commit c2659fb49c8bbb9bac8ce726b89693c1351fb1a9
Author: Egor Matveev <e.matveev@hh.ru>
Date:   Tue Dec 31 00:53:40 2024 +0300

    initial

diff --git a/.deploy/deploy-dev.yaml b/.deploy/deploy-dev.yaml
new file mode 100644
index 0000000..302ba1d
--- /dev/null
+++ b/.deploy/deploy-dev.yaml
@@ -0,0 +1,23 @@
+version: "3.4"
+
+
+services:
+  queues:
+    image: mathwave/sprint-repo:queues
+    networks:
+      - queues-development
+    environment:
+      MONGO_HOST: "mongo.develop.sprinthub.ru"
+      MONGO_PASSWORD: $MONGO_PASSWORD_DEV
+      STAGE: "development"
+    deploy:
+      mode: replicated
+      restart_policy:
+        condition: any
+      update_config:
+        parallelism: 1
+        order: start-first
+
+networks:
+  queues-development:
+    external: true
diff --git a/.deploy/deploy-prod.yaml b/.deploy/deploy-prod.yaml
new file mode 100644
index 0000000..187e3db
--- /dev/null
+++ b/.deploy/deploy-prod.yaml
@@ -0,0 +1,23 @@
+version: "3.4"
+
+
+services:
+  queues:
+    image: mathwave/sprint-repo:queues
+    networks:
+      - queues
+    environment:
+      MONGO_HOST: "mongo.sprinthub.ru"
+      MONGO_PASSWORD: $MONGO_PASSWORD_PROD
+      STAGE: "production"
+    deploy:
+      mode: replicated
+      restart_policy:
+        condition: any
+      update_config:
+        parallelism: 1
+        order: start-first
+
+networks:
+  queues:
+    external: true
diff --git a/.gitea/workflows/deploy-dev.yaml b/.gitea/workflows/deploy-dev.yaml
new file mode 100644
index 0000000..3efe3ac
--- /dev/null
+++ b/.gitea/workflows/deploy-dev.yaml
@@ -0,0 +1,43 @@
+name: Deploy Dev
+
+on:
+  pull_request:
+    branches:
+      - dev
+    types: [closed]
+
+jobs:
+  build:
+    name: Build
+    runs-on: [ dev ]
+    steps:
+      - name: login
+        run: docker login -u mathwave -p ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          ref: dev
+      - name: build
+        run: docker build -t mathwave/sprint-repo:queues .
+  push:
+    name: Push
+    runs-on: [ dev ]
+    needs: build
+    steps:
+      - name: push
+        run: docker push mathwave/sprint-repo:queues
+  deploy-dev:
+    name: Deploy dev
+    runs-on: [prod]
+    needs: push
+    steps:
+      - name: login
+        run: docker login -u mathwave -p ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          ref: dev
+      - name: deploy
+        env:
+          MONGO_PASSWORD_DEV: ${{ secrets.MONGO_PASSWORD_DEV }}
+        run: docker stack deploy --with-registry-auth -c ./.deploy/deploy-dev.yaml infra-development
diff --git a/.gitea/workflows/deploy-prod.yaml b/.gitea/workflows/deploy-prod.yaml
new file mode 100644
index 0000000..9a6c82f
--- /dev/null
+++ b/.gitea/workflows/deploy-prod.yaml
@@ -0,0 +1,43 @@
+name: Deploy Prod
+
+on:
+  pull_request:
+    branches:
+      - prod
+    types: [closed]
+
+jobs:
+  build:
+    name: Build
+    runs-on: [ dev ]
+    steps:
+      - name: login
+        run: docker login -u mathwave -p ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          ref: prod
+      - name: build
+        run: docker build -t mathwave/sprint-repo:queues .
+  push:
+    name: Push
+    runs-on: [ dev ]
+    needs: build
+    steps:
+      - name: push
+        run: docker push mathwave/sprint-repo:queues
+  deploy-prod:
+    name: Deploy prod
+    runs-on: [prod]
+    needs: push
+    steps:
+      - name: login
+        run: docker login -u mathwave -p ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+            ref: prod
+      - name: deploy
+        env:
+          MONGO_PASSWORD_PROD: ${{ secrets.MONGO_PASSWORD_PROD }}
+        run: docker stack deploy --with-registry-auth -c ./.deploy/deploy-prod.yaml infra
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..90334fd
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,6 @@
+FROM golang:alpine
+RUN mkdir /usr/src/app
+WORKDIR /usr/src/app
+COPY . .
+RUN go build
+ENTRYPOINT ["./queues-go"]
\ No newline at end of file
diff --git a/app/routers/finish.go b/app/routers/finish.go
new file mode 100644
index 0000000..b471b8b
--- /dev/null
+++ b/app/routers/finish.go
@@ -0,0 +1,29 @@
+package routers
+
+import (
+	"encoding/json"
+	"net/http"
+	tasks "queues-go/app/storage/mongo/collections"
+)
+
+type FinishRequestBody struct {
+	Id string `json:"id"`
+}
+
+func Finish(w http.ResponseWriter, r *http.Request) {
+	d := json.NewDecoder(r.Body)
+	body := FinishRequestBody{}
+	err := d.Decode(&body)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	err = tasks.Finish(body.Id)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusAccepted)
+}
diff --git a/app/routers/put.go b/app/routers/put.go
new file mode 100644
index 0000000..7a2759b
--- /dev/null
+++ b/app/routers/put.go
@@ -0,0 +1,46 @@
+package routers
+
+import (
+	"encoding/json"
+	"net/http"
+	tasks "queues-go/app/storage/mongo/collections"
+	"time"
+)
+
+type PutRequestBody struct {
+	Payload          json.RawMessage `json:"payload"`
+	SecondsToExecute int             `json:"seconds_to_execute"`
+	Delay            *int            `json:"delay"`
+}
+
+func Put(w http.ResponseWriter, r *http.Request) {
+	d := json.NewDecoder(r.Body)
+	body := PutRequestBody{}
+	err := d.Decode(&body)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	queue := r.Header.Get("queue")
+	var availableFrom time.Time
+	if body.Delay == nil {
+		availableFrom = time.Now()
+	} else {
+		availableFrom = time.Now().Add(time.Second + time.Duration(*body.Delay))
+	}
+	task := tasks.InsertedTask{
+		Queue:            queue,
+		Payload:          body.Payload,
+		PutAt:            time.Now(),
+		AvailableFrom:    availableFrom,
+		SecondsToExecute: body.SecondsToExecute,
+		TakenAt:          nil,
+		Attempts:         0,
+	}
+	err = tasks.Add(task)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+	w.WriteHeader(http.StatusAccepted)
+}
diff --git a/app/routers/take.go b/app/routers/take.go
new file mode 100644
index 0000000..8fa92ea
--- /dev/null
+++ b/app/routers/take.go
@@ -0,0 +1,42 @@
+package routers
+
+import (
+	"encoding/json"
+	"net/http"
+	tasks "queues-go/app/storage/mongo/collections"
+)
+
+type TaskResponse struct {
+	Id      string      `json:"id"`
+	Attempt int         `json:"attempt"`
+	Payload interface{} `json:"payload"`
+}
+
+type TakeResponse struct {
+	Task *TaskResponse `json:"task"`
+}
+
+func Take(w http.ResponseWriter, r *http.Request) {
+	queue := r.Header.Get("queue")
+	task, err := tasks.Take(queue)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+	var response TakeResponse
+	if task == nil {
+		response.Task = nil
+	} else {
+		response.Task = &TaskResponse{
+			Id:      task.Id.Hex(),
+			Attempt: task.Attempts,
+			Payload: task.Payload,
+		}
+	}
+	data, err := json.Marshal(response)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+	w.Write(data)
+}
diff --git a/app/storage/mongo/client.go b/app/storage/mongo/client.go
new file mode 100644
index 0000000..9c47fe6
--- /dev/null
+++ b/app/storage/mongo/client.go
@@ -0,0 +1,25 @@
+package client
+
+import (
+	"context"
+	"fmt"
+	"queues-go/app/utils"
+
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+var Database mongo.Database
+
+func Connect() {
+	connectionString := fmt.Sprintf("mongodb://mongo:%s@%s:27017/", utils.GetEnv("MONGO_PASSWORD", "password"), utils.GetEnv("MONGO_HOST", "localhost"))
+	client, err := mongo.Connect(context.TODO(), options.Client().ApplyURI(connectionString))
+	if err != nil {
+		panic(err)
+	}
+	db := client.Database("queues")
+	if db == nil {
+		panic(fmt.Errorf("DATABASE DOES NOT EXIST"))
+	}
+	Database = *db
+}
diff --git a/app/storage/mongo/collections/tasks.go b/app/storage/mongo/collections/tasks.go
new file mode 100644
index 0000000..a479d4c
--- /dev/null
+++ b/app/storage/mongo/collections/tasks.go
@@ -0,0 +1,105 @@
+package tasks
+
+import (
+	"context"
+	client "queues-go/app/storage/mongo"
+	errors "queues-go/app/utils"
+	"time"
+
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+type Task struct {
+	Queue            string             `bson:"queue"`
+	Payload          bson.M             `bson:"payload"`
+	PutAt            time.Time          `bson:"put_at"`
+	AvailableFrom    time.Time          `bson:"available_from"`
+	SecondsToExecute int                `bson:"seconds_to_execute"`
+	Id               primitive.ObjectID `bson:"_id"`
+	TakenAt          *time.Time         `bson:"taken_at"`
+	Attempts         int                `bson:"attempts"`
+}
+
+type InsertedTask struct {
+	Queue            string      `bson:"queue"`
+	Payload          interface{} `bson:"payload"`
+	PutAt            time.Time   `bson:"put_at"`
+	AvailableFrom    time.Time   `bson:"available_from"`
+	SecondsToExecute int         `bson:"seconds_to_execute"`
+	TakenAt          *time.Time  `bson:"taken_at"`
+	Attempts         int         `bson:"attempts"`
+}
+
+func Add(task InsertedTask) error {
+	_, err := collection().InsertOne(context.TODO(), task)
+	if err != nil {
+		return errors.ErrInternalError
+	}
+	return nil
+}
+
+func Finish(id string) error {
+	objectId, err := primitive.ObjectIDFromHex(id)
+	if err != nil {
+		return errors.ErrIncorrectFormat
+	}
+
+	_, err = collection().DeleteOne(context.TODO(), bson.M{"_id": objectId})
+	if err != nil {
+		return errors.ErrInternalError
+	}
+	return nil
+}
+
+func Take(queue string) (*Task, error) {
+	now := time.Now()
+	task, err := findTask(queue, now)
+	if err != nil {
+		return nil, errors.ErrInternalError
+	}
+	if task == nil {
+		return nil, nil
+	}
+	_, err = collection().UpdateByID(context.TODO(), task.Id, bson.M{"$set": bson.M{"taken_at": now, "attempts": task.Attempts + 1}})
+	if err != nil {
+		return nil, errors.ErrInternalError
+	}
+	return task, nil
+}
+
+func findTask(queue string, now time.Time) (*Task, error) {
+	cursor, err := collection().Find(
+		context.TODO(),
+		bson.M{
+			"queue":          queue,
+			"available_from": bson.M{"$lte": now},
+		},
+	)
+	if err != nil {
+		return nil, errors.ErrInternalError
+	}
+
+	var results []Task
+	err = cursor.All(context.TODO(), &results)
+	if err != nil {
+		return nil, errors.ErrInternalError
+	}
+
+	for _, task := range results {
+		if task.TakenAt == nil {
+			return &task, nil
+		}
+		takenAt := *task.TakenAt
+
+		if takenAt.Add(time.Second * time.Duration(task.SecondsToExecute)).Before(now) {
+			return &task, nil
+		}
+	}
+	return nil, nil
+}
+
+func collection() *mongo.Collection {
+	return client.Database.Collection("tasks")
+}
diff --git a/app/utils/env.go b/app/utils/env.go
new file mode 100644
index 0000000..828aa41
--- /dev/null
+++ b/app/utils/env.go
@@ -0,0 +1,11 @@
+package utils
+
+import "os"
+
+func GetEnv(env string, defaultValue string) string {
+	value := os.Getenv(env)
+	if len(value) == 0 {
+		return defaultValue
+	}
+	return value
+}
diff --git a/app/utils/errors.go b/app/utils/errors.go
new file mode 100644
index 0000000..3fb5fdf
--- /dev/null
+++ b/app/utils/errors.go
@@ -0,0 +1,6 @@
+package utils
+
+import "errors"
+
+var ErrIncorrectFormat = errors.New("incorrect_format")
+var ErrInternalError = errors.New("internal_error")
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..cdc9282
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,17 @@
+module queues-go
+
+go 1.23.4
+
+require (
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/montanaflynn/stats v0.7.1 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
+	go.mongodb.org/mongo-driver v1.17.1 // indirect
+	golang.org/x/crypto v0.26.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/text v0.17.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..9ea4ff2
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,46 @@
+github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
+github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
+github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
+github.com/montanaflynn/stats v0.7.1 h1:etflOAAHORrCC44V+aR6Ftzort912ZU+YLiSTuV8eaE=
+github.com/montanaflynn/stats v0.7.1/go.mod h1:etXPPgVO6n31NxCd9KQUMvCM+ve0ruNzt6R8Bnaayow=
+github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
+github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
+github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
+github.com/xdg-go/scram v1.1.2/go.mod h1:RT/sEzTbU5y00aCK8UOx6R7YryM0iF1N2MOmC3kKLN4=
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+github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 h1:ilQV1hzziu+LLM3zUTJ0trRztfwgjqKnBWNtSRkbmwM=
+github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78/go.mod h1:aL8wCCfTfSfmXjznFBSZNN13rSJjlIOI1fUNAtF7rmI=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+go.mongodb.org/mongo-driver v1.17.1 h1:Wic5cJIwJgSpBhe3lx3+/RybR5PiYRMpVFgO7cOHyIM=
+go.mongodb.org/mongo-driver v1.17.1/go.mod h1:wwWm/+BuOddhcq3n68LKRmgk2wXzmF6s0SFOa0GINL4=
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+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..8d7344a
--- /dev/null
+++ b/main.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	"net/http"
+	"queues-go/app/routers"
+	client "queues-go/app/storage/mongo"
+)
+
+func main() {
+	client.Connect()
+	http.HandleFunc("/api/v1/take", routers.Take)
+	http.HandleFunc("/api/v1/finish", routers.Finish)
+	http.HandleFunc("/api/v1/put", routers.Put)
+	http.ListenAndServe(":1239", nil)
+}
diff --git a/queues-go b/queues-go
new file mode 100755
index 0000000..4fd67a1
Binary files /dev/null and b/queues-go differ