feat: working docker image and compose file

backend/.gitignore

@@ -1,2 +1,3 @@
 screenmark
+.env.docker
 .env

backend/Dockerfile

@@ -0,0 +1,15 @@
+FROM golang
+
+WORKDIR /app
+
+# Dependency management
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+
+RUN go build -o /app/haystack
+
+EXPOSE 3040
+
+CMD ["/app/haystack"]

backend/docker-compose.yml

@@ -0,0 +1,27 @@
+services:
+  database:
+    image: postgres
+    restart: always
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: password
+    volumes:
+      - ./schema.sql:/docker-entrypoint-initdb.d/schema.sql
+    ports:
+      - 4321:5432
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres -d haystack_db"]
+      interval: 10s
+      retries: 5
+      start_period: 5s
+      timeout: 5s
+  backend:
+    build: .
+    restart: always
+    env_file: .env.docker
+    ports:
+      - 3040:3040
+    depends_on:
+      database:
+        condition: service_healthy
+        restart: true

backend/main.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"log"
 	"net/http"
+	"os"
 	"screenmark/screenmark/models"
 	"time"
 
@@ -23,7 +24,7 @@ func main() {
 		panic(err)
 	}
 
-	listener := pq.NewListener(models.CONNECTION, time.Second, time.Second, func(event pq.ListenerEventType, err error) {
+	listener := pq.NewListener(os.Getenv("DB_CONNECTION"), time.Second, time.Second, func(event pq.ListenerEventType, err error) {
 		if err != nil {
 			panic(err)
 		}
@@ -103,7 +104,7 @@ func main() {
 		}
 	})
 
-	log.Println("Listening and serving.")
+	log.Println("Listening and serving on port 3040.")
 
 	http.ListenAndServe(":3040", mux)
 }

backend/models/database.go

@@ -2,16 +2,22 @@ package models
 
 import (
 	"database/sql"
+	"errors"
+	"os"
 
 	_ "github.com/lib/pq"
 )
 
-const CONNECTION = "postgresql://localhost:5432/haystack?sslmode=disable"
-
 var db *sql.DB
 
 func InitDatabase() error {
-	database, err := sql.Open("postgres", CONNECTION)
+	connection := os.Getenv("DB_CONNECTION")
+
+	if len(connection) == 0 {
+		return errors.New("DB_CONNECTION env was not found.")
+	}
+
+	database, err := sql.Open("postgres", connection)
 
 	db = database
 

backend/models/image.go

@@ -3,11 +3,13 @@ package models
 import (
 	"errors"
 	"fmt"
+	"log"
 
-	. "github.com/go-jet/jet/v2/postgres"
 	"screenmark/screenmark/.gen/haystack/haystack/model"
 	. "screenmark/screenmark/.gen/haystack/haystack/table"
 
+	. "github.com/go-jet/jet/v2/postgres"
+
 	"github.com/google/uuid"
 )
 
@@ -22,6 +24,8 @@ func GetImage(imageId string) (model.UserImages, error) {
 	id := uuid.MustParse(imageId)
 	stmt := UserImages.SELECT(UserImages.ImageName, UserImages.Image).WHERE(UserImages.ID.EQ(UUID(id)))
 
+	log.Println(stmt.DebugSql())
+
 	images := []model.UserImages{}
 	err := stmt.Query(db, &images)
 

backend/schema.sql

@@ -1,3 +1,6 @@
+DROP DATABASE IF EXISTS haystack_db;
+CREATE DATABASE haystack_db;
+
 DROP SCHEMA IF EXISTS haystack CASCADE;
 
 CREATE SCHEMA haystack;
@@ -53,4 +56,8 @@ $$ LANGUAGE plpgsql;
 CREATE OR REPLACE TRIGGER on_new_image AFTER INSERT
 ON haystack.user_images
 FOR EACH ROW
-EXECUTE PROCEDURE notify_new_image()
+EXECUTE PROCEDURE notify_new_image();
+
+/* -----| Test Data |----- */
+
+INSERT INTO haystack.users VALUES ('fcc22dbb-7792-4595-be8e-d0439e13990a');