) {
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return fmt.Errorf("too big data size: %d; it mustn't exceed %d bytes", dataSize, maxDataSize)
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}
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ctx.dataBuf = bytesutil.Resize(ctx.dataBuf, int(dataSize))
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if dataSize == 0 {
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return nil
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}
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if _, err := io.ReadFull(ctx.bc, ctx.dataBuf); err != nil {
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return fmt.Errorf("cannot read data with size %d: %s", dataSize, err)
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}
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return nil
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}
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func (ctx *vmselectRequestCtx) readBool() (bool, error) {
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ctx.dataBuf = bytesutil.Resize(ctx.dataBuf, 1)
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if _, err := io.ReadFull(ctx.bc, ctx.dataBuf); err != nil {
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if err == io.EOF {
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return false, err
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}
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return false, fmt.Errorf("cannot read bool: %s", err)
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}
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v := ctx.dataBuf[0] != 0
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return v, nil
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}
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func (ctx *vmselectRequestCtx) writeDataBufBytes() error {
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if err := ctx.writeUint64(uint64(len(ctx.dataBuf))); err != nil {
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return fmt.Errorf("cannot write data size: %s", err)
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}
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if len(ctx.dataBuf) == 0 {
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return nil
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}
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if _, err := ctx.bc.Write(ctx.dataBuf); err != nil {
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return fmt.Errorf("cannot write data with size %d: %s", len(ctx.dataBuf), err)
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}
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return nil
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}
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func (ctx *vmselectRequestCtx) writeString(s string) error {
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ctx.dataBuf = append(ctx.dataBuf[:0], s...)
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return ctx.writeDataBufBytes()
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}
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func (ctx *vmselectRequestCtx) writeUint64(n uint64) error {
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ctx.sizeBuf = encoding.MarshalUint64(ctx.sizeBuf[:0], n)
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if _, err := ctx.bc.Write(ctx.sizeBuf); err != nil {
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return fmt.Errorf("cannot write uint64 %d: %s", n, err)
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}
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return nil
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}
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const maxRPCNameSize = 128
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var zeroTime time.Time
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func (s *Server) processVMSelectRequest(ctx *vmselectRequestCtx) error {
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// Read rpcName
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// Do not set deadline on reading rpcName, since it may take a
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// lot of time for idle connection.
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if err := ctx.readDataBufBytes(maxRPCNameSize); err != nil {
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if err == io.EOF {
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// Remote client gracefully closed the connection.
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return err
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}
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return fmt.Errorf("cannot read rpcName: %s", err)
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}
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// Limit the time required for reading request args.
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if err := ctx.bc.SetReadDeadline(time.Now().Add(5 * time.Second)); err != nil {
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return fmt.Errorf("cannot set read deadline for reading request args: %s", err)
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}
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defer func() {
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_ = ctx.bc.SetReadDeadline(zeroTime)
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}()
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switch string(ctx.dataBuf) {
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case "search_v3":
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return s.processVMSelectSearchQuery(ctx)
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case "labelValues":
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return s.processVMSelectLabelValues(ctx)
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case "labelEntries":
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return s.processVMSelectLabelEntries(ctx)
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case "labels":
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return s.processVMSelectLabels(ctx)
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case "seriesCount":
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return s.processVMSelectSeriesCount(ctx)
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case "deleteMetrics_v2":
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return s.processVMSelectDeleteMetrics(ctx)
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default:
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return fmt.Errorf("unsupported rpcName: %q", ctx.dataBuf)
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}
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}
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const maxTagFiltersSize = 64 * 1024
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func (s *Server) processVMSelectDeleteMetrics(ctx *vmselectRequestCtx) error {
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vmselectDeleteMetricsRequests.Inc()
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// Read request
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if err := ctx.readDataBufBytes(maxTagFiltersSize); err != nil {
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return fmt.Errorf("cannot read labelName: %s", err)
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}
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tail, err := ctx.sq.Unmarshal(ctx.dataBuf)
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if err != nil {
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return fmt.Errorf("cannot unmarshal SearchQuery: %s", err)
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}
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if len(tail) > 0 {
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return fmt.Errorf("unexpected non-zero tail left after unmarshaling SearchQuery: (len=%d) %q", len(tail), tail)
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}
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// Setup ctx.tfss
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if err := ctx.setupTfss(); err != nil {
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// Send the error message to vmselect.
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errMsg := err.Error()
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if err := ctx.writeString(errMsg); err != nil {
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return fmt.Errorf("cannot send error message: %s", err)
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}
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return nil
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}
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// Delete the given metrics.
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deletedCount, err := s.storage.DeleteMetrics(ctx.tfss)
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if err != nil {
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if err := ctx.writeString(err.Error()); err != nil {
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return fmt.Errorf("cannot send error message: %s", err)
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}
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return nil
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}
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// Send an empty error message to vmselect.
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if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send empty error message: %s", err)
|
|
}
|
|
// Send deletedCount to vmselect.
|
|
if err := ctx.writeUint64(uint64(deletedCount)); err != nil {
|
|
return fmt.Errorf("cannot send deletedCount=%d: %s", deletedCount, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *Server) processVMSelectLabels(ctx *vmselectRequestCtx) error {
|
|
vmselectLabelsRequests.Inc()
|
|
|
|
// Read request
|
|
accountID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read accountID: %s", err)
|
|
}
|
|
projectID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read projectID: %s", err)
|
|
}
|
|
|
|
// Search for tag keys
|
|
labels, err := s.storage.SearchTagKeys(accountID, projectID, *maxTagKeysPerSearch)
|
|
if err != nil {
|
|
// Send the error message to vmselect.
|
|
errMsg := fmt.Sprintf("error during labels search: %s", err)
|
|
if err := ctx.writeString(errMsg); err != nil {
|
|
return fmt.Errorf("cannot send error message: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Send an empty error message to vmselect.
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send empty error message: %s", err)
|
|
}
|
|
|
|
// Send labels to vmselect
|
|
for _, label := range labels {
|
|
if len(label) == 0 {
|
|
// Do this substitution in order to prevent clashing with 'end of response' marker.
|
|
label = "__name__"
|
|
}
|
|
if err := ctx.writeString(label); err != nil {
|
|
return fmt.Errorf("cannot write label %q: %s", label, err)
|
|
}
|
|
}
|
|
|
|
// Send 'end of response' marker
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send 'end of response' marker")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
const maxLabelValueSize = 16 * 1024
|
|
|
|
func (s *Server) processVMSelectLabelValues(ctx *vmselectRequestCtx) error {
|
|
vmselectLabelValuesRequests.Inc()
|
|
|
|
// Read request
|
|
accountID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read accountID: %s", err)
|
|
}
|
|
projectID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read projectID: %s", err)
|
|
}
|
|
if err := ctx.readDataBufBytes(maxLabelValueSize); err != nil {
|
|
return fmt.Errorf("cannot read labelName: %s", err)
|
|
}
|
|
labelName := ctx.dataBuf
|
|
|
|
// Search for tag values
|
|
labelValues, err := s.storage.SearchTagValues(accountID, projectID, labelName, *maxTagValuesPerSearch)
|
|
if err != nil {
|
|
// Send the error message to vmselect.
|
|
errMsg := fmt.Sprintf("error during label values search for labelName=%q: %s", labelName, err)
|
|
if err := ctx.writeString(errMsg); err != nil {
|
|
return fmt.Errorf("cannot send error message: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Send an empty error message to vmselect.
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send empty error message: %s", err)
|
|
}
|
|
|
|
return writeLabelValues(ctx, labelValues)
|
|
}
|
|
|
|
func writeLabelValues(ctx *vmselectRequestCtx, labelValues []string) error {
|
|
for _, labelValue := range labelValues {
|
|
if len(labelValue) == 0 {
|
|
// Skip empty label values, since they have no sense for prometheus.
|
|
continue
|
|
}
|
|
if err := ctx.writeString(labelValue); err != nil {
|
|
return fmt.Errorf("cannot write labelValue %q: %s", labelValue, err)
|
|
}
|
|
}
|
|
// Send 'end of label values' marker
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send 'end of response' marker")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *Server) processVMSelectLabelEntries(ctx *vmselectRequestCtx) error {
|
|
vmselectLabelEntriesRequests.Inc()
|
|
|
|
// Read request
|
|
accountID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read accountID: %s", err)
|
|
}
|
|
projectID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read projectID: %s", err)
|
|
}
|
|
|
|
// Perform the request
|
|
labelEntries, err := s.storage.SearchTagEntries(accountID, projectID, *maxTagKeysPerSearch, *maxTagValuesPerSearch)
|
|
if err != nil {
|
|
// Send the error message to vmselect.
|
|
errMsg := fmt.Sprintf("error during label entries search: %s", err)
|
|
if err := ctx.writeString(errMsg); err != nil {
|
|
return fmt.Errorf("cannot send error message: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Send an empty error message to vmselect.
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send empty error message: %s", err)
|
|
}
|
|
|
|
// Send labelEntries to vmselect
|
|
for i := range labelEntries {
|
|
e := &labelEntries[i]
|
|
label := e.Key
|
|
if label == "" {
|
|
// Do this substitution in order to prevent clashing with 'end of response' marker.
|
|
label = "__name__"
|
|
}
|
|
if err := ctx.writeString(label); err != nil {
|
|
return fmt.Errorf("cannot write label %q: %s", label, err)
|
|
}
|
|
if err := writeLabelValues(ctx, e.Values); err != nil {
|
|
return fmt.Errorf("cannot write label values for %q: %s", label, err)
|
|
}
|
|
}
|
|
|
|
// Send 'end of response' marker
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send 'end of response' marker")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *Server) processVMSelectSeriesCount(ctx *vmselectRequestCtx) error {
|
|
vmselectSeriesCountRequests.Inc()
|
|
|
|
// Read request
|
|
accountID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read accountID: %s", err)
|
|
}
|
|
projectID, err := ctx.readUint32()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read projectID: %s", err)
|
|
}
|
|
|
|
// Execute the request
|
|
n, err := s.storage.GetSeriesCount(accountID, projectID)
|
|
if err != nil {
|
|
// Send the error message to vmselect.
|
|
errMsg := fmt.Sprintf("error during obtaining series count: %s", err)
|
|
if err := ctx.writeString(errMsg); err != nil {
|
|
return fmt.Errorf("cannot send error message: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Send an empty error message to vmselect.
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send empty error message: %s", err)
|
|
}
|
|
|
|
// Send series count to vmselect.
|
|
if err := ctx.writeUint64(n); err != nil {
|
|
return fmt.Errorf("cannot write series count to vmselect: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// maxSearchQuerySize is the maximum size of SearchQuery packet in bytes.
|
|
const maxSearchQuerySize = 1024 * 1024
|
|
|
|
func (s *Server) processVMSelectSearchQuery(ctx *vmselectRequestCtx) error {
|
|
vmselectSearchQueryRequests.Inc()
|
|
|
|
// Read search query.
|
|
if err := ctx.readDataBufBytes(maxSearchQuerySize); err != nil {
|
|
return fmt.Errorf("cannot read searchQuery: %s", err)
|
|
}
|
|
tail, err := ctx.sq.Unmarshal(ctx.dataBuf)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot unmarshal SearchQuery: %s", err)
|
|
}
|
|
if len(tail) > 0 {
|
|
return fmt.Errorf("unexpected non-zero tail left after unmarshaling SearchQuery: (len=%d) %q", len(tail), tail)
|
|
}
|
|
fetchData, err := ctx.readBool()
|
|
if err != nil {
|
|
return fmt.Errorf("cannot read `fetchData` bool: %s", err)
|
|
}
|
|
|
|
// Setup search.
|
|
if err := ctx.setupTfss(); err != nil {
|
|
// Send the error message to vmselect.
|
|
errMsg := err.Error()
|
|
if err := ctx.writeString(errMsg); err != nil {
|
|
return fmt.Errorf("cannot send error message: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
tr := storage.TimeRange{
|
|
MinTimestamp: ctx.sq.MinTimestamp,
|
|
MaxTimestamp: ctx.sq.MaxTimestamp,
|
|
}
|
|
ctx.sr.Init(s.storage, ctx.tfss, tr, fetchData, *maxMetricsPerSearch)
|
|
defer ctx.sr.MustClose()
|
|
if err := ctx.sr.Error(); err != nil {
|
|
// Send the error message to vmselect.
|
|
errMsg := fmt.Sprintf("search error: %s", err)
|
|
if err := ctx.writeString(errMsg); err != nil {
|
|
return fmt.Errorf("cannot send error message: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Send empty error message to vmselect.
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send empty error message: %s", err)
|
|
}
|
|
|
|
// Send found blocks to vmselect.
|
|
for ctx.sr.NextMetricBlock() {
|
|
mb := ctx.sr.MetricBlock
|
|
|
|
vmselectMetricBlocksRead.Inc()
|
|
vmselectMetricRowsRead.Add(mb.Block.RowsCount())
|
|
|
|
ctx.dataBuf = mb.Marshal(ctx.dataBuf[:0])
|
|
if err := ctx.writeDataBufBytes(); err != nil {
|
|
return fmt.Errorf("cannot send MetricBlock: %s", err)
|
|
}
|
|
}
|
|
if err := ctx.sr.Error(); err != nil {
|
|
return fmt.Errorf("search error: %s", err)
|
|
}
|
|
|
|
// Send 'end of response' marker
|
|
if err := ctx.writeString(""); err != nil {
|
|
return fmt.Errorf("cannot send 'end of response' marker")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var (
|
|
vmselectDeleteMetricsRequests = metrics.NewCounter("vm_vmselect_delete_metrics_requests_total")
|
|
vmselectLabelsRequests = metrics.NewCounter("vm_vmselect_labels_requests_total")
|
|
vmselectLabelValuesRequests = metrics.NewCounter("vm_vmselect_label_values_requests_total")
|
|
vmselectLabelEntriesRequests = metrics.NewCounter("vm_vmselect_label_entries_requests_total")
|
|
vmselectSeriesCountRequests = metrics.NewCounter("vm_vmselect_series_count_requests_total")
|
|
vmselectSearchQueryRequests = metrics.NewCounter("vm_vmselect_search_query_requests_total")
|
|
vmselectMetricBlocksRead = metrics.NewCounter("vm_vmselect_metric_blocks_read_total")
|
|
vmselectMetricRowsRead = metrics.NewCounter("vm_vmselect_metric_rows_read_total")
|
|
)
|
|
|
|
func (ctx *vmselectRequestCtx) setupTfss() error {
|
|
tfss := ctx.tfss[:0]
|
|
for _, tagFilters := range ctx.sq.TagFilterss {
|
|
if len(tfss) < cap(tfss) {
|
|
tfss = tfss[:len(tfss)+1]
|
|
} else {
|
|
tfss = append(tfss, &storage.TagFilters{})
|
|
}
|
|
tfs := tfss[len(tfss)-1]
|
|
tfs.Reset(ctx.sq.AccountID, ctx.sq.ProjectID)
|
|
for i := range tagFilters {
|
|
tf := &tagFilters[i]
|
|
if err := tfs.Add(tf.Key, tf.Value, tf.IsNegative, tf.IsRegexp); err != nil {
|
|
return fmt.Errorf("cannot parse tag filter %s: %s", tf, err)
|
|
}
|
|
}
|
|
}
|
|
ctx.tfss = tfss
|
|
return nil
|
|
}
|