set up project
This commit is contained in:
commit
eea30c7318
7 changed files with 193 additions and 0 deletions
9
.gitignore
vendored
Normal file
9
.gitignore
vendored
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
|
||||
# development environment
|
||||
.envrc
|
||||
.direnv
|
||||
|
||||
# postgres
|
||||
postgres.db
|
||||
postgres.log
|
||||
.s.PGSQL.5432*
|
||||
27
flake.lock
generated
Normal file
27
flake.lock
generated
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
{
|
||||
"nodes": {
|
||||
"nixpkgs": {
|
||||
"locked": {
|
||||
"lastModified": 1742272065,
|
||||
"narHash": "sha256-ud8vcSzJsZ/CK+r8/v0lyf4yUntVmDq6Z0A41ODfWbE=",
|
||||
"owner": "NixOS",
|
||||
"repo": "nixpkgs",
|
||||
"rev": "3549532663732bfd89993204d40543e9edaec4f2",
|
||||
"type": "github"
|
||||
},
|
||||
"original": {
|
||||
"owner": "NixOS",
|
||||
"ref": "nixpkgs-unstable",
|
||||
"repo": "nixpkgs",
|
||||
"type": "github"
|
||||
}
|
||||
},
|
||||
"root": {
|
||||
"inputs": {
|
||||
"nixpkgs": "nixpkgs"
|
||||
}
|
||||
}
|
||||
},
|
||||
"root": "root",
|
||||
"version": 7
|
||||
}
|
||||
76
flake.nix
Normal file
76
flake.nix
Normal file
|
|
@ -0,0 +1,76 @@
|
|||
{
|
||||
inputs = {
|
||||
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
|
||||
};
|
||||
|
||||
outputs = {
|
||||
self,
|
||||
nixpkgs,
|
||||
...
|
||||
}: let
|
||||
# System types to support.
|
||||
supportedSystems = ["x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"];
|
||||
|
||||
# Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
|
||||
forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
|
||||
|
||||
# Nixpkgs instantiated for supported system types.
|
||||
nixpkgsFor = forAllSystems (system: import nixpkgs {inherit system;});
|
||||
in {
|
||||
devShells = forAllSystems (system: let
|
||||
pkgs = nixpkgsFor.${system};
|
||||
startPostgres = pkgs.writeScriptBin "postgres_start" ''
|
||||
background() {
|
||||
exec 0>&-
|
||||
exec 1>&-
|
||||
exec 2>&-
|
||||
exec 3>&-
|
||||
"$@" &
|
||||
disown $!
|
||||
}
|
||||
|
||||
echo "Starting postgres server..."
|
||||
# start postgres server
|
||||
background ${pkgs.postgresql}/bin/pg_ctl -l $DB_LOG -o "--unix_socket_directories='$PWD'" start
|
||||
echo "Postgres server started."
|
||||
'';
|
||||
in {
|
||||
default = pkgs.mkShell {
|
||||
buildInputs = with pkgs; [go gopls gotools go-tools postgresql];
|
||||
|
||||
PGDATA = "postgres.db";
|
||||
DB_LOG = "postgres.log";
|
||||
DB_NAME = "vegan-barcode";
|
||||
shellHook = ''
|
||||
echo "Using ${pkgs.postgresql.name}."
|
||||
|
||||
create_db=0
|
||||
# initialize postgres if we have not done so already
|
||||
if [ ! -d $PGDATA ]; then
|
||||
echo "Postgres not found. Initializing postgres at $PGDATA"
|
||||
${pkgs.postgresql}/bin/initdb > /dev/null
|
||||
|
||||
echo "Setting postgres unix socket directories to $PWD/$SOCKET_DIRECTORIES..."
|
||||
echo "unix_socket_directories = '$PWD'" >> $PGDATA/postgresql.conf
|
||||
echo "unix socket directories set."
|
||||
|
||||
echo "Creating database $DB_NAME..."
|
||||
echo "CREATE DATABASE \"$DB_NAME\";" | postgres --single -E postgres
|
||||
echo "Database created."
|
||||
fi
|
||||
|
||||
export PGHOST="$PWD"
|
||||
|
||||
if [ ! -f "$PWD/.s.PGSQL.5432.lock" ]; then
|
||||
${startPostgres}/bin/postgres_start
|
||||
fi
|
||||
'';
|
||||
};
|
||||
});
|
||||
|
||||
# The default package for 'nix build'. This makes sense if the
|
||||
# flake provides only one package or there is a clear "main"
|
||||
# package.
|
||||
defaultPackage = forAllSystems (system: self.packages.${system}.go-hello);
|
||||
};
|
||||
}
|
||||
17
go.mod
Normal file
17
go.mod
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
module vegan-barcode/backend
|
||||
|
||||
go 1.24.1
|
||||
|
||||
require github.com/jackc/pgx v3.6.2+incompatible
|
||||
|
||||
require (
|
||||
github.com/jackc/pgpassfile v1.0.0 // indirect
|
||||
github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
|
||||
)
|
||||
|
||||
require (
|
||||
github.com/jackc/pgx/v5 v5.7.4
|
||||
github.com/pkg/errors v0.9.1 // indirect
|
||||
golang.org/x/crypto v0.36.0 // indirect
|
||||
golang.org/x/text v0.23.0 // indirect
|
||||
)
|
||||
21
go.sum
Normal file
21
go.sum
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
|
||||
github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
|
||||
github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
|
||||
github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
|
||||
github.com/jackc/pgx v3.6.2+incompatible h1:2zP5OD7kiyR3xzRYMhOcXVvkDZsImVXfj+yIyTQf3/o=
|
||||
github.com/jackc/pgx v3.6.2+incompatible/go.mod h1:0ZGrqGqkRlliWnWB4zKnWtjbSWbGkVEFm4TeybAXq+I=
|
||||
github.com/jackc/pgx/v5 v5.7.4 h1:9wKznZrhWa2QiHL+NjTSPP6yjl3451BX3imWDnokYlg=
|
||||
github.com/jackc/pgx/v5 v5.7.4/go.mod h1:ncY89UGWxg82EykZUwSpUKEfccBGGYq1xjrOpsbsfGQ=
|
||||
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
|
||||
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
|
||||
golang.org/x/crypto v0.36.0 h1:AnAEvhDddvBdpY+uR+MyHmuZzzNqXSe/GvuDeob5L34=
|
||||
golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
|
||||
golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY=
|
||||
golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
14
shell.nix
Normal file
14
shell.nix
Normal file
|
|
@ -0,0 +1,14 @@
|
|||
(
|
||||
import
|
||||
(
|
||||
let
|
||||
lock = builtins.fromJSON (builtins.readFile ./flake.lock);
|
||||
in
|
||||
fetchTarball {
|
||||
url = lock.nodes.flake-compat.locked.url or "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
|
||||
sha256 = lock.nodes.flake-compat.locked.narHash;
|
||||
}
|
||||
)
|
||||
{src = ./.;}
|
||||
)
|
||||
.shellNix
|
||||
29
src/database/database.go
Normal file
29
src/database/database.go
Normal file
|
|
@ -0,0 +1,29 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"os"
|
||||
|
||||
"github.com/jackc/pgx/v5"
|
||||
)
|
||||
|
||||
func main() {
|
||||
// urlExample := "postgres://username:password@localhost:5432/database_name"
|
||||
conn, err := pgx.Connect(context.Background(), os.Getenv("PGHOST"))
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
defer conn.Close(context.Background())
|
||||
|
||||
var name string
|
||||
var weight int64
|
||||
err = conn.QueryRow(context.Background(), "select name, weight from widgets where id=$1", 42).Scan(&name, &weight)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
fmt.Println(name, weight)
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue