mirror of
https://github.com/MichaelCade/90DaysOfDevOps.git
synced 2025-07-07 00:44:56 +07:00
Add day 85 - Queues Workers and Tasks
Signed-off-by: Alistair Hey <alistair@heyal.co.uk>
This commit is contained in:
Alistair Hey
17
2023/day2-ops-code/async/generator/Dockerfile
Normal file
17
2023/day2-ops-code/async/generator/Dockerfile
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@ -0,0 +1,17 @@
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# Set the base image to use
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FROM golang:1.17-alpine
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# Set the working directory inside the container
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WORKDIR /app
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# Copy the source code into the container
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COPY . .
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# Build the Go application
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RUN go build -o main .
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# Expose the port that the application will run on
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EXPOSE 8080
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# Define the command that will run when the container starts
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CMD ["/app/main"]
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17
2023/day2-ops-code/async/generator/go.mod
Normal file
17
2023/day2-ops-code/async/generator/go.mod
Normal file
@ -0,0 +1,17 @@
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module main
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go 1.20
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require (
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github.com/go-sql-driver/mysql v1.7.0
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github.com/nats-io/nats.go v1.24.0
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)
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require (
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github.com/golang/protobuf v1.5.3 // indirect
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github.com/nats-io/nats-server/v2 v2.9.15 // indirect
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github.com/nats-io/nkeys v0.3.0 // indirect
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github.com/nats-io/nuid v1.0.1 // indirect
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golang.org/x/crypto v0.6.0 // indirect
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google.golang.org/protobuf v1.30.0 // indirect
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)
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32
2023/day2-ops-code/async/generator/go.sum
Normal file
32
2023/day2-ops-code/async/generator/go.sum
Normal file
@ -0,0 +1,32 @@
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github.com/go-sql-driver/mysql v1.7.0 h1:ueSltNNllEqE3qcWBTD0iQd3IpL/6U+mJxLkazJ7YPc=
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github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
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github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
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github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
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github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
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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/klauspost/compress v1.16.0 h1:iULayQNOReoYUe+1qtKOqw9CwJv3aNQu8ivo7lw1HU4=
|
||||
github.com/minio/highwayhash v1.0.2 h1:Aak5U0nElisjDCfPSG79Tgzkn2gl66NxOMspRrKnA/g=
|
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github.com/nats-io/jwt/v2 v2.3.0 h1:z2mA1a7tIf5ShggOFlR1oBPgd6hGqcDYsISxZByUzdI=
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github.com/nats-io/nats-server/v2 v2.9.15 h1:MuwEJheIwpvFgqvbs20W8Ish2azcygjf4Z0liVu2I4c=
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github.com/nats-io/nats-server/v2 v2.9.15/go.mod h1:QlCTy115fqpx4KSOPFIxSV7DdI6OxtZsGOL1JLdeRlE=
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github.com/nats-io/nats.go v1.24.0 h1:CRiD8L5GOQu/DcfkmgBcTTIQORMwizF+rPk6T0RaHVQ=
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github.com/nats-io/nats.go v1.24.0/go.mod h1:dVQF+BK3SzUZpwyzHedXsvH3EO38aVKuOPkkHlv5hXA=
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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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golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
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golang.org/x/crypto v0.6.0 h1:qfktjS5LUO+fFKeJXZ+ikTRijMmljikvG68fpMMruSc=
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golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
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golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
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golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
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golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
|
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
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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/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
|
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google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
|
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google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
|
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100
2023/day2-ops-code/async/generator/main.go
Normal file
100
2023/day2-ops-code/async/generator/main.go
Normal file
@ -0,0 +1,100 @@
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package main
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import (
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"database/sql"
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"fmt"
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_ "github.com/go-sql-driver/mysql"
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nats "github.com/nats-io/nats.go"
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"math/rand"
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"time"
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)
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func generateAndStoreString() (string, error) {
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// Connect to the database
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db, err := sql.Open("mysql", "root:password@tcp(mysql:3306)/mysql")
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if err != nil {
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return "", err
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}
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defer db.Close()
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// Generate a random string
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// Define a string of characters to use
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characters := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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// Generate a random string of length 10
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randomString := make([]byte, 64)
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for i := range randomString {
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randomString[i] = characters[rand.Intn(len(characters))]
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}
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// Insert the random number into the database
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_, err = db.Exec("INSERT INTO generator_async(random_string) VALUES(?)", string(randomString))
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if err != nil {
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return "", err
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}
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fmt.Printf("Random string %s has been inserted into the database\n", string(randomString))
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return string(randomString), nil
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}
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func main() {
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err := createGeneratordb()
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if err != nil {
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panic(err.Error())
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}
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nc, _ := nats.Connect("nats://my-nats:4222")
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defer nc.Close()
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nc.Subscribe("generator", func(msg *nats.Msg) {
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s, err := generateAndStoreString()
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if err != nil {
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print(err)
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}
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nc.Publish("generator_reply", []byte(s))
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nc.Publish("confirmation", []byte(s))
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})
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nc.Subscribe("confirmation_reply", func(msg *nats.Msg) {
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stringReceived(string(msg.Data))
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})
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// Subscribe to the queue
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// when a message comes in call generateAndStoreString() then put the string on the
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// reply queue. also add a message onto the confirmation queue
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// subscribe to the confirmation reply queue
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// when a message comes in call
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for {
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time.Sleep(1 * time.Second)
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}
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}
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func createGeneratordb() error {
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db, err := sql.Open("mysql", "root:password@tcp(mysql:3306)/mysql")
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if err != nil {
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return err
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}
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defer db.Close()
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// try to create a table for us
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_, err = db.Exec("CREATE TABLE IF NOT EXISTS generator_async(random_string VARCHAR(100), seen BOOLEAN, requested BOOLEAN)")
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return err
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}
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func stringReceived(input string) {
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|
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// Connect to the database
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db, err := sql.Open("mysql", "root:password@tcp(mysql:3306)/mysql")
|
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if err != nil {
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print(err)
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}
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defer db.Close()
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_, err = db.Exec("UPDATE generator_async SET requested = true WHERE random_string = ?", input)
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if err != nil {
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print(err)
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}
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}
|
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69
2023/day2-ops-code/async/k8s.yaml
Normal file
69
2023/day2-ops-code/async/k8s.yaml
Normal file
@ -0,0 +1,69 @@
|
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apiVersion: apps/v1
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kind: Deployment
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metadata:
|
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name: requestor
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spec:
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replicas: 1
|
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selector:
|
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matchLabels:
|
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app: requestor
|
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template:
|
||||
metadata:
|
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labels:
|
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app: requestor
|
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spec:
|
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containers:
|
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- name: requestor
|
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image: heyal/requestor:async
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imagePullPolicy: Always
|
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ports:
|
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- containerPort: 8080
|
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---
|
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apiVersion: v1
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kind: Service
|
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metadata:
|
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name: requestor-service
|
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spec:
|
||||
selector:
|
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app: requestor
|
||||
ports:
|
||||
- name: http
|
||||
protocol: TCP
|
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port: 8080
|
||||
targetPort: 8080
|
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type: ClusterIP
|
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---
|
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apiVersion: apps/v1
|
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kind: Deployment
|
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metadata:
|
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name: generator
|
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spec:
|
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replicas: 1
|
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selector:
|
||||
matchLabels:
|
||||
app: generator
|
||||
template:
|
||||
metadata:
|
||||
labels:
|
||||
app: generator
|
||||
spec:
|
||||
containers:
|
||||
- name: generator
|
||||
image: heyal/generator:async
|
||||
imagePullPolicy: Always
|
||||
ports:
|
||||
- containerPort: 8080
|
||||
---
|
||||
apiVersion: v1
|
||||
kind: Service
|
||||
metadata:
|
||||
name: generator-service
|
||||
spec:
|
||||
selector:
|
||||
app: generator
|
||||
ports:
|
||||
- name: http
|
||||
protocol: TCP
|
||||
port: 8080
|
||||
targetPort: 8080
|
||||
type: ClusterIP
|
||||
17
2023/day2-ops-code/async/requestor/Dockerfile
Normal file
17
2023/day2-ops-code/async/requestor/Dockerfile
Normal file
@ -0,0 +1,17 @@
|
||||
# Set the base image to use
|
||||
FROM golang:1.17-alpine
|
||||
|
||||
# Set the working directory inside the container
|
||||
WORKDIR /app
|
||||
|
||||
# Copy the source code into the container
|
||||
COPY . .
|
||||
|
||||
# Build the Go application
|
||||
RUN go build -o main .
|
||||
|
||||
# Expose the port that the application will run on
|
||||
EXPOSE 8080
|
||||
|
||||
# Define the command that will run when the container starts
|
||||
CMD ["/app/main"]
|
||||
17
2023/day2-ops-code/async/requestor/go.mod
Normal file
17
2023/day2-ops-code/async/requestor/go.mod
Normal file
@ -0,0 +1,17 @@
|
||||
module main
|
||||
|
||||
go 1.20
|
||||
|
||||
require (
|
||||
github.com/go-sql-driver/mysql v1.7.0
|
||||
github.com/nats-io/nats.go v1.24.0
|
||||
)
|
||||
|
||||
require (
|
||||
github.com/golang/protobuf v1.5.3 // indirect
|
||||
github.com/nats-io/nats-server/v2 v2.9.15 // indirect
|
||||
github.com/nats-io/nkeys v0.3.0 // indirect
|
||||
github.com/nats-io/nuid v1.0.1 // indirect
|
||||
golang.org/x/crypto v0.6.0 // indirect
|
||||
google.golang.org/protobuf v1.30.0 // indirect
|
||||
)
|
||||
32
2023/day2-ops-code/async/requestor/go.sum
Normal file
32
2023/day2-ops-code/async/requestor/go.sum
Normal file
@ -0,0 +1,32 @@
|
||||
github.com/go-sql-driver/mysql v1.7.0 h1:ueSltNNllEqE3qcWBTD0iQd3IpL/6U+mJxLkazJ7YPc=
|
||||
github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
|
||||
github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
|
||||
github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
|
||||
github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
|
||||
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
|
||||
github.com/klauspost/compress v1.16.0 h1:iULayQNOReoYUe+1qtKOqw9CwJv3aNQu8ivo7lw1HU4=
|
||||
github.com/minio/highwayhash v1.0.2 h1:Aak5U0nElisjDCfPSG79Tgzkn2gl66NxOMspRrKnA/g=
|
||||
github.com/nats-io/jwt/v2 v2.3.0 h1:z2mA1a7tIf5ShggOFlR1oBPgd6hGqcDYsISxZByUzdI=
|
||||
github.com/nats-io/nats-server/v2 v2.9.15 h1:MuwEJheIwpvFgqvbs20W8Ish2azcygjf4Z0liVu2I4c=
|
||||
github.com/nats-io/nats-server/v2 v2.9.15/go.mod h1:QlCTy115fqpx4KSOPFIxSV7DdI6OxtZsGOL1JLdeRlE=
|
||||
github.com/nats-io/nats.go v1.24.0 h1:CRiD8L5GOQu/DcfkmgBcTTIQORMwizF+rPk6T0RaHVQ=
|
||||
github.com/nats-io/nats.go v1.24.0/go.mod h1:dVQF+BK3SzUZpwyzHedXsvH3EO38aVKuOPkkHlv5hXA=
|
||||
github.com/nats-io/nkeys v0.3.0 h1:cgM5tL53EvYRU+2YLXIK0G2mJtK12Ft9oeooSZMA2G8=
|
||||
github.com/nats-io/nkeys v0.3.0/go.mod h1:gvUNGjVcM2IPr5rCsRsC6Wb3Hr2CQAm08dsxtV6A5y4=
|
||||
github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
|
||||
github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
|
||||
golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
|
||||
golang.org/x/crypto v0.6.0 h1:qfktjS5LUO+fFKeJXZ+ikTRijMmljikvG68fpMMruSc=
|
||||
golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
|
||||
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
|
||||
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
||||
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
|
||||
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
|
||||
google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
|
||||
google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
|
||||
108
2023/day2-ops-code/async/requestor/main.go
Normal file
108
2023/day2-ops-code/async/requestor/main.go
Normal file
@ -0,0 +1,108 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"errors"
|
||||
"fmt"
|
||||
_ "github.com/go-sql-driver/mysql"
|
||||
nats "github.com/nats-io/nats.go"
|
||||
"time"
|
||||
)
|
||||
|
||||
func storeString(input string) error {
|
||||
// Connect to the database
|
||||
db, err := sql.Open("mysql", "root:password@tcp(mysql:3306)/mysql")
|
||||
defer db.Close()
|
||||
// Insert the random number into the database
|
||||
_, err = db.Exec("INSERT INTO requestor_async(random_string) VALUES(?)", input)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
fmt.Printf("Random string %s has been inserted into the database\n", input)
|
||||
return nil
|
||||
}
|
||||
|
||||
func getStringFromDB(input string) error {
|
||||
// see if the string exists in the db, if so return nil
|
||||
// if not, return an error
|
||||
db, err := sql.Open("mysql", "root:password@tcp(mysql:3306)/mysql")
|
||||
defer db.Close()
|
||||
result, err := db.Query("SELECT * FROM requestor_async WHERE random_string = ?", input)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for result.Next() {
|
||||
var randomString string
|
||||
err = result.Scan(&randomString)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if randomString == input {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
return errors.New("string not found")
|
||||
}
|
||||
|
||||
func main() {
|
||||
|
||||
err := createRequestordb()
|
||||
if err != nil {
|
||||
panic(err.Error())
|
||||
}
|
||||
// setup a goroutine loop calling the generator every minute, saving the result in the DB
|
||||
|
||||
nc, _ := nats.Connect("nats://my-nats:4222")
|
||||
defer nc.Close()
|
||||
|
||||
ticker := time.NewTicker(60 * time.Second)
|
||||
quit := make(chan struct{})
|
||||
go func() {
|
||||
for {
|
||||
select {
|
||||
case <-ticker.C:
|
||||
nc.Publish("generator", []byte(""))
|
||||
case <-quit:
|
||||
ticker.Stop()
|
||||
return
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
nc.Subscribe("generator_reply", func(msg *nats.Msg) {
|
||||
err := storeString(string(msg.Data))
|
||||
if err != nil {
|
||||
print(err)
|
||||
}
|
||||
})
|
||||
|
||||
nc.Subscribe("confirmation", func(msg *nats.Msg) {
|
||||
err := getStringFromDB(string(msg.Data))
|
||||
if err != nil {
|
||||
print(err)
|
||||
}
|
||||
nc.Publish("confirmation_reply", []byte(string(msg.Data)))
|
||||
})
|
||||
// create a goroutine here to listen for messages on the queue to check, see if we have them
|
||||
|
||||
for {
|
||||
time.Sleep(10 * time.Second)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func createRequestordb() error {
|
||||
db, err := sql.Open("mysql", "root:password@tcp(mysql:3306)/mysql")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer db.Close()
|
||||
|
||||
// try to create a table for us
|
||||
_, err = db.Exec("CREATE TABLE IF NOT EXISTS requestor_async(random_string VARCHAR(100))")
|
||||
|
||||
return err
|
||||
}
|
||||
2
2023/day2-ops-code/buildpush.sh
Executable file
2
2023/day2-ops-code/buildpush.sh
Executable file
@ -0,0 +1,2 @@
|
||||
docker build ./async/requestor/ -f async/requestor/Dockerfile -t heyal/requestor:async && docker push heyal/requestor:async
|
||||
docker build ./async/generator/ -f async/generator/Dockerfile -t heyal/generator:async&& docker push heyal/generator:async
|
||||
Reference in New Issue
Block a user