mirror of
https://github.com/ClusterCockpit/cc-metric-store.git
synced 2024-11-10 05:07:25 +01:00
Switch to influxes line protocol parser
This commit is contained in:
Lou Knauer
parent
3b2ec98ba0
commit
85591e7a03
3
go.mod
3
go.mod
@ -3,9 +3,10 @@ module github.com/ClusterCockpit/cc-metric-store
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go 1.16
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require (
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github.com/golang-jwt/jwt/v4 v4.0.0 // indirect
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github.com/golang-jwt/jwt/v4 v4.0.0
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github.com/golang/protobuf v1.5.2 // indirect
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github.com/gorilla/mux v1.8.0
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github.com/influxdata/line-protocol/v2 v2.2.0
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github.com/nats-io/nats-server/v2 v2.2.6 // indirect
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github.com/nats-io/nats.go v1.11.0
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)
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19
go.sum
19
go.sum
@ -1,3 +1,7 @@
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github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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github.com/frankban/quicktest v1.11.0/go.mod h1:K+q6oSqb0W0Ininfk863uOk1lMy69l/P6txr3mVT54s=
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github.com/frankban/quicktest v1.11.2/go.mod h1:K+q6oSqb0W0Ininfk863uOk1lMy69l/P6txr3mVT54s=
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github.com/frankban/quicktest v1.13.0/go.mod h1:qLE0fzW0VuyUAJgPU19zByoIr0HtCHN/r/VLSOOIySU=
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github.com/golang-jwt/jwt v3.2.2+incompatible h1:IfV12K8xAKAnZqdXVzCZ+TOjboZ2keLg81eXfW3O+oY=
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github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
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github.com/golang-jwt/jwt/v4 v4.0.0 h1:RAqyYixv1p7uEnocuy8P1nru5wprCh/MH2BIlW5z5/o=
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@ -14,11 +18,22 @@ github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiu
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github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
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github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
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github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
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github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
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github.com/influxdata/line-protocol-corpus v0.0.0-20210519164801-ca6fa5da0184/go.mod h1:03nmhxzZ7Xk2pdG+lmMd7mHDfeVOYFyhOgwO61qWU98=
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github.com/influxdata/line-protocol-corpus v0.0.0-20210922080147-aa28ccfb8937/go.mod h1:BKR9c0uHSmRgM/se9JhFHtTT7JTO67X23MtKMHtZcpo=
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github.com/influxdata/line-protocol/v2 v2.0.0-20210312151457-c52fdecb625a/go.mod h1:6+9Xt5Sq1rWx+glMgxhcg2c0DUaehK+5TDcPZ76GypY=
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github.com/influxdata/line-protocol/v2 v2.1.0/go.mod h1:QKw43hdUBg3GTk2iC3iyCxksNj7PX9aUSeYOYE/ceHY=
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github.com/influxdata/line-protocol/v2 v2.2.0 h1:UPmAqE15Hw5zu9E10SYhoXVLWnEJkWnuCbaCiRsA3c0=
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github.com/influxdata/line-protocol/v2 v2.2.0/go.mod h1:DmB3Cnh+3oxmG6LOBIxce4oaL4CPj3OmMPgvauXh+tM=
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github.com/klauspost/compress v1.11.12 h1:famVnQVu7QwryBN4jNseQdUKES71ZAOnB6UQQJPZvqk=
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github.com/klauspost/compress v1.11.12/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
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github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
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github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
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github.com/minio/highwayhash v1.0.1 h1:dZ6IIu8Z14VlC0VpfKofAhCy74wu/Qb5gcn52yWoz/0=
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github.com/minio/highwayhash v1.0.1/go.mod h1:BQskDq+xkJ12lmlUUi7U0M5Swg3EWR+dLTk+kldvVxY=
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github.com/nats-io/jwt v1.2.2 h1:w3GMTO969dFg+UOKTmmyuu7IGdusK+7Ytlt//OYH/uU=
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@ -34,6 +49,7 @@ github.com/nats-io/nkeys v0.3.0 h1:cgM5tL53EvYRU+2YLXIK0G2mJtK12Ft9oeooSZMA2G8=
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github.com/nats-io/nkeys v0.3.0/go.mod h1:gvUNGjVcM2IPr5rCsRsC6Wb3Hr2CQAm08dsxtV6A5y4=
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github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
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github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
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github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b h1:wSOdpTq0/eI46Ez/LkDwIsAKA71YP2SRKBODiRWM0as=
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@ -61,3 +77,6 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
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google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
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google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
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google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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174
lineprotocol.go
174
lineprotocol.go
@ -3,16 +3,13 @@ package main
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import (
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"bufio"
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"context"
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"errors"
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"io"
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"log"
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"math"
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"net"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/influxdata/line-protocol/v2/lineprotocol"
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"github.com/nats-io/nats.go"
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)
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@ -56,116 +53,17 @@ type Metric struct {
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Value Float
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}
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// measurement: node or cpu
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// tags: host, cluster, cpu (cpu only if measurement is cpu)
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// fields: metrics...
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// t: timestamp (accuracy: seconds)
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type Line struct {
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Measurement string
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Tags map[string]string
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Fields []Metric
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Ts time.Time
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}
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// Parse a single line as string.
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//
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// There is performance to be gained by implementing a parser
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// that directly reads from a bufio.Scanner.
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func ParseLine(rawline string) (*Line, error) {
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line := &Line{}
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parts := strings.Fields(rawline)
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if len(parts) != 3 {
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return nil, errors.New("line format error")
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}
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tagsAndMeasurement := strings.Split(parts[0], ",")
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line.Measurement = tagsAndMeasurement[0]
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line.Tags = map[string]string{}
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for i := 1; i < len(tagsAndMeasurement); i++ {
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pair := strings.Split(tagsAndMeasurement[i], "=")
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if len(pair) != 2 {
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return nil, errors.New("line format error")
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}
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line.Tags[pair[0]] = pair[1]
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}
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rawfields := strings.Split(parts[1], ",")
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line.Fields = []Metric{}
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for i := 0; i < len(rawfields); i++ {
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pair := strings.Split(rawfields[i], "=")
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if len(pair) != 2 {
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return nil, errors.New("line format error")
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}
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field, err := strconv.ParseFloat(pair[1], 64)
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if err != nil {
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return nil, err
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}
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line.Fields = append(line.Fields, Metric{
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Name: pair[0],
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Value: Float(field),
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})
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}
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unixTimestamp, err := strconv.ParseInt(parts[2], 10, 64)
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if err != nil {
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return nil, err
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}
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line.Ts = time.Unix(unixTimestamp, 0)
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return line, nil
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}
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func ParseLines(raw string) ([]*Line, error) {
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lines := make([]*Line, 0, 1)
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for _, line := range strings.Split(raw, "\n") {
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if len(line) == 0 {
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continue
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}
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line, err := ParseLine(line)
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if err != nil {
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return nil, err
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}
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lines = append(lines, line)
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}
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return lines, nil
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}
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// Listen for connections sending metric data in the line protocol format.
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//
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// This is a blocking function, send `true` through the channel argument to shut down the server.
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// `handleLine` will be called from different go routines for different connections.
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//
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func ReceiveTCP(address string, handleLine func(line *Line), done chan bool) error {
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func ReceiveTCP(address string, handleLine func(dec *lineprotocol.Decoder), done chan bool) error {
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ln, err := net.Listen("tcp", address)
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if err != nil {
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return err
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}
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handleConnection := func(conn net.Conn, handleLine func(line *Line)) {
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reader := bufio.NewReader(conn)
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for {
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rawline, err := reader.ReadString('\n')
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if err == io.EOF {
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return
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}
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if err != nil {
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log.Printf("reading from connection failed: %s\n", err.Error())
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return
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}
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line, err := ParseLine(rawline)
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if err != nil {
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log.Printf("parsing line failed: %s\n", err.Error())
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return
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}
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handleLine(line)
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}
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}
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go func() {
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for {
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stop := <-done
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@ -185,57 +83,37 @@ func ReceiveTCP(address string, handleLine func(line *Line), done chan bool) err
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return err
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}
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go handleConnection(conn, handleLine)
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go func() {
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reader := bufio.NewReader(conn)
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dec := lineprotocol.NewDecoder(reader)
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handleLine(dec)
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}()
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}
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}
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// Connect to a nats server and subscribe to "updates". This is a blocking
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// function. handleLine will be called for each line recieved via nats.
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// Send `true` through the done channel for gracefull termination.
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func ReceiveNats(address string, handleLine func(line *Line), workers int, ctx context.Context) error {
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func ReceiveNats(address string, handleLine func(dec *lineprotocol.Decoder), workers int, ctx context.Context) error {
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nc, err := nats.Connect(nats.DefaultURL)
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if err != nil {
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return err
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}
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defer nc.Close()
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var wg sync.WaitGroup
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var sub *nats.Subscription
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if workers < 2 {
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sub, err = nc.Subscribe("updates", func(m *nats.Msg) {
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lines, err := ParseLines(string(m.Data))
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if err != nil {
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log.Println(err.Error())
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}
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msgs := make(chan *nats.Msg, workers*2)
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for _, line := range lines {
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handleLine(line)
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}
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})
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if err != nil {
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return err
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}
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log.Printf("NATS subscription to 'updates' on '%s' established\n", address)
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<-ctx.Done()
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err = sub.Unsubscribe()
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} else {
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msgs := make(chan *nats.Msg, 16)
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var wg sync.WaitGroup
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if workers > 1 {
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wg.Add(workers)
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for i := 0; i < workers; i++ {
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go func() {
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for m := range msgs {
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lines, err := ParseLines(string(m.Data))
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if err != nil {
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log.Println(err.Error())
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}
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for _, line := range lines {
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handleLine(line)
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}
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dec := lineprotocol.NewDecoderWithBytes(m.Data)
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handleLine(dec)
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}
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wg.Done()
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@ -245,22 +123,28 @@ func ReceiveNats(address string, handleLine func(line *Line), workers int, ctx c
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sub, err = nc.Subscribe("updates", func(m *nats.Msg) {
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msgs <- m
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})
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if err != nil {
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return err
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}
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log.Printf("NATS subscription to 'updates' on '%s' established\n", address)
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<-ctx.Done()
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err = sub.Unsubscribe()
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close(msgs)
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wg.Wait()
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} else {
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sub, err = nc.Subscribe("updates", func(m *nats.Msg) {
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dec := lineprotocol.NewDecoderWithBytes(m.Data)
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handleLine(dec)
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})
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}
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|
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if err != nil {
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return err
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}
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log.Printf("NATS subscription to 'updates' on '%s' established\n", address)
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|
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<-ctx.Done()
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err = sub.Unsubscribe()
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close(msgs)
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wg.Wait()
|
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|
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if err != nil {
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return err
|
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}
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|
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nc.Close()
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log.Println("NATS connection closed")
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return nil
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@ -1,89 +0,0 @@
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package main
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|
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import (
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"bufio"
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"reflect"
|
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"strings"
|
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"testing"
|
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)
|
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|
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var raw = "node,host=lousxps,cluster=test mem_used=4692.252,proc_total=1083,load_five=0.91,cpu_user=1.424336e+06,cpu_guest_nice=0,cpu_guest=0,mem_available=9829.848,mem_slab=514.796,mem_free=4537.956,proc_run=2,cpu_idle=2.1589764e+07,swap_total=0,mem_cached=6368.5,swap_free=0,load_fifteen=0.93,cpu_nice=196,cpu_softirq=41456,mem_buffers=489.992,mem_total=16088.7,load_one=0.84,cpu_system=517223,cpu_iowait=8994,cpu_steal=0,cpu_irq=113265,mem_sreclaimable=362.452 1629356936\n"
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var expectedMeasurement = `node`
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var expectedTags = map[string]string{
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"host": "lousxps",
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"cluster": "test",
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}
|
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var expectedFields = []Metric{
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{"mem_used", 4692.252},
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{"proc_total", 1083},
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{"load_five", 0.91},
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{"cpu_user", 1.424336e+06},
|
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{"cpu_guest_nice", 0},
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{"cpu_guest", 0},
|
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{"mem_available", 9829.848},
|
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{"mem_slab", 514.796},
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{"mem_free", 4537.956},
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{"proc_run", 2},
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{"cpu_idle", 2.1589764e+07},
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{"swap_total", 0},
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{"mem_cached", 6368.5},
|
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{"swap_free", 0},
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{"load_fifteen", 0.93},
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{"cpu_nice", 196},
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{"cpu_softirq", 41456},
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{"mem_buffers", 489.992},
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{"mem_total", 16088.7},
|
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{"load_one", 0.84},
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{"cpu_system", 517223},
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{"cpu_iowait", 8994},
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{"cpu_steal", 0},
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{"cpu_irq", 113265},
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{"mem_sreclaimable", 362.452},
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}
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var expectedTimestamp int64 = 1629356936
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|
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func TestParseLine(t *testing.T) {
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line, err := ParseLine(raw)
|
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if err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
|
||||
if line.Measurement != expectedMeasurement {
|
||||
t.Error("measurement not as expected")
|
||||
}
|
||||
|
||||
if line.Ts.Unix() != int64(expectedTimestamp) {
|
||||
t.Error("timestamp not as expected")
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(line.Tags, expectedTags) {
|
||||
t.Error("tags not as expected")
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(line.Fields, expectedFields) {
|
||||
t.Error("fields not as expected")
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkParseLine(b *testing.B) {
|
||||
b.StopTimer()
|
||||
lines := strings.Repeat(raw, b.N)
|
||||
scanner := bufio.NewScanner(strings.NewReader(lines))
|
||||
scanner.Split(bufio.ScanLines)
|
||||
|
||||
b.StartTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
ok := scanner.Scan()
|
||||
if !ok {
|
||||
b.Error("woops")
|
||||
return
|
||||
}
|
||||
|
||||
line := scanner.Text()
|
||||
_, err := ParseLine(line)
|
||||
if err != nil {
|
||||
b.Error(err)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user