This commit is contained in:
marcel-dempers 2020-09-15 22:08:36 +10:00 committed by Marcel Dempers
parent d59a07521a
commit 7eb88e36b2
14 changed files with 1014 additions and 0 deletions

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package main
import (
"net/http"
"github.com/julienschmidt/httprouter"
log "github.com/sirupsen/logrus"
"encoding/json"
"fmt"
"os"
"bytes"
"io/ioutil"
"context"
"time"
"github.com/go-redis/redis/v8"
)
var environment = os.Getenv("ENVIRONMENT")
var redis_host = os.Getenv("REDIS_HOST")
var redis_port = os.Getenv("REDIS_PORT")
var ctx = context.Background()
var rdb *redis.Client
func main() {
router := httprouter.New()
router.GET("/", func(w http.ResponseWriter, r *http.Request, p httprouter.Params){
cors(w)
playlistsJson := getPlaylists()
playlists := []playlist{}
err := json.Unmarshal([]byte(playlistsJson), &playlists)
if err != nil {
panic(err)
}
//get videos for each playlist from videos api
for pi := range playlists {
vs := []videos{}
for vi := range playlists[pi].Videos {
videoResp, err := http.Get("http://videos-api:10010/" + playlists[pi].Videos[vi].Id)
if err != nil {
fmt.Println(err)
break
}
defer videoResp.Body.Close()
video, err := ioutil.ReadAll(videoResp.Body)
if err != nil {
panic(err)
}
v := videos{}
err = json.Unmarshal(video, &v)
if err != nil {
panic(err)
}
vs = append(vs, v)
}
playlists[pi].Videos = vs
}
playlistsBytes, err := json.Marshal(playlists)
if err != nil {
panic(err)
}
reader := bytes.NewReader(playlistsBytes)
if b, err := ioutil.ReadAll(reader); err == nil {
fmt.Fprintf(w, "%s", string(b))
}
})
r := redis.NewClient(&redis.Options{
Addr: redis_host + ":" + redis_port,
DB: 0,
})
rdb = r
//init dummy data into redis
duration, _ := time.ParseDuration("4s")
dummyData := `
[
{
"id" : "1",
"name" : "CI/CD",
"videos": [ { "id" : "OFgziggbCOg"}, { "id" : "myCcJJ_Fk10"}, { "id" : "2WSJF7d8dUg"}]
},
{
"id" : "2",
"name" : "K8s in the Cloud",
"videos": [ { "id" : "QThadS3Soig"}, { "id" : "eyvLwK5C2dw"}]
},
{
"id" : "3",
"name" : "Storage and MessageBrokers",
"videos": [ { "id" : "JmCn7k0PlV4"}, { "id" : "_lpDfMkxccc"}]
},
{
"id" : "4",
"name" : "K8s Autoscaling",
"videos": [ { "id" : "jM36M39MA3I"}, { "id" : "FfDI08sgrYY"}]
}
]
`
retry(10, duration, func() (err error){
err = rdb.Set(ctx, "playlists",dummyData , 0).Err()
if err != nil {
fmt.Println("error occured connecting to Redis, retrying...")
return err
}
fmt.Println("Redis dummy data initialised")
return nil
})
fmt.Println("Running...")
log.Fatal(http.ListenAndServe(":10010", router))
}
func getPlaylists()(response string){
playlistData, err := rdb.Get(ctx, "playlists").Result()
if err != nil {
panic(err)
}
return playlistData
}
type playlist struct {
Id string `json:"id"`
Name string `json:"name"`
Videos []videos `json:"videos"`
}
type videos struct {
Id string `json:"id"`
Title string `json:"title"`
Description string `json:"description"`
Imageurl string `json:"imageurl"`
Url string `json:"url"`
}
type stop struct {
error
}
func retry(attempts int, sleep time.Duration, fn func() error) error {
if err := fn(); err != nil {
if s, ok := err.(stop); ok {
// Return the original error for later checking
return s.error
}
if attempts--; attempts > 0 {
time.Sleep(sleep)
return retry(attempts, 2*sleep, fn)
}
return err
}
return nil
}
func cors(writer http.ResponseWriter) () {
if(environment == "DEBUG"){
writer.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With, X-MY-API-Version")
writer.Header().Set("Access-Control-Allow-Credentials", "true")
writer.Header().Set("Access-Control-Allow-Origin", "*")
}
}

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FROM golang:1.15-alpine as build
RUN apk add --no-cache git
WORKDIR /src
COPY go.sum /src/
COPY go.mod /src/
COPY app.go /src
RUN go get
RUN go build -o app
FROM alpine:3.12
RUN mkdir -p /app
COPY --from=build /src/app /app/app
CMD ["./app/app"]

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module example.com/playlists-api
go 1.14
require (
github.com/go-redis/redis/v8 v8.0.0-beta.7 // indirect
github.com/julienschmidt/httprouter v1.3.0 // indirect
github.com/sirupsen/logrus v1.6.0 // indirect
)

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cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/DataDog/sketches-go v0.0.0-20190923095040-43f19ad77ff7/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgryski/go-rendezvous v0.0.0-20200624174652-8d2f3be8b2d9 h1:h2Ul3Ym2iVZWMQGYmulVUJ4LSkBm1erp9mUkPwtMoLg=
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github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
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github.com/go-redis/redis v6.15.8+incompatible h1:BKZuG6mCnRj5AOaWJXoCgf6rqTYnYJLe4en2hxT7r9o=
github.com/go-redis/redis/v8 v8.0.0-beta.7 h1:4HiY+qfsyz8OUr9zyAP2T1CJ0SFRY4mKFvm9TEznuv8=
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github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
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github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
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github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
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github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
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golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
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golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY=
golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20191009194640-548a555dbc03/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
google.golang.org/grpc v1.30.0 h1:M5a8xTlYTxwMn5ZFkwhRabsygDY5G8TYLyQDBxJNAxE=
google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/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 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

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@ -0,0 +1,208 @@
package main
import (
"net/http"
"github.com/julienschmidt/httprouter"
log "github.com/sirupsen/logrus"
"github.com/go-redis/redis/v8"
"fmt"
"time"
"context"
"encoding/json"
"os"
"strconv"
)
var environment = os.Getenv("ENVIRONMENT")
var redis_host = os.Getenv("REDIS_HOST")
var redis_port = os.Getenv("REDIS_PORT")
var ctx = context.Background()
var rdb *redis.Client
func main() {
router := httprouter.New()
router.GET("/:id", func(w http.ResponseWriter, r *http.Request, p httprouter.Params){
video := video(w,r,p)
cors(w)
fmt.Fprintf(w, "%s", video)
})
r := redis.NewClient(&redis.Options{
Addr: redis_host + ":" + redis_port,
DB: 0,
})
rdb = r
initDummyData()
fmt.Println("Running...")
log.Fatal(http.ListenAndServe(":10010", router))
}
func video(writer http.ResponseWriter, request *http.Request, p httprouter.Params)(response string){
id := p.ByName("id")
fmt.Print(id)
videoData, err := rdb.Get(ctx, id).Result()
if err == redis.Nil {
return "{}"
} else if err != nil {
panic(err)
} else {
return videoData
}
}
type stop struct {
error
}
func retry(attempts int, sleep time.Duration, fn func() error) error {
if err := fn(); err != nil {
if s, ok := err.(stop); ok {
// Return the original error for later checking
return s.error
}
if attempts--; attempts > 0 {
time.Sleep(sleep)
return retry(attempts, 2*sleep, fn)
}
return err
}
return nil
}
func cors(writer http.ResponseWriter) () {
if(environment == "DEBUG"){
writer.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With, X-MY-API-Version")
writer.Header().Set("Access-Control-Allow-Credentials", "true")
writer.Header().Set("Access-Control-Allow-Origin", "*")
}
}
func initDummyData(){
//init dummy data into redis
duration, _ := time.ParseDuration("4s")
v1 := `{
"id" : "jM36M39MA3I",
"title" : "Kubernetes cluster autoscaling",
"imageurl" : "https://i.ytimg.com/vi/jM36M39MA3I/sddefault.jpg",
"url" : "https://youtu.be/jM36M39MA3I",
"description" : ""
}
`
v2 := `{
"id" : "FfDI08sgrYY",
"title" : "Kubernetes pod autoscaling",
"imageurl" : "https://i.ytimg.com/vi/FfDI08sgrYY/sddefault.jpg",
"url" : "https://youtu.be/FfDI08sgrYY",
"description" : ""
}
`
v3 := `{
"id" : "JmCn7k0PlV4",
"title" : "Redis on Kubernetes",
"imageurl" : "https://i.ytimg.com/vi/JmCn7k0PlV4/sddefault.jpg",
"url" : "https://youtu.be/JmCn7k0PlV4",
"description" : ""
}
`
v4 := `{
"id" : "_lpDfMkxccc",
"title" : "RabbitMQ on Kubernetes",
"imageurl" : "https://i.ytimg.com/vi/_lpDfMkxccc/sddefault.jpg",
"url" : "https://youtu.be/_lpDfMkxccc",
"description" : ""
}
`
v5 := `{
"id" : "OFgziggbCOg",
"title" : "Flux CD",
"imageurl" : "https://i.ytimg.com/vi/OFgziggbCOg/sddefault.jpg",
"url" : "https://youtu.be/OFgziggbCOg",
"description" : ""
}
`
v6 := `{
"id" : "myCcJJ_Fk10",
"title" : "Drone CI",
"imageurl" : "https://i.ytimg.com/vi/myCcJJ_Fk10/sddefault.jpg",
"url" : "https://youtu.be/myCcJJ_Fk10",
"description" : ""
}
`
v7 := `{
"id" : "2WSJF7d8dUg",
"title" : "Argo CD",
"imageurl" : "https://i.ytimg.com/vi/2WSJF7d8dUg/sddefault.jpg",
"url" : "https://youtu.be/2WSJF7d8dUg",
"description" : ""
}
`
v8 := `{
"id" : "QThadS3Soig",
"title" : "Kubernetes on Amazon",
"imageurl" : "https://i.ytimg.com/vi/QThadS3Soig/sddefault.jpg",
"url" : "https://youtu.be/QThadS3Soig",
"description" : ""
}
`
v9 := `{
"id" : "eyvLwK5C2dw",
"title" : "Kubernetes on Azure",
"imageurl" : "https://i.ytimg.com/vi/eyvLwK5C2dw/mqdefault.jpg?sqp=CISC_PoF&rs=AOn4CLDo7kizrJozB0pxBhxL9JbyiW_EPw",
"url" : "https://youtu.be/eyvLwK5C2dw",
"description" : ""
}`
dummy := []string{ v1, v2, v3, v4,v5, v6, v7, v8,v9 }
retry(10, duration, func() (err error){
for i := range dummy {
dummyItem := dummy[i]
v := videos{}
iStr := strconv.Itoa(i)
fmt.Println("checking vid: " + iStr)
err := json.Unmarshal([]byte(dummyItem), &v)
if err != nil {
panic(err)
}
err = rdb.Set(ctx, v.Id,dummyItem , 0).Err()
}
if err != nil {
fmt.Println("error occured connecting to Redis, retrying...")
return err
}
fmt.Println("Redis dummy data initialised")
return nil
})
}
type videos struct {
Id string `json:"id"`
Title string `json:"title"`
Description string `json:"description"`
Imageurl string `json:"imageurl"`
Url string `json:"url"`
}

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@ -0,0 +1,18 @@
FROM golang:1.15-alpine as build
RUN apk add --no-cache git
WORKDIR /src
COPY go.sum /src/
COPY go.mod /src/
COPY app.go /src
RUN go get
RUN go build -o app
FROM alpine:3.12
RUN mkdir -p /app
COPY --from=build /src/app /app/app
CMD ["./app/app"]

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@ -0,0 +1,9 @@
module example.com/playlists-api
go 1.14
require (
github.com/go-redis/redis/v8 v8.0.0-beta.7 // indirect
github.com/julienschmidt/httprouter v1.3.0 // indirect
github.com/sirupsen/logrus v1.6.0 // indirect
)

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@ -0,0 +1,130 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/DataDog/sketches-go v0.0.0-20190923095040-43f19ad77ff7/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgryski/go-rendezvous v0.0.0-20200624174652-8d2f3be8b2d9 h1:h2Ul3Ym2iVZWMQGYmulVUJ4LSkBm1erp9mUkPwtMoLg=
github.com/dgryski/go-rendezvous v0.0.0-20200624174652-8d2f3be8b2d9/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
github.com/go-redis/redis v6.15.8+incompatible h1:BKZuG6mCnRj5AOaWJXoCgf6rqTYnYJLe4en2hxT7r9o=
github.com/go-redis/redis/v8 v8.0.0-beta.7 h1:4HiY+qfsyz8OUr9zyAP2T1CJ0SFRY4mKFvm9TEznuv8=
github.com/go-redis/redis/v8 v8.0.0-beta.7/go.mod h1:FGJAWDWFht1sQ4qxyJHZZbVyvnVcKQN0E3u5/5lRz+g=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U=
github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.10.1/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/opentracing/opentracing-go v1.1.1-0.20190913142402-a7454ce5950e/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I=
github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
go.opentelemetry.io/otel v0.7.0 h1:u43jukpwqR8EsyeJOMgrsUgZwVI1e1eVw7yuzRkD1l0=
go.opentelemetry.io/otel v0.7.0/go.mod h1:aZMyHG5TqDOXEgH2tyLiXSUKly1jT3yqE9PmrzIeCdo=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20200513190911-00229845015e h1:rMqLP+9XLy+LdbCXHjJHAmTfXCr93W7oruWA6Hq1Alc=
golang.org/x/exp v0.0.0-20200513190911-00229845015e/go.mod h1:4M0jN8W1tt0AVLNr8HDosyJCDCDuyL9N9+3m7wDWgKw=
golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
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google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
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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 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

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FROM nginx:1.19-alpine
#config
COPY ./nginx.conf /etc/nginx/nginx.conf
#content
COPY ./*.html /usr/share/nginx/html/
COPY ./*.css /usr/share/nginx/html/

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@ -0,0 +1,89 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="./bootstrap.min.css">
<title>Video Catalog</title>
</head>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<article>
<div ng-app="videos" ng-controller="videosController" class="container">
<div class="row">
<div id="accordion">
<div id="{{ l.id }}" ng-repeat="l in playlist" class="card">
<div class="card-header" id="heading{{ l.id }}">
<h5 class="mb-0" style="text-align: center;">
<button class="btn btn-link" data-toggle="collapse" data-target="#collapse{{ l.id }}" aria-expanded="true"
aria-controls="collapse{{ l.id }}">
{{ l.name }}
</button>
</h5>
</div>
<div id="collapse{{ l.id }}" class="collapse show" aria-labelledby="heading{{ l.id }}" data-parent="#accordion">
<div class="card-body">
<div class="row">
<div class="col card" ng-repeat="v in l.videos" style="width: 18rem;">
<img class="card-img-top" src="{{ v.imageurl }}" alt="Card image cap">
<div class="card-body">
<h5 class="card-title">{{ v.title }}</h5>
<p class="card-text">{{ v.description }}</p>
<a href="{{ v.url }}" class="btn btn-primary">Watch</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</article>
<hr />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"
integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm"
crossorigin="anonymous"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<script>
var model = {
playlist: [],
};
var app = angular.module('videos', []);
app.controller('videosController', function ($scope, $http) {
$http.get("http://localhost:81/")
.then(function (response) {
console.log(response);
//$scope.model = model;
for (i = 0; i < response.data.length; ++i) {
model.playlist.push(response.data[i]);
}
$scope.playlist = response.data;
});
});
</script>
</body>
</html>

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user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
server {
listen 80;
location / {
gzip off;
root /usr/share/nginx/html/;
index index.html;
}
location ~* \.(js|jpg|png|css)$ {
root /usr/share/nginx/html/;
}
}
sendfile on;
keepalive_timeout 65;
}

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version: "3.4"
services:
videos-web:
container_name: videos-web
image: aimvector/service-mesh:videos-web-1.0.0
build:
context: ./applications/videos-web
ports:
- 80:80
playlists-api:
container_name: playlists-api
image: aimvector/service-mesh:playlists-api-1.0.0
build:
context: ./applications/playlists-api
environment:
- "ENVIRONMENT=DEBUG"
- "REDIS_HOST=playlists-db"
- "REDIS_PORT=6379"
ports:
- 81:10010
videos-api:
container_name: videos-api
image: aimvector/service-mesh:videos-api-1.0.0
build:
context: ./applications/videos-api
environment:
- "ENVIRONMENT=DEBUG"
- "REDIS_HOST=videos-db"
- "REDIS_PORT=6379"
ports:
- 82:10010
videos-db:
container_name: videos-db
image: redis:6.0-alpine
playlists-db:
container_name: playlists-db
image: redis:6.0-alpine

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@ -0,0 +1,127 @@
# Introduction to Service Mesh
To understand service mesh, we need a good use case. <br/>
We need some service-to-service communication. <br/>
A basic microservice architecture will do. <br/>
## A simple Web UI: videos-web
<hr/>
<br/>
Consider `videos-web` <br/>
It's an HTML application that lists a bunch of playlists with videos in them.
```
+------------+
| videos-web |
| |
+------------+
```
<br/>
## A simple API: playlists-api
<hr/>
<br/>
For `videos-web` to get any content, it needs to make a call to `playlists-api`
```
+------------+ +---------------+
| videos-web +---->+ playlists-api |
| | | |
+------------+ +---------------+
```
Playlists consist of data like `title`, `description` etc, and a list of `videos`. <br/>
Playlists are stored in a database. <br/>
`playlists-api` stores its data in a database
```
+------------+ +---------------+ +--------------+
| videos-web +---->+ playlists-api +--->+ playlists-db |
| | | | | |
+------------+ +---------------+ +--------------+
```
<br/>
## A little complexity
<hr/>
<br/>
Each playlist item contains only a list of video id's. <br/>
A playlist does not have the full metadata of each video. <br/>
Example `playlist`:
```
{
"id" : "playlist-01",
"title": "Cool playlist",
"videos" : [ "video-1", "video-x" , "video-b"]
}
```
Take not above `videos: []` is a list of video id's <br/>
Videos have their own `title` and `description` and other metadata. <br/>
To get this data, we need a `videos-api` <br/>
This `videos-api` has its own database too <br/>
```
+------------+ +-----------+
| videos-api +------>+ videos-db |
| | | |
+------------+ +-----------+
```
For the `playlists-api` to load all the video data, it needs to call `videos-api` for each video ID it has.<br/>
<br/>
## Traffic flow
<hr/>
<br/>
A single `GET` request to the `playlists-api` will get all the playlists
from its database with a single DB call <br/>
For every playlist and every video in each list, a separate `GET` call will be made to the `videos-api` which will
retrieve the video metadata from its database. <br/>
This will result in many network fanouts between `playlists-api` and `videos-api` and many call to its database. <br/>
This is intentional to demonstrate a busy network.
<br/>
## Full architecture
<hr/>
<br/>
```
+------------+ +---------------+ +--------------+
| videos-web +---->+ playlists-api +--->+ playlists-db |
| | | | | |
+------------+ +-----+---------+ +--------------+
|
v
+-----+------+ +-----------+
| videos-api +------>+ videos-db |
| | | |
+------------+ +-----------+
```
## Run the apps
There is a `docker-compose.yaml` in this directory. <br/>
Change your terminal to this folder and run:
```
docker-compose build
docker-compose up
```
You can access the app on `http://localhost`