dokcer file, docker compose, psql, api, json
This commit is contained in:
Shaz hemani
parent
2b5135af8a
commit
a3536ef159
8
Dockerfile
Normal file
8
Dockerfile
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@ -0,0 +1,8 @@
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FROM golang:alpine as builder
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RUN mkdir -p /go/src/app
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WORKDIR /go/src/app
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ADD . /go/src/app
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RUN go get -d -v
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14
README.md
14
README.md
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@ -1,3 +1,15 @@
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# golang-postgres-docker
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Just basic golang and postgres docker poc.
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To build docker compose
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`docker-compose up --build`
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To run docker compose
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`docker-compose up -d`
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To connect with psql using following command
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`docker exec -it genity-code-review_db_1 psql -U root_user -W db_genity`
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70
api.go
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70
api.go
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@ -0,0 +1,70 @@
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package main
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"time"
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)
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type User struct {
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UserID int
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Title string
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CreatedOn time.Time
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}
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type Users struct {
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users []User
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}
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func UserHandler(w http.ResponseWriter, req *http.Request) {
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users := Users{}
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err := queryRepos(&users)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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out, err := json.Marshal(users.users)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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fmt.Fprintf(w, string(out))
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}
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func queryRepos(users *Users) error {
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rows, err := db.Query(`
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SELECT
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user_id,
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title,
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created_on
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FROM users;
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`)
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if err != nil {
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return err
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}
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defer rows.Close()
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for rows.Next() {
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user := User{}
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err = rows.Scan(
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&user.UserID,
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&user.Title,
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&user.CreatedOn,
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)
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if err != nil {
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return err
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}
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users.users = append(users.users, user)
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}
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err = rows.Err()
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if err != nil {
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return err
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}
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return nil
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}
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4
db_dump
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4
db_dump
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@ -0,0 +1,4 @@
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CREATE TABLE users ( user_id serial PRIMARY KEY, title VARCHAR ( 50 ) UNIQUE NOT NULL, created_on TIMESTAMP NOT NULL);
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INSERT INTO users (title,created_on) VALUES('hemani','2013-06-01');
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30
docker-compose.yml
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30
docker-compose.yml
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@ -0,0 +1,30 @@
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version: '3'
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services:
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db:
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image: postgres
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environment:
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POSTGRES_DB: db_genity
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POSTGRES_USER: root_user
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POSTGRES_PASSWORD: shahzad12
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volumes:
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- db_postgres:/var/lib/postgresql/data
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ports:
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- "5436:5432"
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networks:
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- genity_network
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app:
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build: ""
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command: [ "go", "run", "main.go","api.go"]
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ports:
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- "8080:8080"
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depends_on:
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- db
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links:
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- db
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networks:
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- genity_network
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volumes:
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db_postgres:
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networks:
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genity_network:
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driver: bridge
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7
go.mod
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7
go.mod
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@ -0,0 +1,7 @@
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module genity-code-review
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go 1.14
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require (
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github.com/lib/pq v1.8.0
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)
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28
go.sum
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28
go.sum
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github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
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github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
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github.com/denisenkom/go-mssqldb v0.0.0-20191124224453-732737034ffd/go.mod h1:xbL0rPBG9cCiLr28tMa8zpbdarY27NDyej4t/EjAShU=
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github.com/erikstmartin/go-testdb v0.0.0-20160219214506-8d10e4a1bae5/go.mod h1:a2zkGnVExMxdzMo3M0Hi/3sEU+cWnZpSni0O6/Yb/P0=
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github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
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github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe/go.mod h1:8vg3r2VgvsThLBIFL93Qb5yWzgyZWhEmBwUJWevAkK0=
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github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
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github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
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github.com/jinzhu/gorm v1.9.16 h1:+IyIjPEABKRpsu/F8OvDPy9fyQlgsg2luMV2ZIH5i5o=
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github.com/jinzhu/gorm v1.9.16/go.mod h1:G3LB3wezTOWM2ITLzPxEXgSkOXAntiLHS7UdBefADcs=
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github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
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github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
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github.com/jinzhu/now v1.0.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
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github.com/lib/pq v1.1.1/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
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github.com/lib/pq v1.8.0 h1:9xohqzkUwzR4Ga4ivdTcawVS89YSDVxXMa3xJX3cGzg=
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github.com/lib/pq v1.8.0/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
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github.com/mattn/go-sqlite3 v1.14.0/go.mod h1:JIl7NbARA7phWnGvh0LKTyg7S9BA+6gx71ShQilpsus=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20191205180655-e7c4368fe9dd/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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65
main.go
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65
main.go
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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/lib/pq"
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"log"
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"net/http"
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)
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var db *sql.DB
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const (
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dbhost = "DBHOST"
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dbport = "DBPORT"
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dbuser = "DBUSER"
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dbpass = "DBPASS"
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dbname = "DBNAME"
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)
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func main() {
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initDb()
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defer db.Close()
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http.HandleFunc("/api/users", UserHandler)
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fmt.Println("Listening on :8080")
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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func initDb() {
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config := dbConfig()
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var err error
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psqlInfo := fmt.Sprintf("postgres://%v:%v@%v:%v/%v?sslmode=disable",
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config[dbuser], config[dbpass],
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config[dbhost], config[dbport], config[dbname])
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fmt.Println(psqlInfo)
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db, err = sql.Open("postgres", psqlInfo)
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if err != nil {
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panic(err)
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}
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err = db.Ping()
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if err != nil {
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panic(err)
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}
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fmt.Println("Successfully connected!")
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}
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func dbConfig() map[string]string {
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conf := make(map[string]string)
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conf[dbhost] = "genity-code-review_db_1"
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conf[dbport] = "5432"
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conf[dbuser] = "root_user"
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conf[dbpass] = "shahzad12"
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conf[dbname] = "db_genity"
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return conf
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}
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