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Verified Commit a45b68d9 authored by Andrej Ramašeuski's avatar Andrej Ramašeuski
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Externi counter

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Stage: build
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.gitlab-ci.yml
+ 10
− 2
View file @ a45b68d9
......@@ -9,12 +9,20 @@ services:
before_script:
- apk add --no-cache yq
- docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
- VERSION=`yq eval '.info.version' openapi.yaml`
build:
build_app:
stage: build
script:
- VERSION=`yq eval '.info.version' openapi.yaml`
- docker pull $CI_REGISTRY_IMAGE:latest || true
- docker build --cache-from $CI_REGISTRY_IMAGE:latest --tag $CI_REGISTRY_IMAGE:$VERSION --tag $CI_REGISTRY_IMAGE:latest .
- docker push $CI_REGISTRY_IMAGE:$VERSION
- docker push $CI_REGISTRY_IMAGE:latest
build_online_counter:
stage: build
script:
- docker pull $CI_REGISTRY_IMAGE:counter-latest || true
- docker build --cache-from $CI_REGISTRY_IMAGE:counter-latest --tag $CI_REGISTRY_IMAGE:counter-$VERSION --tag $CI_REGISTRY_IMAGE:counter-latest ./tools/online-counter
- docker push $CI_REGISTRY_IMAGE:online-$VERSION
- docker push $CI_REGISTRY_IMAGE:online-latest
openapi.yaml
+ 1
− 1
View file @ a45b68d9
openapi: 3.0.3
info:
version: "2.9.1"
version: "3.0.0"
title: CF Online
description: CF Online
license:
......
tools/online-counter/Dockerfile 0 → 100644
+ 24
− 0
View file @ a45b68d9
# syntax=docker/dockerfile:1
FROM golang:1.17-alpine AS build
WORKDIR /app
COPY go.mod ./
COPY go.sum ./
RUN go mod download
COPY *.go ./
RUN go build -o /counter
FROM alpine
WORKDIR /
COPY --from=build /counter /counter
USER nobody:nobody
ENTRYPOINT ["/counter"]
tools/online-counter/go.mod 0 → 100644
+ 5
− 0
View file @ a45b68d9
module online
go 1.13
require github.com/go-redis/redis/v8 v8.11.4 // indirect
tools/online-counter/go.sum 0 → 100644
+ 89
− 0
View file @ a45b68d9
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
tools/online-counter/online.go 0 → 100644
+ 120
− 0
View file @ a45b68d9
package main
import (
"fmt"
"github.com/go-redis/redis/v8"
"math"
"os"
"strings"
"time"
)
type eventCounts struct {
All int
Members int
GroupSizeFull int
GroupSizeHalf int
}
const tarpitFactor = 1000.0
func main() {
// konfigurace redis klienta
options, err := redis.ParseURL(os.Getenv("CFG_REDIS"))
if err != nil {
panic(err)
}
// redis klient a kontext
rdb := redis.NewClient(options)
ctx := rdb.Context()
// ukonceni prace redis klienta
defer func() {
err := rdb.Close()
if err != nil {
panic(err)
}
}()
lastPub := make(map[string]time.Time)
// main loop
ticker := time.Tick(time.Second * 1)
for now := range ticker {
online := make(map[string]eventCounts)
iter := rdb.Scan(ctx, 0, "live:*", 0).Iterator()
for iter.Next(ctx) {
key := strings.Split(iter.Val(), ":")
eventID := key[1]
isMember := key[2] == "1"
// pocitani
event := online[eventID]
event.All++
if isMember {
event.Members++
}
event.GroupSizeFull, event.GroupSizeHalf = member_group_size(event.All)
online[key[1]] = event
}
if err := iter.Err(); err != nil {
panic(err)
}
// publsh counts
for event, count := range online {
elapsed := now.Sub(lastPub[event]).Round(time.Second).Seconds()
if elapsed < float64(count.All)/tarpitFactor {
break
}
fmt.Println(elapsed)
// tady muze byt next
lastPub[event] = now
topic := fmt.Sprintf("online:%s", event)
message := fmt.Sprintf("%v", count)
if os.Getenv("DEBUG") != "" {
fmt.Println(topic, message)
}
err = rdb.Publish(ctx, topic, message).Err()
if err != nil {
panic(err)
}
}
}
}
func member_group_size(count int) (full int, half int) {
min := float64(count) / 100
max := float64(count) / 5
group := 2 * math.Sqrt(float64(count))
if group < min {
group = min
}
if group > max {
group = max
}
full = int(math.Ceil(group))
half = int(math.Ceil(group / 2))
return
}
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